SIT Controls BIC-328 PCB for Fagor FC-24/24 N boiler - Ref. MUC080073
Electronic control board from the manufacturer SIT Controls, model BIC-328 (article number SIT 116422), installed in Fagor boilers FC-24/24 N, FC-24/28 1N, and FC-32/35 N with spare part reference Fagor MUC080073. It includes a fuse F1 2AT. It is replaced when the electronic control of the boiler fails and the symptoms indicate the board.
VAT included
Consult via WhatsAppFagor boilers compatible with reference MUC080073
PCB with reference MUC080073. Two confirmed compatibilities: FC 24/24 N and FC 32/35 N.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Fagor FC 24/24 N | Fagor NATUR FC | Contrasted |
| Fagor FC 32/35 N | Fagor NATUR FC | 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 MUC080073 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 MUC080073. 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 MUC080073 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, there are no lights lit.
Cause: The F1 fuse on the PCB may be blown, preventing power from reaching the control.
Check the fuse F1 before replacing the entire PCB.
- 02
The boiler locks with a fault code when trying to turn it on.
Cause: The control electronics stop the ignition upon detecting a safety issue.
Note the exact code: some codes indicate problems with the pressure switch or the flue sensor, not with the PCB.
- 03
The boiler control does not respond to the presses.
Cause: The microcontroller on the PCB may have stopped receiving commands from the remote control.
Try to directly operate the controls on the panel to see if it responds.
- 04
The boiler turns on and off by itself without the thermostat being touched.
Cause: A relay on the PCB may be intermittently failing, cutting the cycle for no apparent reason.
Check if the fault occurs at the same time every day or with changes in the ambient temperature.
Fault codes for Fagor that this part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| E3 | Defective control board | The main PCB (control board) is faulty or not receiving power; check the voltage and input wiring, and if the issue persists, test/replace the PCB. |
| E6 | Detection of a parasitic flame | It may be due to a leak or erroneous ionisation reading on the PCB itself (µA/ground input) or damaged electronics; check the electrode/ground and ionisation current, and if everything is correct and the fault persists, replace the PCB. |
| E45 | Factory setting | Parameter/memory error of the control; reconfigure parameters and perform a reset. If it reappears, the memory/PCB is damaged and the PCB must be replaced. |
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 MUC080073 PCB.
- Catalogue reference
- MUC080073
- Brand
- Fagor
- Type of part
- PCBs (control boards)
- Units in stock
- 3 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
- SIT Controls (SIT Group)
- SIT Controls model
- BIC-328 (printed as 'Type BC-328' on the label; matches the reading BIC-328)
- Fuse
- F1 2AT
- SIT internal production code
- 019.040.026
- Secondary code on sticker
- 125546 AC
- Module code
- BIC-333
- Batch / date
- I22548 AC
- SIT article number
- 116422
- Commercial reference Fagor (SKU)
- MUC080073
- The PCB shows two different model codes ('BIC-328', confirmed by sources, and 'BIC-333' as a separate module code); do not confuse one with the other when requesting the spare part.
Frequently asked questions about the PCB MUC080073
Does this PCB BIC-328 work for a Fagor FC-24/28 1N boiler?
Who manufactures the MUC080073 PCB of the Fagor FC-24 N?
What fuse does the BIC-328 PCB use and what is its amperage?
When should this PCB be replaced in a Fagor FC-32/35 N boiler?
How can I check that my PCB is the BIC-328 and not another SIT reference?
Spare parts related to Fagor NATUR FC
