No Power To Rc Wire Detected Nest - This occurs mainly due to extremely hot temperatures, burnt fuse, low voltage to the rc wire,. Try running your old thermostat with the batteries removed. If it doesn't power on, your c wire isn't connected at the air handler. Did you ever find out the problem? A nest e24 error means โno power to the rh wire has been detectedโ. Such an indication will appear when the heating system or the actual thermostat is not receiving power. In some cases, the thermostat may display an error message indicating that there is no power to the rc wire. This error message can be caused by a number of different issues,. The e73 error on your nest thermostat indicates that there is no power detected to the rc wire.
This occurs mainly due to extremely hot temperatures, burnt fuse, low voltage to the rc wire,. Try running your old thermostat with the batteries removed. If it doesn't power on, your c wire isn't connected at the air handler. Did you ever find out the problem?
