Saunier Duval Combitek C 23 Electronic Module Ref. 0310118200A1
The control PCB of the Saunier Duval Combitek C 23 Electronic Module manages the ignition, burner modulation, pump, and safety features of the boiler. If it experiences faults, the boiler may not start, become locked, or operate erratically. This module is compatible with boilers from the Combitek range, such as the Combitek C23 and the Combitek C23E, among others. It should be replaced when these malfunction symptoms are detected.
VAT included
Consult via WhatsAppSaunier Duval boilers compatible with reference 057445
PCB with reference 057445. Two confirmed compatibilities: Combitek C23 and Combitek C23E.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Saunier Duval Combitek C23 | Combitek | Contrasted |
| Saunier Duval Combitek C23E | Combitek | 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 ref. 057445 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 057445. 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 057445 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 works for heating but does not provide hot water, or vice versa.
Cause: The PCB distributes the commands among the circuits; if one fails, that service stops working even though the others remain operational.
Confirm which function is failing exactly before replacing the PCB: if only one is failing, first rule out the three-way valve or the sensor of that circuit.
- 02
The boiler shuts down during operation and does not restart until it is unplugged.
Cause: An internal fault in the PCB can lock it, and it can only be resolved by completely cutting off the power supply.
Try a complete reset by cutting the main power for a couple of minutes and observe if the fault takes time to reoccur or if it is immediate.
- 03
The display shows strange or incomplete symbols, not a recognizable fault code.
Cause: When the control electronics fail, it can affect the display of information on the screen.
Note exactly what is displayed on the screen and compare it with the manual: a recognizable symbol is a real code, while an illegible one points more towards the PCB.
- 04
The boiler has been experiencing intermittent faults that come and go on their own.
Cause: The solder joints or aged components of an old PCB can fail intermittently before completely breaking down.
Gently tap the side of the unit while it is running: if the fault appears or disappears with the vibration, it is an indication of a poor connection on the PCB.
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 057445 PCB.
- Catalogue reference
- 057445
- Brand
- Saunier Duval
- Type of part
- PCBs (control boards)
- Units in stock
- 5 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.
- Silkscreened code on the PCB
- 0310118200A1
- Relay
- 23S35-A, 24V 50/60Hz
- Main chip marking
- DIFFLS / HCTA U7FD / C9: A333
Frequently asked questions about the PCB 057445
Why did the catalog have the reference 057445 instead of 0310118200A1 for this module?
What relay does the module of the Saunier Duval Combitek C 23 use?
Does this module work for the Combitek F 23 E in addition to the C 23?
What chip is mounted on this PCB of the Combitek C 23?
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