Honeywell Pressure Switch C6065FH1383:2 (Azbil Corporation) Saunier Duval STY 300
Pressure switch with micro switch Honeywell C6065FH1383:2, manufactured by Azbil Corporation and made in China. It is a pressure switch: it changes the state of an electrical contact (NC/NO/C scheme) according to the detected pressure difference, with a set point of 0.72 mbar and a maximum switching at 6 mbar. Replacement requires first confirming the fault of the part through technical diagnosis, even when it fails and causes the boiler to lock out.
- Type of part
- Pressure switches
- Status
- Refurbished
- internal SKU
- PAASTY300
- Warranty
- 1 year
Compatible Saunier Duval boilers
Pressure switch. A proven compatibility: Duval STY 300.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Saunier Duval STY 300 | Saunier | 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
The part reference, model, and equipment revision must be verified against the manufacturer's documentation.
- 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 that require diagnosis in the pressure switch
The pressure switch controls the air or water pressure to authorize operation. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
The boiler tries to ignite, you hear the fan for a moment, and then it stops and remains locked.
Cause: The pressure switch does not detect the depression generated by the fan, and the boiler cuts off the gas for safety before igniting.
Check that the silicone tubes going from the fan to the pressure switch are not bent, loose, or cracked.
- 02
The lockout occurs right after the fan starts, before the flame appears.
Cause: The pressure switch must close its contact for the PCB to authorize the gas valve, and if it does not switch in time, the cycle is aborted.
Check that the fan spins freely and at a good speed; a loose one does not generate enough pressure.
- 03
The fault is particularly noticeable when it's windy or when the flue is dirty.
Cause: The pressure switch is sensitive to the actual pressure difference in the duct, and a restricted venting alters the reading even if the component is fine.
Check the flue terminal and the duct for any blockages, nests, or dirt before replacing the pressure switch.
- 04
The boiler lockout code indicates a pressure switch or ventilation fault.
Cause: It is the warning given by the boiler when it does not receive the expected signal from this component within the safety time.
Confirm in your model's manual that this code corresponds to the pressure switch, as some manufacturers use the same code for multiple causes.
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.
Saunier Duval pressure switch datasheet
- Uniclima internal SKU
- PAASTY300
- Brand
- Saunier Duval
- Type of part
- Pressure switches
- Units in stock
- 7 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- Return
- 14 days
Part data and available documentation
Contrast the label codes, PCB, and revision with the installed part; they are not necessarily equivalent references.
- Actual manufacturer
- Azbil Corporation (trademark Honeywell), Made in China
- Component code
- C6065FH1383:2
- Contact electric charge
- 1.5(0.5)A / 250V~
- Contact diagram
- NC/NO/C
- Set pressure
- P=0.72 mbar
- Maximum allowable pressure
- max. 6 mbar
- Date/lot code
- 1612F
- CE code / notified body
- CE-0063AP3085/1
- Internal microswitch (reference)
- V-561OR-Q4:1
- Internal microswitch (load)
- 1.5A~ 300VAC
Frequently asked questions about the pressure switch
Is this Honeywell C6065FH1383:2 pressure switch suitable for the Saunier Duval STY 300?
Who manufactures the pressure switch C6065FH1383:2 for the Saunier Duval STY 300?
What fault does this pressure switch cause in the Saunier Duval STY 300 when it fails?
At what pressure does the pressure switch of the Saunier Duval STY 300 switch?
