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by MrEnergySaver
Sat Mar 20, 2010 12:09 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Help with changing thermostat
Replies: 2
Views: 2997

I agree. The old thermostat will have had and earth, a live in from the programmer, a switched live out to the valve and a neutral. This is because it is a mechanical thermostat and requires the anticipator for accuracy. The digital themostats only have two terminals, live in and switched live out. ...
by MrEnergySaver
Fri Mar 19, 2010 11:58 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: C/H Boiler comes on regardless of programmer and thermostat
Replies: 3
Views: 6014

This sounds like you either have a frost thermostat that is switched on (not likely, as the weather hs become warmer), or your wireless room thermostat has lost its binding (therefore it is not controlling the boiler). Because you have lost your Boiler Interlock, the boiler cannot turn off until it ...
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