26/30
7.0 Fault
Finding
Burner will not
start
No electricity
Check burner
Check fused isolator
Check control panel
Check time clock
Check stat setting
Check switched on
Check fuses
Check fuse
Check supply voltage
Check control circuit
Check overheat reset
Check lockout
Check flame probe
Check air pressure
switch
Check gas pressure
switch
Check burner motor
Burner starts
but goes to
lockout
Check gas supply
Bad earth
Main gas cock open
Air in gas line
Flame probe failure
Air pressure switch
failure
Gas train gas cock open
Gas pilot valve open
Purge gas line
Replace probe
Ignition failure
Faulty probe
Check earth connections
Check position to
manual
Replace control box
Check H.T. lead
Check gap
Wrong position
Faulty control box
Faulty ignition
transformer
Faulty electrode
Check settings to
manual
