No power to RC wire detected (Solved) 2023

No power to RC wire detected. Nest thermostats are the latest smart devices to manage the cooling and heating systems in the home through mobile phones.

These devices adjust the home temperature level according to our routines and automatically turn off the air conditioner when you leave the room by detecting the phone’s location.

But no electronic device is exceptional to become faulty due to unknown reasons, so if your Nest thermostat has stopped working and displays a “no power to RC wire detected” message, then don’t worry because it happens with many users, so don’t worry and read this post to learn the all possible causes and troubleshooting tips to clear this message.

If your thermostat device displays the no power to Rc wire detected, then you should check the air filter, HVAC fuse electric wiring, and tripped circuit breaker because if any of these become faulty and stop working, then this issue will come.

Read this complete article to get information about all the reasons that can make your Nest thermostat device not detect power to the Rc wire.

No power to RC wire detected

Nest thermostat devices are very popular and useful devices to install in a home to save power and energy and bill at the end of the month.

If your nest thermostat device is not working and displaying the message no power to RC wire detected, then it’s a serious issue, and you need to troubleshoot it immediately; then the device will not work, and it can affect you badly. Keep reading.

Check circuit breaker

Every power source has a circuit breaker to control the power. The circuit breaker turns itself off when there is an overload in the circuit.

HVAC has to work in hot summer due to hot weather; therefore, its circuit breaker is tripped too often as compared to the other seasons.

When the circuit breaker is tripped, then the air conditioner is also turned off. As a result, the ac system power supply is also cut to the nest thermostat.

The same is the case with the ac system fuse. The ac fuse blows away due to overload in summer.

Dirty drip pan

If nothing is wrong with the circuit breaker and fuse, but the thermostat is displaying an E73 error, then a dirty drip pan is also one of the main reasons for this issue.

The drip pan is installed under the air conditioner coils, so check the pan and make sure that there is no water or any clog in it.

There must be no water and clog in the drip pan and drain tubes; if you locate water or clog, clear it immediately to eliminate the E73 error.

Check your device wiring

When you install the Nest thermostat device in your home to save energy, then your electrical wiring connections must be proper and secure.

If the wiring or cable connections are loose, then your device will experience no power to the RC wire detected a problem.

It’s better to take the services of an experienced electrician, but if you are a good enough electrician, then you can also check your thermostat wiring.

Call Nest Support

Mostly, the above troubleshooting tips work to fix the E73 error. But, if any of the above steps do not work, then your last option is to call the Nest thermostat center.

Inform them of all the various troubleshooting steps you applied to fix the E73 error.

Conclusion

The bottom line of the article is if you have installed the nest thermostat device in the home to save energy in the home then make sure not to put an overload on the circuit.

Turn off the HVAC system when you are not in the room.

Hopefully, this guide helped you to fix the E73 error, and if not, then don’t feel shame to contact the nest thermostat center. Nest no power to rh wire