H6 - DC fan error

What does H6 mean?

The main board has not received a signal from the outdoor fan within 30 seconds of initiating the fan run command. This indicates a problem with the outdoor fan. The ODU main board LED displays this error.

• Outdoor fan wiring terminal is not correctly connected to the main board
• Outdoor fan is damaged
• Outdoor fan software is incorrect (e.g., after replacement)

Click steps to track your progress.

1. 1

   Check if the control wire of the outdoor fan motor is correctly connected to the outdoor main board.

2. 2

   Inspect the outdoor fan motor for damage.

3. 3

   Replace the outdoor fan motor if it is damaged or malfunctioning.

4. 4

   Ensure the outdoor fan software is correct, especially if the fan was recently replaced.

5. 5

   Replace the outdoor main board if the issue persists after checking the fan and its connections.