the thermister on the central heating part became open circuit.
ki cheung December 2007 |
There are several reasons for this. As above pump not running. If this was the case th burners would come on for a few seconds and go out, you can also feel th pump running. It could be the circuit board potentiometer or the high limit thermistor, the microswitch assembly. or the external wiring.
bendan November 2007 |
check the water pump
if water pump is not working there will be hotwater but no clentral heating
ellison October 2007 |