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Panasonic CS-XE9SKUA Service Manual

Indoor/outdoor unit
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Table of Contents
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service
or repair the products dealt with in this service information by anyone else could result in serious injury or death.
There are special components used in this equipment which are important for safety. These parts are marked by
Diagrams, Circuit Board Diagrams, Exploded Views and Replacement Parts List. It is essential that these critical parts should be replaced
with manufacturer's specified parts to prevent shock, fire or other hazards. Do not modify the original design without permission of
manufacturer.
In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.
A I R C O N D I T I O N E R
M O D E
A U T O
E C O N A V I
O FF/O N
O FF/O N
C O M F O R T
M O D E
R F P
TEMP
TEMP
POWERFUL/
A IR SW IN G
QUIET
FANSPEED
T I M E R
T I M E R
O N
O N
S E T
S E T
1
1
2
2
3
3
CANCEL
O F F
O F F
AC
RC
CLOCK
SET
CHECK
CHECK
RESET
WARNING
IMPORTANT SAFETY NOTICE
PRECAUTION OF LOW TEMPERATURE
Indoor Unit
CS-XE9SKUA
CS-XE12SKUA
Order No: PAPAMY1601004CE

Air Conditioner

Outdoor Unit
CU-XE9SKUA
CU-XE12SKUA
Destination
U.S.A.
Canada
in the Schematic
!
© Panasonic Corporation 2016.

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  Summary of Contents for Panasonic CS-XE9SKUA

  • Page 1: Air Conditioner

    Do not modify the original design without permission of manufacturer. PRECAUTION OF LOW TEMPERATURE In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit. © Panasonic Corporation 2016.
  • Page 2: Table Of Contents

    TABLE OF CONTENTS 1. Safety Precautions ..........3 15. Troubleshooting Guide ........50 15.1 Refrigeration Cycle System ......50 2. Specifications ............. 5 15.2 Breakdown Self Diagnosis Function ...52 3. Features ............. 11 15.3 Error Codes Table ........53 15.4 Self-diagnosis Method ........55 4.
  • Page 3: Safety Precautions

    1. Safety Precautions  Read the following “SAFETY PRECAUTIONS” carefully before perform any servicing.  Electrical work must be installed or serviced by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit for the model installed. ...
  • Page 4 WARNING During pump down operation, stop the compressor before remove the refrigeration piping. (Removal of compressor while compressor is operating and valves are opened will cause suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, injury etc.) After completion of installation or service, confirm there is no leakage or refrigerant gas.
  • Page 5: Specifications

    2. Specifications Indoor CS-XE9SKUA Model Outdoor CU-XE9SKUA Performance Test Condition Phase, Hz Single, 60 Power Supply Min. Mid. Max. Min. Mid. Max. 0.83 2.55 3.51 0.83 2.55 3.51 Capacity BTU/h 2800 8700 12000 2800 8700 12000 kcal/h – – –...
  • Page 6 Indoor CS-XE9SKUA Model Outdoor CU-XE9SKUA Type Cross-Flow Fan Material ASG33 Motor Type DC / Transistor (8-poles) Input Power 47.0 Output Power Cool Heat Cool Heat Cool Speed Heat Cool 1180 Heat 1190 Cool 1250 Heat 1340 Type Propeller Fan Material...
  • Page 7 Indoor CS-XE9SKUA Model Outdoor CU-XE9SKUA Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 9.52 (3/8) Standard length m (ft) 7.5 (24.6) Length range (min – max) m (ft) 3 (9.8) ~ 20 (65.6) I/D & O/D Height different m (ft) 15.0 (49.2)
  • Page 8 Indoor CS-XE12SKUA Model Outdoor CU-XE12SKUA Performance Test Condition Phase, Hz Single, 60 Power Supply Min. Mid. Max. Min. Mid. Max. 0.83 3.36 4.10 0.83 3.36 4.10 Capacity BTU/h 2800 11500 14000 2800 11500 14000 kcal/h – – – – – –...
  • Page 9 Indoor CS-XE12SKUA Model Outdoor CU-XE12SKUA Type Cross-Flow Fan Material ASG33 Motor Type DC / Transistor (8-poles) Input Power 47.0 Output Power Cool Heat Cool Heat Cool Speed Heat 1100 Cool 1280 Heat 1250 Cool 1350 Heat 1340 Type Propeller Fan Material Motor Type DC (8-poles)
  • Page 10 Indoor CS-XE12SKUA Model Outdoor CU-XE12SKUA Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 12.70 (1/2) Standard length m (ft) 7.5 (24.6) Length range (min – max) m (ft) 3 (9.8) ~ 20 (65.6) I/D & O/D Height different m (ft) 15.0 (49.2) Additional Gas Amount...
  • Page 11: Features

    Features  Inverter Technology Wider output power range Energy saving Quick Cooling Quick Heating More precise temperature control  Environment Protection Non-ozone depletion substances refrigerant (R410A)  Long Installation Piping Long piping up to 65.6ft (20 meters) during single split connection only ...
  • Page 12: Location Of Controls And Components

    4. Location of Controls and Components Indoor Unit Air purifying filter Front panel Auto OFF/ON button Use when remote control is misplaced or a malfunction occurs. Aluminium fin Horizontal airflow direction louver Remote Control Receiver Do not adjust by hand. Distances: 26ft/8m Human activity sensor...
  • Page 13: Dimensions

    5. Dimensions Indoor Unit <Top View> <Side View> <Side View> <Front View> 34-9/32 (870) 10-1/16 (255) Air intake direction 1/16-3/32 (1-2) 1/16-3/32 (1-2) Left piping Air outlet Right piping hole direction hole <Bottom View> <Remote Control> 2-5/16 (59) 7/8 (22) AIRCO N DITIO NER M O DE A U T O...
  • Page 14: Outdoor Unit

    Outdoor Unit <Top View> Space necessary for 34-15/32 (875) 2-25/32 (70) installation 1-3/8 (34.5) 5-3/16 (131) 24-5/32 (613) 5-3/16 (131) 3-15/16 (10 cm) 3-15/16 (10 cm) 43 (100 cm) Anchor Bolt Pitch 14-7/32 (360.5) x 24-5/32 (613) <Side View> <Front View> <Side View>...
  • Page 15: Refrigeration Cycle Diagram

    6. Refrigeration Cycle Diagram INDOOR OUTDOOR LIQUID EXPANSION SIDE MUFFLER VALVE STRAINER 2-WAY PROCESS PIPE VALVE TUBE TEMP. SENSOR 2 TEMP. HEAT SENSOR EXCHANGER INTAKE (CONDENSER) TEMP. PIPE SENSOR TEMP. SENSOR 1 PIPE TEMP. SENSOR HEAT EXCHANGER (EVAPORATOR) SIDE 4-WAYS VALVE 3-WAY RECEIVER VALVE...
  • Page 16: Block Diagram

    7. Block Diagram...
  • Page 17: Wiring Connection Diagram

    8. Wiring Connection Diagram Indoor Unit...
  • Page 18: Outdoor Unit

    Outdoor Unit TO INDOOR UNIT SINGLE PHASE (BLK) (WHT)(RED) REMARKS POWER SUPPLY BLU:BLUE GRY:GRAY BRW:BROWN GRN:GREEN REACTOR TERMINAL BLK:BLACK RED:RED (BLK) (WHT) (RED) BOARD WHT:WHITE YLW:YELLOW YLW/GRN:YELLOW/GREEN L2-I L2-0 COM3 ELECTRONIC CONTROLLER COMMUNICATION (GRAY) (GRAY) (RED) CIRCUIT AC-BLK FUSE2 (BLACK) (T 3.15A L 250V) AC-WHT NOISE...
  • Page 19: Electronic Circuit Diagram

    9. Electronic Circuit Diagram Indoor Unit...
  • Page 20: Outdoor Unit

    Outdoor Unit TO INDOOR UNIT SINGLE PHASE (BLK) (WHT)(RED) POWER SUPPLY REACTOR TERMINAL (BLK) (WHT) (RED) BOARD L2-I L2-0 COM3 ELECTRONIC CONTROLLER (GRAY) COMMUNICATION (GRAY) (RED) CIRCUIT AC-BLK FUSE2 (BLACK) (T 3.15A L 250V) AC-WHT NOISE FUSE3 SWITCHING POWER RECTIFICATION (WHITE) FILTER (20A,...
  • Page 21: Printed Circuit Board

    10. Printed Circuit Board 10.1 Indoor Unit 10.1.1 Main Printed Circuit Board AC303 CN-FM CN-TH CN-STM2 CN-STM1 CN-MSENS CN-RCV CN-STM3 CN-RMT CN-DISP CN-STM4 CN-CNT CN-CLN JP1 (Random Auto Restart enable/disable) 10.1.2 Indicator Printed Circuit Board LED301 LED302 LED304 LED305 LED307 LED306 CN-DISP LED303...
  • Page 22 10.1.3 Receiver Printed Circuit Board CN-RCV 10.1.4 Comparator Printed Circuit Board CN-MSSTM CN-SENS CN-STM 10.1.5 Human Activity Sensor Printed Circuit Board CN-SENS...
  • Page 23: Outdoor Unit

    10.2 Outdoor Unit 10.2.1 Main Printed Circuit Board POWER TRANSISTOR (IPM) CURRENT TRANSFORMER (CT) CN-HOT CN-HT1 CN-DCFM COM3 CN-TANK CN-EV CN-TH1 AC-BLK FG01 AC-WHT...
  • Page 24: Installation Instruction

    11. Installation Instruction 11.1 Select the Best Location 11.1.3 Indoor/Outdoor Unit Installation Diagram 11.1.1 Indoor Unit  Do not install the unit in excessive oil fume area Piping direction Do not bend up (Front side) drain hose such as kitchen, workshop and etc. Right ...
  • Page 25: Indoor Unit

    11.2 Indoor Unit The mounting wall shall be strong and solid enough to prevent it from vibration. Wall Wall Wall More than 1 More than 1 More 2 screw than 2 " (128 mm) DISTANCE TO PIPE HOLE CENTER 128 mm "...
  • Page 26: Indoor Unit Installation

    11.2.2 Indoor Unit Installation Use shock absorber Do not turn over the unit during pulling out without it’s shock absorber the piping to protect during pulling out the piping. the intake grille from It may cause intake grille damage. damage. Piping Piping Shock absorber...
  • Page 27 Replace the drain hose Rear view for left piping installation Connection cable Piping Drain hose More than 45 " (1150 mm) Connection cable Drain hose Drain hose Drain cap Sleeve for piping hole Adjust the piping slightly downwards. • • How to insert the connection cable How to pull the piping and drain hose out, in case and drain hose in the case of left...
  • Page 28: Connect The Cable To The Indoor Unit

    11.2.3 Connect the Cable to the Indoor Unit The inside and outside connection cable can be connected without removing the front grille. Conduit Unscrew the conduit cover and fix the conduit Connector Conduit Cover connector to conduit cover with lock nut, then Lock Nut secure it against chassis.
  • Page 29: Outdoor Unit

    11.3 Outdoor Unit 11.3.1 Install the Outdoor Unit  After selecting the best location, start installation according to Indoor/Outdoor Unit Installation Diagram. Fix the unit on concrete or rigid frame firmly and horizontally with a bolt nut ø13/32" (ø10 mm). When installing at roof, please consider strong wind and earthquake.
  • Page 30: Evacuation Of The Equipment

    11.3.3 Evacuation of the Equipment WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES in the following procedure. Liquid side Indoor unit Two-way valve Outdoor unit Close Gas side Three-way valve Close Vacuum pump Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way...
  • Page 31: Piping Insulation

    Disconnect Outdoor Unit Indoor Unit Switch Field supply 208/230V min AWG16 208/230V min AWG16 208/230V min AWG16 Grounding wire min AWG16 Disconnect Switch Field supply Power Supply Single Phase 208/230V 60Hz min AWG14 Grounding wire Secure the wire onto the control board with the holder (clamper).
  • Page 32 11.3.6 Disposal of Outdoor Unit Drain Water The unit should be mounted on a stand that suits to a local environmental requirement.  When the Drain elbow being used, please ensure to:- Provide a minimum clearance of 2" (50mm) to access the bottom of base pan. Seal the four 25/32"...
  • Page 33: Operation Control

    12. Operation Control 12.1 Basic Function Inverter control, which equipped with a microcomputer in determining the most suitable operating mode as time passes, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operating mode, the microcomputer maintains the set temperature by measuring the temperature of the environment and performing temperature shifting.
  • Page 34: Indoor Fan Motor Operation

    12.1.5 Automatic Operation  This mode can be set using remote control and the operation is decided by remote control setting temperature, remote control operation mode and indoor intake air temperature.  During operation mode judgment, indoor fan motor (with speed of Lo-) is running for 30 seconds to detect the indoor intake air temperature.
  • Page 35: Outdoor Fan Motor Operation

    ii. Auto Fan Speed [Cooling, Dry]  According to room temperature and setting temperature, indoor fan speed is determined automatically.  When set temperature is not achieved, the indoor fan will operate according to pattern below. [1 pattern : 10 s] Speed Higher Medium...
  • Page 36: Airflow Direction

    OD Pipe Temperature 78.8°F (26°C) 91.4°F (33°C)  During above condition, when indoor heat exchanger temperature is below 41°F (5°C), the outdoor fan will stop according to outdoor piping temperature as following: Outdoor fan ON 86°F (30°C) Outdoor fan OFF OD Pipe Temp.
  • Page 37: Quiet Operation (Cooling Mode/Cooling Area Of Dry Mode)

    12.4.2 Horizontal Airflow  Automatic horizontal airflow direction can be set using remote control; the vane swings left and right within the angles as stated below. For heating mode operation, the angle of the vane depends on the indoor heat exchanger temperature as Figure 1 below.
  • Page 38: Powerful Mode Operation

    Quiet operation stop condition  When one of the following conditions is satisfied, quiet operation stops:  POWERFUL/QUIET button is pressed again.  Stop by OFF/ON switch.  Timer “off” activates.  AUTO COMFORT button is pressed.  ECONAVI button is pressed. ...
  • Page 39: Indication Panel

    12.10 Indication Panel POWER TIMER POWERFUL/QUIET ECONAVI AUTO COMFORT Color Green Orange Orange Green Green Green POWERFUL/QUIET AUTO COMFORT Light ON Operation ON Timer Setting ON RFP ON ECONAVI ON Mode ON POWERFUL/QUIET AUTO COMFORT Light OFF Operation OFF Timer Setting OFF RFP OFF ECONAVI OFF Mode OFF...
  • Page 40 12.12.1 Human Activity Sensor  Area of human availability, activity level and absent is judged based on pulses by using infrared sensor. The internal setting temperature shift, fan speed and horizontal airflow direction are adjusted in order to provide comfort environment while maintain the energy saving level. ...
  • Page 41 12.12.1.4 Determination of Presence or Absence  Human presence status shall be determined based on the human presence status of each area.  When all area has been detected absent for more than 40 minutes then it will judge as absence. 12.12.1.5 Setting Temperature and Fan Speed Shift ECONAVI ;...
  • Page 42 12.12.1.7 Human Activity Sensor Abnormality  Abnormality detection:  Connector disconnection / Wire cut abnormality o Sensor judge Hi level continuously for 25 seconds  Circuit abnormality o 70 seconds after power ON, if human activity sensor judge Lo level continuously for 25 seconds ...
  • Page 43: Protection Control

    13. Protection Control 13.1 Protection Control For All Operations 13.1.1 Restart Control (Time Delay Safety Control)  The Compressor will not turn on within 3 minutes from the moment operation stops, although the unit is turned on again by pressing OFF/ON button at remote control within this period. ...
  • Page 44 13.1.4 Compressor Overheating Prevention Control  Instructed frequency for compressor operation will be regulated by compressor discharge temperature. The changes of frequency are as below.  If compressor discharge temperature exceeds 224.6°F (107°C), compressor will be stopped, occurs 4 times per 20 minutes, timer LED will be blinking.
  • Page 45: Protection Control For Cooling & Soft Dry Operation

    13.2 Protection Control For Cooling & Soft Dry Operation 13.2.1 Outdoor Air Temperature Control  The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram below.  This control will begin 1 minute after the compressor starts. ...
  • Page 46: Protection Control For Heating Operation

    13.2.5 Dew Prevention Control 1  To prevent dew formation at indoor unit discharge area.  This control will be activated if: Outdoor air temperature and Indoor pipe temperature judgment by microcontroller is fulfilled. When Cooling or Dry mode is operated more than 20 minutes or more. ...
  • Page 47 13.3.5 Cold Draught Prevention Control  When indoor pipe temperature is low, cold draught operation starts where indoor fan speed will be reduced. 13.3.6 Deice Operation  When outdoor pipe temperature and outdoor air temperature is low, deice operation start where indoor fan motor and outdoor fan motor stop and operation LED blinks.
  • Page 48: Servicing Mode

    14. Servicing Mode 14.1 Auto OFF/ON Button Auto OFF/ON Auto OFF/ON Auto OFF/ON Auto OFF/ON Button pressed Button pressed Button pressed Button pressed 5 sec 5 sec 5 sec Auto Operation Test Run Operation Stop Normal Cooling Operation Stop Test Run Operation Stop (Forced cooling operation) (Forced heating operation)
  • Page 49: Remote Control Button

    REMOTE CONTROL RECEIVING SOUND OFF/ON MODE The Remote Control Receiving Sound OFF/ON Mode will be activated if the Auto OFF/ON button is pressed continuously for more than 16 seconds (4 “beep” sounds will occur at 16th seconds to identify the Remote Control Receiving Sound Off/On Mode is in standby condition) and press “AC Reset”...
  • Page 50: Troubleshooting Guide

    15. Troubleshooting Guide 15.1 Refrigeration Cycle System In order to diagnose malfunctions, make sure that there are no Normal Pressure and Outlet Air Temperature (Standard) electrical problems before inspecting the refrigeration cycle. Gas Pressure Outlet air Temperature Such problems include insufficient insulation, problem with the (kg/cm °F (°C) power source, malfunction of a compressor and a fan.
  • Page 51 15.1.1 Relationship between the condition of the air conditioner and pressure and electric current Cooling Mode Heating Mode Condition of the Electric current Electric current air conditioner Low Pressure High Pressure Low Pressure High Pressure during operation during operation Insufficient refrigerant ...
  • Page 52: Breakdown Self Diagnosis Function

    15.2 Breakdown Self Diagnosis Function 15.2.1 Self Diagnosis Function (Three Digits Alphanumeric Code)  When the latest abnormality code on the main Once abnormality has occurred during operation, unit and code transmitted from the remote the unit will stop its operation, and Timer LED controller are matched, power LED will light blinks.
  • Page 53: Error Codes Table

    15.3 Error Codes Table Diagnosis Abnormality / Abnormality Protection Problem Check location display Protection control Judgment Operation No memory of failure — Normal operation — — Indoor fan only  Indoor/outdoor wire terminal Indoor/outdoor operation can Indoor/outdoor After operation for ...
  • Page 54 Diagnosis Abnormality / Abnormality Protection Problem Check location display Protection control Judgment Operation  Check indoor heat exchanger Indoor high pressure Indoor high pressure  Air filter dirty — — protection protection (Heating)  Air circulation short circuit  Check indoor heat exchanger Indoor operating unit Indoor freeze protection ...
  • Page 55: Self-Diagnosis Method

    15.4 Self-diagnosis Method 15.4.1 H11 (Indoor/Outdoor Abnormal Communication) Malfunction Decision Conditions  During startup and operation of cooling and heating, the data received from outdoor unit in indoor unit signal transmission is checked whether it is normal. Malfunction Caused  Faulty indoor unit PCB.
  • Page 56: Troubleshooting

    15.4.2 H12 (Indoor/Outdoor Capacity Rank Mismatched) Malfunction Decision Conditions  During startup, error code appears when different types of indoor and outdoor units are interconnected. Malfunction Caused  Wrong models interconnected.  Wrong indoor unit or outdoor unit PCBs mounted. ...
  • Page 57 15.4.3 H14 (Indoor Intake Air Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the indoor intake air temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 58 15.4.4 H15 (Compressor Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor compressor temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection.  Faulty sensor.
  • Page 59 15.4.5 H16 (Outdoor Current Transformer) Malfunction Decision Conditions  An input current, detected by Current Transformer CT, is below threshold value when the compressor is operating at certain frequency value for 3 minutes. Malfunction Caused  Lack of gas  Broken CT (current transformer) ...
  • Page 60 15.4.6 H19 (Indoor Fan Motor – DC Motor Mechanism Locked) Malfunction Decision Conditions  The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor (feedback of rotation > 2550rpm or < 50rpm) Malfunction Caused ...
  • Page 61 15.4.7 H23 / H24 (Indoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the indoor heat exchanger temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection.
  • Page 62 15.4.8 H27 (Outdoor Air Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor air temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 63 15.4.9 H28 (Outdoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor pipe temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 64 15.4.10 H30 (Compressor Discharge Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor discharge pipe temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 65 15.4.11 H32 (Outdoor Heat Exchanger Temperature Sensor 2 Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor heat exchanger temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection.
  • Page 66 15.4.12 H33 (Unspecified Voltage between Indoor and Outdoor) Malfunction Decision Conditions  The supply power is detected for its requirement by the indoor/outdoor transmission. Malfunction Caused  Wrong models interconnected.  Wrong indoor unit and outdoor unit PCBs used.  Indoor unit or outdoor unit PCB defective.
  • Page 67 15.4.13 H36 (Outdoor Gas Pipe Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor gas pipe temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 68 15.4.14 H37 (Outdoor Liquid Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor liquid pipe temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 69 15.4.15 H97 (Outdoor Fan Motor – DC Motor Mechanism Locked) Malfunction Decision Conditions  The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor. Malfunction Caused  Operation stops due to short circuit inside the fan motor winding. ...
  • Page 70 15.4.16 H98 (Error Code Stored in Memory and no alarm is triggered / no TIMER LED flashing) Malfunction Decision Conditions  Indoor high pressure is detected when indoor heat exchanger is detecting very high temperature when the unit is operating in heating operation. ...
  • Page 71 15.4.17 H99 (Indoor Freeze Prevention Protection: Cooling or Soft Dry) Error Code will not display (no Timer LED blinking) but store in EEPROM Malfunction Decision Conditions  Freeze prevention control takes place (when indoor pipe temperature is lower than 35.6°F (2°C)) Malfunction Caused ...
  • Page 72 15.4.18 F11 (4-way Valve Switching Failure) Malfunction Decision Conditions  When indoor heat exchanger is cold during heating (except deice) or when indoor heat exchanger is hot during cooling and compressor operating, the 4-way valve is detected as malfunction. Malfunction Caused ...
  • Page 73 15.4.19 F17 (Indoor Standby Units Freezing Abnormality) Malfunction Decision Conditions  When the different between indoor intake air temperature and indoor pipe temperature is above 50°F (10°C) or indoor pipe temperature is below 30.2°F (-1.0°C). Remark: When the indoor standby unit is freezing, the outdoor unit transfers F17 error code to the corresponding indoor unit and H39 to other indoor unit(s).
  • Page 74 15.4.20 F90 (Power Factor Correction Protection) Malfunction Decision Conditions  To maintain DC voltage level supply to power transistor.  To detect high DC voltage level after rectification. Malfunction Caused  During startup and operation of cooling and heating, when Power Factor Correction (PFC) protection circuitry at the outdoor unit main PCB senses abnormal DC voltage level for power transistors.
  • Page 75 15.4.21 F91 (Refrigeration Cycle Abnormality) Malfunction Decision Conditions  The input current is low while the compressor is running at higher than the setting frequency. Malfunction Caused  Lack of gas.  3-way valve close. Troubleshooting When F91 indication happens. For safety reason and to prevent component breakdown, always switch Caution...
  • Page 76 15.4.22 F93 (Compressor Rotation Failure) Malfunction Decision Conditions  A compressor rotation failure is detected by checking the compressor running condition through the position detection circuit. Malfunction Caused  Compressor terminal disconnect  Faulty Outdoor PCB  Faulty compressor Troubleshooting When F93 indication happens.
  • Page 77 15.4.23 F95 (Outdoor High Pressure Protection: Cooling or Soft Dry) Malfunction Decision Conditions  During operation of cooling or soft dry, when outdoor unit heat exchanger high temperature data is detected by the outdoor unit heat exchanger thermistor. Malfunction Caused ...
  • Page 78 15.4.24 F96 (IPM Overheating) Malfunction Decision Conditions  During operating of cooling and heating, when IPM temperature data 212°F (100°C) is detected by the IPM temperature sensor. Multi Models only Compressor Overheating: During operation of cooling and heating, when the compressor OL is activated. Heat Sink Overheating: During operation of cooling and heating, when heat sink temperature data 194°F (90°C) is detected by the heat sink temperature sensor.
  • Page 79 15.4.25 F97 (Compressor Overheating) Malfunction Decision Conditions  During operation of cooling and heating, when compressor tank temperature data 233.6°F (112°C) is detected by the compressor tank temperature sensor. Malfunction Caused  Faulty compressor tank temperature sensor  2/3 way valve closed ...
  • Page 80 15.4.26 F98 (Input Over Current Detection) Malfunction Decision Conditions  During operation of cooling and heating, when an input over-current (X value in Total Running Current Control) is detected by checking the input current value being detected by current transformer (CT) with the compressor running.
  • Page 81 15.4.27 F99 (DC Peak Detection) Malfunction Decision Conditions During startup and operation of cooling and heating, when inverter DC peak data is received by the outdoor internal DC Peak sensing circuitry. Malfunction Caused  DC current peak due to compressor failure. ...
  • Page 82: Disassembly And Assembly Instructions

    16. Disassembly and Assembly Instructions WARNING High Voltage is generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding with repair work. Failure to heed this caution may result in electric shocks. 16.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures 16.1.1...
  • Page 83 Pull out the 10. Detach 8 connectors as labeled from the electronic controller. electronic Then pull out electronic controller gently. controller halfway. AC303 Remove screw to remove terminal CN-FM board complete. CN-TH Detach the connectors CN2 (Black), CN-STM2 GND (Green), and CN1 (White) CN-STM1 then remove the...
  • Page 84: To Remove Cross Flow Fan And Indoor Fan Motor

    16.1.5 To remove cross flow fan and indoor fan motor 15. Remove the screw that holding the cross flow fan and fan motor axis. Figure 7 17. Remove the bearing by pulling it out gently. 16. Remove the screw from the evaporator.
  • Page 85 Cross Flow Fan Reminder: To reinstall the cross flow fan, ensure cross flow fan is in line as shown in figure 10. Figure 10...
  • Page 86: Outdoor Electronic Controller Removal Procedure

    16.2 Outdoor Electronic Controller Removal Procedure Remove the 4 screws of the Top Panel. Remove the Control Board. Screws Release the Hooks Top Panel Control Board Release 6 terminal Screws connectors Release 6 connectors Fig.4 Remove the 8 screws of the Electronic Controller.
  • Page 87: Technical Data

    17.1 Cool Mode Performance Data Unit setting: Standard piping length, Hi Fan, Cool mode at 16°C (60.8°F) Voltage: 208V/230V 17.1.1 CS-XE9SKUA CU-XE9SKUA Rated frequency (compressor speed is fixed during forced heating or cooling for capacity measurement and diagnosis purpose) Indoor (°C / °F) Outdoor (°C / °F)
  • Page 88 17.1.3 CS-XE9SKUA CU-XE9SKUA Maximum Capacity Indoor (°C / °F) Outdoor (°C / °F) -20 (-4.0) -10 (14.0) 0 (32.0) 5 (41.0) 19 (66.2) 2865 2592 2865 2592 2851 2615 2910 2669 (80.6) 22 (71.6) 3027 1842 3027 1842 3046 1869...
  • Page 89: Heat Mode Performance Data

    17.2 Heat Mode Performance Data Unit setting: Standard piping length, Hi Fan, Heat mode at 30°C (86°F) Voltage: 208V/230V 17.2.1 CS-XE9SKUA CU-XE9SKUA Rated frequency (compressor speed is fixed during forced heating or cooling for capacity measurement and diagnosis purpose) Indoor (°C / °F) Outdoor (°C / °F)
  • Page 90: Service Data

    Unit setting: Standard piping length, forced cooling at 16°C (60.8°F), Hi fan  Compressor frequency: Rated for cooling operation  Piping Length: 7.5 m (24.6 ft)  Voltage: 208V/230V 18.1.1 CS-XE9SKUA CU-XE9SKUA 68.0 (20.0) 67.0 (19.4) 66.0 (18.8) 65.0 (18.3) 64.0 (17.7) 63.0 (17.2) 62.0 (16.6) 61.0 (16.1)
  • Page 91 18.1.2 CS-XE12SKUA CU-XE12SKUA 64.5 (18.0) 64.0 (17.7) 63.5 (17.5) 63.0 (17.2) 62.5 (16.9) 62.0 (16.6) 61.5 (16.3) 61.0 (16.1) 60.5 (15.8) 60.0 (15.5) 59.5 (15.2) 59.0 (15.0) (-20.0) (-14.4) (-8.8) (-3.3) (2.2) (7.7) (13.3) (18.8) (24.4) (30.0) (35.5) (41.1) (46.6) Outdoor Air Temperature (°F (°C)) 4.800 4.600...
  • Page 92: Heat Mode Outdoor Air Temperature Characteristic

    Unit setting: Standard piping length, forced heating at 30°C (86°F), Hi fan  Compressor frequency: Rated for Heating operation  Piping Length: 7.5 m (24.6 ft)  Voltage: 208V/230V 18.2.1 CS-XE9SKUA CU-XE9SKUA 110.0 (43.3) 105.0 (40.5) 100.0 (37.7) 95.0 (35.0) 90.0 (32.2) 85.0 (29.4) 80.0 (26.6) 75.0 (23.8)
  • Page 93 18.2.2 CS-XE12SKUA CU-XE12SKUA 120.0 (48.8) 115.0 (46.1) 110.0 (43.3) 105.0 (40.5) 100.0 (37.7) 95.0 (35.0) 90.0 (32.2) 85.0 (29.4) 80.0 (26.6) 75.0 (23.8) 70.0 (21.1) (-26.1) (-20.5) (-15) (-9.4) (-3.8) (1.6) (7.2) (12.7) (18.3) (23.8) Outdoor Air Temperature (°F (°C)) 6.000 5.500 5.000...
  • Page 94: Piping Length Correction Factor

    18.3 Piping Length Correction Factor The characteristic of the unit has to be corrected in accordance with the piping length. 18.3.1 CS-XE9SKUA CU-XE9SKUA CS-XE12SKUA CU-XE12SKUA 18.3.1.1 Cooling Capacity 1.03 1.01 0.99 0.97 0.95 (6.5) (9.8) (13.1) (16.4) (19.6) (22.9) (26.2) (29.5)
  • Page 95: Exploded View And Replacement Parts List

    19. Exploded View and Replacement Parts List 19.1 Indoor Unit CWH55025J XSN4+30FJ XTN4+14AFJ Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
  • Page 96 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-XE9SKUA CS-XE12SKUA REMARK CHASSIS COMPLETE CWD50C1832 ← FAN MOTOR ARW7715AC ← CROSS - FLOW FAN COMPLETE CWH02C1137 ← BEARING ASSY CWH64K1010 ← SCREW – CROSS - FLOW FAN CWH551146 ← EVAPORATOR ACXB30C00820...
  • Page 97 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-XE9SKUA CS-XE12SKUA REMARK SENSOR COMPLETE (ECO) CWA50C3005 ← AIR SWING MOTOR (ECO) CWA981298 ← ELECTRONIC CONTROLLER CWA746917 ← ELECTRONIC CONTROLLER CWA747279 ← BAG COMPLETE (TUBE CONNECTOR) CWH82C2030 ← PARTICULAR PLATE (F. GRILLE) CWD912226 ←...
  • Page 98: Outdoor Unit

    19.2 Outdoor Unit Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
  • Page 99 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-XE9SKUA CU-XE12SKUA REMARK CHASSIS COMPLETE ACXD52K00130A ← ANTI - VIBRATION BUSHING CWH50077 ← COMPRESSOR 5RS102XHB21 ← NUT - COMPRESSOR MOUNT CWH561096 ← SOUND PROOF MATERIAL CWG302850 ← FAN MOTOR BRACKET CWD541153 ← FAN MOTOR ARW8407AC ←...

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