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522 documented notices, grouped by family.
A warning does not confirm a faulty part by itself. Internal checks are the responsibility of a professional.
Saunier Duval IsoFast H-Condens
MA36-CF/1 · N-INT
Documented entries for this family. The coverage does not extend to other models or editions.
71 visible alerts
Code / warningF.000
The temperature signal is missing in the heating supply.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.001
The return temperature signal is missing.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.002
The temperature signal is lost in the sanitary connection.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.003
The temperature reading of the accumulator is lost.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.010
Short circuit in the supply temperature measurement.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.011
Short circuit in the return temperature measurement.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.012
Short circuit in the domestic hot water sensor.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.013
Short circuit in the thermal sensor of the accumulator.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.020
The thermal safety device stops the gas flow when the permissible temperature is exceeded.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.022
Lack of water or insufficient water pressure.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.023
Excessive difference between the supply and return temperature.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.024
The water heats up faster than expected.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.025
Excessive temperature in the combustion gases.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.027
The control detects flame with the burner off.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.028
The ignition fails to confirm the presence of a flame.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.029
The flame goes out during operation and the ignition fails.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.032
The fan is spinning outside the allowed range.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.035
An obstruction in the air or flue gas path is detected.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.040
The regulation detects an insufficient excess air factor.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.042
The coding of the device or the gas group is not valid.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.044
Insufficient ionization signal and failure of its adaptation.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.047
Incoherent reading from the domestic hot water sensor at the outlet of the internal accumulator.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.049
Electrical problem in eBUS: short circuit or incompatible polarity between active sources.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.057
The combustion control is faulty, including its emergency mode.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.061
The electronic control does not respond within the expected times.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.062
The flame outage is detected too late.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.063
Fault when checking the reading and writing of the EEPROM memory.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.064
The electronics do not correctly convert the signal from a sensor.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.065
An electronic component exceeds its operating thermal margin.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.067
Faulty operation warning of the flame control.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.068
The flame reading is unstable.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.070
Missing, incorrect, or incompatible DSN identification with the coding.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.071
The supply temperature reading is not consistent.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.072
Invalid variation between the supply and return temperature readings.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.073
Short circuit in the water pressure sensor.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.074
Interruption of the signal that measures the water pressure.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.075
The pressure barely increases when starting the heating pump.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.076
The thermal protection of the main heat exchanger is activated.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.077
The condensate pump or the flue damper prevents the burner from operating.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.078
The device does not support the installed control module.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.080
Anomaly in the cold water sensor of the internal accumulator.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.081
Fault in the supercharging process described by the manufacturer.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.083
After starting the burner, the temperature does not rise or does so too slowly.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.084
The supply and return temperatures show an inconsistent difference.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.085
The equipment detects an incorrect placement of the NTC sensors.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.087
There is a missing connection between the ignition transformer and the PCB.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.088
The electrical connection of the gas valve is lost.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.089
The integrated pump does not match the model identified by the device.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.092
The gas type adaptation has not been completed correctly.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.095
The gas valve actuator reaches its minimum step limit.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.096
The gas valve actuator reaches its maximum step limit.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.105
The adaptation of the gas valve requires inspection after replacing control components.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.194
Fault in the power supply of the PCB.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.195
The supply voltage drops significantly.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.196
The supply voltage increases significantly.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.317
The reading of the domestic hot water flow is not coherent.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.318
The three-way motorized valve does not move.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.320
The pump remains locked after the automatic unlocking attempt.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.321
Electronic fault warning in the pump.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.322
The pump overheats and the emergency mode does not reduce its temperature.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.323
Pump operation detected without water.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.324
The electrical connection of the pumps is interrupted.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.325
The control detects a fault in the heating pump.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.326
The hydraulic test detects at least two components that are not functioning.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.327
The lack of connection of the sanitary circuit limits the minimum flow of heating.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.344
The control indicates that the regulation electrode can no longer be used.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.346
The ignition fails with a sudden start condition.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.363
Memory read or write error on the display.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.390
Initialization does not complete after updating the software.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.707
The screen and the PCB are unable to communicate.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Code / warningF.905
The interface loses communication with the CIM module.
Saunier Duval IsoFast H-Condens · MA36-CF/1 · N-INT
Duomax Condens 35/90
Manual and codes by version
Documented entries for this family. The coverage does not extend to other models or editions.
49 visible alerts
Code / warningF.00
The input temperature signal has been interrupted.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.01
The return temperature signal has been interrupted.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.02
Warning from the sensor that controls the accumulator load.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.03
Temperature sensor warning of the accumulator.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.10
The inlet temperature signal is short-circuited.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.11
The return temperature signal shows a short circuit.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.12
Short circuit in the load sensor circuit of the accumulator.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.13
Short circuit in the accumulator sensor circuit.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.20
The temperature limiter has caused a safety shutdown.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.22
The device has stopped due to a lack of water condition.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.23
The temperature difference between the inlet and return exceeds the expected margin.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.24
The temperature is rising too quickly.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.25
A safety feature associated with connector X20 has been activated.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.26
The control does not manage to operate the gas valve correctly.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.27
The control detects a flame signal that does not correspond to the expected state.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.28
The ignition has not been completed during the start-up.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.29
The ignition attempts have failed during operation.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.32
The control detects a fan anomaly.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.35
Insufficient air supply to the combustion assembly is detected.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.42
The resistor that identifies the configuration has an anomaly.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.47
The signal from the domestic hot water sensor at the outlet of the accumulator has been interrupted.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.48
Short circuit in the signal of the domestic hot water sensor at the outlet of the accumulator.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.49
The eBUS communication is experiencing an anomaly.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.52
The control does not correctly receive the connection from the circulating flow sensor.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.53
The signal from the circulating flow sensor shows an anomaly.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.54
Gas pressure warning, associated in the manual with F.28 or F.29.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.56
Anomaly in the regulation related to the circulating flow sensor.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.57
A fault has occurred during the safety operating mode.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.61
Anomaly in the electrical control of the gas valve system.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.62
The gas shut-off or the disappearance of the flame signal is detected with a delay.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.63
The EEPROM electronic memory has a fault.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.64
Notice affecting the electronics or NTC temperature signals.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.65
The control detects an excessive temperature in the electronics.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.67
The electronics receive a non-coherent flame signal.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.68
The flame signal is unstable.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.70
The electronic identification of the device, DSN, is not valid.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.71
The inlet sensor records a temperature that remains constant.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.72
The inlet and return temperature signals show an abnormal difference.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.73
The pressure sensor signal is below its valid range.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.74
The pressure sensor signal is above its valid range.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.75
The flow detected when starting the pump is insufficient.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.77
The expected response from the gas damper or the condensate pump is missing.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.81
Notice related to the charging pump of the accumulator.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.82
Anomaly in the external current anode circuit.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.83
When starting the burner, the sensors do not detect the expected temperature variation.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.84
The measured temperatures at the inlet and return are not consistent.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.85
The control detects an incorrect arrangement of the inlet or return sensors.
Duomax Condens 35/90 · Manual and codes by version
Code / warningF.86
Notice of the safety contact associated with underfloor heating.
Duomax Condens 35/90 · Manual and codes by version
Code / warningCommunication
The display cannot communicate with the control board.
Duomax Condens 35/90 · Manual and codes by version
Communication fault without a literal code in the manual table 0020181407_02, page 43. This label describes the warning; it is not a display code.
Saunier Duval IsoMax Condens / MiConnect
T35-CS/1 N-ES
Documented entries for this family. The coverage does not extend to other models or editions.
69 visible notices
Code / warningF.000
The signal from the supply temperature sensor has been interrupted.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.001
The signal from the return temperature sensor has been interrupted.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.002
The signal from the domestic hot water temperature sensor has been interrupted.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.003
The signal from the temperature sensor of the accumulator has been interrupted.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.010
A short circuit has occurred in the supply temperature sensor.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.011
A short circuit has occurred in the return temperature sensor.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.012
The temperature sensor of the hot water connection is short-circuited.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.013
A short circuit has occurred in the temperature sensor of the accumulator.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.020
The safety temperature limiter (STB) interrupts the control of the gas valve. The gas valve has closed because the temperature of the supply or return temperature sensor has exceeded the maximum limit.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.022
There is no water in the product, it is insufficient, or the water pressure is too low.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.023
The temperature difference between the supply and return is excessive.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.024
The temperature increase is too rapid.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.025
The temperature of the combustion gases is too high.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.027
A flame signal was detected and the burner is off.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.028
During the ignition phase, the flame signal was not detected.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.029
The ignition failed due to lack of flame during operation.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.032
The fan speed is out of tolerance.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.035
The air intake/exhaust duct is blocked.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.040
The air excess factor is too low.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.042
The coding resistor (in the wiring harness) or the gas group resistor (on the PCB if it exists) is not valid.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.044
The ionization signal of the regulation electrode is too low. The drift adaptation has failed.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.047
The signal from the domestic hot water temperature sensor at the outlet of the internal accumulator is not plausible.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.049
The eBUS is short-circuited or two active eBUS sources have reversed polarity.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.057
The combustion regulation has failed and so has the corresponding emergency mode.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.061
ASIC or µController does not operate within the defined time limits.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.062
The flame disconnection is detected with a delay.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.063
EEPROM warns of an error during the read and write test.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.064
The sensor signal could not be converted correctly.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.065
The operating temperature range of an electronic component has been exceeded.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.067
The flame controller is faulty.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.068
The flame controller reports an unstable signal.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.070
The device identification (DSN) is incorrect, missing, or does not match the coding resistance.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.071
The supply temperature sensor records implausible values.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.072
The temperature difference between the supply and return temperature sensors is not valid.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.073
The water pressure sensor is short-circuited.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.074
The signal from the water pressure sensor is interrupted.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.075
The pressure jump at the start of the heating pump is too low.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.077
A condensate pump or a flue gas non-return valve block the operation of the burner.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.078
The control module is not supported by the device.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.080
The cold water inlet temperature sensor in the internal storage tank is faulty.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.081
The boost has failed.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.083
When starting the burner, no increase in temperature is recorded, or an increase is recorded too slowly on the supply or return temperature sensor.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.084
The temperature difference between the supply and return temperature sensor results in implausible values.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.085
The NTC sensors are incorrectly mounted.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.087
The ignition transformer is not connected to the PCB.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.088
The electrical connection with the gas valve has been interrupted.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.089
The integrated heating pump is not suitable for the appliance model.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.092
The gas type change has not been completed correctly.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.095
The stepper motor of the gas valve has reached the minimum allowed number of steps.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.096
The stepper motor of the gas valve has reached the maximum allowed number of steps.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.105
If the gas valve or the PCB is replaced along with the device interface, the gas valve deviation must be adjusted to match the current gas valve.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.194
The power supply of the PCB is faulty.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.195
The device has detected a significant undervoltage in the power supply.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.196
The device has detected a significant overvoltage in the power supply.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.317
The flow sensor signal in the domestic hot water circuit is not plausible.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.318
The 3-way motorised valve is not moving.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.320
The heating pump is blocked. The unlocking function has not been performed correctly.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.321
The pump electronics are faulty.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.322
The heating pump is overheating. The emergency operation has not been able to reduce the temperature.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.323
The heating pump is running dry.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.324
The electrical connection of the pumps has been interrupted.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.325
The heating pump has a fault.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.326
The hydraulic test of the sensor and the actuator has determined that at least two hydraulic components are not functioning.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.327
Due to a domestic hot water circuit not connected, the minimum volumetric flow rate of the heating is limited.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.344
The regulation electrode cannot continue to be used.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.346
A hard ignition has been detected. The ignition has failed.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.363
The EEPROM on the display warns of an error during the read and write test.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.707
It is not possible to establish any communication between the display and the PCB.
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Code / warningF.905
Communication interface disconnected
Saunier Duval IsoMax Condens / MiConnect T35-CS/1 N-ES
Saunier Duval IsoFast MiConnect
MA35-CS/1
Documented entries for this family. The coverage does not extend to other models or editions.
69 visible notices
Code / warningF.000
The signal from the supply temperature sensor has been interrupted.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.001
The signal from the return temperature sensor has been interrupted.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.002
The signal from the domestic hot water temperature sensor has been interrupted.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.003
The signal from the temperature sensor of the accumulator has been interrupted.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.010
A short circuit has occurred in the supply temperature sensor.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.011
A short circuit has occurred in the return temperature sensor.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.012
The temperature sensor of the hot water connection is short-circuited.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.013
A short circuit has occurred in the temperature sensor of the accumulator.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.020
The safety temperature limiter (STB) interrupts the control of the gas valve. The gas valve has closed because the temperature of the supply or return temperature sensor has exceeded the maximum limit.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.022
There is no water in the product, it is insufficient, or the water pressure is too low.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.023
The temperature difference between the supply and return is excessive.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.024
The temperature increase is too rapid.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.025
The temperature of the combustion gases is too high.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.027
A flame signal was detected and the burner is off.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.028
During the ignition phase, the flame signal was not detected.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.029
The ignition failed due to lack of flame during operation.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.032
The fan speed is out of tolerance.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.035
The air intake/exhaust duct is blocked.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.040
The air excess factor is too low.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.042
The coding resistor (in the wiring harness) or the gas group resistor (on the PCB if it exists) is not valid.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.044
The ionization signal of the regulation electrode is too low. The drift adaptation has failed.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.047
The signal from the domestic hot water temperature sensor at the outlet of the internal accumulator is not plausible.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.049
The eBUS is short-circuited or two active eBUS sources have reversed polarity.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.057
The combustion regulation has failed and so has the corresponding emergency mode.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.061
ASIC or µController does not operate within the defined time limits.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.062
The flame disconnection is detected with a delay.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.063
EEPROM warns of an error during the read and write test.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.064
The sensor signal could not be converted correctly.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.065
The operating temperature range of an electronic component has been exceeded.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.067
The flame controller is faulty.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.068
The flame controller reports an unstable signal.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.070
The device identification (DSN) is incorrect, missing, or does not match the coding resistance.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.071
The supply temperature sensor records implausible values.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.072
The temperature difference between the supply and return temperature sensors is not valid.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.073
The water pressure sensor is short-circuited.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.074
The signal from the water pressure sensor is interrupted.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.075
The pressure jump at the start of the heating pump is too low.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.077
A condensate pump or a flue gas non-return valve block the operation of the burner.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.078
The control module is not supported by the device.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.080
The cold water inlet temperature sensor in the internal storage tank is faulty.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.081
The boost has failed.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.083
When starting the burner, no increase in temperature is recorded, or an increase is recorded too slowly on the supply or return temperature sensor.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.084
The temperature difference between the supply and return temperature sensor results in implausible values.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.085
The NTC sensors are incorrectly mounted.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.087
The ignition transformer is not connected to the PCB.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.088
The electrical connection with the gas valve has been interrupted.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.089
The integrated heating pump is not suitable for the appliance model.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.092
The gas type change has not been completed correctly.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.095
The stepper motor of the gas valve has reached the minimum allowed number of steps.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.096
The stepper motor of the gas valve has reached the maximum allowed number of steps.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.105
If the gas valve or the PCB is replaced along with the device interface, the gas valve deviation must be adjusted to match the current gas valve.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.194
The power supply of the PCB is faulty.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.195
The device has detected a significant undervoltage in the power supply.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.196
The device has detected a significant overvoltage in the power supply.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.317
The flow sensor signal in the domestic hot water circuit is not plausible.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.318
The 3-way motorised valve is not moving.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.320
The heating pump is blocked. The unlocking function has not been performed correctly.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.321
The pump electronics are faulty.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.322
The heating pump is overheating. The emergency operation has not been able to reduce the temperature.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.323
The heating pump is running dry.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.324
The electrical connection of the pumps has been interrupted.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.325
The heating pump has a fault.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.326
The hydraulic test of the sensor and the actuator has determined that at least two hydraulic components are not functioning.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.327
Due to a domestic hot water circuit not connected, the minimum volumetric flow rate of the heating is limited.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.344
The regulation electrode cannot continue to be used.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.346
A hard ignition has been detected. The ignition has failed.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.363
The EEPROM on the display warns of an error during the read and write test.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.707
It is not possible to establish any communication between the display and the PCB.
Saunier Duval IsoFast MiConnect MA35-CS/1
Code / warningF.905
Communication interface disconnected
Saunier Duval IsoFast MiConnect MA35-CS/1
Saunier Duval Thema MiConnect
26-CS/1, 31-CS/1 and AS30-CS/1
Documented entries for this family. The coverage does not extend to other models or editions.
82 visible alerts
Code / warningF.000
The signal from the supply temperature sensor has been interrupted.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.001
The signal from the return temperature sensor has been interrupted.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.002
The signal from the domestic hot water temperature sensor has been interrupted.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.003
The signal from the temperature sensor of the accumulator has been interrupted.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.010
A short circuit has occurred in the supply temperature sensor.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.011
A short circuit has occurred in the return temperature sensor.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.012
The temperature sensor of the hot water connection is short-circuited.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.013
A short circuit has occurred in the temperature sensor of the accumulator.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.020
The safety temperature limiter (STB) interrupts the control of the gas valve. The gas valve has closed because the temperature of the supply or return temperature sensor has exceeded the maximum limit.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.022
There is no water in the product, it is insufficient, or the water pressure is too low.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.023
The temperature difference between the supply and return is excessive.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.024
The temperature increase is too rapid.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.025
The temperature of the combustion gases is too high.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.027
A flame signal was detected and the burner is off.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.028
During the ignition phase, the flame signal was not detected.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.029
The ignition failed due to lack of flame during operation.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.032
The fan speed is out of tolerance.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.035
The air intake/exhaust duct is blocked.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.040
The air excess factor is too low.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.042
The coding resistor (in the wiring harness) or the gas group resistor (on the PCB if it exists) is not valid.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.044
The ionization signal of the regulation electrode is too low. The drift adaptation has failed.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.047
The signal from the domestic hot water temperature sensor at the outlet of the internal accumulator is not plausible.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.049
The eBUS is short-circuited or two active eBUS sources have reversed polarity.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.057
The combustion regulation has failed and so has the corresponding emergency mode.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.061
ASIC or µController does not operate within the defined time limits.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.062
The flame disconnection is detected with a delay.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.063
EEPROM warns of an error during the read and write test.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.064
The sensor signal could not be converted correctly.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.065
The operating temperature range of an electronic component has been exceeded.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.067
The flame controller is faulty.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.068
The flame controller reports an unstable signal.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.070
The device identification (DSN) is incorrect, missing, or does not match the coding resistance.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.071
The supply temperature sensor records implausible values.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.072
The temperature difference between the supply and return temperature sensors is not valid.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.074
The signal from the water pressure sensor is interrupted.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.075
The pressure jump at the start of the heating pump is too low.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.076
The overheating protection of the primary heat exchanger is active.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.077
A condensate pump or a flue gas non-return valve block the operation of the burner.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.078
The control module is not supported by the device.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.080
The cold water inlet temperature sensor in the internal storage tank is faulty.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.081
The boost has failed.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.083
When starting the burner, no increase in temperature is recorded, or an increase is recorded too slowly on the supply or return temperature sensor.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.084
The temperature difference between the supply and return temperature sensor results in implausible values.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.085
The NTC sensors are incorrectly mounted.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.087
The ignition transformer is not connected to the PCB.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.088
The electrical connection with the gas valve has been interrupted.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.089
The integrated heating pump is not suitable for the appliance model.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.092
The gas type change has not been completed correctly.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.095
The stepper motor of the gas valve has reached the minimum allowed number of steps.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.096
The stepper motor of the gas valve has reached the maximum allowed number of steps.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.097
The self-check of the main PCB has failed.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.105
When replacing a gas valve or a printed circuit board and the display simultaneously, it will be necessary to adjust the gas valve deviation to match that of the current gas valve.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.110
A correct ignition could not be detected with the enriched air and gas mixture.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.194
The power supply of the PCB is faulty.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.195
The device has detected a significant undervoltage in the power supply.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.196
The device has detected a significant overvoltage in the power supply.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.228
The device was in emergency mode. In that state, it could not be turned on during the ignition phase.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.229
The device was in emergency mode. In that state, it could not ignite due to a flame failure.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.281
The flame has failed during the stabilization period.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.291
The flame has failed during the stabilization time due to a flame loss during operation.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.317
The flow sensor signal in the domestic hot water circuit is not plausible.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.318
The 3-way motorised valve is not moving.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.320
The heating pump is blocked. The unblocking function was not successful.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.321
The pump electronics are faulty.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.322
The heating pump is overheating. The emergency operation has not been able to reduce the temperature.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.323
The heating pump is running dry.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.324
The electrical connection of the pumps has been interrupted.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.325
The heating pump has a fault.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.326
The hydraulic test of the sensor and the actuator has determined that at least two hydraulic components are not functioning.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.327
Due to a domestic hot water circuit not connected, the minimum volumetric flow rate of the heating is limited.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.330
The pump does not respond to commands during the hydraulic test.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.334
The configuration of the combustion gas exhaust installation has not been completed.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.336
The device is not allowed in this configuration.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.337
The multiple gas outlet conversion kit does not fit the heat cell.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.338
Incorrect multiple occupancy allocation adjustment
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.342
The air flow sensor is not within the permitted limits.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.343
The signal from the mass air flow sensor is not plausible.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.344
The regulation electrode cannot continue to be used.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.347
Condensate has been detected in the combustion chamber. The operation of the burner will be interrupted.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.363
The EEPROM on the display warns of an error during the read and write test.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.707
It is not possible to establish any communication between the display and the PCB.
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Code / warningF.905
Communication interface disconnected
Saunier Duval Thema MiConnect · 26-CS/1, 31-CS/1 and AS30-CS/1
Saunier Duval ThemaFast MiConnect
MA26-CS/1 and MA31-CS/1
Documented entries for this family. The coverage does not extend to other models or editions.
69 visible notices
Code / warningF.000
The signal from the supply temperature sensor has been interrupted.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.001
The signal from the return temperature sensor has been interrupted.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.002
The signal from the domestic hot water temperature sensor has been interrupted.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.003
The signal from the temperature sensor of the accumulator has been interrupted.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.010
A short circuit has occurred in the supply temperature sensor.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.011
A short circuit has occurred in the return temperature sensor.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.012
The temperature sensor of the hot water connection is short-circuited.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.013
A short circuit has occurred in the temperature sensor of the accumulator.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.020
The safety temperature limiter (STB) interrupts the control of the gas valve. The gas valve has closed because the temperature of the supply or return temperature sensor has exceeded the maximum limit.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.022
There is no water in the product, it is insufficient, or the water pressure is too low.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.023
The temperature difference between the supply and return is excessive.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.024
The temperature increase is too rapid.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.025
The temperature of the combustion gases is too high.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.027
A flame signal was detected and the burner is off.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.028
During the ignition phase, the flame signal was not detected.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.029
The ignition failed due to lack of flame during operation.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.032
The fan speed is out of tolerance.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.035
The air intake/exhaust duct is blocked.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.040
The air excess factor is too low.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.042
The coding resistor (in the wiring harness) or the gas group resistor (on the PCB if it exists) is not valid.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.044
The ionization signal of the regulation electrode is too low. The drift adaptation has failed.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.047
The signal from the domestic hot water temperature sensor at the outlet of the internal accumulator is not plausible.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.049
The eBUS is short-circuited or two active eBUS sources have reversed polarity.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.057
The combustion regulation has failed and so has the corresponding emergency mode.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.061
ASIC or µController does not operate within the defined time limits.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.062
The flame disconnection is detected with a delay.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.063
EEPROM warns of an error during the read and write test.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.064
The sensor signal could not be converted correctly.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.065
The operating temperature range of an electronic component has been exceeded.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.067
The flame controller is faulty.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.068
The flame controller reports an unstable signal.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.070
The device identification (DSN) is incorrect, missing, or does not match the coding resistance.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.071
The supply temperature sensor records implausible values.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.072
The temperature difference between the supply and return temperature sensors is not valid.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.073
The water pressure sensor is short-circuited.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.074
The signal from the water pressure sensor is interrupted.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.075
The pressure jump at the start of the heating pump is too low.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.077
A condensate pump or a flue gas non-return valve block the operation of the burner.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.078
The control module is not supported by the device.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.080
The cold water inlet temperature sensor in the internal storage tank is faulty.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.081
The boost has failed.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.083
When starting the burner, no increase in temperature is recorded, or an increase is recorded too slowly on the supply or return temperature sensor.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.084
The temperature difference between the supply and return temperature sensor results in implausible values.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.085
The NTC sensors are incorrectly mounted.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.087
The ignition transformer is not connected to the PCB.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.088
The electrical connection with the gas valve has been interrupted.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.089
The integrated heating pump is not suitable for the appliance model.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.092
The gas type change has not been completed correctly.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.095
The stepper motor of the gas valve has reached the minimum allowed number of steps.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.096
The stepper motor of the gas valve has reached the maximum allowed number of steps.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.105
If the gas valve or the PCB is replaced along with the device interface, the gas valve deviation must be adjusted to match the current gas valve.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.194
The power supply of the PCB is faulty.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.195
The device has detected a significant undervoltage in the power supply.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.196
The device has detected a significant overvoltage in the power supply.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.317
The flow sensor signal in the domestic hot water circuit is not plausible.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.318
The 3-way motorised valve is not moving.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.320
The heating pump is blocked. The unlocking function has not been performed correctly.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.321
The pump electronics are faulty.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.322
The heating pump is overheating. The emergency operation has not been able to reduce the temperature.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.323
The heating pump is running dry.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.324
The electrical connection of the pumps has been interrupted.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.325
The heating pump has a fault.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.326
The hydraulic test of the sensor and the actuator has determined that at least two hydraulic components are not functioning.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.327
Due to a domestic hot water circuit not connected, the minimum volumetric flow rate of the heating is limited.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.344
The regulation electrode cannot continue to be used.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.346
A hard ignition has been detected. The ignition has failed.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.363
The EEPROM on the display warns of an error during the read and write test.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.707
It is not possible to establish any communication between the display and the PCB.
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Code / warningF.905
Communication interface disconnected
Saunier Duval ThemaFast MiConnect MA26-CS/1 and MA31-CS/1
Saunier Duval Thema Condens 25-A
Manufacturer's manual
Documented entries for this family. The coverage does not extend to other models or editions.
39 visible alerts
Code / warningF.00
Interruption of the inlet temperature sensor
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.01
Return temperature sensor interruption
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.10
Short circuit in the inlet temperature sensor.
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.11
Short circuit in the return temperature sensor
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.13
Short circuit of the accumulator sensor
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.20
Safety shutdown: temperature limiter
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.22
Safety shutdown: lack of water
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.23
Safety shutdown: excessive temperature variation
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.24
Safety shutdown: temperature rise too fast
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.26
Fault: gas valve not functioning
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.27
Safety shutdown: incorrect flame detection
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.28
Start-up fault: ignition failed
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.29
Operating fault: failed ignition attempts
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.32
Fault: fan
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.42
Resistance fault coding (probably in combination with F.70)
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.49
Fault: eBUS
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.52
Fault in the connection of the circulating flow sensor
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.53
Fault in the circulating flow sensor
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.54
Gas pressure fault (in combination with F.28/F.29)
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.56
Fault in the regulation of the circulating flow sensor
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.57
Fault during comfortable safety operation
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.61
Gas valve control fault
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.62
Gas valve fault. Disconnection delay
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.63
EEPROM fault
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.64
Electronic fault / NTC
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.65
Fault: PCB temperature
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.67
Fault: electronics/flame
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.68
Flame signal fault (unstable)
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.70
Invalid product code (DSN)
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.71
Fault of the heating flow temperature sensor
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.72
Fault in the inlet and return temperature sensors.
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.73
Water pressure sensor signal out of range (too low)
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.74
Water pressure sensor signal out of range (too low)
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.77
Fault in flue gas damper/condensate pump
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.79
Accumulator temperature sensor fault
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.83
Fault: temperature adjustment in the supply and/or return temperature sensors
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.84
Fault: temperature sensor difference between supply/return, not plausible.
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.85
Fault: incorrect installation of the inlet or return temperature sensor
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Code / warningF.86
Fault: floor contact
Saunier Duval Thema Condens 25-A · Manufacturer's manual
Saunier Duval Semia Condens 25-A and 30-A
0020199140_06
Documented entries for this family. The coverage does not extend to other models or editions.
37 visible alerts
Code / warningF.00
Fault: flow temperature sensor
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.01
Fault: return temperature sensor
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.10
Short circuit: supply temperature sensor
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.11
Short circuit: return temperature sensor
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.13
Short circuit: domestic hot water accumulator temperature sensor
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.20
Safety shutdown: overheating temperature reached
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.22
Safety shutdown: lack of water in the boiler
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.23
Safety shutdown: temperature variation too large (NTC1/NTC2)
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.24
Safety shutdown: temperature rise too fast
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.25
Safety disconnection: flue gas temperature very high
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.27
Safety disconnection: flame detection error
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.28
Fault: unsuccessful ignition on start-up
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.29
Fault: flame loss
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.32
Frost protection function of the fan activated: the fan speed exceeds the tolerance values.
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.49
eBUS error: current too low
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.61
Error: gas valve control
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.62
Error: gas valve disconnection controller
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.63
Error: EEPROM
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.64
Fault: PCB / sensor / analog to digital transformer
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.65
Error: electronics temperature too high
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.67
Incorrect return value from ASIC (flame signal)
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.68
Error: unstable flame (analog input)
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.70
Invalid product code (DSN)
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.71
Fault: supply/return temperature sensor
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.72
Error: deviation of the water pressure sensor/return temperature sensor
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.73
Error: water pressure sensor not connected or short-circuited
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.74
Error: electrical problem with the water pressure sensor
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.75
Fault: pressure sensor
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.77
Fault: condensate or smoke
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.78
Interruption of the domestic hot water outlet sensor in the external controller
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.83
Fault: Dry fire
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.84
Fault: supply/return temperature sensor
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.85
Fault: temperature sensor
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.86
Fault: underfloor heating contact
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.87
Fault: ignition electrode
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.88
Fault: gas valve assembly
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Code / warningF.89
Error: pump
Saunier Duval Semia Condens 25-A and 30-A · 0020199140_06
Saunier Duval Thelia Condens 25-A
25-A H-ES
Documented entries for this family. The coverage does not extend to other models or editions.
37 visible alerts
Code / warningF.00
Fault: flow temperature sensor
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.01
Fault: return temperature sensor
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.10
Short circuit: supply temperature sensor
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.11
Short circuit: return temperature sensor
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.13
Short circuit: domestic hot water accumulator temperature sensor
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.20
Safety shutdown: overheating temperature reached
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.22
Safety shutdown: lack of water in the boiler
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.23
Safety shutdown: temperature variation too large (NTC1/NTC2)
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.24
Safety shutdown: temperature rise too fast
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.25
Safety disconnection: flue gas temperature very high
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.27
Safety disconnection: flame detection error
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.28
Fault: unsuccessful ignition on start-up
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.29
Fault: flame loss
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.32
Frost protection function of the fan activated: the fan speed exceeds the tolerance values.
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.49
eBUS error: current too low
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.61
Error: gas valve control
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.62
Error: gas valve disconnection controller
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.63
Error: EEPROM
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.64
Fault: PCB / sensor / analog to digital transformer
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.65
Error: electronics temperature too high
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.67
Incorrect return value from ASIC (flame signal)
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.68
Error: unstable flame (analog input)
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.70
Invalid product code (DSN)
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.71
Fault: supply/return temperature sensor
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.72
Error: deviation of the water pressure sensor/return temperature sensor
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.73
Error: water pressure sensor not connected or short-circuited
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.74
Error: electrical problem with the water pressure sensor
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.75
Fault: pressure sensor
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.77
Fault: condensate or smoke
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.78
Interruption of the domestic hot water outlet sensor in the external controller
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.83
Fault: Dry fire
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.84
Fault: supply/return temperature sensor
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.85
Fault: temperature sensor
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.86
Fault: underfloor heating contact
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.87
Fault: ignition electrode
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.88
Fault: gas valve assembly
Saunier Duval Thelia Condens 25-A · 25-A H-ES
Code / warningF.89
Error: pump
Saunier Duval Thelia Condens 25-A · 25-A H-ES
We cannot find that warning for the selection. Check the model and the complete code. If it still does not appear, consult its manual or request a diagnosis; do not use that of another family.
What to do with this information?
Note the warning and the exact model. Please indicate the pressure displayed on the screen and whether the fault affects the domestic hot water, heating, or both services.
Check the external checks in the user instructions for your equipment. Do not open the casing or interfere with gas, electricity, or combustion. If the fault persists or reappears, request professional diagnosis before repeating resets or changing spare parts.
Saunier Duval models and specific guides
Check the complete reference.
Differentiate the MiConnect and Condens ranges from the previous versions: the same number can have different writing and applicability.
The inquiry covers the indicated families and documents, not all the boilers manufactured by the brand.
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- Duomax Condens 35/90Manual and codes by version49 notices on this pageModel-specific guide
- Saunier Duval IsoMax Condens / MiConnectT35-CS/1 N-ES69 notices on this pageModel-specific guide
- Saunier Duval IsoFast MiConnectMA35-CS/169 notices on this pageModel-specific guide
- Saunier Duval Thema MiConnect26-CS/1, 31-CS/1 and AS30-CS/182 notices on this pageModel-specific guide
- Saunier Duval ThemaFast MiConnectMA26-CS/1 and MA31-CS/169 notices on this pageModel-specific guide
- Saunier Duval Thema Condens 25-AManufacturer's manual39 notices on this pageModel-specific guide
- Saunier Duval Semia Condens 25-A and 30-A0020199140_0637 notices on this pageModel-specific guide
- Saunier Duval Thelia Condens 25-A25-A H-ES37 notices on this pageModel-specific guide
- Saunier Duval ThemaClassic F 25Include ThemaClassic C 25, C AS 25, F 25 and F AS 25. Check the variant; this document is for use.User manual available; it does not contain a verifiable code equivalence table.Model-specific guide
Other Saunier Duval guides
They retain their specific information. Their tables do not mix with the previous families.
Saunier Duval PDF manuals by model
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Saunier Duval IsoFast H-Condens
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Edition 0020298498_00 (04/22/2021), identifying N-INT. Copy of the manufacturer's document retrieved from a public archive; it is not presented as the latest edition.
Saunier Duval ThemaClassic F 25
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Include ThemaClassic C 25, C AS 25, F 25 and F AS 25. Check the variant; this document is for use.