UA - Compressor over current (Terminal relay operation) in outdoor unit

What does UA mean?

This code signifies that the outdoor unit's compressor has drawn excessive current, activating the terminal relay as a protective measure.

• Overload on the compressor.
• Faulty terminal relay.
• Electrical supply issues to the compressor.
• Compressor attempting to start against high pressure.

Click steps to track your progress.

1. 1

   Turn off the main power to the AC system at the circuit breaker and allow the unit to rest for some time.

2. 2

   Check for any obvious obstructions around the outdoor unit that might restrict airflow.

3. 3

   If the problem continues, contact a qualified HVAC technician to inspect the compressor, terminal relay, and electrical connections.

4. 4

   Avoid continuous attempts to restart the unit, as this may cause further damage.