IVT 09LR-N Service Manual page 40

12LRN
Problem Outdoor
symptom unit indi-
cation
(LED1)
Indoor and 11-time      Timer (Orange)
outdoor units

do not oper-
ate.
     Timer (Orange)

     Timer (Orange)

     Timer (Orange)

     Timer (Orange)


     Timer (Orange)


Indoor and 12-time      Timer (Orange)
outdoor units
 
do not oper-
ate.
Indoor unit Malfunc-
tion No.
Lamp Main Sub
11 0
  Operation (Red)
Plasmacluster
(Blue)
1
  Operation (Red)
Plasmacluster

(Blue)
2
  Operation (Red)
Plasmacluster

(Blue)
3
  Operation (Red)
Plasmacluster
 
(Blue)
4
  Operation (Red)
Plasmacluster
(Blue)
5
  Operation (Red)
Plasmacluster

(Blue)
12 0
Operation (Red)
Plasmacluster
(Blue)
Content of diagnosis
Main Sub
Outdoor unit Outdoor unit DC
DC fan fan rotation error
Outdoor unit DC
fan drive IC error
Outdoor unit DC
fan lock error
Detection error of
DC fan negative
rotation before
compressor is
driven
Detection error of
inverter current
for DC fan
Outdoor unit DC
fan open con-
nector error
Thermal Thermal fuse
fuse in ter- error in terminal
minal board board (for power
supply)
3 – 18
Check point
(1) Check connector (1) Correct the instal-
CN3 of the outdoor lation.
unit DC fan motor for
secure installation.
(2) Check the outdoor (2) Replace the out-
unit fan motor for door unit fan
proper rotation. motor.
(3) Check fuse FUSE5. (3) Replace the out-
door unit control
PCB assembly.
(4) Outdoor unit control (4) Replace the out-
PCB door unit control
PCB assembly.
(1) Check if the fan IPM (1) Replace the out-
terminal resistance door unit control
values are uniform. PCB assembly.
(2) Outdoor unit fan (2) Replace the out-
motor continuity door unit fan.
check.
(1) Check the outdoor (1) Replace the out-
unit fan motor for door unit control
proper rotation. PCB assembly.
(2) (1):Normal (2) Replace the out-
door unit fan.
(1) (Temporary stop for
DC fan circuit protec-
tion)
- (1) Replace the out-
door unit control
PCB assembly.
(1) Check connector (1) Correct the instal-
CN3 of the outdoor lation.
unit DC fan motor for
secure installation.
(2) (1):Normal (2) Replace the out-
door unit control
PCB assembly.
(1) Check the thermal (1) Replace terminal
fuse in terminal board for Power
board (for Power supply
supply)
(2) Check connector (2) Correct the instal-
CN5 of the outdoor lation.
unit.
(3) (1) (2):Normal (3) Replace the out-
door unit control
PCB assembly.
Action
-