
Pressure switch Biasi Minox - Cod. C6065AH1020:2
When you open the hot water tap, the Manaut Minox pressure switch - :2 is responsible for monitoring the pressure and authorizing the operation of the boiler. If this part fails, you will notice that the boiler does not start or gets locked, even though the actual pressure is correct, and it may display the fault code 05E: Smoke pressure switch anomaly. It is compatible with boilers from the brand Manaut Minox, such as the Minox Eco 24E and Minox 3 32E models, among others. It is advisable to replace it when you experience the mentioned symptoms to restore the proper functioning of your system.
VAT included
Consult via WhatsAppBiasi boilers compatible with reference 500609
Pressure switch with reference 500609. Four confirmed compatibilities: Minox Eco 24E and Minox 3 32E.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Biasi Minox Eco 24E | Biasi Minox | Contrasted |
| Biasi Minox 3 32E | Biasi Minox | Contrasted |
| Biasi M95 | Biasi | Contrasted |
| Biasi 24CMB | Biasi | 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. 500609 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 500609. 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 pressure switch 500609 resolves.
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, the fan starts, but the burner does not light.
Cause: The air pressure switch does not close the contact because it does not detect the depression generated by the fan, and the control board does not authorize the gas.
Check that the fan is spinning at normal speed and without unusual noises before replacing the pressure switch.
- 02
The boiler locks up as soon as it starts, with an air pressure fault warning.
Cause: It is the safety feature that prevents the burner from igniting if the air and flue circuit is not in proper condition.
Check that the pressure intake tubes are not loose, cracked, or have accumulated condensation.
- 03
The fault appears intermittently: sometimes it ignites and sometimes it does not.
Cause: A pressure switch that begins to degrade can switch irregularly according to small pressure variations.
Note if the fault coincides with strong outside wind or with the condition of the intake filter before deciding on the replacement.
- 04
After cleaning the burner or the heat exchanger, the boiler started to show the same fault.
Cause: A recent internal handling may have accidentally moved or punctured the silicone tubes of the pressure switch.
Check the connections of the pressure pipes after any cleaning before requesting the new part.
Fault codes for Biasi that this part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| 05E | Flue pressure switch anomaly. | If the differential pressure switch (Huba 500609) does not switch when the fan starts, the PCB does not receive the draft test and locks the boiler; check with a differential manometer that the venturi reaches the minimum depression (e.g., MINOX ECO 24E ≥140 Pa) and verify the continuity of the pressure switch micro by applying real depression and checking tubes/venturi. |
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 pressure switch Biasi 500609
- Catalogue reference
- 500609
- Brand
- Biasi
- 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 code
- C6065AH1020:2
- Voltage/contact
- 1.5(0.5)µ, 250V~
- Set pressure
- P=0.89 mbar
- Maximum pressure
- max. 6 mbar
- CE code
- CE-0063AP3085/1
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Manual Biasi M95 (PDF)Document © Biasi, provided as a technical reference.








