Hello -
I am having a few problems with my boiler and wondered if anyone could help me with a diagnosis. Since we returned from a short Christmas break, the boiler has not been able to continue supplying central heating reliably, and it is refusing to supply hot water unless the central heating is already turned on with the green ignition light on.
I have checked the following:
- Condenser pipe (mostly indoor, has had two kettles of boiling water poured through it but it is not blocked at all)
- Reset and recommissioned the thermostat (Danfoss RX1 and RF wireless dial thermostat)
- Every radiator bled and no air remaining in them (with the exception of the bathroom radiator, but this is isolated at its valves until a replacement gets fitted)
- Checked for any error codes on the boiler (None, though the blue light doesn't illuminate while the boiler is on and I am led to believe it should)
The heating will tend to turn on OK after the boiler is reset, and at this point the hot water will work fine but after approx 15-20 min the pressure dial will shoot up from 1-1.5bar where it tends to stay up to about 2bar, at which point the boiler cuts out completely. A "ticking" noise can be heard from the relays in thee boiler, and an ominious rumbling/gurgling noise comes from what sounds like the expansion vessel. There is no water coming from the pressure release pipe outside the house.
I am making a wild stab in the dark that there is a large amount of air and/or contamination inside the boiler/system somewhere that needs clearing out. I have a British Gas engineer coming on the 17th Jan to have a look (we have Homecare) but was wondering if anything else can be done in the meantime as it's very inconvenient having no central heating!
Oh, the boiler was installed in August 2008 and has been serviced annually since then.
Ta
I am having a few problems with my boiler and wondered if anyone could help me with a diagnosis. Since we returned from a short Christmas break, the boiler has not been able to continue supplying central heating reliably, and it is refusing to supply hot water unless the central heating is already turned on with the green ignition light on.
I have checked the following:
- Condenser pipe (mostly indoor, has had two kettles of boiling water poured through it but it is not blocked at all)
- Reset and recommissioned the thermostat (Danfoss RX1 and RF wireless dial thermostat)
- Every radiator bled and no air remaining in them (with the exception of the bathroom radiator, but this is isolated at its valves until a replacement gets fitted)
- Checked for any error codes on the boiler (None, though the blue light doesn't illuminate while the boiler is on and I am led to believe it should)
The heating will tend to turn on OK after the boiler is reset, and at this point the hot water will work fine but after approx 15-20 min the pressure dial will shoot up from 1-1.5bar where it tends to stay up to about 2bar, at which point the boiler cuts out completely. A "ticking" noise can be heard from the relays in thee boiler, and an ominious rumbling/gurgling noise comes from what sounds like the expansion vessel. There is no water coming from the pressure release pipe outside the house.
I am making a wild stab in the dark that there is a large amount of air and/or contamination inside the boiler/system somewhere that needs clearing out. I have a British Gas engineer coming on the 17th Jan to have a look (we have Homecare) but was wondering if anything else can be done in the meantime as it's very inconvenient having no central heating!
Oh, the boiler was installed in August 2008 and has been serviced annually since then.
Ta