Fan running but no ignition at electrodes
Fault | Fix |
---|---|
air pressure switch hoses loose | check ports and firmly fix |
split / kinked hoses | remove kink / replace hose |
water in hoses (condensation) | dry hoses / replace hoses |
reversed pressure connections (hoses wrong way around) | correctly connect hoses |
split/punctured air pressure switch diaphragm | replace air pressure switch |
damaged combustion chamber seals | replace entire seal |
cracked pilot window or damaged seal | replace glass / seal |
faulty air pressure micro switch | replace air pressure switch |
flue / airway ducts blocked at terminal | clear restrictions/blockages |
faulty fan (not at full capacity) | check/ lubricate bearings | clear debris build up |
blocked / melted venturi | replace fan assembly |
ignition electrodes cracked | check / replace electrodes |
ignition wiring harness damaged / loose | check wiring / connections |
faulty spark generator on p.c.b. | replace p.c.b. |
ignition electrodes gap too far apart | check gap (as per manufacturer’s instructions) |
Other Issues to check
- Noisy Fan
- Noisy Pump
- Noisy Hot Water Flow Switches
- Noisy Solenoid
- Burner Not Igniting
- Boiler Fan Problems
- Boiler Shuts Down
- Explosive Ignition
- Blocked Plate Exchanger