Name: Roca Air Pressure Switch RS 20 20 F Ref. 122160820
Brand: Baxi Roca
SKU: PCRRS2020F
Price: 20 EUR
Availability: OutOfStock

Question 1

How do I know if this pressure switch is for my boiler?

Accepted Answer

Verify the reference 122160820 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part. It is a Huba piece.

Question 2

What is it used for?

Accepted Answer

The pressure switch controls the pressure/draught (of air in sealed systems) or water to authorize operation.

Question 3

Is the boiler not starting or showing a draught fault?

Accepted Answer

If the fan spins but does not ignite, check the pressure tubes (loose/blocked), the diaphragm, and the fan.

Question 4

Which models is it suitable for?

Accepted Answer

Part shared by various models (see Compatibility). If your model does not appear, send us a photo of the marking and we will confirm it.

Question 5

Installation and recommendations

Accepted Answer

Check the tightness of the pressure pipes and the switching of the contact.

Question 6

What does refurbished mean and what coverage does it have?

Accepted Answer

Part removed from a boiler out of service, inspected and tested. Includes 1-year warranty and 14-day return policy. Delivery within 2–4 working days in the EU.

Question 7

What does the 60-80-90 code mean on Baxi Roca?

Accepted Answer

Insufficient pressure in the pressure switch or flue thermostat. The air pressure switch does not close at start-up because it does not reach the pressure differential; check continuity at its terminals during start-up and inspect tubes/venturi and ensure the fan generates the vacuum.

Question 8

What does the code 40-50-80-90 mean in Baxi Roca?

Accepted Answer

Pressure above zero in the pressure switch or flue thermostat. The pressure switch remains closed when it should be open before ignition; check that it opens by applying slight overpressure/underpressure to its connections and that the tubes are not reversed or obstructed.

Question 9

What does fault code 19 mean in Baxi Roca?

Accepted Answer

Waiting for the pressure switch to open. After stopping, the air pressure switch does not reopen (detects pressure >0) and prevents the cycle; check that the contact switches to open when the fan stops and inspect the venturi/pipes.

Question 10

What does fault code 20 mean in Baxi Roca?

Accepted Answer

Pressure switch closing delay. At startup, the air pressure switch does not close due to a lack of depression indicated to the diaphragm; measure continuity during the ignition attempt and check the fan, venturi, and pressure switch tubes.

Code	What does it mean?	Cause and diagnosis (this part)
60-80-90	Insufficient pressure in the pressure switch or flue thermostat.	The air pressure switch does not close at the start because it does not reach the pressure differential; check continuity at its terminals during startup and inspect the tubes/venturi and ensure the fan generates the vacuum.
40-50-80-90	Pressure above zero in the pressure switch or flue thermostat.	The pressure switch remains closed when it should be open before ignition; check that it opens by applying slight overpressure/underpressure to its connections and ensure the tubes are not reversed or obstructed.
19	Waiting for the pressure switch to open.	After shutdown, the air pressure switch does not reopen (detects pressure >0) and prevents the cycle; check that the contact switches to open when the fan stops and inspect the venturi/pipes.
20	Pressure switch closing delay.	At startup, the air pressure switch does not close due to a lack of depression indicated to the diaphragm; measure continuity during the ignition attempt and check the fan, venturi, and pressure switch tubes.

Roca Air Pressure Switch RS 20 20 F Ref. 122160820

Key Data

Baxi Roca RS 20/20

Baxi Roca R 20/20

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