HVAC thermostat does not get power
For an HVAC thermostat to work, it must be powered. If your thermostat is not getting power, you may have a problem with your circuit breaker.
One common reason that an HVAC thermostat would stop getting power is old electrical wiring. The wires can be poorly insulated and eventually break down due to age, which causes a short circuit. This will cause current to travel from one wire to another through the ground wire instead of flowing where it should go.
This is dangerous for any household electric appliance or heating system and may even start a fire if it’s not repaired quickly.
The hvac thermostat does not get power because it is out of range of the wireless signal. It could be that the wireless signal is too weak, or there is interference from a nearby wireless network.
If you are using a battery-operated thermostat, you may need to change the batteries.
The thermostat is not getting power. There are a couple o reasons why this can happen and some of these are pretty simple to fix.
This could be an issue with the electrical circuit in the house which requires an electrician. The thermostat may be off because it is not programmed for your lifestyle. You may need to set a schedule for when you want it to turn on, or you can add a vacation setting if you live somewhere and go away for more than one day.