Grant Euroflame fault 3

What it means

Boiler works but the flame takes longer than expected to stabilise during start up.

Likely causes

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

Where to start

1. Check the air damper setting and the condition of the fan
2. Check room ventilation is adequate, see Section 9.1
3. Check the nozzle size and type