Request for DHW does not fire the boiler -

[onpiopah]

Hi,
I have a Ravenheat 100. CH works fine but when i turn on the hot tap the water runs cold for a very very long time before it heats up. It will also turn itself on and off again. It seems to be worse when the CH is turned off and better when the temp is turned up high.


The diverter valve is working fine and the flow control switch is aslo working. I have ordered a themistor sensor to replace the current one. After that I am not sure - any ideas.

 

[andyg0507]

firstly how have you checked that divertor and flow switch are operating correctly and secondly are you gas safe registered?

 

[onpiopah]

Hi not wanting to seem impertinent considering you have posted me a reply but the question you pose is actually in the body of my question. However i appreciate your taking the time to reply thank you.

And no I am not gas certified.