Help ME PLEASE !!!!!!!

[plumb_know]

Hi everyone,

on job now glowworm ultimate 50ff, got pilot but burner won't light, keeps sparking.

Replace gas valve & PCB but still no joy. got gas at inlet of valve. Nothing on burner test point, getting 240 on gas valve lead. Polarity good.

Anyone got any ideas?
Could it be faulty gas valve or pub? how can i test for this?

thanks

 

[ShaunCorbs]

turn the gas off and water guage / guage on inlet of gas valve does it drop?

 

[Harvest Fields]

Check the leads on the board

 

[Harvest Fields]

What lights are on on the pcb?

 

[plumb_know]

yes when turned on drops a little

 

[ShaunCorbs]

so gas valve is opening for pilot does it drop loads?

 

[plumb_know]

checked all leads on board look ok, i replaced 1 at a time when putting new board in

 

[plumb_know]

not lots just small amount, but i did disconnect pilot next to electrode and was getting 30mbar there

 

[plumb_know]

getting 3 LEDS

 

[ShaunCorbs]

you getting voltage on main burner

 

[plumb_know]

checked everything manual saids and all seems ok & put new gas valve in & PCB

 

[plumb_know]

240 on Brown & grey (book saids this is blue)

 

[plumb_know]

have running now can see flame from pilot but keeps clicking and no flame from main burner

 

[Harvest Fields]

What you got at the fan and what speed is it running at?

 

[Frog67]

Injector clean?

 

[AMGasServices]

Try cleaning the injector on the pilot assembly.

 

[plumb_know]

240 and seems to run ok, air switch clicks & also sucked on tube to mimic it and still didn't fire

 

[plumb_know]

i have taken it off & blown through it all, seems clear & blown through new pilot hose from gas valve

 

[Harvest Fields]

What you got on the switch live?

 

[plumb_know]

how best to clean it

 

[plumb_know]

should i be able to see right through?
i am blowing through it and it is hard work to get air out other side

 

[Harvest Fields]

should i be able to see right through?
i am blowing through it and it is hard work to get air out other side

Do me a favour mate. Put it back together leave the case off and pull the ignition lead away from the casing and pilot tube. Then test.

 

[plumb_know]

no difference

 

[plumb_know]

not getting pilot now

 

[Harvest Fields]

Have you checked power on the switch live? What power do you have between live and earth. Live and neutral and earth and neutral? Sounds electrical to me. Are all wires definitely in thewiring block properly?