Toshiba HFC R407C Service Manual page 52

Diagnostic procedure for check code
Check code
[98]
Central management address set-up fault
Is the wiring connection of
communication cables to X,Y normal?
Yes
Is [98] displayed only on the
central controller?
Yes
Is [97] displayed only on the
central controller?
No
Check the central controller.
If defective, replace.
52
Troubleshooting
No
No
Is there duplication of
network addresses?
Check indoor PC board.
If defective, replace.
Yes
Operation cause
1. Miswiring of XY communication cables.
2. Duplicated network addresses.
3. Indoor PC board error, central controller error.
Yes
Check duplication of network addresses.
No
Check connection of wiring.
Check No. of connected central
controllers to 1 unit.