Midea V6R VRF Series Service Manual page 119

V6R VRF 50Hz
Procedure
Number of indoor units set on outdoor
main PCB not same as actual number of
Some indoor units are powered off
After re-starting the ODUs and IDUs and
then waiting 2 minutes, an IDU displays
an E1 or FE error
Two or more indoor units are assigned
the same address
Setting the indoor units' addresses
uniquely resolves the error
Notes:
1. The number of indoor units can be set on switches ENC3 and S12 on the outdoor main PCB.
2. Indoor unit error code E1 indicates a communication error between indoor and master outdoor unit. Indoor unit error code FE indicates that an indoor unit
has not been assigned an address.
3. Indoor unit addresses can be checked and manually assigned using indoor unit remote/wired controllers. Alternatively, indoor unit addresses can be
automatically assigned by the master outdoor unit.
118
H7
1
indoor units
No
No
2
No
3
Yes
Change the setting on the PCB to be the
Yes
same as the actual number of indoor
Yes
Power on all indoor units
Refer to indoor unit troubleshooting
Yes
guide. Resolving the indoor unit error
resolves the outdoor unit error
No
Replace the outdoor main PCB
units
No