Saunier Duval Air Pressure Switch Semia Tek F 24 Ref. 0020039198
RefurbishedSaunier DuvalPressure switches

Saunier Duval Air Pressure Switch Semia Tek F 24 Ref. 0020039198

15 €VAT includedIn stock · 1 unit

Pressure switch: refurbished spare part that controls air or water pressure to authorize operation. Useful if the boiler does not start or shows a draft error. Compatible with Semia Tek F 24, Semia Tek C 24 (ref. 0020039198). Includes a one-year warranty and delivery within 2–4 working days in the EU.

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

Key Data

Reference
0020039198
Brand
Saunier Duval
Type of part
Pressure switches
Available units
1 unit in stock
Status
Refurbished
Warranty
1 year
Shipping
2–4 working days (EU)
Return
14 days

The same part (ref. 0020039198) equips these models. Verified compatibility; check the reference before purchasing.

Semia Tek

  • Semia Tek F 24
  • Semia Tek C 24

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)
F02Air fault (SRC/VCM/flue pressure switch).The air pressure switch does not switch when the fan starts due to a lack of pressure differential; check continuity in C–NO/C–NC and inspect the pressure switch tubes/venturi by applying vacuum/pressure.
02Air fault (flow/draught safety).The air pressure switch does not detect the required vacuum/overpressure and the boiler locks out; check with a manometer or test the micro switch closure by applying vacuum and inspect for obstructions in the pressure switch tubes.
F03Repetitive air fault (after several attempts).If the air pressure switch does not open/close reliably during several starts, the boiler logs a repetition of F02; check the switching of the pressure switch and the tightness/cleanliness of the tubes and flue/venturi.
F33Air pressure switch open / air flow fault.The pressure switch does not switch (or remains open) when the fan starts due to lack of draft or misaligned diaphragm; check the micro switch state change when generating differential and inspect the venturi/tubes and flue gas evacuation.
How do I know if this pressure switch is for my boiler?
Verify the reference 0020039198 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 pressure switch controls the pressure/draught (of air in sealed systems) or water to authorize operation.
Is the boiler not starting or showing a draught fault?
If the fan spins but does not ignite, check the pressure tubes (loose/blocked), the diaphragm, and the fan.
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
Check the tightness of the pressure pipes and the switching of the contact.
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.

Spare Parts Related Boiler Semia Tek F 24

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