Using a Nest thermostat is one of the most convenient ways to perfect the day-to-day schedule of your comfort system. This smart thermostat can recognize your preferences and automatically make improvements. But as you can expect, it won’t work correctly or at all if you see an error code appear. The specific error code offers useful information about the source of the problem, something a trained technician can use to offer solutions that much quicker.
Listed below are seven of the most likely error codes you could discover on your Nest thermostat. We’ll explain the basics of each error code along with how you could fix it and the projected cost to do so. Keep in mind that while the investment will ultimately be dependent on the specific Nest model, you can expect to pay between $75-$200 for repairs. This should include things like travel and labor costs on top of any specific hardware needed to wrap up repairs.
e298 – Critical
This critical error code is limited to new models of the Nest thermostat and is displayed when the power is detached from the system. Since this is a critical power error, the thermostat will swap to the backup battery system. The error message will continue to be displayed until the problem is resolved.
Losing power to your Nest thermostat can be for a number of reasons. The wiring might have disconnected or become damaged, or a disconnection may have appeared further along in the electrical system. This may be the circuit breaker, fuse box or system switch. A professional technician should inspect electrical connections and wiring until they find the source of the problem.
e294 – Critical
Critical error code e294 shows up when your Nest thermostat’s wiring needs to be reconfigured. More specifically, you’ll need the technician to reconfigure the R wire. They’ll first complete a factory reset of your thermostat to make sure it’s not simply a software error. If that doesn’t work, they’ll review the wiring diagram of the thermostat and start checking connectors.
They’ll disconnect the power and slowly check each wire, seeing to it that they are fully placed into the connector with the proper amount of exposed copper. After they pinpoint the damaged connector, it can be exchanged for a new one.
e195 – Critical
This critical error code can show up when the weather outside is severely hot. The HVAC system can shut down and stop delivering power to your