I have an Ideal Classic Boiler. It keeps cutting out before CH gets hot. Only the upstairs heating works, virtually no heat downstairs. The piping to and from the boiler gets very hot which might explain why it cuts out all the time.
Gas board told me the return pipe from downstairs to pump was blocked and I would need a powerflush. I was not convinced the GBP600 would be well spent so did the following:
1, Replaced pump, checked 3-way valve and thermostat; both working fine and checked by Gas Board and another plumber
2, Had a Magna clean installed which I was advised would clean the system although it might take longer than a powerflush, would be better as a powerflush simply dislodges the flith and moves it around
3, Plumber replumbed rad in bathroom so it would run when CH was on as well as HW (the pipe to rad was fed from HW inlet pipe to tank after 3 way valve. This was changed to feed off main pipe before the 3 way valve so rad worked with CH and HW.
4, Removed all of the 7 radiators and cleaned them out with hose pipe. Lots of black sludge came out of them
5, Closed all radiators and ran the pump, opened run off tap and water flowed out pretty clear.
I assume the system is clean now and no blockages!?!
New Problem. NO HOT WATER and newly piped rad in bathroom stone cold. Took newly plumbed bathroom rad off and opened up pipes. Water spluttered out suggesting air lock. Water ran hot, clear and no apparent sign of air.
After all this boiler still cuts out all the time and pipes to and from it are hot but still hardly any CH. Is there an air lock somewhere?
Any ideas?
Gas board told me the return pipe from downstairs to pump was blocked and I would need a powerflush. I was not convinced the GBP600 would be well spent so did the following:
1, Replaced pump, checked 3-way valve and thermostat; both working fine and checked by Gas Board and another plumber
2, Had a Magna clean installed which I was advised would clean the system although it might take longer than a powerflush, would be better as a powerflush simply dislodges the flith and moves it around
3, Plumber replumbed rad in bathroom so it would run when CH was on as well as HW (the pipe to rad was fed from HW inlet pipe to tank after 3 way valve. This was changed to feed off main pipe before the 3 way valve so rad worked with CH and HW.
4, Removed all of the 7 radiators and cleaned them out with hose pipe. Lots of black sludge came out of them
5, Closed all radiators and ran the pump, opened run off tap and water flowed out pretty clear.
I assume the system is clean now and no blockages!?!
New Problem. NO HOT WATER and newly piped rad in bathroom stone cold. Took newly plumbed bathroom rad off and opened up pipes. Water spluttered out suggesting air lock. Water ran hot, clear and no apparent sign of air.
After all this boiler still cuts out all the time and pipes to and from it are hot but still hardly any CH. Is there an air lock somewhere?
Any ideas?
