Fault Finding - Trianco EuroTrader 50/90 User, Installation, Commissioning & Servicing Instructions

7. FAULT FINDING

ELECTRICITY SAFETY - Before making any electrical checks, switch off mains supply to boiler.
FAULT
BURNER WILL NOT START
BURNER STARTS
BUT FLAME NOT
ESTABLISHED
FLAME ESTABLISHED
BUT BURNER LOCKS
OUT AFTER FEW SECONDS
POOR FLAME CUT-OFF
POSSIBLE CAUSE
Control box locked out - Light on
Boiler thermostat or other system
controls satisfied
Fuse blown
Check for live supply continuity up
to burner
Motor or pump seized
No oil supply
Photo-cell not seeing flame
Air trapped in pump
Solenoid valve faulty
Nozzle blocked
Electrodes incorrectly set
Electrode insulator cracked
Ignition transformer and H.T.
contacts
Low oil pressure
Oil contaminated with water
Oil filter partially blocked
Photo-cell fault
Oil pressure low
Air in pump or at back of nozzle
Oil contaminated with water
Dirt in solenoid valve
Pump shut-off piston sticking
23
ACTION
Press reset button on front of burner.
N.B. ONLY TRY TWICE
Ensure all controls are calling for heat.
Fit new 5 amp fuse, if it blows again, check
for short circuit in wiring.
If live supply confirmed, change control box
Check for rotation and replace as
necessary.
Check oil level in tank and feed to burner.
Clean photo-cell and ensure it is fully
plugged in.
Bleed off air through pressure gauge
tapping.
Check coil for continuity and
replace if faulty.
Replace nozzle with one of same
specification.
Reset gap and position
electrodes as shown in Burner diagram.
Check and replace if insulator cracked or
crazed.
Check for spark and condition of HT
contacts. Replace as necessary.
Check pump pressure and adjust to
correct setting.
Run off oil at burner until free of
water and drain condensation from tank
Wash filter clean with kerosene.
Clean photo-cell and ensure
it is fully plugged in. Replace if faulty.
Check pump pressure and adjust
to correct setting.
Bleed pump through pressure gauge port,
also check for leaks in oil line if 2-pipe
system.
Run off oil at burner until free of water and
drain condensation from tank.
Clean or replace valve.
Replace pump.