| F.63 | EEPROM fault. | The integrated EEPROM memory on the main board is damaged; the manufacturer advises replacing the board. Check that it is not a power/grounding issue and, if it persists, replace the PCB. |
| F.65 | Electronic temp. fault. | The PCB electronics are overheated or defective. Check the temperature of the compartment and, if the fault persists, check/replace the PCB. |
| F.64 | Electronic fault/sensor. | A defect in the PCB electronics affects the reading/management of safety sensors. Check the NTC and wiring; if they are correct, the cause is the PCB. |
| F.61 | Fuel valve control fault. | The PCB does not properly excite the gas valve or detects an electrical fault in the circuit. Check the coils and harness; if they are fine, the main PCB is the cause. |
| F.62 | Fuel valve disconnection delay fault. | The electronics keep the gas valve energized or improperly manage the flame extinction. Check the valving/ionization; if correct, replace the PCB. |
| F.67 | Electronic/flame fault. | The flame detection electronics on the PCB give an implausible signal or are damaged. Check ionisation/grounding and, if they are fine, the PCB is the cause. |
| F.27 | Safety shutdown, flame simulation. | Moisture/fault in the flame control circuit of the PCB can cause false detection. Check electrode/ground; if the defect persists, replace the PCB. |
| F.32 | Fault: fan. | A fault in the PCB electronics (power supply/fan reading or Hall sensor) can trigger this code. Check connectors, Hall sensor, and inspect the PCB. |
| F.70 | Fault: invalid appliance code (DSN). | After replacing the display and/or main PCB, the identification of the appliance was not reprogrammed, or there is an incorrect coding resistor. Verify and adjust d.93; if it does not accept the coding, the PCB may be damaged. |
