UF - Compressor over current (start-up locked) cut off

What does UF-1 mean?

The system detected excessive current drawn by the compressor during startup, causing a safety shutdown. This typically means the compressor motor is unable to begin operating.

• Compressor locked rotor.
• Faulty start components (e.g., capacitor, relay).
• Insufficient voltage supply.

Click steps to track your progress.

1. 1

   Turn off the main power to the air conditioning system at the circuit breaker.

2. 2

   Wait for at least 30 seconds for the system to fully discharge and reset.

3. 3

   Restore power and attempt to restart the unit.

4. 4

   If the issue persists, contact a qualified HVAC technician to inspect the compressor and its starting components.