nest 3rd generation thermostat replacement

  1. C

    Myson Thermostat Mrt1 and Nest E Thermostat replacement

    Hi Looking for advice on how to replace and label the wires on the Myson MRT1 Thermostat to wire on a Nest 3rd generation thermostat. Looks like 3 wires as I think the brown at T3/4 snakes around back of grey wire to T1. Thanks in advance
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