To recap,
When my programmer is switched off at both the heating and hot water buttons the boiler will fire up on its own. The only way I can turn the boiler off is to turn the cylinder thermostat down to near zero.
What I have determined from this thread is that the dhw switch within the programmer is stuck on.
When my programmer is switched off at both the heating and hot water buttons the boiler will fire up on its own. The only way I can turn the boiler off is to turn the cylinder thermostat down to near zero.
What I have determined from this thread is that the dhw switch within the programmer is stuck on.