PCB Boiler Saunier Duval Themafast Condens F30
The PCB for the Saunier Duval Themafast Condens F30 boiler is the component responsible for controlling the ignition, burner modulation, pump, and safety functions of the boiler. When it malfunctions, you may notice that the boiler does not start, locks out, or behaves erratically. This board is compatible with the Themafast range, including the Condens F30 model, among others. It is recommended to replace the board when fault codes such as F.63, F.64, F.65, F.42, or F.70 appear.
VAT included
Consult via WhatsAppSaunier Duval boilers compatible with reference 0020204482
PCB with reference 0020204482. A proven compatibility: Condens F30.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Saunier Duval Condens F30 | Themafast | 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 ref. 0020204482 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 0020204482. 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 0020204482 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 does not turn on, not even a single indicator light, as if it were unplugged.
Cause: The PCB distributes power to the electronics; if its input fails, current does not reach other components.
Check that there is voltage to the boiler and that the internal fuse of the PCB is not blown before declaring it faulty.
- 02
The display shows a persistent fault code that does not clear even after resetting the boiler several times.
Cause: The PCB collects signals from the connected sensors and locks the equipment if it detects an anomaly.
Check the fault code in the manual: many point to a specific sensor connected to the PCB, not to the PCB itself.
- 03
The circulation pump does not start even though the boiler requests heating.
Cause: The pump is controlled from the output of the PCB; if that stage fails, the pump does not receive a start command.
Before changing the PCB, check if the pump starts by bridging its direct power supply to the mains: if it spins, the problem is with the PCB, not with the pump.
- 04
The remote control or the programmable thermostat is not able to make the boiler respond, although the remote control itself is functioning.
Cause: Communication with the control unit goes through connectors on the PCB; a fault there renders the commands ineffective even if everything else is functioning properly.
Test the manual operation of the boiler, if it has one, to rule out that the fault is in the control or its cable before replacing the PCB.
Fault codes from Saunier Duval that this spare part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| F.63 | EEPROM fault: error in the memory/electronics of the main control board. | It is directly caused by the PCB itself (corrupt EEPROM memory or faulty electronics). Check: power reset; if it persists after ruling out connections, the PCB is the cause and usually requires replacement/recoding. NOTE: in older non-Condens ranges, this code has a different meaning (gas valve with delay), which is why the attribution to the PCB is firm only for the ThemaFast Condens range. |
| F.64 | Fault in the electronics / NTC: fault in the PCB electronics (associated with the NTC sensor circuit). | The PCB generates this fault when its own circuitry fails. Check: first rule out a short circuit in NTC sensors and harness; if the sensors are correct, the cause is the PCB. (The '/NTC' implies also checking the sensor before confirming the PCB.) |
| F.65 | Electronic temperature fault: the PCB has overheated or is faulty. | It is caused by the PCB itself when it detects excessive temperature in its electronics or an internal fault. Check: rule out external overheating/ventilation; if the ambient temperature is normal, the origin is the PCB. |
| F.42 | Coding resistor fault: short circuit/interruption of the power class or gas type coding resistor (on the PCB). | Very relevant when installing THIS spare PCB: after mounting/replacing the PCB, the coding resistor must be checked; a short circuit/interruption in it (on the PCB or heat exchanger harness) triggers the F.42. Verify the continuity of the resistor and correct coding after the PCB change. NOTE: the resistor may be located in the heat exchanger harness, not just on the PCB. |
| F.70 | Invalid product code (DSN): the boiler does not recognise its product identification after an electronics change. | Characteristic when replacing the PCB (display and/or PCB changed without recoding) or due to incorrect/missing power class coding resistor. Verify: recode the product (DSN) after installing this spare part and check the coding resistor. |
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 0020204482
- Catalogue reference
- 0020204482
- Brand
- Saunier Duval
- Type of part
- PCBs (control boards)
- Units in stock
- 2 units
- 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.
- Connectors identified on the PCB
- Pump, NGine, X1, X2, X9, X10, X30, X40
Frequently asked questions about the PCB 0020204482
What identified connectors does the PCB of the Themafast Condens F30 have?
Does this PCB work for any Themafast Condens F30 or are there several versions?
Spare parts related to Saunier Duval Themafast
