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Thermostat setting too high.

Compressor and Outdoor Fan Will Not Start - Thermostat set too high (for cooling).

Bryant · Comfort Alert Diagnostic Module

What does Thermostat setting too high. mean?

The thermostat is set to a temperature higher than the current indoor temperature, so it does not call for cooling. The compressor and fan will not start in this mode.

Common Causes

  • Thermostat set incorrectly for desired cooling.
  • Accidental adjustment of thermostat setting.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the thermostat display to confirm the set mode (Cooling) and setpoint.

  2. 2

    Lower the thermostat setpoint to a temperature at least 3-5 degrees below the current room temperature.

  3. 3

    Wait a few minutes to see if the unit begins to operate.

Browse all codes in this manual (55)
Verified technical data. Last updated: April 2026

Related Faults

ALERT LED * flashes Yellow (misreported)Yellow ALERT LED * flashes (misreported) — Welded Contactor checkALERT LED 2 flashes YellowYellow ALERT LED 2 flashes — System pressure trip or compressor overloadALERT LED 3 flashes YellowYellow ALERT LED 3 flashes — Compressor short cycling
Source: Bryant Comfort Alert Diagnostic Module
Open Manual (Page 33)Search more codes in this manual