I had to turn read more. There is a breaker box attached to it on the wall outside.
Nest Thermostat No Power Connecting Common Wire On Furnace
No power to nest thermostat. When x w1 or w2 is an aux wire. Another reason why theres no power to the thermostat could be due to a bad transformer or even a faulty wire running from the thermostat to the transformer. I have a bryant model 561cj060 h ac. Turn off power to your system at the breaker box or system switch. Remove the wire in the w1 terminal straighten it and put it back in as far as it will go. Nails pests like mice and rats and corrosion can all be a contributing factor.
Some heat pump installations may have the auxiliary heat connection labelled as x w1 or w2 on the thermostat. You should verify that the x wire on the old thermostat is not a common wire. Grip the metal ring of your thermostat and pull it gently towards you away from the wall. If your system works as it should with your old thermostat your nest thermostat may be damaged and needs to be replaced. Your thermostat should pop. I just installed a nest thermostat.
If there is a common wire installed the nest thermostat will not power share. You may need to. Turn off the power to your heating and cooling system at your breaker. The thermostat says there is no power to the rc wire.
Gallery of No Power To Nest Thermostat
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