Fault Finding - Trianco EuroStar Band A Operation Manual

BURNER FAULT FINDING
Note: before making any electrical checks or modifications, ensure the mains supply to the boilers is switched off.
Fault
Burner will not start
Burner starts but flame will not
establish
Flame establishes but cuts out after
a few seconds
Morning start lock-out
Delayed ignition (burner pulsates)
Burner starts violently
Burner repeatedly attempts to fire
(balanced-flue only)
Combustion fumes smell
Possible cause
Control box locked out
High limit stat tripped
System controls satisfied
Blown fuse
Motor or pump seized
No oil supply
Air trapped in pump or oil line
Solenoid coil not opening
Blocked nozzle
Electrodes incorrectly set
Electrode insulation cracked
Faulty ignition leads
Low oil pressure
Oil contaminated with water
Oil filter partially blocked
Faulty photocell or photocell not seeing
flame
Low oil pressure
Faulty non-return valve or air leak
Low voltage to the boiler
Incorrect combustion settings
Oil in storage tank below level of burner
Nozzle partially blocked
Low oil pressure
Flue blocked or damaged
Fan slipping on shaft
Pump coupling loose or worn
Electrodes incorrectly set
Electrodes damaged
Faulty ignition leads
Exhaust gas in combustion air
Combustion chamber access cover not
secure
Burner incorrectly fitted
damaged
Flue incorrectly fitted or gasket damaged
Action
Press red reset button on burner
Press red reset button on rear of control panel;
check function of boiler stat
Ensure that all controls are calling for heat
Fit new fuse (5A); if problem persists, look for short
circuits in the wiring
Check for rotation; replace as necessary
Check oil levels in storage tank; check for
adequate flow through the oil supply pipes
Bleed excess air from the pump via the pressure
gauge connection
Check coil for continuity; replace as necessary
Replace the nozzle
Reset gap and position to dimensions given
Replace as necessary
Replace as necessary
Check pump pressure and adjust to level given
Run oil from drain cock at tank until free of water
Wash filter clean with kerosene
Clean photocell; check for damage; ensure it is
fully inserted; replace as necessary
Check pump pressure and adjust
Replace non-return valve; repair leak
Check with electricity supplier to remedy
Check combustion
conditions; set air intake and oil pressure
Raise tank or fit two-pipe oil supply
Replace nozzle
Check pump pressure and adjust
Check flue; replace/repair as necessary
Check fan; replace/repair as necessary
Check coupling; replace/repair as necessary
Reset electrode gap and position to dimensions
given in burner details leaflet
Replace as necessary
Replace as necessary
Repair/replace leaking flue sections as necessary;
check for obstructions close to the terminal
Tighten nuts; replace seal as necessary
or gasket
Tighten burner to boiler; replace seal as necessary
Tighten mounting nuts; replace seal as necessary
under normal running