Glowworm PCB

[Dave]

Hi
Has anybody had any problems with PCB's on Glowworm back-boiler inset, have fitted 2 and it still won't rectify, and I have 5mv at PCB.

 

[RGII79]

have u checked the pilot for blockage

 

[Dave]

Fitted new complete oxi pilot & t/c lead, fault finding chart says if you get 5mv at pcb the board is faulty, but I fitted 2, just wondered if there is a batch of faulty pcb's.

 

[RGII79]

2 faulty pcb? were they in sealed packing

 

[RGII79]

were are you getting the 5mv on the pcb

 

[RGII79]

are you getting a spark and pilot lighting and thengetting 5mv at pcb

 

[Dave]

PCB' were all brand new in sealed boxes, getting a spark, pilot lights, then I get 5mv across terminals tc-gnd & tc-sgn on pcb these two connections go to the interuptor on T/C to give the 5mv. to make the board rectify but it still won't rectify.

 

[RGII79]

have you turn the temp control to max and check for and check for 230 at thermostat control just after pilot lights

 

[RGII79]

what was the initial problem when you first got to boiler
think it mat be your gas valve

 

[Dave]

don't think you can get 230 until board has rectified

 

[Dave]

Thanks for all the advise, fault finding chart still says change pcb, just have to sleep on it, tomorrow is another day.

 

[RGII79]

had a quick look at the fault finding a min ago its a weird one strange that two pcb would be faulty though have a look at the thermocouple again let us know how u get on

 

[Dave]

Hi
thanks for all the comments, glowworm Tech advise are a waste of space, when you get a problem like this you start to doubt your own ability. Think I could be ripping it out and fitting a combi, thanks again for your interest in my problem

 

[vern]

Hi
thanks for all the comments, glowworm Tech advise are a waste of space, when you get a problem like this you start to doubt your own ability. Think I could be ripping it out and fitting a combi, thanks again for your interest in my problem

Hi Dave have you done basics, polarity and a good earth etc? Long shot but if someone messed with the wiring elsewhere?

 

[Dave]

Hi
polarity is ok not sure about the earth, but the spark is ok and the pilot solenoid works, but it rectifies through T/C interuptor and not through ignition system.