Using a Nest thermostat is one of the most convenient ways to optimize the daily schedule of your heating and cooling. This smart thermostat can be taught your preferences and automatically make improvements. But as you might expect, it won’t work correctly or at all if you see an error code on the display. The precise error code offers useful information about the root of the problem, something a professional technician can use to offer solutions that much quicker.
Let’s consider seven of the most likely error codes you might find on your Nest thermostat. We’ll walk you through the basics of each error code as well as how you could fix it and the approximate cost to do so. Keep in mind that while the investment will ultimately hinge on the specific Nest model, you can expect to pay between $75-$200 for repairs. This should include things like travel and labor costs along with any specific parts required to finish repairs.
e298 – Critical
This critical error code is limited to new models of the Nest thermostat and shows up when the power is disconnected from the system. Because this is a critical power error, the thermostat will change to the backup battery system. The error message will remain on the screen until the issue is fixed.
Losing power to your Nest thermostat can be for several reasons. The wiring may have disconnected or become damaged, or a disconnection might have happened further along in the electrical system. This may be the circuit breaker, fuse box or system switch. A professional technician will inspect electrical connections and wiring until they locate the root of the problem.
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