Hi All,
I am hope someone can help with this.
I have a Main Combi 24 he. Problem is heating is always on even with selector switch on water only.
I have replaced the diverter valve and no change. Then replaced the pcb, still no change. I have also disconnected the thermostat as a precaution. still no change.
As soon as you turn the dial from off to hot water only, boiler fires up instantly and rads heat up. This occurs even without hot tap demand.
Has anyone come across this before?
Any advice would be apreciated.
Thanks!
I am hope someone can help with this.
I have a Main Combi 24 he. Problem is heating is always on even with selector switch on water only.
I have replaced the diverter valve and no change. Then replaced the pcb, still no change. I have also disconnected the thermostat as a precaution. still no change.
As soon as you turn the dial from off to hot water only, boiler fires up instantly and rads heat up. This occurs even without hot tap demand.
Has anyone come across this before?
Any advice would be apreciated.
Thanks!