Current cut error — RUN LED flashes 5 times, TIMER LED flashes 1 time

What does 51 mean?

The compressor has stopped due to a 'current cut', potentially after failing to start multiple times in succession. This suggests problems with compressor wiring, the power transistor, or the compressor itself.

• Compressor start failure (multiple times)
• Compressor wiring is disconnected or damaged
• Damaged power transistor
• Defective power source construction
• Faulty outdoor PCB or compressor

Click steps to track your progress.

1. 1

   Turn off the main power to the unit before inspecting.

2. 2

   Inspect all compressor wiring connections to ensure they are secure, not disconnected, and free from damage.

3. 3

   Verify the integrity of the power source construction supplying the unit.

4. 4

   If connections and power appear sound, the power transistor, compressor, or outdoor PCB may be faulty and require professional assessment.