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error Honeywell

Error Code INTERNAL SENSOR ERROR

There is a failure of the sensor in the thermostat.

? What Causes This

Hardware failure of the internal temperature or humidity sensor.

✓ How to Fix It

  1. Power cycle the thermostat.
  2. Ensure the thermostat is in a stable environment without extreme temperatures.
  3. If the error persists, contact Honeywell customer support for service.

This error code appears in:

Honeywell T10 Smart Home Thermostat