CH comes on as expected if there is demand. Burners light no problem. But then it will cut off between 5s -> 65s. Most of the time this is just after the gas pressure is increased after 60 seconds.
The boiler then anti-cycles for 2mins before redoing the above. So you get 60 seconds on low heat and then 2 mins off - that heats rads to 40c rather than 70c
.
Very occasionally e.g. once a day, it will stay on properly (until someone switches on DHW).
Water pressure is fine, and I think the pot is okay (if it is working and I turn down the pot, it will cut off).
Pump is probably fine too - it pumps the lukewarm around the house okay.
DHW is fine - can run as long as required without issue.
Given DHW is fine, and ignition is fine on CH, I suspect an intermittent problem with CH sensor or driver board.
Anybody seen this behaviour before or have any suggestions/recommendations for someone prepared to look at it in GL6/Stroud area?
Parts are mostly obsolete and the fan makes a racket, so will replace this year but would be good to have CH for another couple of months...
The boiler then anti-cycles for 2mins before redoing the above. So you get 60 seconds on low heat and then 2 mins off - that heats rads to 40c rather than 70c
.Very occasionally e.g. once a day, it will stay on properly (until someone switches on DHW).
Water pressure is fine, and I think the pot is okay (if it is working and I turn down the pot, it will cut off).
Pump is probably fine too - it pumps the lukewarm around the house okay.
DHW is fine - can run as long as required without issue.
Given DHW is fine, and ignition is fine on CH, I suspect an intermittent problem with CH sensor or driver board.
Anybody seen this behaviour before or have any suggestions/recommendations for someone prepared to look at it in GL6/Stroud area?
Parts are mostly obsolete and the fan makes a racket, so will replace this year but would be good to have CH for another couple of months...
