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Just found your thread by accident. I've lived here 10 years with no problem from the FP715, which is controlling CH and HW on a Mitsubishi Ecodan ASHP. Then on 8th January 2021 - the day I resolved the poor CH running (Immersion not turned up fully, so system stuck on Legionella), I found I...

Oh right, so I got it wrong then :oops: So I need a 240 volt heat thermostat with an override instead?

I have a Fantasia ceiling fan in my lounge. I want a switch that will turn it on when the humidity in the room gets too close / sticky - so that my dogs will be cooled when I’m out. I believe that a humidity sensor would be better than a temperature sensor, as the humidity can be worse than...