Baxi Roca PCB Laura Plus Ref. 122420390
RefurbishedBaxi RocaPCBs (control boards)

Baxi Roca PCB Laura Plus Ref. 122420390

60 €VAT includedIn stock · 1 unit

PCB (control board): refurbished spare part that controls the ignition, modulation, and safety features of the boiler. Useful if the boiler does not ignite, locks up, or the display is unresponsive. Compatible with Laura Plus 28/28, Laura Plus 28/28F (ref. 122420390). Includes a one-year warranty and delivery within 2–4 working days in the EU.

1
Consult via WhatsApp
Delivery in 2–4 working days
1-year warranty
14-day return
Technical support

Key Data

Reference
122420390
Brand
Baxi Roca
Type of part
PCBs (control boards)
Available units
1 unit in stock
Status
Refurbished
Warranty
1 year
Shipping
2–4 working days (EU)
Return
14 days

The same part (ref. 122420390) equips these models. Verified compatibility; check the reference before purchasing.

Laura Plus 28/28

  • Laura Plus 28/28
  • Laura Plus 28/28F

Fault codes related to this part (not the entire boiler). They usually have more possible causes: first rule out electrodes, wiring/connections, and gas supply. Verified with ≥3 sources.

CodeWhat does it mean?Cause and diagnosis (this part)
27Modulating valve poorly connected or fault in the control board.The PCB (control board) governs the modulating valve; if its output/driver or supervision fails, the boiler interprets the valve as poorly connected and triggers fault code 27. Verify by measuring at the control board connector the power supply and modulation signal to the valve with wiring and coil checked; if it is missing or abnormal, the PCB is faulty.
How do I know if this PCB is for my boiler?
Verify the reference 122420390 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part.
What is it used for?
The PCB controls the ignition, modulation, sensor readings, and safety features of the boiler.
Is the boiler not igniting, locking out, or is the control board unresponsive?
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.
Which models is it suitable for?
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.
Installation and recommendations
After installation, a technician must adjust the service parameters (type of gas, power settings) and check combustion and safety features.
What does refurbished mean and what coverage does it have?
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.

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