Saunier Duval Isofast F 28 E PCB Ref. 05724800
RefurbishedSaunier DuvalPCBs (control boards)

Saunier Duval Isofast F 28 E PCB Ref. 05724800

100 €VAT included

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 out, or the display is unresponsive. Compatible with C 28 E, C 28 E NOx, F 28 E (ref. 05724800). 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
05724800
Brand
Saunier Duval
Type of part
PCBs (control boards)
Available units
0 units in stock
Status
Refurbished
Warranty
1 year
Shipping
2–4 working days (EU)
Return
14 days

The same part (ref. 05724800) equips these models. Verified compatibility; check the reference before purchasing.

Isofast

  • C 28 E
  • C 28 E NOx
  • F 28 E
  • C 35 E
  • F 35 E
  • C 24 E V

Isomax

  • C 28 E
  • F 28 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 printed circuit board fault.The main PCB is faulty. Check auxiliary voltages (5/12 VDC) and connectors of the PCB; if the power supply and wiring/UI are correct and the board does not deliver voltages or shows damage/continuous reset, replace the PCB.
20Communication fault/incompatible interface with the main PCB.The main PCB is incompatible or there is a communication failure with the user interface (coding/DSN or e‑Bus). Verify product code and compatibility UI↔PCB; if the fault persists with the correct UI, the cause is the PCB.
How do I confirm that this PCB is the correct one for my boiler?
Check the silkscreened reference 05724800 on your PCB and ensure that your boiler model is on the list of compatible ones; also compare the number and position of the connectors.
Which models is this PCB suitable for?
It is a PCB shared by several models of the same range (see Compatibility tab). If your model does not appear, send us a photo of the silkscreen and we will confirm it.
When installing it, do you need to parameterize or configure anything?
If you replace it with the same reference, it is usually sufficient to replicate the jumpers/configuration of the original; after installation, a technician should verify service parameters (type of gas, power settings) and check combustion and safety features.
Is it the same as the display or control panel?
No. This is the main PCB (controls ignition, modulation, sensor readings, and safety features). The display/user interface is a separate piece; if your fault is with the panel, it is not this PCB.
Why does a PCB fault occur and how can I prevent the new one from failing?
It is usually due to external causes: voltage spikes, shorts in the pump, fan, or valves, humidity, or poor grounding. Before installing the new one, check peripherals, wiring, and connectors, fix water leaks, and verify polarity and grounding.
What does refurbished mean and what coverage does it have?
Part removed from an out-of-service boiler, inspected and bench-tested; not factory new. Includes 1-year warranty and 14-day return policy. Delivery within 2–4 working days in the EU.

Spare Parts Related Boiler Isofast F 28 E

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