TIMER light 4-time flash (RUN light ON) - Outdoor temperature sensor error

What does TIMER light 4-time flash (RUN light ON) mean?

The outdoor unit's temperature sensor is faulty or disconnected. This sensor provides crucial data for the system's operation.

• Broken wire for the outdoor temperature sensor.
• Poor connection at the outdoor sensor's connector.

Click steps to track your progress.

1. 1

   Turn off the air conditioner at the main power supply and wait 5 minutes.

2. 2

   Visually inspect the outdoor unit's wiring, if safely accessible, for any obvious damage or loose connections.

3. 3

   If the problem persists, contact a qualified technician, as the sensor or wiring may need professional inspection and repair.