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GSXP12HRN
: 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
5 times
units in
complete
shutdown
Indoor/outdoor
6 times
units in
complete
shutdown
Indoor/outdoor
7 times
units in
complete
shutdown
Indoor/outdoor
9 times
units in
complete
shutdown
Indoor unit in
operation
Outdoor unit in
temporary stop
Indoor/outdoor
11 times
units in
complete
shutdown
Indoor/outdoor
13 times
units in
complete
shutdown
Indoor/outdoor
14 times
units in
complete
shutdown
Indoor unit in
operation
Outdoor unit in
complete
shutdown
: 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)
5
Cluster lamp
(BLUE)
Operation lamp
(RED)
Cluster lamp
(BLUE)
Operation lamp
(RED)
Cluster lamp
(BLUE)
Operation lamp
(RED)
Cluster lamp
(BLUE)
Operation lamp
(RED)
Cluster lamp
(BLUE)
Operation lamp
(RED)
6
Cluster lamp
(BLUE)
Operation lamp
(RED)
Cluster lamp
(BLUE)
Operation lamp
(RED)
7
Cluster lamp
(BLUE)
Operation lamp
(RED)
Cluster lamp
(BLUE)
Operation lamp
(RED)
Cluster lamp
(BLUE)
Operation lamp
(RED)
Cluster lamp
(BLUE)
Operation lamp
(RED)
9
Cluster lamp
(BLUE)
Operation lamp
(RED)
Cluster lamp
(BLUE)
Operation lamp
11
(RED)
Cluster lamp
(BLUE)
Operation lamp
(RED)
13
Cluster lamp
(BLUE)
Operation lamp
(RED)
Cluster lamp
(BLUE)
Operation lamp
(RED)
14
Cluster lamp
(BLUE)
Operation lamp
(RED)
Cluster lamp
(BLUE)
Operation lamp
17
(RED)
Cluster lamp
(BLUE)
Operation lamp
(RED)
Cluster lamp
(BLUE)
Operation lamp
(RED)
18
Cluster lamp
(BLUE)
Operation lamp
(RED)
Cluster lamp
(BLUE)
Content of diagnosis
Main
Sub-category
category
Heat exchanger
(1) Check connector CN8 of the outdoor unit
Outdoor unit
-0
thermistor open-circuit
thermistor for secure installation.
thermistor
error
(2) Measure resistance of outdoor
open-circuit
thermistors TH1 to TH5.
Outside temperature
(3) Check the lead wires of thermistors TH1
-1
thermistor open-circuit
through TH5 on the outdoor unit control
error
PCB for open-circuit.
Suction thermistor
(4) No abnormality found in above
-2
open-circuit error
inspections (1) through (3).
2-way valve thermistor
-3
open-circuit error
-4
Discharge thermistor
open-circuit error
Outdoor unit
(1) IPM continuity check
DC overcurrent error
-0
DC
(2) Check the IPM and heat sink for secure
installation.
(3) Check the outdoor unit fan motor for
proper rotation.
(4) No abnormality found in above
inspections (1) through (3).
(5) No abnormality found in above
inspections (1) through (4).
IPM pin level error
Check the IPM is attached correctly to the
-1
outdoor unit control PWB
AC overcurrent error
(1) Check the outdoor unit air outlet for
Outdoor unit
-0
blockage.
AC
(2) Check the outdoor unit fan for proper
rotation.
-1
AC overcurrent error in
(1) IPM continuity check
OFF status
AC maximum current
(1) Check the outdoor unit air outlet for
-2
error
blockage.
(2) Check the outdoor unit fan for proper
rotation.
AC current deficiency
(1) Check if there is an open-circuit in the
-3
error
secondary winding of the current
transformer of the outdoor unit control
PCB.
(2) Check if the refrigerant volume is
abnormally low.
(3) Check if the refrigerant flows properly.
Outdoor unit
Thermistor installation
(1) Check to make sure outdoor unit
-0
cooling/heati
error or 4-way valve
thermistor TH2 (heat exchanger) TH5 (2-
ng switchover
error
way valve) are installed in correct
positions.
(2) Measure resistance of thermistors TH1
and TH5.
(3) Check the 4-way valve for proper
operation.
(4) No abnormality found in above
inspections (1) through (3).
Torque control error
(1) Check if the refrigerant volume is
-3
abnormally low.
(2) Check the 4-way valve for proper
operation.
(3) Check to see if the compressor type is
correct.
Outdoor unit
(1) Check connector CN3 of the outdoor unit
Outdoor unit DC fan
-0
DC fan motor for secure installation.
DC fan
rotation error
(2) Check the outdoor unit fan motor for
proper rotation.
(3) Check fuse FU3.
(4) Outdoor unit control PCB
DC
Compressor startup
(1) Check the colors (red, white, orange) of
-0
compressor
the compressor cords for proper
error
connection. (PCB side, compressor side)
Compressor rotation
-1
(2) Check if the IPM terminal resistance
error
values are uniform.
(3) No abnormality found in above
inspections (1) and (2).
(4) No abnormality found in above
inspections (1) through (3).
PAM overvoltage error
(1) Check the AC power supply voltage for
Outdoor unit
-0
fluctuation.
active filter
(2) No abnormality found in above inspection
(1).
(1) Check the PAM clock for proper input.
-1
PAM clock error
Serial open-circuit
(1) Check the wires between units.
Wires
-0
(2) Check voltage between Nos. 1 and 2 on
between
the indoor/outdoor unit terminal boards.
units
Outdoor unit does not
(1) Check the wires between units.
(2) Check the outdoor unit fuse.
turn on due to
erroneous wiring
(3) Check 15-V, 13-V and 5-V voltages on
the PCB.
Check resistance between IPM terminals.
(4) Check pins No. 5 and 8 of connector
CN3A of the outdoor unit fan motor for
short-circuit.
(5) Outdoor unit control PCB
(1) Check the wires between units.
Wires
Serial short-circuit
-0
between
units
Serial erroneous wiring
(1) Check the wires between units.
-1
3 – 2
Inspection location/method
(1) Correct the installation.
(2) Replace the outdoor unit
thermistor assembly.
(3) Replace the outdoor unit
thermistor assembly.
(4) Replace the outdoor unit control
PCB assembly.
(1) Replace the outdoor unit control
PCB assembly.
(2) Correct the installation (tighten the
screws).
Apply silicon grease.
(3) Replace the outdoor unit fan
motor.
(4) Replace the outdoor unit control
PCB assembly.
(5) Replace the compressor.
Replace the outdoor unit control PWB
assembly
(1) Ensure unobstructed air flow from
the outdoor unit air outlet.
(2) Check the outdoor unit fan motor.
(1) Replace the outdoor unit control
PCB assembly.
(1) Ensure unobstructed air flow from
the outdoor unit air outlet.
(2) Check the outdoor unit fan motor.
(1) Replace the outdoor unit control
PCB assembly.
(2) Charge the specified amount of
refrigerant.
(3) Correct refrigerant clogs.
(2-way valve, 3-way valve, pipe,
expansion valve)
(1) Correct the installation.
(2) Replace the thermistor assembly.
(3) Replace the 4-way valve.
(4) Replace the outdoor unit control
PCB assembly.
(1) Charge the specified amount of
refrigerant.
(2) Replace the 4-way valve.
(3) Replace the compressor with the
correct part.
(1) Correct the installation.
(2) Replace the outdoor unit fan
motor.
(3) Replace the outdoor unit control
PCB assembly.
(4) Replace the outdoor unit control
PCB assembly.
(1) Correct the installation.
(U: Red, V: White, W: Orange)
(2) Replace the outdoor unit control
PCB assembly.
(3) Replace the outdoor unit control
PCB assembly.
(4) Replace the compressor.
(1) Connect stable power supply.
(2) Replace the outdoor unit control
PCB assembly.
(1) Replace the outdoor unit control
PCB assembly.
(1) Connect stable power supply.
(2) Replace the outdoor unit control
PCB assembly.
(1) Correct the wiring.
(2) Replace the fuse/outdoor unit
control PCB assembly.
(3) Replace the outdoor unit control
PCB assembly.
(4) Replace the outdoor unit fan
motor.
(5) Replace the outdoor unit control
PCB board.
(1) Correct the wiring.
(1) Correct the wiring.
Remedy
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