This is a very strange fault
Central heating system works fine gets upto temprature but fan & pump constantly keeps on running even when not calling.
the pump & fan should go to standby untill calling for heat
P c b thermister ch mancanical slot in timer changed
still will not shut of many thanks inadvance
Central heating system works fine gets upto temprature but fan & pump constantly keeps on running even when not calling.
the pump & fan should go to standby untill calling for heat
P c b thermister ch mancanical slot in timer changed
still will not shut of many thanks inadvance