Grant Euroflame fault 1

What it means

Boiler operates but produces visible smoke from the flue or registers a high smoke number, indicating poor combustion.

Likely causes

1. Motor/pump fault
2. Electrode/ignition fault
3. Control box fault
4. Oil pump fault
5. Solenoid valve/coil fault
6. Nozzle/fuel contamination
7. Combustion air/head setting fault
8. Photocell fault
9. Balanced flue recirculation
10. Boiler or flue blockage
11. Insufficient air supply
12. Faulty or worn fan
13. Inadequate room ventilation
14. Incorrect nozzle size or type fitted for required boiler output
15. Fuel pressure too high
16. Incorrect diffuser position causing poor flame pattern or combustion issues
17. Debris, leaves, hair, fluff accumulation blocking air inlet
18. Debris, leaves, hair, fluff accumulation on fan impeller or housing
19. Worn or damaged nozzle causing poor combustion

Where to start

1. Burner motor runs? NO -> Check L & N to control box -> if fail check boiler controls
2. Burner motor runs? YES -> Lockout within 1 second? YES -> check motor/pump seized or tight -> NO replace motor capacitor, YES repair/replace motor/pump
3. Lockout within 1 second? NO -> Lockout after 12 sec purge? YES -> check ignition spark proved -> NO check and set electrodes if still fails replace control box