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  1. C

    Nest install with Potterton 2002 and 4 wire Honeywell thermostat

    Here are the photos of all the wiring
  2. C

    Nest install with Potterton 2002 and 4 wire Honeywell thermostat

    Possibly been answered before, but going to install a nest learning system and I am wondering about the thermostat. I want to remove and use the existing wires for the nest - my question is, I have 3 wires and an Earth at the thermostat. Do I remove all four wires from the thermostat at the...
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