Saunier Duval Isofast F 35 EA SYMSI 7.0 PCB Ref. S1020000
RefurbishedSaunier DuvalPCBs (control boards)

Saunier Duval Isofast F 35 EA SYMSI 7.0 PCB Ref. S1020000

90 €VAT includedIn stock · 4 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 out, or the display is unresponsive. Compatible with Isofast F30 E H-MOD, Isofast F35 E H-MOD (ref. S1020000). 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
S1020000
Brand
Saunier Duval
Type of part
PCBs (control boards)
Available units
4 units in stock
Status
Refurbished
Warranty
1 year
Shipping
2–4 working days (EU)
Return
14 days

The same part (ref. S1020000) equips these models. Verified compatibility; check the reference before purchasing.

Isofast

  • Isofast F30 E H-MOD
  • Isofast F35 E H-MOD

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 faultFault in the main PCB (PCB SYMSI 7.0), e.g. circuit/EEPROM failure, preventing control; check power supplies and connectors and, if necessary, confirm by replacing with a compatible PCB in good condition.
12No signal user interfaceLoss of communication between the user interface and the main board; a fault in the PCB can prevent sending/receiving data. Check the harness/wiring between the interface and the board, and if there is continuity and correct voltages, suspect the PCB.
20Communication faultIncompatibility/communication defect between interface and main PCB (e.g. incorrect product code/firmware or defective PCB). Check product coding and interface compatibility; if it persists, inspect/replace the PCB.
How do I know if this PCB is for my boiler?
Verify the reference S1020000 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.

Related Spare Parts Boiler Isofast F 35 EA SYMSI 7.0

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