Hitachi Error Codes & Troubleshooting

Power cycle system immediately.

Check connections. Clean sensor.

Check electrical supply. Verify power.

Check motor power and operation.

Professional service for leak detection.

Shut down. Check condenser.

Clean and check wiring.

Check power and connections.

Professional evacuation and recharge.

Cool for 30 mins. Check airflow.

Check cable. Power cycle.

Replace filter immediately.

Clear drain line immediately.

Check outdoor coil ice.

Select correct mode (COOL/HEAT).

Refrigeration service required.

Check breaker and wiring.

Defrost mode or COOL mode.

Replace batteries. Check signal.

Professional inspection recommended.