The Efficient Home Forum

I have started to get regular 'Battery low, hot water sensor' warnings on my controller but on checking my HW cylinder sensor it is not battery powered just what appears to be a bi-metallic strip. Are there batteries elsewhere or is this a spurious warning gremlin? If the latter is there anyway of ...

Despite battery levels being OK (2 bar+) I am getting daily warnings from different HR92s that the battery is low for both sensor and actuator followed almost exactly an hour later, by an associated Restore indication. Distance from the controller does not seem relevant as the warnings come from ...

I hve U/f heating in one zone whose pump is controlled via a BDR91relay box and a Y97RF single zone thermostat. Unfortunately yesterday I managed to dump all my zone programming (finger trouble!). Whereas I have managed to rebind and reinstate 11 of my 12 zones I do not seem to be able to rebind the ...

We are planning a complete Evohome sytem for our relatively large (6 bedroom) house, 2 storeys plus cellar basement and loft. We want to have the programmer in the kitchen on the ground floor but need to know the maximum operating range between the programmer and HR92 TRVs. Is there a way of testing ...