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boydell
My old Worcester combi has become noisey and seems to be labouring during this spell of cold weather. The CH pressure is normal, and has been good since I replaced the PRV in the summer.
It seems to have started since I turned the water temp setting up from about 1/2 to 3/4. The noise is a constant whine/come drone when ever the CH or DHW is used.
I have given the Grundfos pump a good thump, removed the screw and the impeller seems to turn OK by hand.
So far it keeps working, providing hot water and CH, but I wonder for how long?
With my limited knowledge it seems the only moving parts are the pump and the fan which might be the cause... but what do I know?
Any advice welcome... cheers.
regards,
boydell.
It seems to have started since I turned the water temp setting up from about 1/2 to 3/4. The noise is a constant whine/come drone when ever the CH or DHW is used.
I have given the Grundfos pump a good thump, removed the screw and the impeller seems to turn OK by hand.
So far it keeps working, providing hot water and CH, but I wonder for how long?
With my limited knowledge it seems the only moving parts are the pump and the fan which might be the cause... but what do I know?
Any advice welcome... cheers.
regards,
boydell.
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