Ferroli Domicompact / Divatech Air Pressure Switch Honeywell C4065 Ref. I39817510
Honeywell air pressure switch, model C4065FH1131:2, for Ferroli boilers from the Domi Compact, Domiproject, Divatech, Divatop H, and New Elite ranges. It switches at a pressure of 1.10 mbar, with a maximum supported pressure of 6 mbar. It is replaced when the boiler does not ignite, locks with an air or combustion fault, or the fan runs without the burner starting.
Spare parts related to Ferroli Ferroli Domicompact
Ferroli boilers compatible with reference I39817510
Pressure switch with reference I39817510. Six confirmed compatibilities with two independent sources: Domicompact F24 and Domicompact F24E. Verify the printed reference on your part before purchasing.
Compatibility confirmed
| Boiler model | Family | Verification |
|---|---|---|
| Ferroli Domicompact F24 | Ferroli Domicompact | Confirmed · 2 sources |
| Ferroli Domicompact F24E | Ferroli Domicompact | Confirmed · 2 sources |
| Ferroli Domicompact F30 | Ferroli Domicompact | Confirmed · 2 sources |
| Ferroli Domicompact C24 | Ferroli Domicompact | Confirmed · 2 sources |
| Ferroli Domiproject F24 | Ferroli Domiproject | Confirmed · 2 sources |
| Ferroli Domiproject F32 | Ferroli Domiproject | Confirmed · 2 sources |
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. I39817510 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.
- Locate the reference printed on the body of the pressure switch you have installed: it should indicate I39817510.
- Check your boiler model on the nameplate and look for it in the list of compatible models on this page.
- Compare the connections and the body with the original part before installing.
- If you have any doubts, send us a photo of the screen printing via WhatsApp and we'll confirm it for you before you purchase.
Symptoms and faults resolved by pressure switch I39817510
The pressure switch controls the air or water pressure to authorize operation. These are the typical symptoms and what to do:
The boiler fan operates normally, but the burner never ignites.
Cause: Without the pressure switch contact closure, the control unit does not allow gas flow, even if the extractor is generating more than enough pressure.
Check that the electrical connector of the pressure switch is properly connected to the PCB and that there are no loose wires before replacing it.
The boiler locks out with an air or combustion fault warning as soon as you try to turn it on.
Cause: The pressure switch can remain permanently open if the internal microswitch has degraded with use, and the boiler interprets that there is no draft.
Check that the silicone tube is not disconnected from its connection on the flue duct, as this is the most common cause before the part itself fails.
It doesn't turn on and no clear fault code appears on the display.
Cause: Some models only display the generic safety lockout without specifying that the origin is in the air circuit.
Check that the flue is not blocked by nests, ice, or dirt at the outlet before replacing the pressure switch.
The fault appears only during the first startups of the day, when cold.
Cause: The condensation accumulated in the pressure intake tubes can have a greater impact when the boiler has been off for hours.
Check in the morning, before the first start-up, if there is water accumulated in the silicone tubes of the pressure switch.
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.
Datasheet for Ferroli pressure switch I39817510
- OEM reference
- I39817510
- Brand
- Ferroli
- Type of part
- Pressure switches
- Units in stock
- 4 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.
- Model
- C4065FH1131:2
label - Contacts
- 1.5(0.5)µ 250V~ (character printed like this on the label, possible A for amperes)
label - Switching pressure
- P=1.10 mbar
label - Maximum pressure
- max. 6 mbar
label - Date/lot code
- 0511F
label - CE Certificate
- CE-0063AP3085/1
label - Place of manufacture
- Made in China
label - Micro switch model
- V-562QR-047
label - Current and voltage of the microswitch
- 1.8A-250VAC
label - Micro switch code
- VI70
label - Date/batch of the microswitch
- 0500F
label
- The micro switch code has been read as 'VI70' on this unit; in another photo of the same part, it was read as 'YI70'. It could be the same data poorly legible due to the angle of the photo; check the marking on your pressure switch.
- The character printed on the label next to the contacts (1.5(0.5)µ 250V~) could correspond to an A for amperes that is poorly legible; it is transcribed as it appears.