No central cheating but hot water is ok

[Djwales1]

Hi, I turned on the CH for the first time since spring only for the boiler not to fire up, although the same boiler works fine for hot water. I have a feeling the timer unit is perhaps not sending the right message to the boiler as when I turn on normally the the boiler on light would flash to indicate that temperature control is on. Could this be possible or am I barking up the wrong tree.

Thanks

Dan

 

[Space cat]

Is there a room thermostat somewhere?

 

[Djwales1]

Hi yes there is , I have also checked this to see if working

 

[45yearsagasman]

Got one of these? View media item 30313 View media item 30391

 

[Djwales1]

Cannot see on anywhere . What is it ?

 

[Space cat]

We need a lot more information here. Do you have a hot water cylinder or is your boiler a combi? Where is the 'boiler on' light'? Is it on the timer unit or the boiler itself - or is the timer unit part of the boiler?