Hi All,
Having a nightmare with my boiler. Hot water cycles - get's really hot, scorching hot, then cycling to luke warm, back to very hot. Burner effectively cuts out for 10 seconds then fires back up then does the same again after a minute. This only happens with hot water, CH runs fine (although I only have CH temp turned up to 2/3 max, any higher the radiators are too hot to touch) so may well do it for them also?
The parts I've had replaced in the last few weeks are:
I actually have a different looking diverter valve than I think I should on the 105 HE
Mine looks like this:
Whereas when I ordered the part for the diaphragm, it came for this one - which every time I google the 105 HE they seem to have this fitted instead:
So not sure if the wrong part has been fitted at some point? (lived here less than 2 years) Or if this makes a difference?
Any advice much appreciated - thanks.
Having a nightmare with my boiler. Hot water cycles - get's really hot, scorching hot, then cycling to luke warm, back to very hot. Burner effectively cuts out for 10 seconds then fires back up then does the same again after a minute. This only happens with hot water, CH runs fine (although I only have CH temp turned up to 2/3 max, any higher the radiators are too hot to touch) so may well do it for them also?
The parts I've had replaced in the last few weeks are:
- PCB (this was 12 months ago actually)
- Diverter valve removed, cleaned, diaphragm check and ok. Front and back nut thingys replaced and regreased - pin moves freely (this was leaking from the pipes at the bottom for a while, but this leak has been fixed now and doesn't anymore)
- Primary heat exchanger cleaned & re-fitted
- Plate heat exchanger cleaned & re-fitted.
- New DHW temp sensor fitted
- Central heating system has been filled with Fernox F2 and flushed.
- Boiler has been serviced.
I actually have a different looking diverter valve than I think I should on the 105 HE
Mine looks like this:
Whereas when I ordered the part for the diaphragm, it came for this one - which every time I google the 105 HE they seem to have this fitted instead:
So not sure if the wrong part has been fitted at some point? (lived here less than 2 years) Or if this makes a difference?
Any advice much appreciated - thanks.
