IVT 09LR-N Service Manual page 42

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