Air Pressure Switch Junkers Ceraclass Excellence ZWC 35 35 3 MFA Ref. 8716761611
RefurbishedJunkersPressure switches

Air Pressure Switch Junkers Ceraclass Excellence ZWC 35 35 3 MFA Ref. 8716761611

30 €VAT includedIn stock · 5 units

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. Reference 8716761611. 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
8716761611
Brand
Junkers
Type of part
Pressure switches
Available units
5 units in stock
Status
Refurbished
Warranty
1 year
Shipping
2–4 working days (EU)
Return
14 days

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)
C6The differential pressure switch does not close.The air pressure switch does not switch to closed when the fan starts (damaged membrane/microswitch or obstruction/water in hoses), so the PCB does not "see" depression. Verify by measuring the continuity of the pressure switch when starting the draft and checking the depression with a manometer at the inlets and the condition of the hoses.
C4The pressure switch does not open in the rest position.The pressure switch contact remains stuck/closed at rest (microswitch jammed or hoses with dirt/condensate), simulating permanent flow. Check with the boiler off that the contact is open, verify the pressure switch "click" and clean/relocate hoses.
C1The differential pressure switch has been activated during operation.During operation, the pressure switch opens due to loss of vacuum or internal fault (intermittent contact), causing draft interruption. Check the continuity of the pressure switch under load and the stability of the vacuum; inspect hoses and connections to the pressure switch body.
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