Name: Baxi Roca RS 20 20 F Electronic Control PCB Ref. 122123200
Brand: Baxi Roca
SKU: MECRRS2020F
Price: 80 EUR
Availability: InStock

Question 1

How do I know if this PCB is for my boiler?

Accepted Answer

Verify the reference 122123200 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part.

Question 2

What is it used for?

Accepted Answer

The PCB controls the ignition, modulation, sensor readings, and safety features of the boiler.

Question 3

Is the boiler not igniting, locking out, or is the control board unresponsive?

Accepted Answer

After ruling out mains voltage, fuse, and connectors, a damaged PCB causes lockouts, blackouts, or erratic display. Repair the external cause before installing the new one.

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

After installation, a technician must adjust the service parameters (type of gas, power settings) and check combustion and safety features.

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 code 60-90 mean in Baxi Roca?

Accepted Answer

The flame relay is not working properly or is stuck. The flame relay is integrated into the PCB: if it gets stuck or does not switch, the PCB does not validate the ionisation and locks out. Check the order/status of the relay on the PCB and the ionisation microamps; if there is correct ionisation and the relay does not change, the PCB is faulty.

Question 8

What does the code 50-70-90 mean in Baxi Roca?

Accepted Answer

Fault in the safety relay, it does not close after demand. The safety relay on the PCB does not close its contacts when the electronics command it. Check the signal to the coil and contact continuity; if it receives the command and does not close (or is carbonised), replace the control board.

Question 9

What does the fault code 40-60-70-90 mean in Baxi Roca?

Accepted Answer

Safety relay, very long ignition timing. The ignition timing management on the PCB fails because the safety relay (on the PCB) does not act in time. Check gas and spark; if everything is correct and the relay on the PCB takes time to act or does not switch, the cause is the PCB itself.

Code	What does it mean?	Cause and diagnosis (this part)
60-90	The flame relay is not working properly or is stuck.	The flame relay is integrated into the PCB: if it gets stuck or does not switch, the PCB does not validate the ionisation and locks out. Check the order/status of the relay on the PCB and the ionisation microamps; if there is correct ionisation and the relay does not change, the PCB is faulty.
50-70-90	Fault in the safety relay, does not close after demand.	The safety relay on the PCB does not close its contacts when the electronics command it. Check the signal to the coil and contact continuity; if it receives the command and does not close (or is carbonised), replace the PCB/control board.
40-60-70-90	Safety relay, very long ignition timing.	The management of ignition times on the PCB fails because the safety relay (on the PCB) does not act in time. Check gas and spark; if everything is correct and the relay on the PCB delays in acting or does not switch, the cause is the PCB itself.

Baxi Roca RS 20 20 F Electronic Control PCB Ref. 122123200

Key Data

RS

Spare Parts Related Boiler RS 20 20 F