Error 94 (9 Green, 4 Red Flashes) / 13 Flashes (Outdoor Unit) — Current trip / Over current error (permanent stoppage)

What does 94 mean?

The hydraulic unit's green LED flashes nine times and the red LED flashes four times, or the outdoor unit LED flashes 13 times. This signifies that the system has detected an excessive electrical current, leading to a protective shutdown.

• Loose or incorrect terminal connections in the control unit.
• Clogged outdoor heat exchanger restricting airflow.
• Malfunction of the outdoor fan motor.
• Failure of the compressor or Main/Inverter PCB.

Click steps to track your progress.

1. 1

   First, turn off the power to the heat pump system at the main breaker for 60 seconds, then restart it.

2. 2

   Check all terminal connections in the control unit for any looseness, disconnected wires, or incorrect wiring; correct as needed.

3. 3

   Inspect the outdoor heat exchanger for any obstructions, dirt, or debris blocking airflow and clean it thoroughly if clogged.

4. 4

   Check the outdoor fan motor for proper operation (ensure it spins freely) and replace if faulty (refer to 'Clear 18' for fan motor issues if applicable).

5. 5

   If the above checks don't resolve the issue, contact a qualified technician as it may indicate a compressor or inverter PCB failure.