Why is my emergency heat light on, but my thermostat is not set for emergency heat?
FAQ , Thermostats , Troubleshooting Modified: March 19, 2026
The emergency heat light on your thermostat may be on due to a few reasons. it could be that your thermostat is set to emergency heat mode, or your heat pump is not able to keep up with the heating demand, causing the auxiliary heat (second stage) to kick in.
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