Pilot light on but doesnt always fire up

adam0303 · 25 Nov 2010

Hi all

Boiler seems to work fine but have noticed on 2 occasions this week that if i put the boiler on not long after turning it off that if i try turn it on again that it wont fire up or takes a few attempts anyone got any ideas.

linkyplumb · 25 Nov 2010

And the boiler is?

Wangerman · 25 Nov 2010

adam0303 said:
Hi all

Boiler seems to work fine but have noticed on 2 occasions this week that if i put the boiler on not long after turning it off that if i try turn it on again that it wont fire up or takes a few attempts anyone got any ideas.

Could be an intermittent fault with the gas valve ?

Could just be it needs to complete it's over run cycle to dissipate heat ?

adam0303 · 25 Nov 2010

its and ideal mexico 40 floor standing boiler had some part replaced last year as the pilot light wouldnt come back on or light should i say

Wangerman · 25 Nov 2010

adam0303 said:
its and ideal mexico 40 floor standing boiler had some part replaced last year as the pilot light wouldnt come back on or light should i say

Probably controls or gas valve but I am not an expert so wait for a better answer

adam0303 · 25 Nov 2010

I wont try and fix it but because i had a part replaced in february i want to get an idea if its related so as i dont get ripped off if it is that part thats to blame not sure what it is all i know is it was a big alloy block and one of its jobs was igniting the pilot light

Wangerman · 25 Nov 2010

adam0303 said:
I wont try and fix it but because i had a part replaced in february i want to get an idea if its related so as i dont get ripped off if it is that part thats to blame not sure what it is all i know is it was a big alloy block and one of its jobs was igniting the pilot light

Sounds like the gas valve.

Does it have something like Dungs written on it ?

And you have to turn and press down a grey plunger to re-ignite it if the flame goes out ?

The older mexico's werent self igniters

adam0303 · 25 Nov 2010

All i can see is something that says honeywell 4600a but i checked the hotwater tank upstairs and the black thermostat thingy wasnt on the tank and must have been knocked off probably by the wife i will blame her anyway i have put that back on and pulled the curtain rail thingy back around it not sure if that may have affacted it

Wangerman · 25 Nov 2010

adam0303 said:
All i can see is something that says honeywell 4600a but i checked the hotwater tank upstairs and the black thermostat thingy wasnt on the tank and must have been knocked off probably by the wife i will blame her anyway i have put that back on and pulled the curtain rail thingy back around it not sure if that may have affacted it

Wouldn't have thought so ,you have just reseated the cylinder stat

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Pilot light on but doesnt always fire up

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