Honeywell PCB Ferroli Domina F24 Ref. 39807690
Control PCB for Ferroli boilers from the Domina, Domitop, and Domiproject ranges. Manufactured by Honeywell, it includes the control circuit and the ignition management relay for the boiler. It is replaced when the boiler does not ignite, locks without apparent cause, or the control module fails.
Ferroli boilers compatible with reference 39807690
PCB with reference 39807690. Five confirmed compatibilities: DOMINA C24 E and DOMINA F24 E.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Ferroli DOMINA C24 E | DOMINA | Contrasted |
| Ferroli DOMINA F24 E | DOMINA | Contrasted |
| Ferroli OPTIMAX 25 C | DOMICOMPACT / OPTIMAX | Contrasted |
| Ferroli FERELLA GOLD F24 MEL | FERELLA | Contrasted |
| Ferroli COMBI F24 | COMBI | 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 ref. 39807690 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 39807690. 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 39807690 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 or takes a long time to start.
Cause: If the ignition management relay on the PCB does not switch in time, the ignition command arrives late or does not arrive at all.
Reset the boiler and check if the delay occurs with each attempt before replacing the PCB.
- 02
It repeatedly locks out without apparent cause, with no gas supply issues or flue failure.
Cause: An intermittent fault in the control circuit can cause random lockouts even if the rest of the installation is correct.
Note at what point in the cycle it locks out and if the fault code is always the same; this helps to distinguish the PCB from another component.
- 03
The boiler does not respond to any commands.
Cause: A fault in the control module leaves the equipment without electronic management.
Check that power is reaching the PCB (fuse, power connector) before declaring it faulty.
Fault codes for Ferroli that this part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| F36 | Main PCB fault | Main PCB fault, often due to moisture or damage to the board itself. Check voltages and connectors and ensure there is no water on the PCB; if the issue persists, replace the board. |
| F22 | Microprocessor fault | Microprocessor fault on the control board. Cut and restore power; if it persists, check/replace the main board (CVBC/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 Ferroli PCB 39807690
- Catalogue reference
- 39807690
- Brand
- Ferroli
- Type of part
- PCBs (control boards)
- Units in stock
- 0 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.
- Ignition block code
- MF03F V23
- Relay code
- LZL-24H
- PCB layout code
- 45.006.399-001 REV.G
- Batch code
- 0170
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Ferroli DOMINA F24 E Manual (PDF)Document © Ferroli, provided as a technical reference.
Frequently asked questions about the PCB 39807690
For which models is the Honeywell Ferroli Domina F24 PCB (Ref. 39807690) compatible?
What is the reference for the PCB for the Ferroli Domina F24?
What faults can be resolved by replacing this PCB in the Ferella GOLD F24 MEL?
How many models are compatible with this PCB?
What fault codes are documented for this PCB?
What is the reference for this PCB?
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