6607 - No ACK error (M-NET Remote controller only)

What does 6607 mean?

The system failed to receive an acknowledgment (ACK) signal from an M-NET device, specifically when only an M-NET Remote controller is detected. This causes the air conditioning system to automatically stop operating.

• Communication timeout or lost signal.
• Faulty M-NET device or remote controller.
• Wiring issues on the M-NET communication bus.

Click steps to track your progress.

1. 1

   Note the 6607 code displayed on your remote controller.

2. 2

   Turn off the main power supply to the system at the circuit breaker.

3. 3

   Wait for 1 minute, then turn the main power supply back on.

4. 4

   If the error persists, contact a qualified service technician to check the M-NET communication and connected devices for proper operation.