Midea MV5-X252W/V2GN1 - 4.12.4 Procedure

V5 X VRF 50/60Hz
201608 77
Part 5 - Diagnosis and Troubleshooting
Procedure 4.12.4
H7
Number of indoor units set on main PCB
not same as actual number of indoor
units
1
Yes
Change the setting on the PCB to be the
same as the actual number of indoor
units
No
Some indoor units are powered off
Yes
Power on all indoor units
No
After re-starting the ODUs and IDUs and
then waiting 2 minutes, an IDU displays
an E1 or FE error
2
Yes
Refer to indoor unit troubleshooting
guide. Resolving the indoor unit error
resolves the outdoor unit error
No
Two or more indoor units are assigned
the same address
3
No
Yes
Setting the indoor units’ addresses
uniquely resolves the error
No
Replace outdoor main PCB
Notes:
1. The number of indoor units can be set on switches EN3 and S12 on the main PCB. Refer to Part 4, 1.1 “PCB Switches and Switch Settings”.
2. Indoor unit error code E1 indicates a communication error between indoor and master 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. Auto-addressing mode is selected by setting switch S6 on the main PCB. Refer to Part 4, 1.1 “PCB
Switches and Switch Settings”.