Pressure gauge Baxi Roca RS 20/20 F
The Roca RS 20/20 F manometer, reference 122152600, is an instrument that measures the pressure of the boiler circuit. Its scale ranges from 1 to 4 bar, with a green band around 2 bar and a red band in the 3-4 bar zone. When it fails, you may notice incorrect readings, which can cause the boiler to lock out due to a false lack of pressure or not regulate the temperature properly. This model is compatible with the Roca RS 20/20 F, RS 20/20 T, and RS 20/20 boilers, among others. A technician must confirm through diagnosis whether it needs to be replaced when the readings are unreliable or when there are visible damages.
- Type of part
- Pressure gauges & aquastats
- Status
- Refurbished
- Catalogue reference
- 122155210
- Warranty
- 1 year
Baxi Roca boilers compatible with reference 122155210
Pressure gauge with reference 122155210. Three confirmed compatibilities: RS 20/20 F and RS 20/20 T.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Baxi Roca RS 20/20 F | Baxi Roca RS 20/20 | Contrasted |
| Baxi Roca RS 20/20 T | Baxi Roca RS 20/20 | Contrasted |
| Baxi Roca RS 20/20 | Baxi Roca 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 ref. 122155210 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 122155210. 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 on the manometer 122155210
The manometer shows the pressure of the boiler circuit. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
The needle does not move and remains fixed, even when you change the pressure in the circuit.
Cause: The internal mechanism of the pressure gauge has become blocked over time, especially if it has been in contact with dirt or limescale in the water.
Gently tap the glass while watching the needle and bleed some pressure at the same time: if it does not react to either, the pressure gauge is faulty.
- 02
The pressure gauge always reads outside the 1-4 bar range, either very low or very high, not matching what the boiler is doing.
Cause: The mechanism has lost its calibration or has a damaged component, so it does not accurately reflect the actual pressure.
Check if the boiler alerts for low or high pressure during its normal operation; if there are no alerts and everything is functioning well, the pressure gauge reading is not reliable.
- 03
It is decided to replace the pressure gauge during a service, even though it has not shown clear symptoms.
Cause: A pressure gauge that has been in use for many years can fail without warning, and checking it preventively avoids problems in the future.
Before replacing it as a precaution, compare the pressure gauge reading several times with the actual behavior of the filling and bleeding system.
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 Baxi Roca pressure gauge 122155210
- Catalogue reference
- 122155210
- Uniclima internal SKU
- MAPRS2020F
- Brand
- Baxi Roca
- Type of part
- Pressure gauges & aquastats
- Units in stock
- 3 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.
- Scale
- 1-4 bar, with the green band towards 2 bar and the red band in the 3-4 bar zone.
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 gauge 122155210
Does this pressure gauge from the Baxi Roca RS 20/20 F also work for the RS 20/20 without F?
When should the pressure gauge of the Baxi Roca RS 20/20 F be replaced?
What pressure scale does the manometer of the Baxi Roca RS 20/20 F indicate?
