UH — Current sensor trouble (Primary current error)

What does UH mean?

This error indicates a problem with the primary current sensor, which monitors the main electrical current flowing through the outdoor unit. An error here can lead to system shutdown to prevent electrical damage.

• Faulty primary current sensor.
• Loose or damaged wiring to the current sensor.
• Control board malfunction.
• External electrical disturbance or power surge.

Click steps to track your progress.

1. 1

   Turn off the main power to the outdoor unit by switching off its dedicated circuit breaker.

2. 2

   Inspect the current sensor and its wiring connections for any visible damage, charring, or looseness.

3. 3

   Ensure the power supply to the unit is stable and not experiencing voltage fluctuations or surges.

4. 4

   Check the main electrical panel for any tripped breakers related to the unit.

5. 5

   A qualified technician is required to diagnose and repair issues with the current sensor or its related circuitry.