Power source faulty — RUN LED OFF, TIMER LED flashes 1 time

What does 01 mean?

The unit detects a faulty power source or improper wiring of power/signal lines. This occurs if communication signals are not detected within 10 seconds after power-on.

• Faulty power source supply to the unit
• Improperly wired power cables and signal lines
• Faulty indoor or outdoor PCB

Click steps to track your progress.

1. 1

   Turn off the main power to the unit.

2. 2

   Verify the power source voltage is stable and within the specified range for your unit.

3. 3

   Carefully check all power source cables and signal lines for correct and secure wiring, ensuring no wires are loose or improperly connected.

4. 4

   If all wiring and power supply appear correct, the indoor or outdoor PCB may be faulty and require professional diagnosis.