Hi,I have a potterton suprema60,I have no hotwater if CH is off,but a.s.a CH turns on,HW start working,BOTH Valves works,it's just the valve for HW that not start the pump,I think I've got some air in the system but don't know where looking for the vent pipe or how to vent the system?
NO HOTWATER
- Thread starter shah
- Start date
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What you describe could be S plan control. Domestic hot water valve opens because water heats when heating zone valve calls for boiler and pump. Therefore connection loose or microswitch inside dhw zone valve not making. I have sometimes found water froma leak elsewhere has got at that part of the zone valve head and damaged the microswitch. Just change the head if that is so.
If I have misread your system above is not likely to be relevant.
If I have misread your system above is not likely to be relevant.
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