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  1. I

    HELP....No mid position on Honeywell 4073A

    Thanks for your time I was thinking about the tank stat but will also check the programmer Ian
  2. I

    HELP....No mid position on Honeywell 4073A

    Right.... Heating works fine...... Water works fine... But if the boiler calls for water when the heating is on, the water does not heat up. Basically we have to turn the heating down for the water to warm up. I have check the mid position valve and it seems that I am not loosing the 240V...
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