Error 154 — RPM feedback error of indoor unit

What does 154 mean?

The indoor unit's main fan motor is not providing correct RPM (rotations per minute) feedback. This suggests a problem with the fan's operation or its speed sensing mechanism.

• Obstruction preventing the fan from spinning
• Faulty indoor fan motor
• Problem with the RPM feedback sensor
• Wiring issue to the fan motor

Click steps to track your progress.

1. 1

   Shut off power to the indoor unit at the circuit breaker.

2. 2

   Visually inspect the indoor fan for any foreign objects that might be hindering its rotation.

3. 3

   Manually try to spin the fan blades to check for resistance or grinding sounds.

4. 4

   Check all electrical connections to the indoor fan motor for secure fit.

5. 5

   If the fan motor or its feedback sensor is faulty, professional repair or replacement will be necessary.