I am having problems with my 3 way switchmaster vaulve sticking and it keep knocking the heating off have been told it is obsolete so need replacement also need hot water tank thermostat but the guy who is going to do it appears to be having a prob getting the wiring diagram for the replacement valve any ideas where I can get the wiring diagram to get this problem sorted out.I think it has to be replaced with a honeywell system Annie
switchmaster
- Thread starter batty1954
- Start date
DIYnot Local
Staff member
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