IVT GS-XP12HR-N Service Manual page 24

: Flashes in 2-sec intervals (normal),
Indication by operation lamp on indoor unit
Indication by
Status of
LED1 on
indoor/outdoor
Lighting pattern at the time of timer lamp lighting
outdoor unit
units
*2
Indoor/outdoor
units in
complete
shutdown
Indoor/outdoor
units in
operation
Indoor/outdoor
units in
operation
Indoor/outdoor
units in
operation
Malfunction indications due to erroneous wiring during air conditioner installation
Inter-unit wiring
error mode
Indoor Outdoor
unit unit
1 1
2 2
3 3
Indoor Outdoor
unit unit
1 1
2 2
3 3
Indoor Outdoor
unit unit
1 1
2 2
3 3
3) In addition to those described above, the following error, which does not result in a complete shutdown, is notified by the flashing LED on the
indoor unit.
Malfunction
Serial open-circuit error
: On, : Off, : Flashes 3 times in 0.2-sec intervals
(When LED1 on the outdoor unit flashes in 2-sec intervals, the outdoor unit is in normal condition.)
Malfunction No.
Main Sub-
Off for 5 seconds
category category
Operation lamp
(RED)
19
Cluster lamp
(BLUE)
Operation lamp
(RED)
20
Cluster lamp
(BLUE)
Operation lamp
(RED) 22
Cluster lamp
(BLUE)
Operation lamp
(RED)
Cluster lamp
(BLUE)
Operation lamp
(RED)
Cluster lamp
(BLUE)
Operation lamp
(RED)
30
Cluster lamp
(BLUE)
Symptom
Indoor unit relay Turns On momentarily,
then turns Off.
Malfunction diagnosis display "18-1"
Indoor unit relay Relays turns Off after
about 30 sec.
Malfunction diagnosis display None
(Displays "18-0" when malfunction code
is called out.)
Indoor unit relay Relays turns Off after
about 30 sec.
Malfunction diagnosis display None
(Displays "18-0" when malfunction code
is called out.)
Flashing LED (
Operation Timer
(The Operation and Cluster LED conditions vary based on the equipment operation.)
Content of diagnosis
Main
Sub-category
category
Indoor unit fan error (1) Check the indoor fan motor for proper
Indoor unit
-0
rotating operation.
fan
(Check fan lock.)
(2) Check the lead wire of the indoor fan
motor for open-circuit.
(3) Check CN1 of the indoor unit fan motor
for secure installation.
(4) No abnormality found in above
inspections (1) through (3).
EEPROM data error
(EEPROM read data error)
Indoor unit
-0
control PCB
Cluster voltage error (1) Check if the cluster feedback voltage is
Cluster circuit
-0
proper (0.1 V to 4.9 V).
(2) Check CN5 of the cluster for secure
installation.
-1
-2
Drain pump Drain pump unit error (1) Check connector CN2 and CN10.
-0
unit
Inter-unit wiring
error mode
Indoor Outdoor
unit unit
1 1
2 2
3 3
Indoor Outdoor
unit unit
1 1
2 2
3 3
: flashing in 1-sec intervals)
Cluster (blue) Cluster (green)
3 – 3
Inspection location/method
(1) Replace the indoor fan motor.
(2) Replace the indoor fan motor.
(3) Correct the installation of CN1 of
the indoor fan motor.
(4) Replace the indoor unit control
PCB.
(1) Replace the indoor unit control
PCB.
(1) Replace the cluster unit.
(2) Correctly install CN5 of the
cluster.
(1) Replace the Drain pump unit unit.
(2) Re-insertion of CN2 and CN10.
Symptom
Indoor unit relay Turns On momentarily,
then turns Off.
Malfunction diagnosis display "18-1"
Indoor unit relay Turns On momentarily,
then turns Off.
Malfunction diagnosis display "18-1"
Malfunction No. (main category)
17 Serial open-circuit error
GSXP12HRN
Remedy