Panasonic CS-S9MKQ Service Manual
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Panasonic CS-S9MKQ Service Manual

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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.
In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.
WARNING
PRECAUTION OF LOW TEMPERATURE
Indoor Unit
CS-S9MKQ
CS-S12MKQ
CS-S18MKQ
CS-S24MKQ
CS-S28MKQ
© Panasonic HA Air-Conditioning (M) Sdn. Bhd. 2010.
Unauthorized copying and distribution is a violation of law.
Order No: PHAAM1012009C3
Outdoor Unit
CU-S9MKQ
CU-S12MKQ
CU-S18MKQ
CU-S24MKQ
CU-S28MKQ

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Summary of Contents for Panasonic CS-S9MKQ

  • Page 1 PRECAUTION OF LOW TEMPERATURE In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit. © Panasonic HA Air-Conditioning (M) Sdn. Bhd. 2010. Unauthorized copying and distribution is a violation of law.

  • Page 2: Table Of Contents

    Outdoor Unit ..........14 (For S18, S24MK, S28MK only) ....80 5. Refrigeration Cycle Diagram ......17 13.6 Low Pressure Prevention Control (Gas Leakage Detection) ........80 CS-S9MKQ CU-S9MKQ 13.7 Compressor Tank Temperature Rise CS-S12MKQ CU-S12MKQ......17 Protection Control........80 CS-S18MKQ CU-S18MKQ 13.8 Low Frequency Protection Control 1 ..

  • 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 19. During installation, install the refrigerant piping properly before run the compressor. (Operation of compressor without fixing refrigeration piping and valves at opened condition will cause suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, injury etc.). 20.

  • Page 5: Specification

    2. Specification Indoor CS-S9MKQ CS-S12MKQ Model Outdoor CU-S9MKQ CU-S12MKQ Performance Test Condition Phase, Hz Single, 60 Single, 60 Power Supply Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. 0.84 2.65 3.20 0.84 2.65 3.20 0.92 3.23 4.00...
  • Page 6 Height(I/D / O/D) mm (inch) 290 (11-7/16) 510 (20-3/32) 290 (11-7/16) 540 (21-9/32) Dimension Width (I/D / O/D) mm (inch) 870 (34-9/32) 650 (25-19/32) 870 (34-9/32) 780 (30-23/32) Depth (I/D / O/D) mm (inch) 204 (8-1/16) 230 (9-1/16) 204 (8-1/16) 289 (11-13/32) Weight Net (I/D / O/D)
  • Page 7 Indoor CS-S18MKQ CS-S24MKQ Model Outdoor CU-S18MKQ CU-S24MKQ Performance Test Condition Phase, Hz Single, 60 Single, 60 Power Supply Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. 1.10 5.20 6.00 1.10 5.20 6.00 1.12 6.00 7.10 1.12 6.00 7.10 Capacity...
  • Page 8 Height(I/D / O/D) mm (inch) 290 (11-7/16) 695 (27-3/8) 290 (11-7/16) 695 (27-3/8) Dimension Width (I/D / O/D) mm (inch) 1070 (42-5/32) 875 (34-15/32) 1070 (42-5/32) 875 (34-15/32) Depth (I/D / O/D) mm (inch) 235 (9-9/32) 320 (12-5/8) 235 (9-9/32) 320 (12-5/8) Weight Net (I/D / O/D)
  • Page 9 Indoor CS-S28MKQ Model Outdoor CU-S28MKQ Performance Test Condition Phase, Hz Single, 60 Power Supply Min. Mid. Max. Min. Mid. Max. 1.15 7.80 8.40 1.15 7.80 8.40 Capacity BTU/h 3920 26600 28600 3920 26600 28600 kJ/h 4140 28080 30240 4140 28080 30240 Running Current 12.6...
  • Page 10 Control Device Capillary Tube Refrigeration Refrigerant Oil FV50S (800) Cycle Refrigerant Type g (oz) R410A, 1.65k (58.2) Height(I/D / O/D) mm (inch) 290 (11-7/16) 795 (31-5/16) Dimension Width (I/D / O/D) mm (inch) 1070 (42-5/32) 875 (34-15/32) Depth (I/D / O/D) mm (inch) 235 (9-9/32) 320 (12-5/8)

  • Page 11: Location Of Controls And Components

    3. Location of Controls and Components Indoor Unit Outdoor Unit Remote Control...

  • Page 12: Dimensions

    4. Dimensions Indoor Unit 4.1.1 CS-S9MKQ CS-S12MKQ <Top View> <Side View> <Side View> <Front View> Air intake direction Left ping Air outlet Right ping hole direction hole <Bottom View> <Remote Control> AUTO COOL SPEED SWING MILD OFF/ON AUTO COMFORT PATROL/...
  • Page 13 4.1.2 CS-S18MKQ CS-S24MKQ CS-S28MKQ <Top View> <Side View> <Side View> <Front View> Air intake direction Left ping Air outlet Right ping 1070 hole direction hole <Remote Control> <Bottom View> AUTO SPEED COOL SWING MILD OFF/ON AUTO COMFORT PATROL/ MODE M ILD D R Y COO LING POWERFUL/ AIR SWING...

  • Page 14: Outdoor Unit

    Outdoor Unit 4.2.1 CU-S9MKQ <Top View> (650) Space necessary for installation 10 cm 10 cm 100 cm 2-way valve at Liquid side Anchor Bolt Pitch (High Pressure) 261 x 474 3-way valve at Gas side (Low Pressure) <Side View> <Side View> <Front View>...
  • Page 15 4.2.3 CU-S18MKQ CU-S24MKQ...
  • Page 16 4.2.4 CU-S28MKQ...

  • Page 17: Refrigeration Cycle Diagram

    5. Refrigeration Cycle Diagram CS-S9MKQ CU-S9MKQ CS-S12MKQ CU-S12MKQ...

  • Page 18: Cs-S18Mkq Cu-S18Mkq Cs-S24Mkq Cu-S24Mkq Cs-S28Mkq Cu-S28Mkq

    CS-S18MKQ CU-S18MKQ CS-S24MKQ CU-S24MKQ CS-S28MKQ CU-S28MKQ...

  • Page 19: Block Diagram

    6. Block Diagram CS-S9MKQ CU-S9MKQ...

  • Page 20: Cs-S12Mkq Cu-S12Mkq

    CS-S12MKQ CU-S12MKQ...

  • Page 21: Cs-S18Mkq Cu-S18Mkq Cs-S24Mkq Cu-S24Mkq

    CS-S18MKQ CU-S18MKQ CS-S24MKQ CU-S24MKQ...

  • Page 22: Cs-S28Mkq Cu-S28Mkq

    CS-S28MKQ CU-S28MKQ...

  • Page 23: Wiring Connection Diagram

    7. Wiring Connection Diagram Indoor Unit 7.1.1 CS-S9MKQ CS-S12MKQ...
  • Page 24 7.1.2 CS-S18MKQ CS-S24MKQ...
  • Page 25 7.1.3 CS-S28MKQ...

  • Page 26: Outdoor Unit

    Outdoor Unit 7.2.1 CU-S9MKQ YELLOW (YLW) BLUE (BLU) RED (RED) TRADE MARK COMP. TERMINAL Resistance of Compressor Windings MODEL CU-S9MKQ CONNECTION 5RS092XCE21 1.152Ω 1.152Ω 1.152Ω...
  • Page 27 7.2.2 CU-S12MKQ TO INDOOR UNIT YELLOW (YLW) TERMINAL (BLACK) (WHITE) (RED) BOARD REACTOR BLUE (BLU) RED (RED) TRADE MARK COMP. TERMINAL RAT2 RAT1 DATA (RED) OUTDOOR AIR TEMP. SENSOR (THERMISTOR) SENSOR CN-TH COMPLETE (WHT) NOISE FILTER COMMUNICATION AC-BLK CIRCUIT CIRCUIT (BLK) PIPING TEMP.
  • Page 28 7.2.3 CU-S18MKQ CU-S24MKQ TO INDOOR UNIT YELLOW (YLW) TERMINAL (BLACK) (WHITE) (RED) BOARD REACTOR BLUE (BLU) RED (RED) TRADE MARK COMP. TERMINAL L2-1 L2-0 COM3 (RED) OUTDOOR AIR TEMP. SENSOR (THERMISTOR) SENSOR CN-TH1 COMPLETE (WHT) NOISE FILTER COMMUNICATION AC-BLK CIRCUIT CIRCUIT (BLK) PIPING TEMP.
  • Page 29 7.2.4 CU-S28MKQ REMARKS REACTOR BLU : BLUE BLK : BLACK WHT: WHITE RED: RED YLW : YELLOW GRY: GR AY GRN: GREEN TERMINAL ORG: ORANGE BOARD Y/G : YELLOW/GREEN L2-1 L2-0 CORE ACL1 CN-BLK AC-BLK FUSE3 CORE (250V, 25A) RY-PWR2 ACN1 AC-WHT RY-C...

  • Page 30: Electronic Circuit Diagram

    8. Electronic Circuit Diagram Indoor Unit 8.1.1 CS-S9MKQ CS-S12MKQ...
  • Page 31 8.1.2 CS-S18MKQ CS-S24MKQ...
  • Page 32 8.1.3 CS-S28MKQ...

  • Page 33: Outdoor Unit

    Outdoor Unit 8.2.1 CU-S9MKQ...
  • Page 34 8.2.2 CU-S12MKQ TO INDOOR UNIT REACTOR TERMINAL (BLACK) (WHITE) (RED) BOARD RAT2 RAT1 DATA (RED) OUTDOOR TEMP. SENSOR NOISE FILTER COMMUNICATION AC-BLK CIRCUIT CIRCUIT (BLK) PIPING TEMP. SENSOR1 FUSE101 (20A 250V) FUSE102 T3.15A L250V AC-WHT (WHT) (GRN) TANK TEMP. SENSOR RECTIFICATION SWITCHING POWER (GRN)
  • Page 35 8.2.3 CU-S18MKQ CU-S24MKQ TO INDOOR UNIT REACTOR TERMINAL (BLACK) (WHITE) (RED) BOARD L2-1 L2-0 R101 R100 COM3 OUTDOOR TEMP. (RED) SENSOR NOISE FILTER COMMUNICATION AC-BLK PIPING TEMP. CIRCUIT CIRCUIT (BLK) SENSOR1 FUSE3 (20A 250V) FUSE2 T3.15A L250V SWITCHING POWER AC-WHT SUPPLY (WHT) CIRCUIT...
  • Page 36 8.2.4 CU-S28MKQ REACTOR TERMINAL BOARD L2-1 L2-0 CORE ACL1 CN-BLK AC-BLK FUSE3 CORE (250V, 25A) RY-PWR2 ACN1 AC-WHT RY-C CORE COMPRESSOR TERMINAL CORE CN-WHT RY-PWR1 BOARD PTC1 FUSE1 T2.5A L250V PTC2 FUSE2 COM3 T3.15A L250V SSR1 CORE OUTDOOR TEMP. SENSOR R101 R100 (15k Ohm.

  • Page 37: Printed Circuit Board

    9. Printed Circuit Board Indoor Unit 9.1.1 Main Printed Circuit Board...
  • Page 38 9.1.2 Power Printed Circuit Board 9.1.2.1 CS-S9MK CS-S12MK 9.1.2.2 CS-S18MK CS-S24MK...
  • Page 39 9.1.3 Indicator Printed Circuit Board 9.1.4 Receiver Printed Circuit Board 9.1.5 High Voltage Power Supply Printed Circuit Board HV (-) HV (+)
  • Page 40 9.1.6 Comparator Printed Circuit Board 9.1.7 Human Activity Sensor Printed Circuit Board...

  • Page 41: Outdoor Unit

    Outdoor Unit 9.2.1 Main Printed Circuit Board 9.2.1.1 CU-S9MK...
  • Page 42 9.2.1.2 CU-S12MK...
  • Page 43 9.2.1.3 CU-S18MK CU-S24MK...
  • Page 44 9.2.1.4 CU-S28MK...
  • Page 45 9.2.2 Noise Filter Printed Circuit Board 9.2.2.1 CU-S9MKQ...

  • Page 46: Installation Instruction

    10.1.3 Indoor/Outdoor Unit Installation 10. Installation Instruction Diagram 10.1 Select The Best Location 10.1.1 Indoor Unit • Do not install the unit in excessive oil fume area such as kitchen, workshop and etc. • There should not be any heat source or steam near the unit.
  • Page 47 10.1.4 How to Fix Installation Plate The mounting wall shall be strong and solid enough to prevent if from the vibration. Dimension Model ○ ○ ○ ○ ○ ○ S9***, S12*** 485mm 82mm 165mm 158mm 93mm 145mm S18***, S24*** 585mm 82mm 165mm 158mm...
  • Page 48 10.1.6 Indoor Unit Installation 10.1.6.1 For the right rear piping 10.1.6.2 For the right and right bottom piping 10.1.6.3 For the embedded piping (This can be used for left rear piping and bottom piping also.)
  • Page 49 10.1.7 Connect the Cable to the Indoor Unit The inside and outside connection cable can be connected without removing the front grille. Connection cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 x 1.5 (1.0 ~ 1.5HP) or 4 x 2.5 mm (2.0 ~ 2.5HP) flexible cord, type designation 245 IEC 57 or heavier cord.
  • Page 50 • Secure the connection cable onto the control board with the holder. • Ensure the colour of wires of outdoor unit and the terminal Nos. are the same to the indoor’s respectively. • Earth wire shall be Yellow/Green (Y/G) in colour and longer than the other AC wires for safety reason. 10.1.8 Wire Stripping And Connecting Requirement 10.1.8.1...

  • Page 51: Outdoor Unit

    10.2 Outdoor Unit 10.2.1 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 by bolt nut (ø10mm). When installing at roof, please consider strong wind and earthquake. Please fasten the installation stand firmly with bolt or nails.
  • Page 52 10.2.3 Evacuation of the Equipment Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way valve. Be sure to connect the end of the charging hose with the push pin to the service port. Connect the center hose of the charging set to a vacuum pump.
  • Page 53 10.2.4 Connect the cable to the Outdoor Unit Remove the control board cover from the unit by loosening the screw. Connection cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 x 1.5mm (1.0~1. 5HP) or 4 x 2.5mm (2.0~2.5HP) flexible cord, type designation 245 IEC 57 or heavier cord.

  • Page 54: Installation Instruction

    11. Installation Instruction 11.1.3 Indoor/Outdoor Unit Installation Diagram 11.1 Select The Best Location (For S28MKQ only) 11.1.1 Indoor Unit • Do not install the unit in excessive oil fume area such as kitchen, workshop and etc. • There should not be any heat source or steam near the unit.
  • Page 55 11.1.4 How to Fix Installation Plate The mounting wall shall be strong and solid enough to prevent if from the vibration. Dimension Model ○ ○ ○ ○ ○ ○ S28*** 585mm 82mm 165mm 158mm 219mm 269mm ○ The centre of installation plate should be at more than 1 at right and left of the wall.
  • Page 56 11.1.6 Indoor Unit Installation 11.1.6.1 For the right rear piping 11.1.6.2 For the right and right bottom piping 11.1.6.3 For the embedded piping (This can be used for left rear piping and bottom piping also.)
  • Page 57 11.1.7 Connect the Cable to the Indoor Unit The inside and outside connection cable can be connected without removing the front grille. Connection cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 x 1.5 flexible cord, type designation 245 IEC 57 or heavier cord. Bind all the indoor and outdoor connection cable with tape and route the connection cable via the escapement.
  • Page 58 Secure the connection cable onto the control board with the holder (clamper). • Ensure the colour of wires of outdoor unit and the terminal Nos. are the same to the indoor’s respectively. • Earth wire shall be Yellow/Green (Y/G) in colour and longer than the other AC wires for safety reason. 11.1.8 Wire Stripping And Connecting Requirement 11.1.8.1...

  • Page 59: Outdoor Unit

    11.2 Outdoor Unit 11.2.1 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 by bolt nut (ø10mm). When installing at roof, please consider strong wind and earthquake. Please fasten the installation stand firmly with bolt or nails.
  • Page 60 11.2.3 Evacuation of the Equipment Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way valve. Be sure to connect the end of the charging hose with the push pin to the service port. Connect the center hose of the charging set to a vacuum pump.
  • Page 61 11.2.4 Connect the cable to the Outdoor Unit Remove the control board cover from the unit by loosening the screw. Cable connection to the power supply through Isolating Devices (Disconnecting means). Connect the approved polychloroprene sheathed power supply cord 3 x 4.0 mm (3.0HP) type designation 245 IEC 57 or heavier cord to the terminal board, and connect the others end of the cord to Isolating Devices (Disconnecting means).

  • Page 62: Operation Control

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

  • Page 63: Indoor Fan Motor Operation

    12.2 Indoor Fan Motor Operation 12.2.1 Basic Rotation Speed • Manual Fan Speed Fan motor’s number of rotation is determined according to remote control setting. Remote control ○ ○ ○ ○ ○ • Auto Fan Speed According to room temperature and setting temperature, indoor fan speed is determined automatically. The indoor fan will operate according to pattern below.

  • Page 64: Airflow Direction

    12.5 Airflow Direction • There are two types of airflow, vertical airflow (directed by horizontal vane) and horizontal airflow (directed by vertical vanes). • Control of airflow direction can be automatic (angles of direction is determined by operation mode, heat exchanger temperature and intake air temperature) and manual (angles of direction can be adjusted using remote control).

  • Page 65: Quiet Operation (Cooling Mode/Cooling Area Of Dry Mode)

    12.6 Quiet Operation (Cooling Mode/Cooling Area of Dry Mode) • Purpose To provide quiet cooling operation compare to normal operation. • Control condition Quiet operation start condition When Quiet button at remote control is pressed Quiet INDICATOR illuminates. Quiet operation stop condition When one of the following conditions is satisfied, quiet operation stops: •...

  • Page 66: Timer Control

    12.8 Timer Control • There are 2 sets of ON and OFF timer is available to turn the unit ON or OFF at different preset time. • If more than one timer had been set, the upcoming timer will be display and will activated in sequence. 12.8.1 ON Timer Control ON Timer 1 and ON Timer 2 can be set using remote control, where the unit with timer set will start operation earlier...

  • Page 67: Patrol Operation

    12.11 Patrol Operation • To monitor air dirtiness level by using Patrol sensor and to maintain air freshness by activates e-ion operation • Patrol operation starts condition When the unit operation is started with “OFF/ON” button When the unit stops, “Patrol” operation is selected, Patrol individual operation will start. During cooling only operation, “Patrol”...
  • Page 68 • Patrol Sensor Control First 2 minutes from Patrol function activates is stabilization time, during stabilization time, no air dirtiness level is monitored. The Air Dirtiness level is set to Clean, Patrol LED turns blue color. After that, Patrol sensor starts to record the resistance value at fixed interval. Higher resistance value indicates cleaner air.
  • Page 69 • Airflow direction (Horizontal, Vertical) Control During any operation mode combines with Patrol operation, airflow direction follows respective operation mode. During Patrol individual operation if e-ion starts, only Auto Air Swing is allowed. Even if “Air Swing” button is pressed, no signal is sent to air conditioner, and no change on LCD display. During Patrol individual operation if e-ion stops, Airflow direction louver closed.
  • Page 70 • Patrol Operation Demo Mode Patrol Operation Demo Mode start condition Press “Set” button continuously for 15 seconds by using pointer during Air Conditioner is OFF condition to enter internal setting mode. Press “Timer Decrement" button to select “Pt demo”. Press “Timer Set”...

  • Page 71: E-Ion Operation

    12.12 E-ion Operation • This operation provides clean air by producing negative ions to attract dust captured at the positively charged active e-ion filters. • e-ion operation start condition During unit running at any operation mode, if “e-ion” operation is selected, combination operation (operation mode + e-ion operation) starts.
  • Page 72 • e-ion Check Mode e-ion abnormality check mode Purpose is to improve sensor serviceability when sensor is malfunction. (1) Control starting condition When all of the conditions are formed Not in Patrol Demo mode. e-ion operation ON. When e-ion check mode signal is received; the procedure of selection is as shown: •...

  • Page 73: Mild Dry Cooling Operation

    • Error Detection Control When e-ion indicator blink, it indicates error listed below: Active e-ion Air Purifying system PCB main connector open: Judgment Method • During e-ion operation (include during Patrol operation), Active e-ion Air Purifying system main connector to PCB is opened. Troubleshooting Methods •...

  • Page 74: Auto Comfort And Eco Navi Operation

    12.14 AUTO COMFORT and ECO NAVI Operation • Area of human availability, activity level and absent is judged based on pulses by using 2 infrared sensors. 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 75 12.14.1 Signal Detection 120º • Human Activity sensor will turns on according to infrared sensors signal detection. Signal detection Human Activity Indicator Possible detected human position area Sensor 1 Sensor 2 Left Center Right ■ ■ □ □ ■ ■ ■...
  • Page 76 12.14.7 Setting Position Judgment • According to installation position when there is only one activity area detected, the horizontal airflow direction louver position is fixed according to chart below: Horizontal airflow direction louver position Target area Left installation Center installation Right installation •...
  • Page 77 12.14.9 ECO NAVI and AUTO COMF Demo Mode • To enable ECO DEMO mode: Remote control normal mode Press continously for 15s Transmit Patrol default OFF/ON code (Buzzer: OFF:peep, ON:peep) Transmit Patrol demo code (Buzzer: OFF:peep, ON:peep) Transmit ECO demo code (Buzzer: OFF:peep, ON:peep) Transmit check code (Buzzer:peep)
  • Page 78 12.14.10 Infrared 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 infrared sensor judge Lo level continuously for 25 seconds •...

  • Page 79: Protection Control

    13. Protection Control 13.1 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 80: Compressor Overheating Prevention Control (For S18, S24Mk, S28Mk Only)

    13.4.2 S18MK, S24MK, S28MK • Overheating Prevention Control When the IPM temperature rises to 100°C, compressor operation will stop immediately. Compressor operation restarts after 3 minutes the temperature decreases to 95°C. • DC Peak Current Control When electric current to IPM exceeds set value of 18.5A, the compressor will stop operate. During operation starts, if the DC peak current is detected after 30 seconds, the operation will restart after 2 minutes.

  • Page 81: Low Frequency Protection Control 2

    13.9 Low Frequency Protection Control 2 • When all below conditions comply, the compressor frequency will changed to lower frequency. Temperature, T, for: Cooling / Soft Dry Indoor intake air (°C) T < 15 or T ≥ 30 Outdoor air (°C) T <...

  • Page 82: Odor Cut Control

    13.15 Odor Cut Control • To reduce the odor released from the unit. Start Condition AUTO FAN Speed is selected during COOL or DRY operation. During freeze prevention control and timer preliminary operation, this control is not applicable. Control content Depends on compressor conditions: 1.

  • Page 83: Servicing Mode

    14. Servicing Mode 14.1 Auto Off/On Button Auto OFF/ON Auto OFF/ON Button Pressed Button Pressed 5 sec Auto Operation Test Run Operation Stop (Forced Cooling Operation) Beep AUTO OPERATION MODE The Auto Operation will be activated immediately once the Auto OFF/ON button is pressed. This operation can be used to operate air conditioner with limited function if remote control is misplaced or malfunction.

  • Page 84: Remote Control Button

    14.2 Remote Control Button 14.2.1 SET Button • To check remote control transmission code and store the transmission code to EEPROM Press “Set” button continuously for 10 seconds by using pointer Press “Timer Set” button unit a “beep” sound is heard as confirmation of transmission code change. •...

  • Page 85: Troubleshooting Guide

    15. Troubleshooting Guide 15.1 Refrigeration Cycle System In order to diagnose malfunctions, ensure the air conditioner is free Normal Pressure and Outlet Air Temperature (Standard) from electrical problems before inspecting the refrigeration cycle. Gas Pressure Outlet air Temperature Such problems include insufficient insulation, problem with the (kg/cm (°C) power source, malfunction of a compressor and a fan.
  • Page 86 15.1.1 Relationship between the condition of the air conditioner and pressure and electric current Cooling Mode Condition of the air conditioner Low Pressure High Pressure Electric current during operation Insufficient refrigerant (gas leakage) Clogged capillary tube or strainer Short circuit in the indoor unit Heat radiation deficiency of the outdoor unit Inefficient compression...

  • Page 87: Breakdown Self Diagnosis Function

    15.2 Breakdown Self Diagnosis Function 15.2.1 Self Diagnosis Function (Three Digits Alphanumeric Code) • Once error occurred during operation, the unit will stop its operation, and Timer LED blinks. • Although Timer LED goes off when power supply is turned off, if the unit is operated under a breakdown condition, the LED will ON again.

  • Page 88: Error Code Table

    15.3 Error Code Table Diagnosis Emergency Abnormality / Protection control Abnormality Judgment Primary location to verify display Operation No abnormality detected Normal operation • Internal / external cable connection Indoor / Outdoor abnormal > 1 min after starting Indoor fan operation communication operation only...

  • Page 89: Troubleshooting Flowchart

    15.4 Troubleshooting Flowchart 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 90 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 91 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 92 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 93 15.4.5 H16 (Outdoor Current Transformer Open Circuit) Malfunction Decision Conditions • A current transformer (CT) is detected by checking the compressor running frequency (≥ rated frequency) and CT detected input current (less than 1.14A) for continuously 20 seconds. Malfunction Caused •...
  • Page 94 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 95 15.4.7 H23 (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 96 15.4.8 H25 (e-ion Air Purifying System Abnormal) Malfunction Decision Conditions • During standby of cooling and heating operation, e-ion breakdown occurs and air conditioner stops operation. Malfunction Caused • Faulty indoor main PCB. • Faulty indoor e-ion power module. Troubleshooting...
  • Page 97 15.4.9 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 98 15.4.10 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 99 15.4.11 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 100 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 101 15.4.13 H58 (Patrol Sensor Abnormality) Malfunction Decision Conditions • If Patrol sensor feedback is 0V or 5V continuous for 6 hours. • Error will display only when the Patrol operation is ON. Malfunction Caused • Faulty connector connection. • Faulty Patrol sensor. Troubleshooting...
  • Page 102 15.4.14 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 103 15.4.15 H98 (Indoor High Pressure Protection) Error Code will not display (no Timer LED blinking) but store in EEPROM Malfunction Decision Conditions • During heating operation, the temperature detected by the indoor pipe temperature sensor is above 60°C. Malfunction Caused •...
  • Page 104 15.4.16 H99 (Indoor Freeze Prevention Protection: Cooling or Soft Dry) Malfunction Decision Conditions • Freeze prevention control takes place (when indoor pipe temperature is lower than 2°C) Malfunction Caused • Clogged air filter of the indoor unit • Dust accumulation on the indoor unit heat exchanger •...
  • Page 105 15.4.17 F11 (Indoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions • When cooling operation, when indoor pipe temperature or indoor heat exchanger temperature sensor is above 45°C. Malfunction Caused • Faulty connector connection. • Faulty indoor pipe temperature sensor. • Faulty indoor main PCB.
  • Page 106 15.4.18 F90 (Power Factor Correction Protection) Malfunction Decision Conditions • During startup and operation of cooling and heating, when Power Factor Correction (PFC) protection circuitry at the outdoor unit main PCB senses abnormal high DC voltage level. Malfunction Caused • DC voltage peak due to power supply surge.
  • Page 107 15.4.19 F91 (Refrigeration Cycle Abnormality) Malfunction Decision Conditions • During cooling, compressor frequency = Fcmax. • During cooling and heating operation, running current: 0.65A < I < 1.65A. • During cooling, indoor intake - indoor pipe < 4°C. Malfunction Caused •...
  • Page 108 15.4.20 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 • Outdoor PCB malfunction Troubleshooting...
  • Page 109 15.4.21 F95 (Cooling High Pressure Abnormality) Malfunction Decision Conditions During operation of cooling, when outdoor unit heat exchanger high temperature data (61°C) is detected by the outdoor pipe temperature sensor. Malfunction Caused • Outdoor pipe temperature rise due to short circuit of hot discharge air flow. •...
  • Page 110 15.4.22 F96 (IPM Overheating) Malfunction Decision Conditions During operating of cooling and heating, when IPM temperature data (100°C) is detected by the IPM temperature sensor. Malfunction Caused • IPM overheats due to short circuit of hot discharge air flow. • IPM overheats due to defective of outdoor fan motor.
  • Page 111 15.4.23 F97 (Compressor Overheating) Malfunction Decision Conditions During operation of cooling and heating, when compressor tank temperature data (112°C) is detected by the compressor tank temperature sensor. Malfunction Caused • Refrigerant shortage (refrigerant leakage). • 2/3 way valve closed. • Detection error due to faulty compressor tank temperature sensor.
  • Page 112 15.4.24 F98 (Input Over Current Detection) Malfunction Decision Conditions During cooling and heating operation, when an input over-current (16.8A) is detected by checking the input current value being detected by current transformer (CT) with the compressor running. Malfunction Caused • Over-current due to compressor failure.

  • Page 113: Troubleshooting

    15.4.25 F99 (Output Over Current Detection) Malfunction Decision Conditions During operation of cooling and heating, when an output over-current (18.5A) is detected by checking the current that flows in the inverter DC peak sensing circuitry. Malfunction Caused • DC peak due to compressor failure. •...

  • Page 114: 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 CS-S9MK CS-S12MK 16.1.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal...
  • Page 115 Figure 3 Figure 4 Figure 5 16.1.1.3 To remove discharge grille Figure 6...
  • Page 116 16.1.1.4 To remove control board Figure 7 16.1.1.5 To remove cross flow fan and indoor fan motor Figure 8 Figure 9...
  • Page 117 Figure 10 Figure 11...

  • Page 118: Cs-S18Mk Cs-S24Mk Cs-S28Mk

    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. 16.2 CS-S18MK CS-S24MK CS-S28MK 16.2.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures 16.2.1.1...
  • Page 119 16.2.1.3 To remove power electronic controller Figure 14 Figure 15 Figure 16 Figure 17...
  • Page 120 16.2.1.4 To remove discharge grille Figure 18 16.2.1.5 To remove control board Figure 19 16.2.1.6 To remove cross flow fan and indoor fan motor Figure 20...
  • Page 121 Figure 21 Figure 22 Figure 23...

  • Page 122: Technical Data

    17. Technical Data 17.1 Operation Characteristics 17.1.1 CS-S9MKQ CU-S9MKQ • Cooling Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Piping length: 7.5m Compressor Frequency = Fc...
  • Page 123 • Piping Length Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Outdoor temperature: 35°C (DBT), 24°C (WBT) Compressor Frequency = Fc...
  • Page 124 17.1.2 CS-S12MKQ CU-S12MKQ • Cooling Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Piping length: 7.5m Compressor Frequency = Fc...
  • Page 125 • Piping Length Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Outdoor temperature: 35°C (DBT), 24°C (WBT) Compressor Frequency = Fc...
  • Page 126 17.1.3 CS-S18MKQ CU-S18MKQ • Cooling Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Piping length: Compressor Frequency = Fc...
  • Page 127 • Piping Length Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Outdoor temperature: 35°C (DBT), 24°C (WBT) Compressor Frequency = Fc...
  • Page 128 17.1.4 CS-S24MKQ CU-S24MKQ • Cooling Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Piping length: Compressor Frequency = Fc...
  • Page 129 • Piping Length Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Outdoor temperature: 35°C (DBT), 24°C (WBT) Compressor Frequency = Fc...
  • Page 130 17.1.5 CS-S28MKQ CU-S28MKQ • Cooling Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Piping length: Compressor Frequency = Fc...
  • Page 131 • Piping Length Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Outdoor temperature: 35°C (DBT), 24°C (WBT) Compressor Frequency = Fc...

  • Page 132: Exploded View And Replacement Parts List132

    18. Exploded View and Replacement Parts List 18.1 Indoor Unit 18.1.1 CS-S9MKQ CS-S12MKQ 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 133 REF. NO. PART NAME & DESCRIPTION CS-S9MKQ CS-S12MKQ REMARK CHASSY COMPLETE CWD50C1653 ← FAN MOTOR CWA921443 ← CROSS-FLOW FAN COMPLETE CWH02C1076 ← BEARING ASSY CWH64K007 ← SCREW - CROSS-FLOW FAN CWH551146 ← GENERATOR COMPLETE CWH94C0028 ← EVAPORATOR CWB30C3357 CWB30C3362 FLARE NUT (LIQUID) CWT251030 ←...
  • Page 134 ELECTRONIC CONTROLLER (ECO SENSOR) CWA746206 ← SENSOR COMPLETE (ECO) CWA50C2758 ← LEAD WIRE - PCB ECO CWA67C9160 ← CONTROL BOARD CASING FOR PCB ECO CWD93C1108 ← COVER FOR RECEIVER (BOTTOM) CWD933209 ← COVER FOR RECEIVER (UPPER) CWD933022 ← REMOTE CONTROL CO. (WIRED) OPTIONAL CWG50C2930 ←...
  • Page 135 18.1.2 CS-S18MKQ CS-S24MKQ CS-S28MKQ 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 136 REF NO. PART NAME & DESCRIPTION QTY. CS-S18MKQ CS-S24MKQ CS-S28MKQ REMARK CHASSY COMPLETE CWD50C1623 ← ← FAN MOTOR ARW7628AC ARW7627AC ← CROSS FLOW FAN COMPLETE CWH02C1077 ← ← BEARING ASS’Y CWH64K007 ← ← SCREW - CROSS FLOW FAN CWH551146 ← ←...
  • Page 137 COVER FOR RECEIVER (BOTTOM) CWD933209 ← ← COVER FOR RECEIVER (UPPER) CWD933022 ← ← REMOTE CONTROL CO. (WIRED) OPTIONAL CWG50C2930 ← ← POWER SUPPLY CORD - COMPLETE CWA20C2851 CWA20C2853 (Note) • All parts are supplied from PHAAM, Malaysia (Vendor Code: 00029488). •...

  • Page 138: Outdoor Unit

    18.2 Outdoor Unit 18.2.1 CU-S9MKQ 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 139 18.2.2 CU-S12MKQ 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 140 REF. NO. DESCRIPTION & NAME CU-S9MKQ CU-S12MKQ REMARK CHASSY ASSY CWD50K2107 CWD50K2071 FAN MOTOR BRACKET CWD541074 CWD541030 SCREW - FAN MOTOR BRACKET CWH551217 ← FAN MOTOR CWA951604 CWA951466 SCREW - FAN MOTOR MOUNT CWH55252J CWH55406J PROPELLER FAN ASSY CWH03K1020 CWH03K1010 NUT - PROPELLER FAN CWH56053J ←...
  • Page 141 18.2.3 CU-S18MKQ CU-S24MKQ 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 142 REF. NO. DESCRIPTION & NAME QTY. CU-S18MKQ CU-S24MKQ REMARK CHASSY ASS’Y CWD52K1249 ← ANTI-VIBRATION BUSHING CWH50077 ← COMPRESSOR 5RD132XBA21 ← NUT - COMPRESSOR MOUNT CWH56000J ← SOUND PROOF MATERIAL CWG302292 ← FAN MOTOR BRACKET CWD541154 ← FAN MOTOR CWA951762 ← SCREW - FAN MOTOR BRACKET CWH551217 ←...
  • Page 143 18.2.4 CU-S28MKQ 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 144 REF. NO. DESCRIPTION & NAME QTY. CU-S28MKQ REMARK BASE PAN ASS'Y CWD52K1230 ANTI-VIBRATION BUSHING CWH50055 PACKING CWB81043 COMPRESSOR 5KD240XAF21 NUT - COMPRESSOR MOUNT CWH561049 FAN MOTOR BRACKET CWD541126 FAN MOTOR CWA951712 SCREW - FAN MOTOR BRACKET CWH551217 SCREW - FAN MOTOR MOUNT CWH551040J PROPELLER FAN ASS’Y CWH001019...

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