IVT 09LR-N - Page 42

12LRN
3 – 20
Indoor unit
operates.
Outdoor unit
does not
operate.
Lighting
or OFF
Timer (Orange) 18 0 Wiring
between
units
Serial short-cir-
cuit
(1) Check the wiring
between units.
(1) Correct the wiring.
Operation (Red)
Plasmacluster
(Blue)
Indoor and
outdoor units
do not oper-
ate.
Lighting
or OFF
Timer (Orange) 1 Serial erroneous
wiring
(1) Check the wiring
between units.
(1) Correct the wiring.
Operation (Red)

Plasmacluster
(Blue)
Indoor and
outdoor units
do not oper-
ate.
Normal
blinking
or OFF
Timer (Orange) 19 0 Indoor unit
fan
Indoor unit fan
error
(1) Check the indoor fan
motor for proper
rotating operation.
(Check fan lock.)
(1) Replace the indoor
fan motor.
Operation (Red)
Plasmacluster
(Blue)
(2) Check the lead wire
of the indoor fan
motor for open-cir-
cuit.
(2) Replace the indoor
fan motor.
(3) Check connector of
the indoor unit fan
motor for secure
installation.
(3) Correct the instal-
lation of the indoor
fan motor connec-
tor.
(4) (1) (2) (3):Normal (4) Replace the indoor
unit control PCB.
Indoor and
outdoor units
do not oper-
ate.
Normal
blinking
or OFF
Timer (Orange) 20 0 Indoor unit
control PCB
EEPROM data
error
(1) (EEPROM read data
error)
(1) Replace the indoor
unit control PCB.
 Operation (Red)
Plasmacluster
(Blue)
Problem
symptom
Outdoor
unit indi-
cation
(LED1)
Indoor unit Malfunc-
tion No.
Content of diagnosis Check point Action
Lamp Main Sub Main Sub