I have a boiler which is not igniting. It has the ignition lockout light on. I tried tapping the homeywell valve lightly & pressing the reset & the light goes out for 20 secs, then comes back on. The unit dont light up. 
Halstead Best40db Boiler
- Thread starter macandy
- Start date
is this on hw and heating?
is the fan running?
dont take noise for an answer
is the fan running?
dont take noise for an answer
whats the pressure atwhats the gc number as i dont know a halstead best
is there a power supply to fan or aps
if there is no supply it will be the pcb the red and black one on the right side of the gas valve
if there is a supply to fan then check or replace the fan
you will need to use a meter not a neon screwdriver to test supply
if there is no supply it will be the pcb the red and black one on the right side of the gas valve
if there is a supply to fan then check or replace the fan
you will need to use a meter not a neon screwdriver to test supply
Soz watch foot ball & so good. I think the problem is the fan as that would account for the noise the unit was making in the days before the break down & yet seemed to come from the pump. I am going to get a new fan & fit that. THANKS ALL FOR YOUR HELP! regards Andy
it'll prob be that small pcb, think its described as an aquastat or something. Changed loads when I used to look after some of these on an estate. Usually clicks alot and can't make its mind up. P155 poor quality relays on pcb cause the fault.
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