Huba Control Air Pressure Switch for Baxi Roca Laura Plus 28/28F - Ref. 122460020
Huba Control air pressure switch (transducer), code 401.93000, for Baxi Roca boilers from the Laura range. It measures the air pressure generated by the fan and sends an analog signal from 0.5 to 4.5 V, proportional to the pressure detected between 0 and 3 mbar, to the boiler's PCB. It is replaced when the pressure signal fails and the boiler does not complete the ignition cycle.
VAT included
Consult via WhatsAppBaxi Roca boilers compatible with reference 122460020
Pressure switch with reference 122460020. Nine verified compatibilities: Laura 20 AF and Laura 20 F.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Baxi Roca Laura 20 AF | Baxi Roca Laura | Contrasted |
| Baxi Roca Laura 20 F | Baxi Roca Laura | Contrasted |
| Baxi Roca Laura 20/20 F | Baxi Roca Laura | Contrasted |
| Baxi Roca Laura 20/20 T | Baxi Roca Laura | Contrasted |
| Baxi Roca Laura 30 AF | Baxi Roca Laura | Contrasted |
| Baxi Roca Laura 30/30 F | Baxi Roca Laura | Contrasted |
| Baxi Roca Laura 35 AF | Baxi Roca Laura | Contrasted |
| Baxi Roca Laura 35/35 F | Baxi Roca Laura | Contrasted |
| Baxi Roca Laura Plus 28/28F | Baxi Roca Laura | 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. 122460020 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 122460020. 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 122460020 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 stops after a few seconds and displays a fault.
Cause: The pressure switch is not sending the correct signal to the PCB, which does not validate the ventilation cycle.
Check that the pressure switch connector is properly fitted and free of corrosion before considering it faulty.
- 02
The display shows a fault warning for the air pressure switch or ventilation.
Cause: The control unit detects that the signal is not within the expected range and aborts the ignition for safety reasons.
Check that the silicone tubes leading the pressure to the pressure switch are not broken, bent, or disconnected.
- 03
The fan is working properly, but the burner does not ignite.
Cause: If the pressure switch does not translate the pressure correctly, the boiler does not allow the gas to pass.
Clean the air intake filter and the exhaust duct; a blockage can affect the reading.
- 04
The fault occurs especially with strong winds or bad weather.
Cause: External pressure variations can affect the reading of the pressure switch.
Note if the fault coincides with windy days before deciding that the pressure switch is broken.
Fault codes for Baxi Roca that this part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| 19 | Pressure above zero in the pressure switch or flue thermostat | The air pressure switch remains closed before start-up (stuck or with inverted/blocked tubes), so the PCB detects pressure '>0'. Verify by measuring continuity in the pressure switch without demand and checking/aspirating through the venturi tubes to see if it changes state. |
| 20 | Insufficient pressure in the pressure switch or flue thermostat | The air pressure switch does not close during demand (lack of draft/pressure, tubes with water, or defect in the pressure switch itself). Verify that the fan starts and measure the continuity of the pressure switch by applying a vacuum to the tube towards the venturi; check tubes and crossed connections. |
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 the Baxi Roca 122460020 pressure switch
- Catalogue reference
- 122460020
- Brand
- Baxi Roca
- Type of part
- Pressure switches
- Units in stock
- 1 unit
- 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
- Huba Control
- Manufacturer code
- 401.93000
- Pressure range
- 0...+3 mbar
- Maximum pressure
- 25 mbar
- Power supply
- 12VDC (10.4-18VDC)
- Output
- 0.5-4.5V RL>15kOhm
- There are no documented equivalents for this part.
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Baxi Roca Laura 20/20 F Manual (PDF)Document © Baxi Roca, provided as a technical reference.
Frequently asked questions about the pressure switch 122460020
Is this Huba Control pressure switch compatible with a Baxi Roca Laura Plus 28/28F?
Which manufacturer makes this air pressure switch for the Laura Plus 28/28F?
What is the voltage range for the power supply of this pressure switch?
What fault indicates that the air pressure switch needs to be replaced in the Laura Plus 28/28F?
How do I confirm that this is the pressure switch for my Baxi Roca Laura Plus 28/28F?
Spare parts related to Baxi Roca Laura
