What we did
When an HVAC unit will not turn on, the problem is not always the equipment itself. That turned out to be the case at this commercial property in Danville in May, where the unit failed to start and the thermostat became the focus of our investigation.
We started by manually bypassing a connection, and the system worked properly when we did. That told us the unit was capable of running and pointed the investigation toward the controls. Digging further, we found that the Nest Thermostat was not receiving power on the green wire. We addressed the issue to restore proper functionality, and the job was completed.
Smart thermostats like the Nest depend on getting the right signals and power through their wiring. When one connection is not doing its job, the result can look like a much bigger failure than it really is. Testing the system step by step, rather than assuming the unit is at fault, helps us find the actual source of the problem. For Kentucky businesses, that kind of careful troubleshooting can save time and avoid replacing parts that do not need replacing. If your system will not turn on, a thermostat check is one of the first things we look at.
