Hi, My Potterton Performa 30 HE has decided it wants to come on at 4 in the morning when the timer and thermostat are both set to off. When I checked the boiler the burner light is on and motor for the pump is spinning. The rear actuator on the diveter valve is out making the rear micro switch closed. Nothing on the front panel indicates that the central heating has been given the signal to run. The only way to switch the bolier off is to tuner it off.
If I set the boiler to hot water only then the heating doesn't come on, only when in the CH/HW location. The micro switches on the diverter valve have been changed. The thermostat seems to operate as designed and the timer is not giving any signals to allow the CH to engage.
I'm starting to think that it is a fault with PCB but this was only changed 1 year ago, that said it can still fail.
Any ideas?
If I set the boiler to hot water only then the heating doesn't come on, only when in the CH/HW location. The micro switches on the diverter valve have been changed. The thermostat seems to operate as designed and the timer is not giving any signals to allow the CH to engage.
I'm starting to think that it is a fault with PCB but this was only changed 1 year ago, that said it can still fail.
Any ideas?