Air Pressure Switch Baxi Roca RS 20/20 T Dungs LGW 1.5 A1 Ref. 122160280 (Art.-Nr. 226 246)
The Roca Baxi air pressure switch RS 20/20 Dungs LGW 1.5 A1 controls the pressure in the boiler and allows it to operate. If it fails, the boiler may not start or may lock out even if the actual pressure is adequate, and fault code 03: Lack of pressure may appear. This pressure switch is compatible with models such as R 20/20 F, R 20/20 TF, RS 20/20 F, RS 20/20 TF, and RS 20/20 T, among others. A technician must confirm through diagnosis whether it needs to be replaced when these fault symptoms are detected.
- Type of part
- Pressure switches
- Status
- Refurbished
- Catalogue reference
- 122160280
- Warranty
- 1 year
Baxi Roca boilers compatible with reference 122160280
Pressure switch with reference 122160280. Five confirmed compatibilities: R 20/20 F and R 20/20 TF.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Baxi Roca R 20/20 F | Baxi Roca R - RS 20/20 | Contrasted |
| Baxi Roca R 20/20 TF | Baxi Roca R - RS 20/20 | Contrasted |
| Baxi Roca RS 20/20 F | Baxi Roca R - RS 20/20 | Contrasted |
| Baxi Roca RS 20/20 TF | Baxi Roca R - RS 20/20 | Contrasted |
| Baxi Roca RS 20/20 T | Baxi Roca R - RS 20/20 | 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 the reference 122160280 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 122160280. 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 that require diagnosis in the pressure switch 122160280
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 does not ignite and locks out showing a fault with the air or flue pressure switch.
Cause: The pressure switch does not receive sufficient pressure from the fan and does not allow ignition for safety reasons.
Check that the extractor fan turbine is not dirty or worn, as it would lose airflow even if it spins normally.
- 02
The extractor works but ignition does not occur.
Cause: The pressure switch does not provide the contact signal even though the fan is generating pressure, usually due to an internal fault of the component.
If possible, measure with a multimeter that the pressure switch activates the contact when the fan is running.
- 03
The blockages come and go, related to the pressure generated by the fan.
Cause: A loose connection or a partially blocked pipe causes unstable pressure readings that the pressure switch interprets as a fault.
Check that the connection pipes between the pressure switch and the fan are properly fitted and free of condensation or dirt.
Fault codes Baxi Roca that require diagnosis
| Code | Fault | Technical checks |
|---|---|---|
| 03 | Lack of pressure | The boiler indicates that there is a lack of pressure in the heating circuit. This may be due to a leak in the system or that it has not been filled properly. Check the pressure gauge and ensure that the pressure is within the recommended levels. |
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 Baxi Roca 122160280
- Catalogue reference
- 122160280
- Uniclima internal SKU
- PCRRS2020
- Brand
- Baxi Roca
- 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.
- Setpoint
- 1.5/1.2 mbar
- Maximum pressure (pmax)
- 100 mbar
- Voltage/current
- (AC) 50-60Hz, 2.5A, 250V
- CE code (ID.No.)
- CE-0085AC0673
- Manufacturer code (Art.-Nr.)
- 226 246
- Date/batch
- 15TBS 02/99
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Baxi Roca RS 20/20 F manual (PDF) Document © Baxi Roca, provided as a technical reference.
Frequently asked questions about the pressure switch 122160280
Does the pressure switch of the Baxi RS 20/20 T come from Dungs or Huba Control, as the catalog mentioned before?
Does this part fit my Baxi Roca R-20/20 F?
What is the setting of the Dungs LGW 1.5 A1 pressure switch for the RS 20/20 T?
How can I check that my pressure switch is this Dungs LGW 1.5 A1 and not another similar one?
