Greenstar 28 I junior ignition lockout

[flesi]

Hi guys , having an issue with the "great" greenstar . Basically it does try to fire up, u can hear the spark clicking , it does try few times then it goes to lockout.(flushing lights) Checked the gas valve , condensing trap , can't check the ratio .before I start striping out .. any suggestion ? Cheers

 

[Killy Bing]

Have you checked if its actually sparking?

 

[flesi]

Thx for quick reply, I can hear clicking as is trying to fire up

 

[Ermintrude]

That's not sparking. Electrodes are pretty common?

 

[flesi]

That's not sparking. Electrodes are pretty common?

Thx , I will try that next

 

[ne1ls0n]

Gas valve solenoid jammed? Had this lastweek

 

[flesi]

I checked the solenoids for resistance and they are ok

 

[Killy Bing]

Is it passing any gas? Inlet filter could be blocked with black dust

i carry a spare set of electrodes to check the leads if they are ok.

what readings did you get for the solenoids?

 

[flesi]

148 Oms on top one and I think 127 on the bottom one

 

[Ermintrude]

Does gas pressure drop slightly when it try's to ignite ? The fan is running right??

 

[flesi]

I did suspect the fan, it's seems running ok but when boiler does lockout it runs for few second on higher speed than it stops

 

[mfgs]

If its sparking, you need to confirm its getting gas.

 

[flesi]

Need to go back to it and strip it down and have a full check, need to get better with those worcesters as I got the same boiler on my own house ( not installed by me by the way)

 

[Killy Bing]

Repeat after me "forgive me father for i have sinned".....

 

[flesi]

After striping the boiler out , cleaned the baffles , changed the electrode and the seal...... Still the same issue , boiler won't fire up. Tenants on my head. Checked everything again gas valve 35 dc, resistance on coils ok, fan running ok , inlet pressure 21 mbar. I ran out of ideas until I checked the meter ... Guess what I found???

 

[IDCHAPPY]

He's ran out of credit?

 

[flesi]

He's ran out of credit?

Inlet pressure at the boiler 21 mbar ...

 

[albatross]

Does inlet pressure drop a tad when it tries to light? If not could be gas valve.

 

[flesi]

Does inlet pressure drop a tad when it tries to light? If not could be gas valve.

Yes it does drop

 

[AWheating]

Guess what I found???

the meter box had been turned into a night club for cats, there was a ginger tom guarding the door??

 

[albatross]

Yes it does drop

How much does it drop?

 

[flesi]

Quite a lot actually

 

[albatross]

Restriction at meter? half shut ECV? meter swapped for bicycle inner tube?!

 

[Chalked]

Inlet valve partially turned off?

 

[flesi]

Yep ECV half shut after the lovely tenants threw all the shoes on it and turned the ECV half way down. So I was getting 21 mbar inlet standing pressure but the boiler start firing up the pressure would go as low as 6 mbar . I thought it was the regulator on the meter.