IVT AE-X12FR-N, Руководство по обслуживанию, Страница: 22 / 34

GSXP12HRN
3 – 1
GSXP12HRN
Service Manual
CHAPTER 3.
TROUBLESHOOTING
[1] TROUBLESHOOTING GUIDE
1. SELF-DIAGNOSIS FUNCTION AND DISPLAY MODE
1) To call out the content of the self-diagnosis memory, hold down the emergency operation button for more than five seconds when the indoor unit is
not operating.
a) According to the content of the self-diagnosis memory, the Operation LED (main category) and the Plasmacluster Ion LEDs (sub-category)
flash in sync with the Timer LED on the indoor unit.
b) In the event a complete shutdown occurs due to a malfunction, the Operation LED (red), Timer LED (yellow) and Plasmacluster Ion LED (blue)
flash to indicate the general information of the generated malfunction.
c) If the power cord is unplugged from the AC outlet or the circuit breaker is turned off, the self-diagnosis memory loses the stored data.
2) Display of detailed self-diagnosis result with main category and sub-category indications
When malfunction information is called out, the main category and sub-category of the self-diagnosis result are indicated by the Operation, Timer,
and Plasmacluster Ion LEDs on the indoor unit.
* 1:Example of self-diagnosis result displayed on indoor unit: Suction thermistor open-circuit error
* 2:The self-diagnosis display function of the outdoor unit indicates the error information by flashing LED1 on the outdoor unit according to the
content of self-diagnosis.
The self-diagnosis display function of the outdoor unit is active only for about 3 to 10 minutes after self-diagnosis is performed during operation,
and the display returns to normal condition after this display period.
The content of self-diagnosis cannot be called out by the self-diagnosis display function of the outdoor unit.
* 3:The content of diagnosis is transferred to the indoor unit via serial communication, but it does not trigger a complete shutdown operation.
*1: Example of self-diagnosis result displayed on indoor unit: Suction thermistor open-circuit error
Timer LED [yellow]
ON
OFF
Basic flashing cycle due to error
1 sec 1 sec 1 sec 5 sec
Figures in ( ) indicate numbers (binary notation) assigned based on the flashing sequence.
Flashing for main category indication
Flashing for sub-category indication
ON
OFF
Operation LED [red]
Plasmacluster Ion LED [blue]
Malfunction No.
Main category Sub-category
Example of self-diagnosis display on outdoor unit : Compressor high-temperature abnormality
1 sec 1 sec 0.6 sec 1 sec 1 sec 1 sec 1 sec 1 sec 1 sec 1 sec 0.6 sec 0.6 sec 0.6 sec
ON
OFF
Operation lamp
(RED)
Cluster lamp
(BLUE)
Indication by operation lamp on indoor unit
Lighting pattern at the time of timer lamp lighting
Off for 5 seconds
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)
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)
: Flashes in 2-sec intervals (normal), : 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.)
Status of
indoor/outdoor
units
Indoor/outdoor
units in
operation
Indoor/outdoor
units in
complete
shutdown
Indoor/outdoor
units in
complete
shutdown
Indoor unit in
operation
Outdoor unit in
temporary stop
Indoor unit in
operation
Outdoor unit in
temporary stop
Normal
flashing
1 time
2 times
3 times
Outdoor unit
thermistor
short-circuit
Cycle
temperature
Dry
operation
Heat exchanger
thermistor short-circuit
error
Compressor high-
temperature error
Temporary stop due to
compressor discharge
overheat *3
(1) Measure resistance of the outdoor unit
thermistors.
(TH2 to TH5: Approx. 4.4 k at 25¼C)
(2) Check the lead wire of the outdoor unit
thermistor for torn sheath and short-
circuit.
(3) No abnormality found in above
inspections (1) and (2).
(1) Replace the outdoor unit
thermistor assembly.
(2) Replace the outdoor unit
thermistor assembly.
(3) Replace the outdoor unit control
PCB assembly.
(1) Check the outdoor unit air outlet for
blockage.
(2) Check if the power supply voltage is
198V or higher at full power.
(3) Check the pipe connections for
refrigerant leaks.
(4) Measure resistance of the outdoor unit
compressor thermistor.
(TH1: Approx. 53 k at 25¼C)
(5) Check the expansion valve for proper
operation.
(Temporary stop for cycle protection)
(1) Ensure unobstructed air flow from
the outdoor unit air outlet.
(2) Connect power supply of proper
voltage.
(3) Charge the specified amount of
refrigerant.
(4) Replace the outdoor unit
compressor thermistor assembly.
(5) Replace the expansion valve coil,
expansion valve or outdoor unit
control PCB assembly.
Normal
Indication by
LED1 on
outdoor unit
*2
Malfunction No.
Content of diagnosis
Inspection location/method Remedy
Main
category
Sub-
category
Main
category
Sub-category
0 0
1 -0
2 -0
3 -0
-1
Temporary stop due to
outdoor unit heat
exchanger overheat *3
(Temporary stop for cycle protection)
-2
Temporary stop due to
outdoor unit heat
exchanger overheat *3
temporary stop due to
2-way valve freeze *3
Temporary stop due to
dehumidifying
operation *3
(Temporary stop for cycle protection)
-3
(Temporary stop for cycle protection)
(Temporary stop for cycle protection)
-4
Outside temperature
thermistor short-circuit
error
-1
Suction thermistor
short-circuit error
2-way valve thermistor
short-circuit error
-2
-3