Saunier Duval PCB Isomax F35 H MOD 2 Ref. 0020048284
RefurbishedSaunier DuvalPCBs (control boards)

Saunier Duval PCB Isomax F35 H MOD 2 Ref. 0020048284

105 €VAT includedIn stock · 6 units

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 Isomax F 35 H-MOD, Isotwin C 25 E, Isotwin C 30 E (ref. 0020048284). 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
0020048284
Brand
Saunier Duval
Type of part
PCBs (control boards)
Available units
6 units in stock
Status
Refurbished
Warranty
1 year
Shipping
2–4 working days (EU)
Return
14 days

The same part (ref. 0020048284) equips these models. Verified compatibility; check the reference before purchasing.

Isomax

  • Isomax F 35 H-MOD

Isotwin

  • Isotwin C 25 E
  • Isotwin C 30 E

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)
13Main PCB fault.Fault in the main PCB or its connections causes loss of control/readings. Check power supply and wiring harness, connections with the panel/interface; if it persists, test or replace the PCB.
20Communication/compatibility fault between user interface and main circuit (software/coding).After replacement or misalignment, the PCB and the display do not share the product code or protocol; the PCB locks the equipment. Verify product and bus coding (MMI/eBUS), check wiring, and if not corrected by reprogramming, replace the PCB or interface.
How do I know if this PCB is for my boiler?
Verify the reference 0020048284 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part. It is a Saunier Duval 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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