In tracing an electrical fault in my heating system, I've found that it only works when I short out the frost stat. Presumably, the frost stat should only close in extremely low temps and this is what I'm simulating. Of course, the system is then on even if the programmer is set to off.
When I remove the short from the frost stat, the heating system shuts down.
The boiler is in the garage and has a frost and a pipe stat alongside.
Can anyone advise
When I remove the short from the frost stat, the heating system shuts down.
The boiler is in the garage and has a frost and a pipe stat alongside.
Can anyone advise