How to Resolve City Multi VRF 6607 Communications Error

In this video, our Technical Trainer, Ben Bartle-Ross, takes you through how to solve a 6607 error.

6607 is the system explaining that it cannot see a device that has, or should have, been wired onto the M-Net communication line​.

Whenever the system creates a 6607 fault code, it will also provide a 3 digit address number with the fault​.

​The 3 digit address is the device that cannot be found or seen by the rest of the VRF system​. For example, 6607 001​ - the VRF system cannot see the Indoor Fan Coil 001.