Page 1
SERVICE MANUAL
AY-X9PSR
SC213AYX9PSR/C
Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the
safety and performance of the set.
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
CHAPTER 1. SPECIFICATION
[1] SPECIFICATION ........................................... 1-1
[2] EXTERNAL DIMENSION ..............................1-2
[3] WIRING DIAGRM.......................................... 1-3
[4] ELECTRICAL PARTS.................................... 1-4
CHAPTER 2. EXPLANATION OF CIRCUIT AND OPERATION
[1] BLOCK DIAGRAMS ......................................2-1
[2] MICROCOMPUTER CONTROL SYSTEM........2-3
[3] FUNCTION.................................................. 2-18
CHAPTER 3. FUNCTION AND OPERATION OF PROTECTIVE PROCEDURES
[1] PROTECTION DEVICE FUNCTIONS AND
OPERATIONS............................................... 3-1
[2] AIR CONDITIONER OPERATION IN
THERMISTOR ERROR...............
..................3-2
[3] THERMISTOR TEMPERATURE CHAR-
ACTERISTICS...............................................3-3
[4] GENERAL TROUBLESHOOTING CHART....3-6
[5] MALFUNCTION (PARTS) CHECK METH-
OD..................................................................3-8
[6] CHART .........................................................3-10
[7] TROUBLE SHOOTING GUIDE ................... 3-11
CHAPTER 4. REFRIGERATION CYCLE
[1] SCHEMATIC DIAGRAM ................................ 4-1
[2] STANDARD CONDITION ...........................
... 4-1
[3] TEMPERATURE AT EACH PART AND
PRESSURE IN 3-WAY VALVE....................... 4-2
[4] PERFORMANCE CURVES ........................... 4-2
CHAPTER 5. DISASSEMBLY PROCEDURE
[1] INDOOR UNIT ............................................... 5-1
[2]
[3]
OUTDOOR UNIT ........................................... 5-4
CHAPTER 6. OPERATION MANUAL
CONTROL BOX............................................. 5-7
PA
RTS LIST
CONTENTS
SPLIT TYPE ROOM AIR CONDITIONER
INDOOR UNIT OUTDOOR UNIT
MODELS
In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts
identical to those specified should be used.
AE-X9PSR
AY-X12PSR AE-X12PSR
AY-X9PSR
MODELS
CHAPTER 7. INSTALLATION MANUAL
Page 2
CHAPTER 1. PRODUCT SPECIFICATION
[1] SPECIFICATION
1. AY-X9PSR/AY-X12PSR
INDOOR UNIT OUTDOOR UNIT INDOOR UNIT OUTDOOR UNIT
AY-X9PSR AE-X9PSR AY-X12PSR AE-X12PSR
kW
kW
Liters/h
Electrical date
Hz
V
Cool A
Heat A
Cool W
Heat W
Cool %
Heat %
Maximum operating current A
High dB(A) 38 60 38 62
4343)A(BdwoL
6262)A(BdtfoS
Fan system
High m3/min 11.0 31.7 11.0 28.3
4.84.8nim/3mwoL
8.58.5nim/3mtfoS
Cross flow fan Propeller fan Cross flow fan Propeller fan
Connections
inch
mm
Others
Width mm 820 700 820 700
Height mm 280 256 280 256
Depth mm 183 551 183 551
kg 10/12 24/28 10/12 26/30
Net/Gross weight
Drain pipe
Air filters
Net dimensions
Safety device
Drive
Air flow quantity(at cooling)
Fan
Refrigenrant tube size Gas,Liquid
Refrigerant coupling
Refrigerant(R410A)
De-Ice system
Noise Level(at cooling)
Refrigerant system
Evaporator
Condenser
0.8
Single
Control
Rated current(Min-Max)
Rated input(Min-Max)
Power factor
Compressor
Type
Model
Oil charge
50
220-240
3.5(1.32-5.0)
3.1(1.32-6.4)
760(290-1100)
680(290-1400)
94
95
6.4
Hermetically sealed ROTARY TYPE
DA89M1C-81EZ8
370ml˄ESTER OIL VG74˅
Louver fin and grooved tube type
Louver fin and grooved tube type
Microcomputer controlled reverse system
750
Microcomputer controlled reverse system
Flare tpye
3/8",1/4"
O.D16
Direct drive
Moisture removal(at cooling)
Phase
Rated frequency
Rated voltage
MODEL
ITEMS
3.5(1.1-3.7)
3.5(1.1-4.5)
2.6(1.00-3.10)
2.6(1.0-3.80)
Rated cooling capacity(Min-Max)
Rated heating capacity(Min-Max)
50
220-240
Hermetically sealed ROTARY TYPE
Louver fin and grooved tube type
1.0
Fuse,Micro compute control
Polypropylene net(washable)
Flare tpye
O.D16
950
370ml˄ESTER OIL VG74˅
1060(290-1330)
4.9(1.32-6.1)
Single
1010(290-1700)
Microcomputer controlled reverse system
Fan motor:thermal fuse
Fuse,Micro compute control
Louver fin and grooved tube type
Fan motor:thermal fuse
Microcomputer controlled reverse system
Direct drive
Polypropylene net(washable)
SHARP(CHINA)INVESTMENT CO.,LTD
1-1
94
95
7.8
1/2",1/4"
DA108M1C-81EZ8
4.6(1.32-7.8)
Page 3
[2] EXTERNAL DIMENSION
INDOOR UNIT
OUTDOOR UNIT
1-2
Page 4
[3]WIREING DIAGRAM
1.AY-X9PSR/AY-X12PSR
AE-X9PSR/AE-X12PSR
Indoor unit
Outdoor unit
1-3
©
Page 5
[4]ELECTRICAL PARTS
1.AY-X9PSR/AE-X9PSR
Indoor unit
CODE
1170030067
1090260049AA
1090320292
1170240024
1170020011
1170230001
Outdoor unit
CODE
210900163
210900026
1171990046
1170040126
1170230006
1170230007
2.AY-X12PSR/AE-X12PSR
Indoor unit
CODE
1170030067
1090260049AA
1090320292
1170240024
1170020011
1170230001
Outdoor unit
CODE
210900168
210900026
1171990046
1170040126
1170230006
1170230007
k5rosnes .pmeT roodtuo dna rosnes .pmeT epiP
Discharge Temp. sensor 2.1k
Inverter module
Inductor 5.0mHˈ10A
Vane motor 12V
Power source board
Indoor sensor 5k
SKRAMERNOITPIRCS
ED
Indoor fan motor 220V/50Hz
outdoor fan motor 220V/50Hz
Main PCB
Display PCB
Transformer 220V/50/60Hzˈ12V
2.1k
5k
SKRAMERNOITPIRCSED
Pipe Temp. sensor and outdoor Temp. sensor
Discharge Temp. sensor
220V/50Hz
220V/50/60Hzˈ12V
12V
5.0mHˈ10A
5k
REMARKS
Power source board
REMARKS
220V/50Hz
DESCRIPTION
Indoor sensor
DESCRIPTION
Inductor
Main PCB
Indoor fan motor
outdoor fan motor
Inverter module
Display PCB
Transformer
Vane motor
1-4
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SHARP(CHINA)INVESTMENT CO., LTD
CHAPTER 2.EXPLAMATION OF CIRCUIT AND OPERATTION
[1] BLOCK DIAGRAM
1. INDOOR UNIT
CPU
of
indoor
control
unit
Overcurrent detection
Unit-unit wiring (AC
power and serial
signals)and serial
signals)
Fan speed detection
Transformer
LEV
EEPROM
Room Temp detection circuit
IDU pipe temp detection circuit
Model jumper
LED Display driver
Indoor fan drive circuit
Model selection
IDU pipe temp thermistor
Buzzer drive circuit
LEV drive circuit
3.15A fuse
Room temp thermistor
Buzzer
Indoor fan motor
Auxiliary driving circuit Auxiliary circuit
Outdoor Power control Power on relay of outdoor unit
Anion driving circuit Anion circuit
Power Supply+15V
Reset circuit
DC+5V
Zero-crossing detection
LED display board
Indoor/outdoor control
2-1
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SHARP(CHINA)INVESTMENT CO., LTD
2. OUTDOOR UNIT
CPU
Of
power
board
Filter
Unit-unit wiring
(AC power and
serial signals)and
serial signals)
DC +5V
Inrush current protection
Power
Bus capacitance
SPI Communication
Power supply
Power supply +15V
Function select(self
Fan driving circuit
Compressor selection
4-way valve
Function select (System
Power on relay driving circuit
4-way valve relay drive
Fan circuit
COMM
Indoor/outdoor control signal
PFC CPU
PFC Circuit
PFC IGBT Driving Circuit
Exhaust Temp Detection
Compressor shell Temp
ODU Ambient Temp
ODU pipe Temp
EERPOM
Crystal oscillator of
EEPROM circuit
AC detection circuit
AC Voltage Detection
CPU
Of
Module
Board
Bus Voltage detection circuit
Reset circuit
Programmer port
IPM Module
PFC enable circuit
Compressor phase current detection circuit
Compressor over current detection circuit
LED
LED
Crystal oscillator of
Programmer port
LED AC Zero-crossing
Reset Circuit
DC +5V
Terminal of Compressor
20A FUSE
DC +5V2
Bus current detecting circuit
2-2
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SHARP(CHINA)INVESTMENT CO., LTD
[2] MICROCOMPUTER CONTROL SYSTEM
1. INDOOR UNIT
1.1. Electronic control circuit diagram
AY-X9PSR/AY-X12PSR
2-3
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SHARP(CHINA)INVESTMENT CO., LTD
2
AY-X9PSR/AY-X12PSR
2-4
Page 10
SHARP(CHINA)INVESTMENT CO., LTD
AY-X9PSR/AY-X12PSR
2-5
Page 11
SHARP(CHINA)INVESTMENT CO., LTD
AY-X9PSR/AY-X12PSR
2-6
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SHARP(CHINA)INVESTMENT CO., LTD
1.2. Printed wiring board
Indoor unit
AY-X9PSR/AY-X12PSR
2-7
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SHARP(CHINA)INVESTMENT CO., LTD
2. Outdoor unit
2.1. Electronic control circuit diagram
inverter modul board
AE-X9PSR/AE-X12PSR
2-8
1
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SHARP(CHINA)INVESTMENT CO., LTD
AE-X9PSR/AE-X12PSR
2-9
Page 15
SHARP(CHINA)INVESTMENT CO., LTD
AE-X9PSR/AE-X12PSR
2-10
Page 16
SHARP(CHINA)INVESTMENT CO., LTD
AE-X9PSR/AE-X12PSR
2-11
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SHARP(CHINA)INVESTMENT CO., LTD
AE-X9PSR/AE-X12PSR
2-12
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SHARP(CHINA)INVESTMENT CO., LTD
POWER SUPPLY BOARD
AE-X9PSR/EX-X12PSR
2-13
Page 19
SHARP(CHINA)INVESTMENT CO., LTD
AE-X9PSR/EX-X12PSR
2-14
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SHARP(CHINA)INVESTMENT CO., LTD
AE-X9PSR/EX-X12PSR
2-15
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SHARP(CHINA)INVESTMENT CO., LTD
2.2 Printed wiring board
Inverter module board
AE-X9PSR/AE-X12PSR
2-16
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SHARP(CHINA)INVESTMENT CO., LTD
POWER SUPPLY BOARD
AE-X9PSR/AE-X12PSR
2-17
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SHARP(CHINA)INVESTMENT CO.,LTD
[3] FUNCTION
1. Fuction
1.1. Compressor delay operate
TheOnce the compressor stops operating,
it will not restart for 3 minutes
to protect the compressor
.
Therefore, if the operating compressor is shut down from the remote control and then turned back on immediately after, the compressor will restart
after a preset delay time.
1.2. Four-way valve control in heating model
When the unti operates in heating model, the comprassor start-up after
the four-way valve start up for 5 seconds, the four-way valve shut down
after the compressor stops for 2 minutes when the unit shut down
1.4.ON timer
The ON timer can be activated by pressing the ON timer button.when the
ON timer is activated, the operation start time is adjusted base on fuzzy
logic calculations 1hour before the set time so that the room temperature
reaches the set temperature at the set time.
1.5. OFF timer
The OFF timer can be activated by pressing the OFF timer button.
z When the OFF timer is set, the operation stops after the set time.
z When the temperature is set during timer setting, the temperature will
show in the display for 5 seconds and then return to the timer display.
Timer duration can be set from a minimum half an hour to a maximum
of12 hours. Up to 9.5 hours, you can set in half-hour increments, and
from10 to 12 hours, in 1hour increments.
1.6. ON/OFF operation
If the air conditioner is off, you can pressing the ON/OFF button to
operates cooling or heating mode. Presses the ON/OFF button, when the
buzzer sounds 1 short sound then enter cooling operation, 2 short sounds
enter heating operation, 1 long sound shut down the unit.
The unit operates in the set mode in the first 10 minutes of ON/OFF
operation, in the first 10 minutes, the indoor fan speed operates on high
speed, the vane swings, the compressor operates at maximum frequency
F4. In cooling operation, the set temperature automatically 1ć lower than
room temp., in heating mode the set temp. automatically 1ć higher than
room temp., then the set temperature set at 23ć after 10 minutes, the
maximum operating frequency is F7.
1.7.Auto restart
Will automatically restart in the same setting whicth were active before the
power failure.
1.7.1. Operating mode at auto restart(Cool, Heat, Dr y)
z Temperature adjustment (within 2°C range) automatic operation
z Temperature setting
z Fan setting
z Air flow direction
z Power ON/OFF
z Automatic operation mode setting
z Swing louvre
1.7.2. Setting not memorized
z Timer setting
1.7.3. Active auto restart and disabling auto restart
function
If the auto resart wasn’t actived,you can presse the ON/OFF switch
and then supply the power and keep 10 seconds(the buzze sound 3
sounds) to actives it.
Contrary, if the auto restart has actived, you can press the ON/OFF
switch and then supply the power and keep until 4beeps sound to
disable it.
1.8. FULL POWER Operation
The airconditioner works at the maximum power to make the room
cool or warm rapidly
z The remote control will display ” “ button
z The temperature display will go off.
z The yellow FULL POWER lamp ” ” on.
TO CANCEL
Press the FULL POWER button again.
The yellow FULL POWER lamp ” ” on the unit will turn off
NOTE
z The airconditioner will operate at “Extra HIGH” fan speed for 5
minUtes, and then shift to “HIGH” fan speed.
z You can not set the temperature or fan speed during the FULL
POWER operation.
1.9. compressor discharge overheat prevevtion control
When the compressor discharge temperatureTP2(95 ), ć forbid the
frequency raise until the discharge temperature is bellow than TP2
decrease 2ć.
When the discharge temperatureTP3(100 ),ć drop the operating
frequency. If discharge temperature is over 105 ,ć then shut-down
the compressor, outdoor fan motor stop after 15 seconds, when the
discharge temperature˘TP2(95 )ć and the compressor is stoped
for 3 minutes, the unit operates again.
1.10. Voltage prevention
When the voltage AC 158V, the uint stops and displays the code P1
until the voltage AC162V , when the voltage AC265V and keeps
30 minutes, the unit stops and displays code P1 until the voltage
AC 260V.
1.11. Over current prevention
ƽ when the outdoor currentI
drop
frequency,the controller
drops1Hz/second until the minimum operation frequency.
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SHARP(CHINA)INVESTMENT CO.,LTD
ƽwhen the unit enter drop frequency prevention opreates, if I
drop
I
outdoorInormal
, the controller limit the operation frequency rise until I
outdoor
˘
I
normal
.
ƽ When the outdoor current I
max
, the compressor stops and outdoor
motor stops after 15 seconds
1.12. Compressor drive prevention
During the compressor start up or operation, if the signal of the
compressor can’t be checked or check the load is exceptonal or driver fail
then shut down the outdoor unit and displays the fail code.
1.13. Indoor unit evaporator freeze prevention
When the indoor evaporator temperature IPT4ć and keeps 1 minutes,
the uint enter the evaporator freeze prevention. If the indoor evaporate
temperature IPT-1 ć and remains 5 minutes during cooling or dry
operation, the compressor stops in order to prevent the freezer and
displays code P5.
When the indoor unit evaporator temperature IPT6ć, the compressor
restarts and resumes normal operation.
1.14. Outdoor unit overheat prevention
During cooling operation, if the temperature of the outdoor unit
heat-exchanger OPTexceeds the limit frequency rise temperature TOP2,
the contoller limit the operation frequency rise unti the OPT˘TOP2.
If if the temperature of the outdoor unit hea-texchanger OPT reach or
exceeds stops unit temperature TOP4, the compressor stop
operating,until OPTTOP1(prevention cancel temperature), the unit
restart and opreates at normal.
1.15. Indoor unit overheat prevention control
During heating operation, if the temperature of the indoor unit
heat-exchanger IPT exceeds the limit frequency rise temperature TIP2,
the contoller limits the operation frequency rise unti the IPT˘TIP2.
If the temperature of the outdoor unit heat-exchanger IPT reaches or
exceeds stops unit temperature TIP4, the compressor stops operating
and diplayes code P7,until IPTTIP1(prevention cancel temperature), the
unit restart and opreates at normal.
1.16. IPM pretector
If the IPM checked the temperature itself or current is higher than prevent
temperature or current, the contrller shuts down the outdoor unit and
displays code P0, when the IPM temperature or current drops to lower
than prevention temperature, the outdoor unit restarts and operates at
normal.
1.17. Startup control
When the air conditioner starts in the cooling or heating mode, if the room
temperature is 3.5°C higher than the set temperature, the unit operates
with the operating frequency at maximum. Then, when the set
temperature is reached, the unit operates at the operating frequency
determined by fuzzy logic calculation, then enters the normal control
mode after a while.
1.18. Cold air prevention control
When the air conditioner starts up in heating mode, the indoor unit fanwill
not operate until the temperature of the indoor unit heat excharge reaches
about 33°C in order to prevent cold air from blowing into the room.
Also, the indoor unit fan operates at low speed until the temperature ofthe
indoor unit heat exchanger reaches about 37°C so that people inthe room
will not feel chilly air flow.
1.19. Auto restart
When power failure occurs, after power is recovered, the unit will
automatically restart in the same setting which auto restart function
were active before the power failure, except for timer settings.
If a power failure ocurse while the timer is set, the timer setting will
be cancelled and willl not be retrived even after the power is
restored.
1.20. Defrosting
Defrosting is controlled by the microprocessor.
1.20.1. conditions of defrosting
The defrost operation starts when the one of the following conditions
is satisfied, the unit will come into defrosting. When the defrost
operation starts, if the indoor excharge temperature less than 34ć,
the indoor unit fan stops.
a. utdoor heat exchanger Temperature (OPT) is continuously up
to or less than 3ć while the unit runs for more than 40 minutes,
and OPT is keep under -6ć for more than 3 minutes.
b. Outdoor heat exchanger Temperature (OPT) is continuously uo
to or less than 3ć meanwhile the unit runs for more than 80
minutes, and OPT is keep under -4ć for more than 3 minutes.
c. Outdoor heat exchanger Temperature (OPT) is continuously up
to or less than 3ć while the unit runs for more than 120
minutes, and OPT is keep below -2ć for more than 3 minutes.
d. Once in the heating mode, if the outdoor heat excharge
temperature(OPT) keep lower than 0ć and outdoor tempera-
ture higher than 3ć, also the compressor operates for more
than 20 minutes and the outdoor heat exchanger Temperature
(OPT) reaches -6ć or less and keeps 3 minutes, enter the first
defrost.
The defrost operation stops when the outdoor unit heat-exchanger
temperature rises to about 15°C or higher or the defrosting time
exceeds 10 minutes.
1.20.2. Compressor operation frequecy
Before the air conditioner come into defrosting, compressor running
frequen- cy drop down to a lower frequency firstly, then the compressor shuts down.
In defrosting, the max. frequency of compressor is F9, in this period
all protection functions are avaliable.
1.20.3 The part operation order.
34ć
low fan speed
set fan speed
temperature
drop
22
ć
stop
soft
28
ć
33ć
37ć
25ć
temperature
rise
10S50S 15S
İ10minutes
15S
ON
OFF
OFF
ON
OFF
ON
outdoor fan motor
4-way valve
compressor
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SHARP(CHINA)INVESTMENT CO.,LTD
1.21.
Information about auto mode.
In the AUTO mode, the temperature setting and mode are automatically
selected according to the room temperature when the unit is turned on.
z In the “AUTO”model, when the controller receives the up or down
singnals of temperature from remote control, the set temperature
can be adjusted by 1ćupper or lower. The maximum you can
adjust by 2ć upper or lower.
z If the “AUTO” mode operates in DRY , the set temperature and
the fan speed can’t changed.
1.22. Airflow control
ƽ Press the SWING button, the vetical air flow louver will swing.
ƽ Press the SWING button again to stop at the desired position.
1.23. Difference relating to set temperature
1.24. Drying operation control
When the unit operates in drying mode, the set temperature is set and keep at room temperature decrease 2°C , and you can not adjusted it.
2. Outline of PWM (Pulse Width Modulation) circuit
2.1. Power Factor Correction(PFC)
The PFC circuit varies the compressor drive voltage and controls the rotation speed of the compressor.
The IGBT shown in the block diagram charges the energy (electromotive force) generated by the reactor to the electrolytic capacitor for the inverter by
turning ON and OFF.
Model Initial Room Temerature Initial Set Temperature
COOLING
RT26ć 23ć
DRY
26ć˚RT20ć
RT-2
HEATING
RT˘20ć 23ć
FAN
RT˘20ć
-
Auto mode Manual mode
Cooling Heating Drying Cooling Heating Drying
Temperature
setting
method
Automatic temperature setting based on outside air
temperature. Can be changed within ±2°C using remote
con-trol.
Can be changed
between 18 and 32°C
using remote control.
Can be changed
between 18 and
32°C using remote
control.
Automatic setting.
Can be changed
within±2°C.
2-20
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SHARP(CHINA)INVESTMENT CO.,LTD
When the IGBT is ON, an electric current flows to the IGBT via the reactor.
When the IGBT turns OFF, the energy stored while the IGBT was ON is charged to capacitor.
As such, by varying the ON/OFF duty of the IGBT, the output voltage is varied.
This circuit brings the operating current waves form closer to the waveform of commercial power supply voltage to maintain a high power factor.
Because of the capacitor input, when the PFC circuit is OFF, the phase of the current waveform deviates from the voltage waveform.
The IGBT turns ON after the time length determined by the zero-cross point to supply a current to the IGBT via the reactor.
This brings the current waveform closer to the voltage wave form in phase.
As described above, the ON/OFF operation of the IGBT controls maintain a high power factor by keeping the current phase closer to that of the supply
voltage.
2.2 Detailed explanation of PFC drive circuit sequence
t0~t1: IGBT Off, to detect the voltage Zero-crossing;
t1~t2: IGBT PWM (20KHz), to improve current waveform closer to voltage waveform;
t2~t3: IGBT Off;
t3~t4: IGBT PWM (20KHz), to improve current waveform closer to voltage waveform;
t4~t5: IGBT Off, to detect the voltage Zero-crossing;
The detected clock waveform is used to judge the power source frequency (50Hz/60Hz).
3. Explanation of IPM drive circuit
The IPM for compressor drive is made by Fairchild.
The power supply for the IPM drive, the shunt resistance for over current detection, etc., are provided outside the IPM (control PCB).
3.1. IPM drive power supply circuit
The power supply for the upper-phase IGBT (HU, HV, HW) drive employs a bootstrap system, and provides power to the upper-phase IC.
The 15-V power supply for the lower-phase IC is provided by the control printed circuit board (PCB).
3.1.1 Brief explanation of bootstrap system (single power drive system)
To supply power to the upper-phase IC, the microcomputer (IC1) turns ON the lower-phase IGBT (LU, LV, LW).
This results in a charging current that flows to the electrolytic capacitor of each upper-phase IC input and charges the bootstrap capacitor with a 15V
current
The power supply for the subsequent stages is charged while the lower-phase IGBT is ON in ordinary compressor drive control.
-Bootstrap Circuit Design
Operation of Bootstrap Circuit
The V
BS
voltage difference between V
B(U,V,W)
and V
S(U,V,W)
, provides the supply to the HVIC within the Mini-DIP SPM package family in Motion-SPM
products. This supply must be in the range of 13.0V~18.5V to ensure that the HVIC can fully drive the high-side IGBT. The Mini-DIP SPM package
includes an under-voltage lockout protection for the V
BS
to ensure that the HVIC does not drive the high-side IGBT, if the VBS voltage drops below a
specific voltage(refer to the datasheet).This function prevents the IGBT from operating in a high-dissipation mode.
The V
BS
Floating supply can be generated a number of ways, including the bootstrap method described here (refer to Figure 34).This method has the
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SHARP(CHINA)INVESTMENT CO.,LTD
advantage of being simple and inexpensive; however, the duty cycle and on-time are limited by the need to refresh the charge in the bootstrap capacitor.
The bootstrap supply is formed by a combination of and bootstrap diode, resistor, and capacitor as shown in Figure35 and Figure36. The current flow path
of the bootstrap circuit is show in Figure 35. When V
s
is pulled down to ground (either through the low-side or the load), the bootstrap capacitor CBS) is
charged through the bootstrap diode (D
BS
) and the resistor (RBS) from the VCC supply.
(Figure 34) (Figure 35)
(Figure 36)
3.1.2 Compressor over current detection circuit
When a current of about 25 A or higher flows through the shunt resistance (R638,R642,R644) on the control printed circuit board (PCB), the voltage at
this resistance is input to IPM CSC pin (8). Then the gate voltage of the lower-phase IGBT (LU, LV, LW) inside the IPM turns OFF to cut off the over
current. At the same time, an L output of about 2ms is generated from IPM VFO pin (6), and this results in an L input to overcurrent detection input VFO of
the microcomputer and turns OFF the PWM signal output through to the IGBT gate.
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SHARP(CHINA)INVESTMENT CO.,LTD
CHAPTER 3. FUNCTION AND OPERATION OF PROTECTIVE PROCEDURES
[1] PRETECTION DEVICE FUNCTIONS AND OPERATIONS
Operation
FUNTION
Description
1
Compressor
discharge over heat
shut-down
Discharge temperatureTP2
(95 ), forć bid the frequency
raise.
Discharge temperatureTP3
(100 ),drop the operating ć
frequency. If discharge tem-
perature over 105ć, shut-
down the compressor,outdoor
fan motor stops after
15 seconds.
When
compressor is
in operation
Discharge temperature
is below than TP2-2 .ć
Discharge temperature
˘ TP2(95 )ć .
Discharge temperature
˘ TP1(90 )ć and after
compressor stops for 3
minutes.
P4 none yes
2
Compressor delaye
operation
The compressor delayes 3
minutes to restart
When the com-
pressor stopes
The compressor stops
for 3 minutes
none none none
3
Lower voltage
preventiion
The unit stops if AC
158V
When the unit in
operation
When AC162V P1 none yes
4
Higher voltage
preventiong
The unit stops if
AC265V
When the mach-
ine in operation
When AC260V P1 none yes
5
Over current When the outdoor current
I
max
,the compressor stops
and outdoor motor stops after
15 seconds
When the
machine in
operation
When the outdoor
current˘I normal
P2 none yes
6
Compressor drive If the system can’t check the
feed-back signal of compress-
or or load is exceptonal or
driver fail then shut down
the outdoor unit
When the com-
pressor drives or
operates.
Operation offf of on P9 none yes
7
Indoor unit evaporator
frezze prevention
Compressor stops if indoor
pipe temperature IPT-1 ć
and remains 5minutes
When in cooling
or dehumidifying
operation
Automatic reset when
indoor pipe temperature
IPT 6 ć and remains
10 minutes
P5 none yes
8
Outdoor unit overheat
prevention
Compressor shtops if the
outdoor unit heatexchanger
temperature OPTTOP4
When the unit in
operation
When the outdoor pipe
temperature OPTTOP1
P6 outdoor
light flash
5cycle
none yes
9
Indoor unit overheat
prevention
Compressor stops if indoor
exchaege temperature
IPTTIP4
When the unit is
in operation
When the indoor pipe
temperature IPTTIP1
P7 yes none
10
IPM pretector The outdoor unit shutt down if
the IPM checks the
temperature of IPM itself or
the current is too high
When the unit is
in operation
When the IPM chck the
temperature of IPM itself
or the current fall to
normal
P0 none yes
11
Outdoor unit heat
exchanger thermistor
short-circuit
Indoor and outdoor unit stops
if there is short-circuit or
break in outdoor unit heat
exchanger thermistor
At compressor
startup
Operation OFF or ON E3 yes yes
12
Outdoor unit outside
air temperature ther-
mistor open-circuit
error
Indoor and outdoor unit stops
if there is short-circuit or
break in outdoor unit heat
exchanger thermistor
At compressor
startup
Operation OFF or ON E8 yes yes
3-1
Detection
period
Reset condition
Indoor unit
error display
Self-daignosis
result display
Indoor
unit
Outdoor
unit
Page 30
SHARP(CHINA)INVESTMENT CO.,LTD
[2] AIR CONDITIONER OPERATION IN THERMISTOR ERROR
1. Indoor unit
Item Mode Control
operation
When resistance is
low (tempera-ture
judged higher than
actual)
Short-circuit When resistance
is high (temperature judged lower
than actual)
Open-circuit
Auto Operation mode
judgment
Cooling mode is
activated even if room
temperature is low.
The unit stops Heating mode is
activated even if room
temperature is high.
The unit stops
Cooling Frequency con-
trol
Room becomes too cold The unit stops Room does not
become cool.
The unit stops
Dehumidifying Room temperature
memory frequency
control
Normal operation. The unit stops Normal operation. The unit stops
Room tempe-
rature ther-
mistor (TH1)
Heating Frequency control Room does not become
warm
The unit stops Room becomes too
warm.
The unit stops
Cooling
Drying
Freeze prevention Indoor unit evaporator
may freeze.
The unit stops Compressor stops
occasionally.
The unit stops Heat exchanger
thermistor (TH2)
Heating Cold air prevention Cold air prevention
deactivates too soon
and cold air discharges.
The unit stops Cold air prevention
deactivates too slow.
The unit stops
2. Outdoor unit
13
Outdoor unit
discharge thermistor
open-circuit error
Indoor and outdoor unit stops
if there is short-circuit or
break in outdoor unit heat
exchanger thermistor
At compressor
startup
Operation OFF or ON E3 yes yes
14
Outdoor unit outside
air temperature
ther-mistor
short-circuit error
Indoor and outdoor unit stops
if there is short-circuit or
break in outdoor unit heat
exchanger thermistor
At compressor
startup
Operation OFF or ON E8 yes yes
15
Discharge pipe
temperature themister
short-circuit error
Indoor and outdoor unit stops
if there is short-circuit or
break in outdoor unit heat
exchanger thermistor
At compressor
startup
Operation OFF or ON E8 yes yes
16
Discharge pipe
temperature themister
open-circuit error
Indoor and outdoor unit stops
if there is short-circuit or
break in outdoor unit heat
exchanger thermistor
At compressor
startup
Operation OFF or ON E8 yes yes
17
Serial signal error Indoor and outdoor unit stops
if outdoor unit cannot receive
serial signal from indoor unit
for 2minutes.
When in
operation
Reset after reception of
serial signal
E0 yes yes
18
Outdoor unit DC fan
error
Operation stops if there is no
input of rotation pulse signal
from out-door unit fan motor
for 30 seconds
When outdoor
unit fan is in
operation
Operation OFF or ON EF yes yes
3-2
Description
Detection
period
Reset condition
Indoor unit
error display
Indoor
unit
Outdoor
unit
Page 31
SHARP(CHINA)INVESTMENT CO.,LTD
Item Mode Control
operation
When resistance is
low (tempera-ture
judged higher than
actual)
Short-circuit When resistance
is high (temperature judged lower
than actual)
Open-circuit
Compressor
discharge pipe
thermistor (TH1)
Cooling
Dyring
Heating
Expansion valve
control and
compressor
protection
Compressor operates,
but room does not
become cool or warm
Compressor
discharge pipe
temperature
error indica-
tion.
Layer short-circuit or
open-circuit may
result in compres-sor
in normal oper-ation.
Compressor
discharge pipe
temperature
error indica-
tion.
Cooling
Drying
Outdoor unit heat
exchanger over
heat prevention
Compressor operates at
low speed or stops.
Outdoor unit
thermistor short-
circuit error
indication.
Normal operation. Outdoor unit
thermistor
open-circuit
error indication.
Heat exchanger
thermistor (TH2)
Heating Expansion valve
control Defrosting
Defrosting operation is
not activated as needed,
and frost accumulates
on outdoor unit
Outdoor unit
thermistor
short-circuit error
indication.
Defrosting operation
is activated unnece-
ssarily, and room
does not become
warm
Outdoor unit
thermistor
short-circuit
error indication.
Auto Operation mode
judgement
Cooling mode is
activated even if room
temperature is low.
Outdoor unit
thermistor
short-circuit error
indication.
Heating mode is
activated even if
room temperature is
high.
Outdoor unit
thermistor
open-circuit
error indication.
Cooling
Drying
Operation not
affected
Normal operation. Outdoor unit
thermistor short
-circuit error
indication.
Normal operation. Outdoor unit
thermistor open
-circuit error
indication.
Outside air
temper-ature
thermistor (TH3)
Heating Rating
controlDefrosting
Defrosting operation is
activated unnecessarily.
Outdoor unit
ther-mistor short
-circuit error
indication.
Defrosting operation
is not activated, and
frost accumulates on
outdoor unit.
Outdoor unit
thermistor
open-circuit
error indication.
[3] THERMISTOR TEMPERATURE CHARACTERISTICS
1. Indoor unit and outdoor exchange temperature and outside air temperature thermistor temperature characteristics
TEMP.
Resistance
(k Ohm)
Votalge of
resisitance TEMP.
Resistance
(k Ohm)
Votalge of
resisitance TEMP.
Votalge of
resisitance
-30 63.513 4.628 15 7.447 2.968 60 1.464 1.115
-29 60.135 4.609 16 7.148 2.918 61 1.418 1.088
-28 56.956 4.589 17 6.863 2.868 62 1.374 1.061
-27 53.963 4.568 18 6.591 2.819 63 1.331 1.035
-26 51.144 4.547 19 6.332 2.769 64 1.290 1.009
-25 48.488 4.524 20 6.084 2.720 65 1.250 0.984
-24 45.985 4.501 21 5.847 2.671 66 1.212 0.960
-23 43.627 4.477 22 5.621 2.621 67 1.175 0.936
-22 41.403 4.452 23 5.404 2.572 68 1.139 0.913
-21 39.305 4.426 24 5.198 2.524 69 1.105 0.890
-20 37.326 4.399 25 5.000 2.475 70 1.072 0.868
-19 35.458 4.371 26 4.811 2.427 71 1.040 0.847
-18 33.695 4.343 27 4.630 2.379 72 1.009 0.825
-17 32.030 4.313 28 4.457 2.332 73 0.979 0.805
-16 30.458 4.283 29 4.292 2.285 74 0.950 0.785
-15 28.972 4.252 30 4.133 2.238 75 0.922 0.765
-14 27.567 4.219 31 3.981 2.192 76 0.895 0.746
-13 26.239 4.186 32
3.836
2.146 77 0.869 0.728
3-3
Resistance
(k Ohm)
Page 32
SHARP(CHINA)INVESTMENT CO.,LTD
TEMP.
Resistance
(k Ohm)
Votalge of
resisitance TEMP.
Resistance
(k Ohm)
Votalge of
resisitance TEMP. R(k Ohm)
Votalge of
resisitance
-12 24.984 4.152 33 3.697 2.101 78 0.843 0.710
-11 23.795 4.117 34 3.563 2.057 79 0.819 0.692
-10 22.671 4.082 35 3.435 2.012 80 0.795 0.675
-9 21.606 4.045 36 3.313 1.969 81 0.773 0.658
-8 20.598 4.008 37 3.195 1.926 82 0.751 0.641
-7 19.644 3.969 38 3.082 1.883 83 0.729 0.625
-6 18.732 3.930 39 2.974 1.842 84 0.709 0.610
-5 17.881 3.890 40 2.870 1.800 85 0.689 0.595
-4 17.068 3.850 41 2.770 1.760 86 0.669 0.580
-3 16.297 3.808 42 2.674 1.720 87 0.651 0.566
-2 15.565 3.766 43 2.583 1.681 88 0.633 0.552
-1 14.871 3.723 44 2.494 1.642 89 0.615 0.538
0 14.212 3.680 45 2.410 1.604 90 0.598 0.525
1 13.586 3.635 46 2.328 1.567 91 0.582 0.512
2 12.991 3.590 47 2.250 1.530 92 0.566 0.499
3 12.426 3.545 48 2.174 1.495 93 0.550 0.487
4 11.889 3.499 49 2.102 1.459 94 0.535 0.475
5 11.378 3.452 50 2.032 1.425 95 0.521 0.463
6 10.893 3.406 51 1.965 1.391 96 0.507 0.452
7 10.431 3.358 52 1.901 1.357 97 0.493 0.441
8 9.991 3.310 53 1.839 1.325 98 0.480 0.430
9 9.573 3.262 54 1.779 1.293 99 0.467 0.419
10 9.174 3.214 55 1.721 1.262 100 0.455 0.409
11 8.795 3.165 56 1.666 1.231
12 8.433 3.116 57 1.613 1.201
13 8.089 3.067 58 1.561 1.172
14 7.760 3.017 59 1.512 1.143
Resistance at 2ć 5 k.
TH1: indoor room temperature thermistor and outside air temperature thermistor
TH2: indoor exchange temperature themistor and outside exchange temperature thermistor
Before measuring resistance,disconnect connectors as shown above.
2. Outdoor unit thermistor temperature characteristics
3-4
Resistance
Page 33
SHARP(CHINA)INVESTMENT CO.,LTD
TEMP.
Rmin
(k Ohm)
R(t)
(k Ohm)
Rmax
(k Ohm) TEMP.
Rmin
(k Ohm)
R(t)
(k Ohm)
Rmax
(k Ohm) TEMP.
Rmin
(k Ohm)
R(t)
(k Ohm)
Rmax
(k Ohm)
-30 283.3 322.9 367.7 24 19.36 20.89 22.52 78 2.563 2.654 2.745
-29 267.4 304.4 346.3 25 18.55 20 21.54 79 2.481 2.567 2.654
-28 252.5 287.1 307.4 26 17.77 19.14 20.6 80 2.402 2.484 2.567
-27 238.5 270.9 307.4 27 17.03 18.32 19.7 81 2.327 2.404 2.483
-26 225.4 255.7 289.8 28 16.32 17.55 18.85 82 2.254 2.327 2.401
-25 213.1 241.4 273.3 29 15.65 16.81 18.04 83 2.183 2.253 2.323
-24 201.5 228 257.9 30 15 16.1 17.27 84 2.115 2.182 2.248
-23 190.6 215.5 243.4 31 14.39 15.43 16.54 85 2.05 2.113 2.176
-22 180.3 203.6 229.8 32 13.81 14.79 15.34 86 1.985 2.047 2.109
-21 170.7 192.5 217 33 13.25 14.18 15.17 87 1.922 1.983 2.045
-20 161.6 182.1 205 34 12.72 13.6 14.54 88 1.861 1.922 1.983
-19 153.1 172.3 193.7 35 12.21 13.05 13.93 89 1.802 1.862 1.923
-18 145 163.1 183.2 36 11.72 12.52 13.36 90 1.746 1.805 1.865
-17 137.5 154.4 173.2 37 11.26 12.01 12.81 91 1.692 1.75 1.809
-16 130.3 146.2 163.9 38 10.82 11.53 12.29 92 1.639 1.697 1.755
-15 123.6 138.5 155.1 39 10.29 11.07 11.78 93 1.589 1.646 1.703
-14 117.3 131.3 146.8 40 9.986 10.63 11.31 94 1.54 1.596 1.653
-13 111.3 124.4 139 41 9.6 10.21 10.85 95 1.493 1.549 1.604
-12 105.6 118 131.7 42 9.231 9.813 10.42 96 1.448 1.502 1.558
-11 100.3 111.9 124.7 43 8.878 9.43 10 97 1.404 1.458 1.512
-10 95.24 106.2 118.2 44 8.54 9.064 9.612 98 1.362 1.415 1.469
-9 90.49 100.8 112.1 45 8.217 8.714 9.233 99 1.321 1.373 1.426
-8 85.99 95.68 106.3 46 7.908 8.38 8.872 100 1.284 1.335 1.387
-7 81.75 90.86 100.8 47 7.612 8.06 8.526 101 1.245 1.296 1.348
-6 77.74 86.31 95.74 48 7.328 7.754 8.196 102 1.209 1.258 1.309
-5 73.94 82.01 90.88 49 7.057 7.461 7.88 103 1.173 1.222 1.272
-4 70.35 77.95 86.29 50 6.797 7.18 7.578 104 1.139 1.187 1.236
-3 66.96 74.11 81.96 51 6.548 6.912 7.289 105 1.105 1.153 1.202
-2 63.74 70.48 77.87 52 6.309 6.655 7.013 106 1.073 1.12 1.168
-1 60.69 67.05 74 53 6.08 6.409 6.748 107 1.042 1.089 1.136
0 57.81 63.8 70.34 54 5.861 6.173 6.495 108 1.013 1.058 1.104
1 55.08 60.72 66.88 55 5.651 5.947 6.253 109 0.9833 1.028 1.074
2 52.49 57.81 63.61 56 5.449 5.73 6.02 110 0.9553 0.9997 1.045
3 50.03 55.05 60.52 57 5.255 5.522 5.798 111 0.9283 0.9719 1.016
4 47.71 52.44 57.59 58 5.07 5.323 5.585 112 0.9021 0.9451 0.9892
5 45.5 49.97 54.82 59 4.891 5.132 5.381 113 0.8765 0.9191 0.9626
6 43.41 47.62 52.2 60 4.72 4.949 5.101 114 0.8524 0.894 0.9367
7 41.42 45.4 49.71 61 4.556 4.774 4.997 115 0.8087 0.8595 0.9117
8 39.53 43.2 42.33 62 4.398 4.605 4.817 116 0.8059 0.8461 0.8875
9 37.74 41.29 45.12 63 4.247 4.448 4.644 117 0.7837 0.8233 0.8641
10 36.04 39.39 43.01 64 4.101 4.288 4.479 118 0.7623 0.8012 0.8413
11 34.42 37.59 41 65 3.961 4.139 4.32 119 0.7415 0.7798 0.8193
12 32.89 35.87 39.1 66 3.827 3.995 4.167 120
13 31.43 34.25 37.29 67
3.698
3.858 4.021 121 0.702 0.7386 0.7773
3-5
Page 34
SHARP(CHINA)INVESTMENT CO.,LTD
TEMP.
Rmin
(k Ohm)
R(t)
(k Ohm)
Rmax
(k Ohm) TEMP.
Rmin
(k Ohm)
R(t)
(k Ohm)
Rmax
(k Ohm) TEMP.
Rmin
(k Ohm)
R(t)
(k Ohm)
Rmax
(k Ohm)
14 30.04 32.71 35.58 68 122 0.6631 0.7195 0.7572
15 29.72 31.24 33.95 69 123 0.6649 0.7007 0.7378
16 70 3.339 3.476 3.616 124 0.6472 0.6824 0.7189
17 71 3.229 3.359 3.491 125 0.6301 0.6647 0.7006
18 25.13 27.26 29.55 72 3.122 3.246 3.372 126 0.6135 0.6476 0.6829
19 24.05 26.07 28.23 73 3.02 3.138 3.257 127 0.5974 0.6309 0.6657
20 23.02 24.93 26.97 74 2.921 3.033 3.146 128 0.5818 0.6148 0.649
21 22.04 23.84 25.77 75 2.827 2.933 3.04 129 0.5667 0.5991 0.6328
22 21.1 22.81 24.63 76 2.735 2.836 2.938 130 0.5521 0.5839 0.6171
23 20.21 21.83 23.55 77 2.647 2.743 2.84
R—Resistance
Rrsistance at 25
ć
20 k
TH3: Outdoor unit discharge pipe thermistor
Before measuring resistance,disconnect connectors as shown above.
[4] GENERAL TROUBLESHOOTING CHART
1. Indoor unit does not turn on
2. Indoor unit fan does not operate
3. Indoor unit fan speed does not change
Main cause Inspection method Normal value/condition Remedy
Cracked PCB.
(Cracked pattern)
Check visually. There should be no cracking in
PCB or pattern.
Replace PCB.
Open-circuit in FU1 (250 V, 3.15A). Check melting of FU1. There should be no open-circuit. Replace PCB.
Main cause Inspection method Normal value/condition Remedy
Refer to themistor temperature
characteristic
Replace thermistor.
Open-circuit in heat exchanger ther-
mistor (TH2)
Measure thermistor resistance
(dismount for check).
There should be no open-circuit
or faulty contact.
Replace thermistor.
Disconnected heat exchanger ther-
mistor (TH2)
Inspect connector on PCB.Check
thermistor installation con-dition.
Thermistor should not be
disconnected.
Install correctly.
3-6
Page 35
SHARP(CHINA)INVESTMENT CO.,LTD
Main cause Inspection method Normal value/condition Remedy
Remote control not designed to allow
fan speed change.
Check operation mode.
Fan speed should change ex-
cept during dehumidifying ope-
ration, sleep operation,internally
normal operation
Explain to user.
4. Remote control signal is not received
Main cause Inspection method Normal value/condition Remedy
Batteries at end of service life. Measure battery voltage.
2.5 V or higher (two batteries in
series connection)
Install new batteries.
Batteries installed incorrectly. Check battery direction.
As indicated on battery
compartment.
Install batteries in indicated
direction.
Lighting fixture is too close, or
fluorescent lamp is burning out.
Turn off light and check. Signal should be received when
light is turned off.
Change light position or install
new fluorescent lamp.
Operating position/angle is
inap-propriate.
Operate within range specified in
manual.
Signal should be received within
range specified in manual.
Explain appropriate handling
to user.
Open-circuit or short-circuit in wiring
of light receiving section.
Check if wires of light receiving
section are caught.
Wires of light receiving section
should not have any damage
caused by pinching.
Replace wires of light
receiving section.
Defective light receiving unit.
Check signal receiving circuit Tester indicator should move
when signal is received.
Replace PCB.
Dew condensation on light receiving
unit.
Check for water and rust. Signal should be received within
range specified in manual.
Take moisture-proof measure
for lead wire outlet of light
receiving section.
5. Vane do not move
Main cause Inspection method Normal value/condition Remedy
Caught in sliding section. Operate to see if vane are caught
in place.
Vane should operate smoothly.
Remove or correct catching
section.
Disconnected connector (CN5 on
relay PCB, louver motor side)
Inspect connectors. Connectors or pins should not
be disconnected.
Install correctly.
Contact of solder on PCB(connector
section on PCB)
Check visually. There should not be solder
contact.
Correct contacting section.
6. Compressor does not start
Main cause Inspection method Normal value/condition Remedy
Erroneous inter-unit connection. Check wiring between indoor and
outdoor units.
Terminal board 1-N: 230 VAC,
50 Hz
Correct wiring.
DamageD IPM Check IPM continuity Replace IPM
Main cause Inspection method Normal value/condition Remedy
Blown outdoor unit fuse. Check 20-A fuse.Check 15-A fuse. Fuse should not be blown. Replace fuse.
Replace outdoor unit PWB
assembly.
Power supply voltage is too low. Measure power supply voltage
during startup.
220± 10 VAC, 50 Hz Make sure that power supply
voltage is 198 V or higher.
Compressor lock. Supply current and touch com-
pressor cover (sound absorbing
material) to check if operation
starts.
Compressor should start nor-
mally.
Apply external impact to
compressor.Replace
compressor.
3-7
Page 36
SHARP(CHINA) INVESTMENT CO., LTD
[5] MALFUNCTION (PARTS) CHECK METHOD
1. Procedure for determining defective outdoor unit IPM/compressor
The following flow chart shows a procedure for locating the cause of a malfunction when the compressor does not start up and a DC overcurrent
indication error occurs.
No No
d
Yes Yes
No
Yes
Yes
No
No
Yes
No No
Yes
No
Normal
Use the remote operate
the air conditioner
Compressor starts up
Does indoor unit LED
display error code
Normal
P9 Does compressor start up
Does the wire
conector right
conectes wire
again
Replace the
inverter PCB
Does low or high press valve
open
Open
Operates again after 3 mins
Normal Replace compressor
P0
Does compressor start
Does the wire
conector right
conectes wire
agrin
Check indoor heat excharge
and outdoor heat excharge
Clean indoor heat
excharge or outdoor
Check the refrigerant
amount
Check the installation
condition
Installation again
Replace the inverter PCB
3-8
Page 37
SHARP(CHINA) INVESTMENT CO., LTD
6. DC Over Current Error
No
No
No
Heating mode
error memory isrecorded.
Start
Are valves(2-way and
3-way) close?
Does compressor rotate?
Fully open stop valves
Does compressor rotate more
than 30 seconds?
Check IPM lead
wire.(UVW)
Check IPM short
circuit.
Check compressor
terminal.
Replace PWB
Does compressor
rotate?
Replace Compressor
Modify the connection of compressor
lead wire on PWB.
Replace P WB.
Modify compressor terminal marking.
Yes
Yes
Abnormal
Abnormal
Abnormal
Is IPM PWB floating from the
heat sink?
No
Check the AC power supply
voltage when compressor
rotate.(rated voltage±10%)
normal
normal
normal
No
Cooling mode?
Check outdoor exchanger
termistor and discharge
thermistor.
Modify or replace termistor.
Check indoor exchanger
thermistor and
discharge
thermistor.
Modify or replace termistor.
Check indoor heat
exchanger.
normal
Check outdoor heat
exchanger.
Clean indoor heat
exchanger.
Clean indoor heat exchanger.
Check the refrigerant amount.
Check the discharge pressure. Check the installation condition.
Fix IPM PWB with screws securely.
Yes
Yes
normal
Yes
Abnormal
Abnormal
normal
3-9
Page 38
SHARP(CHINA)INVESTMENT CO.,LTD
[6] CHART
1. The failure code display(indoor unit)
lamp rotacidnI noitcnuF epyT tluaF Digital LED display
0E tluaf noitacinummoc roodtuo/roodnI
CE tluaf noitacinummoc roodtuO
1E )TRI( rosnes erutarepmet mooR
2E )TPI( rosnes erutarepmet )lioc( epip roodnI
3E )TPO( rosnes erutarepmet )lioc( epip roodtuO
5E gnorw noitarugifnoc ledoM
6E tluaf rotom naf roodnI
7E rosnes erutarepmet ria roodtuO
8E rosnes erutarepmet egrahcsiD
9E tluaf eludom dna evird fo MPI
FE )rotoM CD( tluaf rotom naf roodtuO
AE tluaf rosnes tnerruC
EE tluaf MORPEE
PE )rosserpmoc eht fo pot no( tluaf hctiws erutarepmeT
UE tluaf rosnes egatloV
HE rosnes erutarepmet ekatnI
2. The failure code display
2.1. Outdoor power supply PCB
Blink times(n) Fault Message Blink times(n) Fault Message
1 etats tsorfeD 71 noitcetorp MPI
/ tiucric-trohS 81 egatlovrednu / egatlovrevO 2 open-circuit fault of intake temperature
sensor
3
Over current
19 Outdoor EEPROM fault
4
Exhaust overtemperature protection
20 Outdoor fan motor protection
5 Outdoor coil overtemperature protection 21 Indoor fan motor protection
noerF fo egatrohs ni metsyS 32 noitcetorp erutluaf evirD 6
7 Communication fault with indoor unit 24 Model configuration wrong
8 Compressor overheat fault (compressor
top switch)
25 Indoor sensor fault
9 Short-circuit / open-circuit fault of outdoor
temperature sensor
26 Indoor coil sensor fault
10
Short circuit / open-circuit fault of outdoor
heat exchanger temperature sensor
27 Indoor EEPROM fault
11 Short-circuit / open-circuit fault of
discharge temperature sensor
28 Indoor fan motor fault
tluaf evird roodtuO 03 tluaf rosnes egatloV 21
13 tluaf rosnes tnerruC 31
Outdoor environmental Overtemperature/
undertemperature protection
noitneverp tsrofed lioc roodnI 23 tluaf MPI 41
15 communication fault between power
source board and intelligent power module
33 Indoor coil overheating protection
16 No feedback from DC fan motor(outdoor
unit)
3-10
RUN&POWER: ON
RUN&POWER: ON
RUN&POWER: ON
RUN&POWER: ON
RUN&POWER: ON
RUN&POWER: ON
RUN&POWER: ON
RUN&POWER: ON
RUN&POWER: ON
RUN&POWER: ON
RUN&POWER: ON
RUN&POWER: ON
RUN&POWER: ON
RUN&POWER: ON
RUN&POWER: ON
RUN&POWER: ON
(Flashing)
(Flashing)
(Flashing)
(Flashing)
(Flashing)
(Flashing)
(Flashing)
(Flashing)
(Flashing)
(Flashing)
(Flashing)
(Flashing)
(Flashing)
(Flashing)
(Flashing)
(Flashing)
(The lamp on the outdoor PCB)
Page 39
SHARP(CHINA)INVESTMENT CO.,LTD
2.2. Outdoor IPM
Flash times(n) Fault Message Blink times(n) Fault Message
erutliaf rosserpmoc fo tnerruc esahp ehT 31 erutliaf/noitcetorp MPI 1
draob ecruos rewop neewteb tluaf noitacinummoc 51 egatlov rewol/hgihrevo CD 2
and intelligent power module
3 Overcurrent of compressor
2.3. Protection Code
yalpsid DEL latigiD )hsalf( rotacidnI noitcnuF epyT noitcetorP
1P ces 8/ emit 1 :REMIT ; gniralF :NUR noitcetorp egatlovrednu / egatlovrevO
2P ces 8/ semit 2 :REMIT ;gniralF :NUR noitcetorp tnerrucrevO
Exhaust overtemperature protection RUN: Fl 4P ces 8/ semit 4 :REMIT ;gnira
Subcooling protection under cooling mode RUN: 5P ces 8/ semit 5 :REMIT ;thgirB
Overheating protection under cooling mode RUN: 6P ces 8/ semit 6 :REMIT ;thgirB
Overheating protection under heating mode RUN: 7P ces 8/ semit 7 :REMIT ;thgirB
8P ces 8/ semit 8 :REMIT ;thgirB :NUR noitcetorp erutarepmet rednu /revo roodtuO
9P ces 8/ semit 9 :REMIT ;gniralF :NUR ) lortnoc erawtfos( noitcetorp evirD
Module protection (hardware control) RUN: 0P ces 8/ semit 01 :REMIT ;gniralF
[7] Trouble shooting Guide
According to the fault code
1. Display E1 or E2
2E ro 1E yalpsiD motpmys melborP
egnahcxe roodnI dna )TRI( rotsimreht erutarepmet mooR esuaC
temperature thermistor (IPT) fault
noitcA sisongaid fo tnetnoC .oN noitcnuflaM
1 Contact between indoor room and exchange
temperature thermistor CN6 (RT, IPT) and slot
Insert again if loose.
2 Measure the resistance on the two ends of indoor
temperature sensor: (25ć/ 5k). For other
resistance, please refer to the temperature –
Resistance Sheet
Replace the temperature sensor if the resistance is incurred to drift,
open or short circuiting.
R lamron si gnitset evoba eht fI 3 eplace the indoor control board
3-11
Display on outdoor power source board: The indicator alerts the fault in a cycle as such that it is bright for 0.5 seconds, dark for 0.5
seconds, flases”n” times and then dark for 3 seconds.
Page 40
SHARP(CHINA)INVESTMENT CO.,LTD
2. Display E6
6E yalpsiD motpmys melborP
tluaf rotom naf roodnI esuaC
noitcA sisongaid fo tnetnoC .oN noitcnuflaM
1 Check the indoor cross-flow fan blade If the fan does not run, readjust the fan position until it can run
smoothly.
2 If the motor insert (CN3, CN4) on indoor main PCB is in
good contact with the slot
Insert again if loose.
ni ecnaticapaC eulav ecnaticapac putratS 3 correct. Replace with a new capacitor.
BCP niam roodni eht ecalpeR lamron era snoitcepsni evoba ehT 4
3. Display E3, E7, E8
8E ,7E ,3E yalpsiD motpmys melborP
ria roodtuo dna rotsimreht erutarepmet egnahcxe roodtuO esuaC
temperature thermistor and discgarge temperature sensor fault
noitcA sisongaid fo tnetnoC .oN noitcnuflaM
1 If the temperature sensor on outdoor power source
board is in good contact with the slot (CN1, CN2)
Insert again if loose.
2
Measure the resistance on the two ends of outdoor
temperature thermistor:
Resistance of CN1 terminal thermistor (25ć / 5k). For
other resistance, please refer to the temperature –
Resistance Sheet. Resistance of CN2 terminal
thermistor(25ć / 20k). For other resistance, please
refer to the discharge temperature thermistor resistance
sheet.
Replace the temperature sensor if the resistance is incurred to
drift, open or short circuiting.
draob ecruos rewop roodtuO lamron si gnitset evoba eht fI 3
4. Display EA
Problem symptom
Display EA
Cause Current sensor fault
noitcA sisongaid fo tnetnoC .oN noitcnuflaM
Find the leakage point and recharge the refrigerant 1 Check for refrigerant leakage
Replace the outdoor power source board
3-12
Page 41
SHARP(CHINA)INVESTMENT CO.,LTD
5. Display EC
Problem symptom Display EC
Cause Outdoor communication fault between power source board and
intelligent power module
Malfunction No. Content of diagnosis Action
1 Check the contact of communication wire (CN5)
between power source board and intelligent power
module
Insert again if loose.
The indicator on power
source board flare normal
(bright for 1 second and dark
for 1 second), but the
indicator on intelligent power
module does not work
normally
Replace the intelligent power
module
If the fault remains unsolved,
replace the power source board
again.
2 After the complete
unit is energized,
check the indicators
on outdoor power
source board and
intelligent power
module
The indicator on intelligent
power module flare normal
(bright for 1 second and dark
for 1 second), but the
indicator on power source
board does not work normally
Replace the power source
board
If the fault remains unsolved,
replace the intelligent power
module again.
You can check each voltage of the electrical board communication pin, the normal data is as the following:
Pin 1 2 3 4 5 6
Voltage(V)
5 1.0-4.8 1.8-4.1 2.6 earthing 15
Outdoor communication circuit
3-13
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SHARP(CHINA)INVESTMENT CO.,LTD
6. Display EU
Problem symptom Display EU
Cause Voltage sensor fault
Malfunction No. Content of diagnosis Action
Insert again if loose. 1 The outdoor power source bord can’t check the
voltage, check the votage lower or higher than the
protector voltage .
Replace the outdoor power source board
voltage sampling circuit
7. Display EP
Problem symptom Display EP
Cause Temperature switch fault ( on top of the compressor)
Malfunction No. Content of diagnosis Action
Check the insert position CN3 of the compressor
top temperature switch wires on outdoor power
source board
Insert again if loose. 1
No switch on compressor top Jumper short-circuiting (This function not provided for 1 – 1.5P unit)
Check the U, V and W wires of
the compressor.
The correct sequence of U. V and W wiring shall be “red, white and
blue”. Connect again if incorrect.
Check the system pressure. The pressure is low. Add refrigerant to ensure the system pressure
is normal.
2 Compressor
temperature. The
temperature is
very high,
accompanied
with bad smell.
Check the outdoor ventilation
and if there is any obstruction
that affects the normal radiating
of the air conditioner.
Install to the position as required in the Installation Manual and
ensure the air inlet and outlet of the outdoor unit is smooth.
If the fault is solved after short circuiting, replace the shell
temperature switch.
3 Compressor temperature: The temperature is not
high. Short circuit CN3.
If the fault remains unsolved after replacing the shell temperature
switch, please replace the outdoor power source board.
8. Display P1
Problem symptom Display P1
Cause Overvoltage / undervoltage protection
Malfunction No. Content of diagnosis Action
1 Test the supply voltage if it is between 160V 260V
˄AC˅.
It is normal protection if exceeding this range.
2
Test if the voltage between L and N terminal of
outdoor unit is within 160V260V˄AC˅.
It is normal protection if exceeding this range.
3 If the voltage is normal: Replace the outdoor power source board
3-14
3-14
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SHARP(CHINA)INVESTMENT CO.,LTD
9. Display E9 (Firstly display P0 or P9, then change to E9)
Problem symptom Display E9 (Firstly display P0 or P9, then change to E9)
Cause Intelligent power module of drive and module fault
Malfunction No. Content of diagnosis Action
If this code is displayed when the compressor is
started for several seconds or even not started,
check the compressor connection for correctness
If no insert wrong, replace the intelligent power module
Check if the outdoor module is
tightly installed onto the radiating
fins and if the silicone is applied
evenly
Fix the screws again if loose.
Check the system pressure. Recharge refrigerant if the pressure is low. Discharge
some refrigerant if the pressure is too high.
Check the outdoor ventilation and if
there is any obstruction that affects
the normal radiating of the air
conditioner.
Install to the position as required in the Insallation
manual and ensure the air inlet and outlet of the outdoor
unit is smooth.
1
Re-energize
and check
the
protection
code on
display.
Firstly
display P0
“P0”
appears
when the
air
conditioner
is working
The above inspections are normal,
but the fault remains unsolved
Replace the intelligent power module
If this code is displayed when the compressor is
started for several seconds or even not started,
check the compressor connection for correctness
If no insert wrong, replace the intelligent power module
When the compressor is restarted immediately
after stop, this might also cause P9 protection
because the cooling system is not stable.
Try starting the air conditioner again after a longer period
of stop
Cooling / heating is normal
during run
Replace the intelligent power module
2 Re-energize
and check
the
protection
code on
display.
Firstly
display P9
P9 appears
after the air
conditioner is
started and
has run for a
period of time
If the cooling / heating is
abnormal, check the
compressor wiring for
correctness.
Insert again if loose.
10. Display EE
Problem symptom Display EE
Cause EEPROM fault
Malfunction No. Content of diagnosis Action
1 Shut off the power and suplyes again,if EE dispay again: Replace outdoor power source board
11. Display P1
Problem symptom Display P1
Cause Overvoltage / undervoltage protection
Malfunction No. Content of diagnosis Action
1 Test the supply voltage if it is between 160V 260V˄AC˅. It is normal protection if exceeding this range.
2 Test if the voltage between L and N terminal of outdoor unit is
within 160V260V˄AC˅.
It is normal protection if exceeding this range.
3 If the voltage is normal Replace the outdoor power source board
12. Display E0ǃE5
3-15
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SHARP(CHINA)INVESTMENT CO.,LTD
0E yalpsiD motpmys melborP E5
tluaf noitacinummoc roodtuo / roodnI esuaC
noitcA sisongaid fo tnetnoC .oN noitcnuflaM
1. Check if the indoor and outdoor connections are
correct. The terminal L and N shall correspond to
each other on indoor and outdoor units. Measure
the voltage on outdoor terminal L and N (before
display of E0 fault). If the voltage is “0”:
Replace the indoor main PCB.
2. If the L & N voltage is normal, measure the
voltage between the outdoor terminal N and 1. If
the voltage change occurs between 0~24V
(change pulse voltage)
Replace the indoor main PCB.
3. If the L & N voltage is normal, measure the
voltage between the outdoor terminal N and 1. If
the voltage change occurs between 0~12V change
pulse voltage), but there is no 24V:
Replace the outdoor power source board.
4. If the L & N voltage is normal, measure the
voltage between the outdoor terminal N and 1. If
the voltage has no change:
Firstly replace the indoor main PCB. If the fault remains
unsolved, replace the outdoor power source board.
1) The indicator is dark: Check IPM
board – Test the pins of rectifier
bridge, fast recovery diode (FRD)
and IGBT elements for any
breakdown, short circuiting or
damage.
2) If no damage, test the DC voltage
between DC+ and DC-. If the voltage
is approx. 310V:
Replace the power source board.
5.
Indicator
on
outdoor
power
source
board
3) If no damage, test the DC voltage
between DC+ and DC-. If the voltage
is zero:
6. If the problem cannot be solved by using the
methods above:
Firstly replace the intelligent power module . If the
problem remains unsolved, replace the indoor main PCB.
Power source board . power factor correction.
1 Energize
and
observe for
approx. 10
minutes. If
E0 is still
displayed or
changed to
E5 after a
period of
time:
7. If this fault appears at the initial installation and
testing of the complete unit
please check if the indoor control board and outdoor
inverter module are of the same generation.
The schematic diagram of Indoor unit communication loop
The schematic diagram of the partial outdoor unit communication loop
3-16
Replace the power source board.
Replace the power source board.
Page 45
SHARP(CHINA)INVESTMENT CO.,LTD
13. Display P4
4P yalpsiD motpmys melborP
noitcetorp erutarepmetrevo egrahcsiD esuaC
noitcA sisongaid fo tnetnoC .oN noitcnuflaM
1 Check if the air inlet and outlet of outdoor unit is blocked by any
obstructions.
Install to the position as required in the Instruction
Manual and ensure the air inlet and outlet of the
outdoor unit is smooth.
tnaregirfer ddA .tnaregirfer fo egatrohs rof metsys eht kcehC 2
3 Check if the exhaust temperature sensor is drifted, short circuited or
open circuited. (25ć/20k). For other resistances, please refer to
the Exhaust Temperature Sensor – Resistance Sheet)
Replace the exhaust temperature sensor
draob ecruos rewop roodtuo eht ecalpeR degamad draob lortnoC 4
14. Display P2
2P yalpsiD motpmys melborP
noitcetorp tnerrucrevO esuaC
noitcA sisongaid fo tnetnoC .oN noitcnuflaM
1 Check if the outdoor fan motor is stopped due to overheat
protection, or damaged, and if the fan capacitor is damaged.
Replace the fan capacitor,replace the outdoor power
source board and the damaged outdoor fan motor.
15. Display P5
5P yalpsiD motpmys melborP
edom gnilooc rednu noitcetorp gniloocbuS esuaC
noitcA sisongaid fo tnetnoC .oN noitcnuflaM
1 Check if the air inlet and outlet of indoor unit is blocked by any
obstructions.
Install to the position as required in the Installation manual
and ensure the air inlet and outlet of the outdoor unit is
smooth.
2 Check the system for shortage of refrigerant. Add refrigerant
3 Check if the exhaust temperature sensor is drifted, short
circuited or open circuited. (Measure the resistance of the
resistors on two ends of indoor temperature sensor: (25ć /
5k). For other resistances, please refer to the Temperature –
Resistance Sheet.
Replace room temperature sensor (IRT) and Indoor pipe
(coil) temperature sensor (IPT)
draob lortnoc roodni eht ecalpeR degamad draob lortnoC 4
16. Display P6
6P yalpsiD motpmys melborP
cetorp gnitaehrevO esuaC tion under cooling mode
noitcA sisongaid fo tnetnoC .oN noitcnuflaM
1 Check if the air inlet and outlet of outdoor unit is blocked by any
obstructions.
Install to the position as required in the Installation manual
and ensure the air inlet and outlet of the outdoor unit is
smooth.
2 Check the system for shortage of refrigerant. Add refrigerant
3 Check if the outdoor evaporator coil temperature sensor is
drifted, short circuited or open circuited (25 /5K). For other ć
resistance, please refer to the Temperature – Resistance
Sheet.
Replace the outdoor coil temperature sensor
draob ecruos rewop roodtuo eht ecalpeR degamad draob lortnoC 4
3-17
Page 46
SHARP(CHINA)INVESTMENT CO.,LTD
17. Display P7
Problem symptom
Display P7
Cause
Overheating protection under heating mode
noitcA sisongaid fo tnetnoC .oN noitcnuflaM
1
Check if the air inlet and outlet of outdoor unit is blocked by any
obstructions.
Install to the position as required in the Installation manual
and ensure the air inlet and outlet of the outdoor unit is
smooth.
2
Check the system for shortage of refrigerant.
Add refrigerant
3
Check if the indoor exchange temperature thermistor is drifted,
short circuited or open circuited. (Measure the resistance of the
resistors on two ends of indoor temperature thermistor: (25ć /
5k). For other resistances, please refer to the Temperature –
Resistance Sheet.
Replace the Indoor exchange temperature thermistor(IPT)
4
draob lortnoc roodni eht ecalpeR degamad draob lortnoC
18. Display P8
Problem symptom
Display P8
Cause
Outdoor air temperature over/under protection
noitcA sisongaid fo tnetnoC .oN noitcnuflaM
1
The compressor cannot run under cooling mode when the
outdoor temperature is lower than -1 , or run ć under heating
mode when the outdoor temperature is higher than 33 , whilst ć
the compressor alarms P8 protection.
Normal protection function
2
If the temperature is not within the protective range above,
please refer to the Temperature – Resistance Sheet (See
Appendix). Use the multimeter to measure the resistors on the
two ends of outdoor intake temperature sensor (CN1)
(25ć/5k). For other resistance, please refer to the
Temperature – Resistance Sheet.
Replace the sensor if it is incurred to drift, open circuiting
or short circuiting.
3 If the fault remains unsolved after replacement of the sensor Replace the outdoor power source board
19. Display P9
Problem symptom
Display E9 (Firstly display P0 or P9, then change to E9)
Cause
Intelligent power module of drive and module fault
noitcA sisongaid fo tnetnoC .oN noitcnuflaM
If this code is displayed when the compressor is
started for several seconds or even not started,
check the compressor connection for
correctness.
Replace the intelligent power module.(Be sure to apply
silicone when replacing the intelligent power module.).
Cooling/heating is normal
during run
Insert again if loose
P9 appears
after the air
conditioner is
started and
has run for a
period of time
If the cooling / heating are
abnormal, check the
compressor wiring for
correctness.
Insert again if loose
1
Re-energize
and check the
protection
code on
display.
Firstly display
P9
When the compressor is restarted immediately
after stop, this might also cause P9 protection
because the cooling system is not stable.
Try starting the air conditioner again after a longer
period of stop
3-18
Page 47
SHARP(CHINA)INVESTMENT CO.,LTD
CHAPTER 4. REFRIGERATION CYCLE
[1] SCHEMATIC DIAGRAM
[2] STANDARD CONDITION
Indoor side Outdoor side
Dry-bulb Temp. (°C) Relative Humidity (%) Dry-bulb Temp. (°C) Relative Humidity (%)
Cooling 27 47 35 40
Heating 20 7 87
[3] TEMPERATURE AT EACH PART AND PRESSURE IN 3-WAY VALVE
NOTE
1)Indoor fan speed: Hi
2)Vertical adjustment louver "front”, Horizontal adjustment louver "level"
3)Indoor air temp. : Cooling 27°C, Heating 20°C
4)Power source : 230V, 50Hz
5)Compressor speed : Rated frequency
4-1
Page 48
SHARP(CHINA)INVESTMENT CO.,LTD
AY-XP9PSR/AE-XP9PSR
1.1. At Cooling 1.2. At Heating
AY-X12PSR/AE-X12PSR
1.1. At Cooling 1.2. At Heating
4-2
㪌㪇㪇㩷
㪌㪌㪇㩷
㪍㪇㪇㩷
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㪎㪇㪇㩷
㪉㪇 㪉㪌 㪊㪇 㪊㪌 㪋㪇 㪋㪌
㪠㫅㫇㫌㫋㩷㩿㪮㪀
㪦㫌㫋㫊㫀㪻㪼㩷㪸㫀㫉㩷㫋㪼㫄㫇㪅㩷䋨㷄䋩
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㪄㪈㪇 㪄㪌 㪇 㪌 㪈㪇 㪈㪌
㪟㪼㪸㫋 㫀㫅㪾㩷㪺㪸㫇㪸㪺 㫀㫋㫐㩷㩿㫂㪮㪀
㪦㫌㫋㫊㫀㪻㪼㩷㪸㫀㫉 㩷㫋㪼㫄㫇 㪅㩷㩿㷄㪀
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㪉㪇 㪉㪌 㪊㪇 㪊㪌 㪋㪇 㪋㪌
㪠㫅㫇㫌㫋㩷㩿㪮㪀
㪦㫌㫋㫊㫀㪻㪼㩷㪸㫀㫉㩷㫋㪼㫄㫇㪅㩷䋨㷄䋩
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㪐㪇㪇㩷
㪈㪇㪇㪇㩷
㪈㪈㪇㪇㩷
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㪄㪈㪇㪄㪌㪇 㪌㪈㪇㪈㪌
㪠㫅㫇㫌㫋㩷㩿䌗㪀
㪦㫌㫋㫊㫀㪻㪼㩷㪸㫀㫉㩷㫋㪼㫄㫇㪅㩷㩿㷄㪀
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㪄㪈㪇 㪄㪌 㪇 㪌 㪈㪇 㪈㪌
㪟㪼㪸㫋 㫀㫅㪾㩷㪺㪸㫇㪸㪺 㫀㫋㫐㩷㩿㫂㪮㪀
㪦㫌㫋㫊㫀㪻㪼㩷㪸㫀㫉㩷㫋㪼㫄㫇㪅㩷㩿㷄㪀
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㪊㪅㪇㩷
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㪉㪇 㪉㪌 㪊㪇 㪊㪌 㪋㪇 㪋㪌
㪚㫆㫆㫃㫀㫅㪾㩷㪺㪸㫇㪸㪺㫀㫋㫐㩷㩿㫂㪮㪀
㪦㫌㫋㫊㫀㪻㪼㩷㪸㫀㫉㩷㫋㪼㫄㫇㪅㩷䋨㷄䋩
Page 49
SHARP(CHINA) INVESTMENT CO., LTD
CHAPTER 5. DISASSEMBLY PROCEDURE
If, in carrying out repairs and modifications, the work requires the use of arc- and flame-producing apparatus, such as welding, brazing and
solderingequipment, this work shall only be started after the rooms have been thoroughly ventilated. While the work is being carried out, the
mechanical venti-lation, if any, shall be kept in constant operation and all windows and doors kept open. In the case of repair s to parts of the
refrigerant circuit, it maybe necessary that not only the workman but also a second person shall be present for observation and
assistance.Necessary protective equipment shall be available and, in the case of open flames or arcs, fire extinguishing apparatus shall be ready to
hand.Welding and brazing shall be carried out by qualified workmen.
[1] INDOOR UNIT
1) Open the open panel and remove it.
2) Remove a screw fixing the cord holder.
3) Remove the cord holder.
4) Loosen the screws on the terminal board and remove the unit-tounit
wiring connected with the board.
5) Slide out the 2 air filters.
6) Remove 5 screws fixing the front panel.
5-1
Page 50
SHARP(CHINA) INVESTMENT CO., LTD
7) Unfasten the front panel and pull forward it slightly. (4 circled spotsin
the picture are hooked.)
Open the horizontal louver.
Horizontal Louver
Pull the front panel toward in the direction shown the picture.
8) Remove the thermistor suppertor and the thermistor clip.Remove a
screw fixing the earth wire.
9) Remove the screw fixing on the control box cover from the control
box and pull it away.
10) Remove the 3 screw and the 5 connectors and remove the control
box.
Another one is iner
Back
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11) Remove the horizontal louver fromcabinet while warping.
12) Remove the two screw and remove the vane motor.
b) Remove the tube cover.
•Insert the (–) screwdriver to A hole, D clip and then lean it to theright
as lifting B part.
c) Remove the evaporator from the cabinet.
•Take off the catch of the tube cover from the plate and movethe evapo
13) Remove the water drainge assembly and take off .
14)
a) Remove the 4 screws fixing the side left and side right.
D
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15) Loosen the screw of cross flow fan and separate the cross flow fan
and the fan motor
When assembling them, insert the motor shaft in the boss of thecross
flow fan to the ring position.
[2] OUTDOOR UNIT
1)The fixed screw of control box cover is removed and control
boxcover is removed.
3) The 2 screws on the left-hand side of top plate ass’y is removed.
2)The 2 screws on the right-hand side of top plate ass’y is removed.
4)The screw on the left-hand side of grille is removed
Ring
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SHARP(CHINA) INVESTMENT CO., LTD
5)The screw on the right-hand side of front panel is removed
6)The screw on the left-hand side of front panel is removed
7) The 3 screws of the front of a front panel is removed.
8)The 5 screws on the right-hand side of right plate is removed.
9) Unscrew the 4 screws on the back side of of right plate and removed
the right plate.
10) Unscrew the 4 screws on the side left grille and removed the left
grille.
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SHARP(CHINA) INVESTMENT CO., LTD
11) Remove the connectors and reactor in the control box.
12)Remove the 2 screws fixed the control box.
13) Remove the 3 screws fixed the bulkhead plate.
14) Remove the compressor covers 1 and 2.
15) Remove the nut, and remove the terminal cover.
16) Remove the lead wire and the cover gasket.
17) Remove the compressor cover.
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18) Remove the 3 thermistors.
19) Thermistor position.
20) Remove the outdoor fan.
19) Unscrew the 2 screws and remove the motor angle.
[3] CONTROL BOX
1.Control unit box's Approach to decomposition.
1) Take off lead wires from terminal assembly.
(Blue wire,Brown wire,Black wire)
2) Take off screw (earth).
Take off earth lead wire(green/yellow) from electronic box.
3) Take off box cover.
4) Take off screws 6 PCS)
Discharge Temp.
Outside air Temp.
Outside pipe Temp.
Box cover
5-7
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40
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7-1
CHAPTER7.INSTALLATION MANUL
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7-2
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7-3
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7-4
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6-1
CHAPTER 6. OPERATION MANUAL
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6-2
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13
3
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6-3
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6-4
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24
18
46
21
27
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6-5
Page 65
PARTS GUIDE
CONTENTS
Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these
parts with specified ones for maintaining the safety and performance of the set.
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
AY-X9PSR/AY-12PSR
ROOM AIR CONDITIONER
AY-X9PSR
MODEL
AY-X12PSR
OUTDOOR UNIT
INDOOR UNIT
PartsGuide
[1] INDOOR UNIT PARTS
[2] ACCESSORY PARTS
[3] INDOOR PACKING PARTS
[4] OUTDOOR UNIT PARTS
[5] OUTDOOR PACKING PARTS
AE-X9PSR
AE-X12PSR
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SHARP(CHINA) INVESTMENT CO., LTD
[1] INDOOR UNIT PARTS
AY-X9PSR/AY-X12PSR
1
2
3
4
5
6
7
8
9
10
11
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
2
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SHARP(CHINA) INVESTMENT CO., LTD
AY-X9P S R
No. Part No. Part Name Q’ty Remark
1 PPLTNA161JBWZ Installation Plate 1
1 esaB AFBJ476A-SHCL 2
1 naF ssorC ZKBJ551ACNAFN 3
1 tnuoM gniraeB ZEBJ570A-GRBN 4
1 rotaropavE ZKBJ285A-AVED 5
6 CSRA-A896JBKZ Water Drainage Assembly 1
7 MLOV-A588JBFA Vertical Vane Assembly 2
1 emarF ecaF AFBJ024A-KAWG 8
3 revoC wercS AFBJ882B-DLHL 9
2 retliF riA AEBJ982AMLIFP 01
1 lenaP tnorF ARBJ413B-LNPH 11
12 QACC-A362JBZZ Power Supply Cord 1
1 enaV AFBJ985A-VOLM 31
1 esoH eganiarD ZEBJ760A-SOHP 41
15 CDECQA084JBKZ Display PCB Cover 1
1 BCP yalpsiD ZZBJ721ASDCLR 61
17 HDECQA533JBFA Display PCB Box 1
1 pmalC elbaC AFBJ982B-DLHL 81
1 BCP niaM ZKBJ991F-YGSD 91
1 xoB lacirtcelE ZKBJ651A-XOBD 02
1 rotoM enaV ZEBJ645BLTOMC 12
1 redloH rosneS ZFBJ092B-DLHL 22
1 rotoM roodnI ZEBJ745BLTOMC 32
24 PCOV-C123JBFZ Indoor Motor Cover 1
1 remrofsnarT ZZBJ070AWNRTR 52
26 RH-HXA191JBZZ Indoor Sensor Assembly 1
27 PCOV-C124JBFZ In And Out Pipe Fixer 1
3
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SHARP(CHINA) INVESTMENT CO., LTD
AY-X12PSR
No. Part No. Part Name Q’ty Remark
1 PPLTNA161JBWZ Installation Plate 1
1 esaB AFBJ476A-SHCL 2
1 naF ssorC ZKBJ551ACNAFN 3
1 tnuoM gniraeB ZEBJ570A-GRBN 4
1 rotaropavE ZKBJ385A-AVED 5
6 CSRA-A896JBKZ Water Drainage Assembly 1
7 MLOV-A588JBFA Vertical Vane Assembly 2
1 emarF ecaF AFBJ024A-KAWG 8
3 revoC wercS AFBJ882B-DLHL 9
2 retliF riA AEBJ982AMLIFP 01
1 lenaP tnorF ARBJ413B-LNPH 11
12 QACC-A362JBZZ Power Supply Cord 1
1 enaV AFBJ985A-VOLM 31
1 esoH eganiarD ZEBJ760A-SOHP 41
15 CDECQA084JBFA Display PCB Cover 1
16 RLCDSA127JBZZ Display PCB(Digital) 1
17 HDECQA533JBFA Display PCB Box 1
1 pmalC elbaC AFBJ982B-DLHL 81
19 DSGY-F199JBKZ Main PCB(Digital) 1
1 xoB lacirtcelE ZKBJ651A-XOBD 02
1 rotoM enaV ZEBJ645BLTOMC 12
1 redloH rosneS ZFBJ092B-DLHL 22
1 rotoM roodnI ZEBJ745BLTOMC 32
24 PCOV-C123JBFZ Indoor Motor Cover 1
1 remrofsnarT ZZBJ070AWNRTR 52
26 RH-HXA191JBZZ Indoor Sensor Assembly 1
27 PCOV-C124JBFZ In And Out Pipe Fixer 1
4
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[2] ACCESSORY PARTS
ACCESSORY PARTS
No. Part No. Part Name Q’ty Remark
1
2
3
1
INDOOR PACKING PARTS
No. Part No. Part Name Q’ty Remark
1
SPADBA703JBEZ Left Foaming
t Foaming
1
2
1
3
SPAKCE433JBEZ Indoor
Carton
1
1
2
3 (4)
1
2
3
SPADBA703JBEZ Right Foaming
SPAKCE466JBEZ Indoor Carton
4
1
for AY-X9PSR
for AY-X12PSR
REMOTE CONTROL
INSTALLTION MANUAL
OPERATION MANUAL
1
1
CRMC-A891JBEZ
TINSJB281JBRZ
TINSJB280JBRZ
[3] INDOOR UNIT PARTS
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SHARP(CHINA) INVESTMENT CO., LTD
[4] OUTDOOR UNIT PARTS
AE-X9PSR/AE-X12PSR
27
1
2
3
4
5
6
7
8
9
10
11 12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
28
29
6
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SHARP(CHINA) INVESTMENT CO., LTD
AE-X9PSR
No. Part No. Part Name Q’ty Remark
1 revoc poT ZKBJ795A-BACC 1
1 resnednoC ZPBJ487A-NoCD 2
3 LANGKA345JBPZ Outdoor motor supporter 1
1 rotom roodtuO ZEBJ845BLToMC 4
1 naf relleporP ZEBJ451APNAFN 5
1 retroppus ellirg tfeL ATBJ099A-TLPP 6
1 ellirg tfeL AEBJ510AUDAGG 7
1 etalp tnorF ATBJ684A-BACG 8
1 draug naF AFBJ820APDAGG 9
10 FCMPRA374JBKZ Compressor and accessories 1
1 evlav yaw-4 ZKBJ103A-VLVF 11
12 CVLV-B263JBKZ 4-way valve assembly 1
1 esaB ZYBJ314B-SHCC 31
1 etalp thgiR ATBJ199A-TLPP 41
1 evlav yaw-owT ZKBJ624B-VLVD 51
1 retroppus evlaV ZPBJ299A-TLPP 61
1 evlav yaw-eerhT ZKBJ524B-VLVD 71
1 revoc xob lacirtcelE AFBJ530APDNHJ 81
1 pmalc elbaC ZFRS10AA-DLHL 91
1 lanimreT ZWBJ403A-iADP 02
1 xob lacirtcelE ZPBJ406A-XoBP 12
1 draob ecruos rewoP ZZBJ790AZNATQ 22
1 eludom retrevnI ZKBJ012F-YGSD 32
1 rotaidaR ZPBJ443AKGNAL 42
this is assembly
1 rotcudnI ZZBJ950AZLiCR 52
26 RH-HXA194JBZZ Pipe Temp. sensor and outdoor
Temp. sensor
1
27 RH-HXA195JBZZ Discharge Temp. sensor 1
1 etalp noititraP ZPBJ324A-RKSP 82
1 ylbmessa yrallipaC ZKBJ333A-YPCC 92
7
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SHARP(CHINA) INVESTMENT CO., LTD
AE-X12PSR
No. Part No. Part Name Q’ty Remark
1 revoc poT ZKBJ795A-BACC 1
1 resnednoC ZPBJ587A-NOCD 2
3 LANGKA345JBPZ Outdoor motor supporter 1
1 rotom roodtuO ZEBJ845BLTOMC 4
1 naf relleporP ZEBJ451APNAFN 5
6 PPLT-A990JBTA Left grille supporter 1
1 ellirg tfeL AEBJ510AUDAGG 7
1 etalp tnorF ATBJ684A-BACG 8
1 draug naF AFBJ820APDAGG 9
10 FCMPRA375JBKZ Compressor and accessories 1
1 evlav yaw-4 ZKBJ103A-VLVF 11
12 CVLV-B264JBKZ 4-way valve assembly 1
1 esaB ZYBJ314B-SHCC 31
1 etalp thgiR ATBJ199A-TLPP 41
1 evlav yaw-owT ZKBJ624B-VLVD 51
1 retroppus evlaV ZPBJ299A-TLPP 61
1 evlav yaw-eerhT ZKBJ724B-VLVD 71
18 JHNDPA035JBFA Electrical box cover 1
1 pmalc elbaC ZFRS10AA-DLHL 91
1 lanimreT ZWBJ403A-IADP 02
1 xob lacirtcelE ZPBJ406A-XOBP 12
22 QTANZA098JBZZ Power source board 1
1 eludom retrevnI ZKBJ012F-YGSD 32
1 rotaidaR ZPBJ443AKGNAL 42
this is assembly
1 rotcudnI ZZBJ950AZLiCR 52
26 RH-HXA194JBZZ Pipe Temp. sensor and outdoor
Temp. sensor
1
27 RH-HXA195JBZZ Discharge Temp. sensor 1
1 etalp noititraP ZPBJ324A-RKSP 82
29 CCPY-A334JBKZ Capillary assembly 1
8
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SHARP(CHINA) INVESTMENT CO., LTD
[5] OUTDOOR PACKING PARTS
PACKING PARTS
No. Part No. Part Name Q’ty Remark
1
SPAKCE434JBEZ Cabinet carton
1
2
SPADBA706JBFZ Cover foaming
1
3
SPADBA705JBFZ Base foaming
1
4
SPAKCE435JBEZ Base carton
1
1(5)
2
3
4
9
SPAKCE468JBEZ Cabinet carton
1
5
for AE-X9PSR
for AE-X12PSR
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