Toshiba MMU-P0121H Service Manual page 76

Check code
[96]
Consistency detection of indoor
and outdoor addresses
Is wiring connection
to communication cable
P.Q normal?
YES
Is communication cable
connected to another
outdoor unit incorrectly?
NO
Is No.of indoor units connected
to outdoor unit normal?
YES
Is communication
cable connected to the
central remote controller?
YES
Check interface
P.C. board of outdoor
Defective Replacement
1. Connection error of communication cable (PQ) between
indoor and outdoor
2. Abnormal No. of connected indoor units
3. Wiring connection error of central management remote
controller
NO
YES
NO
NO
3-73
Operation cause
Modify connection of wiring.
Modify communication cable.