Fagor MF-12 N PCB Honeywell Ref. MU0104200
Control PCB for Fagor MF-12 C, MF-12 GLP, and MF-12 N boilers. The component identified on the label is a Honeywell module with code W4115B-1317, powered at 230V 50Hz and protected with a 2A delayed fuse (2AT). It is replaced when the boiler does not ignite, does not respond to controls, or the electronic part stops functioning.
VAT included
Consult via WhatsAppFagor boilers compatible with reference MU0104200
PCB with reference MU0104200. Three confirmed compatibilities: C and LPG.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Fagor C | MF-12 | Contrasted |
| Fagor GLP | MF-12 | Contrasted |
| Fagor N | MF-12 | 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 part number MU0104200 is the one 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 MU0104200. 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 MU0104200 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 ignite and the display remains off.
Cause: The internal power supply of the PCB does not power the control circuits.
Measure the fuse with a multimeter and the mains voltage before replacing the PCB.
- 02
The remote control or the room thermostat does not do anything.
Cause: The PCB does not process or receive the signal from the remote control.
Force the built-in thermostat of the boiler to rule out an external wiring issue before blaming the PCB.
- 03
The screen and the indicators suddenly turn off for no apparent reason.
Cause: Internal power cut on the PCB, typical of a blown fuse or a power supply failure.
Measure if 230V is reaching the input of the PCB before considering it faulty.
- 04
The boiler ignites sometimes and sometimes it doesn't, without a clear pattern.
Cause: A degraded component or a loose solder joint on the PCB causes intermittent behavior.
Note under what conditions it fails (cold, hot, after how much time) to confirm that the pattern points to the PCB.
Fault codes for Fagor that this part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| F5 | PCB fault (internal fault of the electronic circuit). | The control PCB fails due to damage in components/power supplies or software protection; the boiler locks out. Check by measuring voltages 230V→low on the PCB, connectors, and relays, and ideally with a cross-test by temporarily replacing the board MU0104200. |
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 Fagor MU0104200 PCB.
- Catalogue reference
- MU0104200
- Brand
- Fagor
- Type of part
- PCBs (control boards)
- Units in stock
- 6 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.
- Component manufacturer
- Honeywell
- PCB code
- W4115B-1317
- Power supply
- 230V 50Hz
- Fuse
- 2AT (2A delayed)
Frequently asked questions about the PCB MU0104200
Which manufacturer has the MU0104200 PCB of the Fagor MF-12 N?
Does this PCB MU0104200 work for the Fagor MF-12 GLP?
What fuse does the Honeywell W4115B-1317 PCB use?
What voltage does the MU0104200 PCB of the Fagor MF-12 N operate at?
When should the PCB of the Fagor MF-12 N be replaced?
