Honeywell PCB for MF-20 boilers
If your boiler does not start, locks out, or exhibits erratic operation, you may need the Honeywell PCB for MF-20 Boilers, reference S1047000. This component controls the ignition, burner modulation, pump, and safety features of the boiler. A lack of response from the boiler can be a clear sign of a fault in this board. It is compatible with MF-20 models, including variants such as C, CE GLP, and E NAT, among others. It is recommended to replace it in case of a fault to restore the operation of the boiler.
VAT included
Consult via WhatsAppCompatible Fagor boilers
PCB. Nine verified compatibilities: C and CE LPG.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Fagor C | MF-20 | Contrasted |
| Fagor CE LPG | MF-20 | Contrasted |
| Fagor CE N | MF-20 | Contrasted |
| Fagor E LPG | MF-20 | Contrasted |
| Fagor E NAT | MF-20 | Contrasted |
| Fagor ECE LPG | MF-20 | Contrasted |
| Fagor ECE N | MF-20 | Contrasted |
| Fagor GLP | MF-20 | Contrasted |
| Fagor N | MF-20 | 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 it 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 —. If it is not visible, do not identify the part by 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 (control board) 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 shows no signs of life: no lights, no display, and no attempt to start.
Cause: The PCB is not supplying power to the rest of the boiler, so nothing else can function.
First, check the fuse on the PCB (marked 2AT) before considering it faulty.
- 02
The burner makes an attempt to ignite and the boiler shuts off after a few seconds.
Cause: The PCB receives an abnormal signal from another component and interrupts the cycle for safety.
Check that connectors X1 to X8 are properly seated and free of corrosion before replacing the PCB.
- 03
The thermostat or the control does not manage to start the boiler even though it requests heating.
Cause: An internal fault in the microprocessor of the PCB prevents it from processing the ignition command.
Disconnect the boiler from the 230V power supply for a couple of minutes and then reconnect it to rule out a temporary hang-up.
- 04
An error code appears on the display that does not clear when resetting the boiler.
Cause: The PCB keeps the lock because it continues to detect the same anomaly in the circuit it monitors.
Note the exact code and first check the component it points to before blaming 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.
Fiche of the Fagor PCB.
- Brand
- Fagor
- 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.
- Manufacturer
- Honeywell
- Voltage
- 230V
- Frequency
- 50Hz
- Fuse (marking next to the fuse holder)
- 2AT
Frequently asked questions about the PCB (control board)
Does this Honeywell PCB work for all nine versions of the MF-20 (C, CE GLP, CE N, E GLP, E NAT, ECE GLP, ECE N, GLP, and N)?
Does Honeywell manufacture the PCB for the MF-20 even though the catalog sells it for Fagor boilers?
What voltage does the PCB of the MF-20 operate at?
How many connectors does the PCB of the MF-20 have?
Spare parts related to Fagor MF-20
