Mitsubishi Electric CITY MULTI PURY-200M-B-BM. BSG Service Handbook page 32

[ V Troubleshooting ]
Error
Error dis-
source ad-
play
dress
Network Network
remote remote
controller controller
(NR) (NR)
Detection
method
No ac- (1) Same causes as (1) - (5) for sys-
knowl- tem with one outdoor unit
edgement (2) Disconnection or short circuit of
(ACK) at IC the transmission line for the out-
transmis- door unit on the terminal block
sion to NR for centralized control line con-
nection (TB7)
(3) When multiple outdoor units are
connected and the power source
of one of the outdoor units has
been shut off.
(4) The male power supply connec-
tor of the outdoor unit is not con-
nected to the female power
supply switch connector (CN40).
(5) The male power supply connec-
tors on 2 or more outdoor units
are connected to the female
power supply switch connector
(CN40) for centralized control.
If an error occurs, after the unit runs
normally once, the following causes
may be considered.
Total capacity error (7100)
Capacity code error (7101)
Error in the number of con-
nected units (7102)
Address setting error (7105)
Cause
1) Turn off the power source of the outdoor
2) Check the causes of (1) - (5). If the
3) Same cause as that for indoor unit de-
- 31 -
Check method and remedy
unit for 5 or more minutes, and turn it on
again. If the error is accidental, it will run
normally.If not, check the cause 2).
cause is found, correct it. If no cause is
found, check 3).
scribed in 3)
If the error is accidental, it will run nor-
mally. If not, check the cause (1) - (5).