Saunier Duval Thelia Condens 25A PCB Ref. 0020204481
The Saunier Duval Thelia Condens 25A PCB is the component responsible for controlling the ignition, burner modulation, pump, and safety features of the boiler. When the PCB fails, the boiler may not start, may lock out, or may exhibit erratic behavior. It can display fault codes such as F.61, F.62, F.63, F.64, or F.65. This part is compatible with boilers from the Thelia Condens range, such as the Thelia Condens 25-A model, and is also installed in models from the Semia Condens range. It is recommended to replace the PCB when the mentioned symptoms or fault codes occur.
VAT included
Consult via WhatsAppSaunier Duval boilers compatible with reference 0010047388
PCB with reference 0010047388. Three confirmed compatibilities: Thelia Condens 25-A and Semia Condens 25.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Saunier Duval Thelia Condens 25-A | Thelia Condens | Contrasted |
| Saunier Duval Semia Condens 25 | Semia Condens | Contrasted |
| Saunier Duval Semia Condens 30 | Semia Condens | Contrasted |
Can't see your model or have questions? The printed reference takes precedence. How to check it · Send us a photo via WhatsApp.
How to check if the reference 0010047388 is the part for your boiler.
What determines it is not the boiler model, but the reference printed on the part you already have installed.
- Find the reference printed on the installed part and check whether it matches the catalogue reference 0010047388. If it is not visible, do not identify the part from its shape alone.
- Check the full boiler model on its data plate and look for it in the model associations on this page.
- Compare the connections and physical body with the original part before installation.
- If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.
Symptoms and faults that the PCB 0010047388 resolves.
The PCB controls the ignition, modulation, and safety features of the boiler. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
The boiler ignites, but the flame fluctuates uncontrollably, as if it were breathing.
Cause: The PCB does not properly modulate the signal to the gas valve or the fan, which causes instability in the combustion.
Check that the flow temperature sensor and the fan are working properly separately; if both are correct, suspect the PCB.
- 02
An error code appears on the screen that does not match any real issue with the installation.
Cause: The PCB misinterprets the signal from a sensor or generates the fault code due to an internal failure in its circuits.
Note the exact code and compare it with the manual before ruling out that the indicated sensor is the one that is faulty.
- 03
The boiler frequently locks out and needs to be reset several times a day.
Cause: An intermittent fault in the PCB causes the protection to trip even though the rest of the boiler is in good condition.
Keep track of what time and in which phase of the cycle it gets blocked; a fixed pattern may indicate a problem with an external component.
- 04
The domestic hot water comes out at an irregular temperature, sometimes cold and other times very hot.
Cause: The PCB manages the priority and modulation of the domestic hot water circuit, and a fault in it disrupts the response of the gas valve.
Check that the 3-way valve has physically changed position before considering the PCB.
Fault codes from Saunier Duval that this spare part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| F.61 | Error: gas valve control | The driver/output of the valve control on the main PCB can fail (defective electronics), causing detection of shorts or anomalous control. Check the power supply and wiring to the valve; if there is an incorrect control signal with wiring and valve OK, the PCB is damaged. |
| F.62 | Error: gas valve disconnection controller | The PCB electronics may not shut off the gas valve in time or may misinterpret the flame signal (defective electronics). Check the valve closure and flame signal; if the issue persists with the correct valve and electrodes, replace the PCB. |
| F.63 | Error: EEPROM | Fault in the EEPROM memory integrated into the main PCB, preventing correct reading/writing. Check for stable voltages and, if the fault persists after a factory reset, replace the PCB. |
| F.64 | Fault: PCB / sensor / analog to digital transformer | Fault in the A/D circuit of the PCB (control board) that interprets NTC/analog inputs. First, rule out shorts in the NTC and wiring; if readings remain erratic with standard resistors, the PCB is faulty. |
| F.65 | Error: electronics temperature too high | The internal sensor/thermistor or the control stage of the PCB detects overheating or a fault (electronics failure). Check ventilation and ambient temperature; if normal and the error persists, the sensor/control stage of the PCB is damaged. |
| F.67 | Incorrect value returned by ASIC (flame signal) | The ASIC circuitry/flame detection on the PCB may return implausible values (electronics fault). Check ionization, electrode, and ground; if ionization µA are correct and it fails, replace the PCB. |
| F.70 | Invalid product code (DSN) | After replacing the main PCB and/or display without reparameterizing the DSN, the boiler detects an invalid combination. Verify and reconfigure the DSN according to the service manual; if it does not accept coding, the PCB is incorrect/defective. |
These symptoms can have more than one cause. If your boiler displays a fault code, send it to us via WhatsApp along with a photo of the labeling, and we'll tell you if this is the part.
Data sheet for the Saunier Duval PCB 0010047388
- Catalogue reference
- 0010047388
- Brand
- Saunier Duval
- Type of part
- PCBs (control boards)
- Units in stock
- 1 unit
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- 1-2 business days
- Return
- 14 days
Data read on the part and in the manufacturer's documentation
What we have not been able to verify does not appear here.
- Factory code
- 0020204481
- Secondary code
- 10145292R
- Batch production
- 981
- 0010047388 and 0020204481 are not equivalent or interchangeable parts: they are PCBs from different ranges. If your part has the reference 0010047388, this data sheet does not correspond to your PCB.
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Saunier Duval Thelia Condens 25-A Manual (PDF)Document © Saunier Duval, provided as a technical reference.
Frequently asked questions about the PCB 0010047388
Does this PCB work for the Saunier Duval Semia Condens 25A?
Is the reference for this PCB 0010047388 or 0020204481?
What secondary code is included on the label of this PCB, in addition to the main reference?
Are 0010047388 and 0020204481 the same PCB for the Thelia Condens 30A?
Spare parts related to Saunier Duval Semia Condens
