Hi Guy's. Not long moved into our new house and switched on the c/h for the first time. Problem. potterton ep2002 programmer and potterton boiler, honeywell thermostat. central heating will only work if the hot water is set to on. if i turn the central heating off the rads still get hot unless i turn the stat right down. Is this a wiring fault in the programmer?
The programmer is set to full pump which is where it should be. Any advise is much appreciated.
The programmer is set to full pump which is where it should be. Any advise is much appreciated.