PCB Baxi Roca Laura 30/30 Ref. 4202802

Baxi Roca boilers compatible with reference 122420630

PCB with reference 122420630. 16 verified compatibilities: LAURA 30 A G.N. and LAURA 30 A G.P..

Proven compatibility

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 ref. 122420630 is the part for your boiler

The part reference, model, and equipment revision must be verified against the manufacturer's documentation.

1. Find the reference printed on the installed part and check whether it matches the catalogue reference 122420630. If it is not visible, do not identify the part from its shape alone.
2. Check the full boiler model on its data plate and look for it in the model associations on this page.
3. Compare the connections and physical body with the original part before installation.
4. If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.

Symptoms that require diagnosis on the PCB 122420630

The PCB controls the ignition, modulation, and safety features of the boiler. These are the typical symptoms and what to do:

Common symptoms and faults

• 01

  The boiler does not ignite and there are no indicators lit on the panel.

  Cause: The 1.25 A fuse that protects the transformer on the PCB may have blown, cutting off power to the electronics.

  With the boiler unplugged, check the continuity of the fuse before replacing the complete PCB.

• 02

  The pump or the burner does not start even though the thermostat is calling for heat.

  Cause: The NAIS relays on the PCB do not switch and do not send the ignition command to those elements.

  Listen for the click of the relays when the demand is activated; its absence is a clear indication before changing the PCB.

• 03

  The boiler turns off by itself after a few minutes of operation.

  Cause: It may be due to a relay intermittently losing contact due to wear or overheating.

  Check if the cut coincides with the moment when the pump or the burner should activate, to narrow down which relay is faulty.

• 04

  The boiler does not respond to any controls or indicators, although it has power.

  Cause: The MYRRA transformer that powers the control electronics may have a damaged winding.

  Measure with a multimeter if there is voltage in the secondary of the transformer before replacing the PCB.

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 PCB 122420630

Catalogue reference

122420630

Uniclima internal SKU

PLRL30

Brand

Baxi Roca

Type of part

PCBs (control boards)

Units in stock

0 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.

Transformer fuse (F2)

1.25 A

Transformer

MYRRA, EN 60950

Relays

NAIS, 10 A 250 V~

Manufacturer of the relays

NAIS (Matsushita/Panasonic Electric Works)

PCB / batch code

LAURA 30/30 · LOT 35733 · 4202802

Manuals and technical documentation

Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.

• Baxi Roca LAURA 30 A G.P. manual (PDF) Document © Baxi Roca, provided as a technical reference.