Hi - We cannot get the central heating to work however the hot water and underfloor heating in the kitchen is ok. We have checked the pressure in the boiler, bled the radiators and also replaced the batteries in the thermostat. Not sure what to do?
Has room start has power check 4and5 terminal got power in PCB to find out that on signal coming from from start link 4and5 with piece of wire if OK than98code flow or return sensor is blocked
ltd
October 2012
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