No heating help !

[foolme]

Just got back from Spain ( great holiday ) only to find boiler expired in my absence . Said boiler Ravenheat 100et 10 yrs. old - never any real problems . Fan running up and air pressure switch making ok & ignitor firing merrily - no flame .Power to gas valve ok & gas valve solenoid coil res. of 115ohms - any opions please

 

[stem]

Haven't forgotten to turn the gas on when you got back from holiday have you?

 

[foolme]

Curiously had thought of the gas being off but cooker cooking away quite the thing - thanks for the thought anyway

 

[joe-90]

Maybe there is air in the pipe.

 

[45yearsagasman]

Please tell us Joe, how would air get into this boiler and what pipe are you referring to?

 

[foolme]

Ta for that 45yearsagasman was wondering about air , pipe .......
anyway ......

 

[joe-90]

Please tell us Joe, how would air get into this boiler and what pipe are you referring to?

What do you think has happened then? You don't get a puncture in your bike tyre when you don't use it - but you can get a slow leak that goes down over weeks.

My guess is that the gas pipe in isn't fully gas tight - and (thanks to Boyles Law) the pipe now contains more air than anything and it won't fire up.

What do you think? 45 years should tell you something eh?

 

[45yearsagasman]

Quote:- thanks to Boyles Law
Would that be Frankie Boyle?

 

[joe-90]

No, Katie.

 

[foolme]

Got loan of manometer - gas to inlet of gas valve no gas at outlet .
Looks like game over for the gas valve ( and my pocket money ! ) -
Thanks to all for opions offered

 

[jackecole]

won't be gas at oyulet if gav valve isn't opening. If voltage at gas valve (240v)?? and resistance of coil ok, could be jammed armature.

 

[DeltaT2]

Quote:- thanks to Boyles Law
Would that be Frankie Boyle?

Ach ignore him 45ygm he's a complete tube!
I've known Frankie since he was a pimple!

 

[Deleted member 63160]

Maybe there is air in the pipe.

Is that specially trained air that avoids the cooker "that is cooking away"
but just heads to the boiler?

 

[Agile]

If voltage at gas valve (240v)?? and resistance of coil ok, could be jammed armature.

If there was 240v applied to a coil with a resistance of 115 Ω then there would be a very rapid overheat situation!

The OP has already exceeded what he should have been doing and seriously needs a gas registered engineer!

Pretty unlikely to need a new gas valve though!

Tony

 

[ChrisOxford]

Has this gas valve got a modulating coil? That could explain the 115 Ω .