Main PCB Saunier Duval Thema NOx F25 B Ref. 0020184123

Saunier Duval boilers compatible with reference 0020184123

PCB with reference 0020184123. Six confirmed compatibilities: F 25 B and F 25 B/2.

Proven compatibility

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. 0020184123 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.

1. Find the reference printed on the installed part and check whether it matches the catalogue reference 0020184123. If it is not visible, do not identify the part by its shape alone.
2. Check the full boiler model on its data plate and look for it in the model associations on this page.
3. Compare the connections and physical body with the original part before installation.
4. If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.

Symptoms and faults that the PCB 0020184123 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 turns on, runs for a while, and then shuts off on its own without any apparent reason.

  Cause: A fault in the PCB can interrupt the supply to the gas valve or the fan while it is operating.

  Note when it turns off (start-up, domestic hot water, heating) and check it before replacing the PCB.

• 02

  The panel does not respond to any button presses, neither for temperature adjustment nor for reset.

  Cause: The circuit that manages the keyboard on the PCB is not reading the commands.

  Disconnect the power for thirty seconds and try again before assuming that the PCB is broken.

• 03

  The boiler operates normally but occasionally resets itself and returns to the initial screen.

  Cause: There may be a fault in the internal power supply that resets the microprocessor on the PCB.

  Check for any micro-cuts in the home's electrical network before replacing the PCB.

• 04

  A flame fault code appears even though the burner ignites properly to the eye.

  Cause: The PCB may be misinterpreting the ionization signal even though the flame is correct.

  Clean the flame detection electrode and check its cable before replacing the PCB.

Fault codes from Saunier Duval that this spare part resolves.

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 0020184123

Catalogue reference

0020184123

Brand

Saunier Duval

Type of part

PCBs (control boards)

Units in stock

2 units

Status

Refurbished

Warranty

1 year

Shipping

Delivery time shown at checkout

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.

Component code

0020184123

Manuals and technical documentation

Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.

• Saunier Duval F 25 B/2 Manual (PDF)Document © Saunier Duval, provided as a technical reference.