Trianco Contractor WM 70, Инструкция по эксплуатации, установке, пусконаладке и обслуживанию, Страница: 23 / 28

ELECTRICITY SAFETY - Before making any electrical checks, switch off mains supply to boiler.
FAULT POSSIBLE CAUSE ACTION
BURNER WILL NOT START Control box locked out - Light on Press reset button on front of burner.
N.B. ONLY TRY TWICE
Boiler over heat thermostat or Ensure all controls are calling for heat and
other system controls satisfied over heat thermostat reset.
Fuse blown Fit new 5 amp fuse, if it blows again, check
for short circuit in wiring.
Check for live continuity up If live supply confirmed, change control box
to burner
Motor or pump seized Check for rotation and replace as
necessary.
BURNER STARTS No oil supply Check oil level in tank and feed to burner.
BUT FLAME NOT
ESTABLISHED
Photo-cell not seeing flame Clean photo-cell and ensure it is fully plugged in.
Air trapped in pump Bleed off air through pressure gauge tapping.
Solenoid valve faulty Check coil for continuity and replace if faulty.
Nozzle blocked Replace nozzle with one of same specification.
Electrodes incorrectly set Reset gap and position electrodes as shown in Burner
diagram.
Electrode insulator cracked Check and replace if insulator cracked or crazed.
Ignition transformer and H.T. contacts Check for spark and condition of H.T. contacts.
faulty Replace as necessary.
Low oil pressure Check pump pressure and adjust to correct setting.
FLAME ESTABLISHED Oil contaminated with water Run off oil at burner until free of water and drain
BUT BURNER LOCKS condensation from tank
OUT AFTER FEW SECONDS
Oil filter partially blocked Wash filter clean with kerosene.
Photo-cell fault Clean photo-cell and ensure it is fully plugged in.
Replace if faulty.
Oil pressure low Check pump pressure and adjust to correct setting.
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9. FAULT FINDING