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  1. H

    New heating system 'hunting' and cannot seem to stop this

    Really grateful for all your time and help on this. The heating upstairs has been done separately due to the floor space of the house apparently and we have a separate thermostat for the 'living' area which is downstairs and the landing. Well this is what we were told although the radiator on...
  2. H

    New heating system 'hunting' and cannot seem to stop this

    What a great help, thanks very much. You have given me more help than all the plumbers we have seen so far. What if I set the setting to ZERO (0)? Would this be bad then? The thermostat is in a bedroom as it runs the heating for the bedrooms only so my theory was that if this setting...
  3. H

    New heating system 'hunting' and cannot seem to stop this

    There is a setting within the 907 that allows the Proportional Band Width to be changed from between 0 to 3 degrees? What exactly does this do? It is currently set at 1.5 so does this mean it will turn the heating on within 1.5 degrees of the required temperature? Cheers.
  4. H

    New heating system 'hunting' and cannot seem to stop this

    The 907 is clicking on and off with the little flame symbol appearing which turns the boiler on and then off again. I am worried all this is going to harm the boiler? Cheers again for the help.
  5. H

    New heating system 'hunting' and cannot seem to stop this

    That makes perfect sense although it turns the boiler on again a few minutes after turning the boiler off? I would have thought that once it says 18.5 it would leave it like that until it drops back below 18.5. Must be being thick? Cheers.
  6. H

    New heating system 'hunting' and cannot seem to stop this

    We have a new house with a CM907 controlled heating system. The installers have been back a number of time but the boiler still turns on and off repeatedly. The CM907 even says that the room temperature is 18.5 degrees and the target temperature is 19.0 degrees but it still switched the boiler...
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