E320 (Red ON, Green Blink, Yellow OFF) — OLP sensor error

What does E320 mean?

The outdoor unit's PCB LED displays E320 when an open or short circuit is detected in the Overload Protection (OLP) sensor. This sensor is crucial for protecting the compressor from excessive loads.

• Damaged OLP sensor
• Loose or faulty sensor wiring connection
• Faulty outdoor PCB

Click steps to track your progress.

1. 1

   Turn off the main power to the outdoor unit at the circuit breaker.

2. 2

   Visually inspect the OLP sensor and its wiring for any signs of damage or loose connections.

3. 3

   Restore power to the unit. If the error persists, contact a qualified technician to inspect or replace the sensor.