I have a Glowworm 30CXI combi condensing boiler installed in the house I recently purchased. Unfortunately it doesn't produce constant hot water, but instead pulses hot, cold, hot, cold. This is the same when using a single tap or multiple taps. Each pulse or cycle is about 20 to 30 seconds. When the hot water isn't coming out of the tap it is feeding the central heating, as the radiator nearest the boiler starts to get warm.
We had a Corgi registered plumber in to take a look. The first guess was it was gunk from the old radiators clogging the valve that separates the outlet to the central heading from the outlet to the hot water. However, when the boiler was drained and the valve removed their was very little gunk at all and it was relatively clean. The valve and other components were thoroughly cleaned, greased and replaced back in the boiler... but the same pulsing problem occured.
Several calls to Glowworm and checks on other components (e.g. heat exchanger) later and my plumber has run out of ideas.
My options now are:
1) Get a Glowworm engineer round.
2) Replace the boiler (any recommendations BTW?)
3) Find others with similar experiences, who may know fixes, by reading and posting on online Forums like DIYnot.com!!
Does anyone have any suggestions?
Many thanks in advance for you help.
cheers
Andy
We had a Corgi registered plumber in to take a look. The first guess was it was gunk from the old radiators clogging the valve that separates the outlet to the central heading from the outlet to the hot water. However, when the boiler was drained and the valve removed their was very little gunk at all and it was relatively clean. The valve and other components were thoroughly cleaned, greased and replaced back in the boiler... but the same pulsing problem occured.
Several calls to Glowworm and checks on other components (e.g. heat exchanger) later and my plumber has run out of ideas.
My options now are:
1) Get a Glowworm engineer round.
2) Replace the boiler (any recommendations BTW?)
3) Find others with similar experiences, who may know fixes, by reading and posting on online Forums like DIYnot.com!!
Does anyone have any suggestions?
Many thanks in advance for you help.
cheers
Andy