York DHP30NWB21SDCP30NWB21SDHP36NWB21SDCP36NWB21S Service Manual
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York DHP30NWB21SDCP30NWB21SDHP36NWB21SDCP36NWB21S Service Manual

"p" series 30k - 36k 220v inverter-driven air conditioning units
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Service
Manual
"P" SERIES
30K - 36K 220V
INVERTER-DRIVEN AIR
CONDITIONING UNITS
Type
INDOOR UNIT
Type
OUTDOOR UNIT
IMPORTANT:
READ AND UNDERSTAND
THIS MANUAL BEFORE
USING THIS INVERTER-
DRIVEN AIR CONDITIONING
UNIT. KEEP THIS MANUAL
FOR FUTURE REFERENCE.
Model
DHP30NWB21S
DCP30NWB21S
DHP36NWB21S
DCP36NWB21S
Model
DHP30CSB21S
DCP30CSB21S
DHP36CSB21S
DCP36CSB21S

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Summary of Contents for York DHP30NWB21SDCP30NWB21SDHP36NWB21SDCP36NWB21S

  • Page 1 Service Manual "P" SERIES 30K - 36K 220V INVERTER-DRIVEN AIR CONDITIONING UNITS Type Model DHP30NWB21S DCP30NWB21S INDOOR UNIT DHP36NWB21S DCP36NWB21S Type Model DHP30CSB21S DCP30CSB21S OUTDOOR UNIT DHP36CSB21S DCP36CSB21S IMPORTANT: READ AND UNDERSTAND THIS MANUAL BEFORE USING THIS INVERTER- DRIVEN AIR CONDITIONING UNIT.

  • Page 2: Important Notice

    Important Notice ● Johnson Controls, Inc. pursues a policy of continuing improvement in design and performance in its products. As such, Johnson Controls, Inc. reserves the right to make changes at any time without prior notice. ● Johnson Controls, Inc. cannot anticipate every possible circumstance that might involve a potential hazard. ●...

  • Page 3: Table Of Contents

    Service Manual Table of Contents Safety Summary ......................i 1. Models ..........................1 2. Specifications ......................2 2.1 Specification Sheet ......................2 2.2 Operation Characteristic Curve ..................8 2.3 Capacity Variation Ratio According to Temperature ............8 2.4 Noise Curve ........................9 2.5 Cooling and Heating Data Sheet in Rated Frequency .............9 3.

  • Page 4: Important Safety Instructions

    1. Introduction This manual concentrates on inverter-driven cooling or heat pump air conditioning units. Read this manual carefully before installation. This manual should be considered as a permanent part of the air conditioning equipment and should remain with the air conditioning equipment. 2.
  • Page 5 Take the following precautions to reduce the risk of property damage. ● Be careful that moisture, dust, or variant refrigerant compounds not enter the refrigerant cycle during installation work. Foreign matter could damage internal components or cause blockages. ● If air filters are required on this unit, do not operate the unit without the air filter set in place. If the air filter is not installed, dust may accumulate and breakdown may result.
  • Page 6 ● Do not position the condensate pipe for the indoor unit near any sanitary sewers where corrosive gases may be present. If you do, toxic gases can seep into breathable air spaces and can cause respiratory injuries. If the condensate pipe is installed incorrectly, water leakage and damage to the ceiling, floor, furniture, or other possessions may result.
  • Page 7 under pressure and never open pressurized system parts. ● Before installation is complete, make sure that the refrigerant leak test has been performed. If refrigerant gases escape into the air, turn OFF the main switch, extinguish any open flames and contact your service contractor.
  • Page 8 ● Communication cabling shall be a minimum of 18-Gauge, 2-Conductor, Stranded Copper. Shielded cable must be considered for applications and routing in areas of high EMI and other sources of potentially excessive electrical noise to reduce the potential for communication errors. When shielded cabling is applied, proper bonding and termination of the cable shield is required as per Johnson Controls guidelines.

  • Page 9: Models

    Service Manual 1. Models Summary Indoor Unit: DHP30NWB21S DCP30NWB21S DHP36NWB21S DCP36NWB21S Outdoor Unit: DHP30CSB21S DCP30CSB21S DHP36CSB21S DCP36CSB21S Remote Controller: DRCPX Technical Information...

  • Page 10: Specifications

    Service Manual 2. Specifications 2.1 Specification Sheet DCP30NWB21S DHP30NWB21S Model DCP30CSB21S DHP30CSB21S Rated Voltage 208/230 208/230 Power Supply Rated Frequency Phases Power Supply Mode Outdoor Outdoor Cooling Capacity(Min~Max) Btu/h 28000(9485~30026) 28000(9485~30026) Heating Capacity(Min~Max) Btu/h 28400(9997~32994) Cooling Power Input(Min~Max) 2700(350~3900) 2700(350~3900) Heating Power Input(Min~Max) 2800(450~4000) Cooling Power Current...
  • Page 11 Service Manual Model of Outdoor Unit DCP30CSB21S DHP30CSB21S ZHUHAI LANDA COMPERSSOR ZHUHAI LANDA COMPERSSOR Compressor Manufacturer/Trademark CO.LTD. CO.LTD. Compressor Model QXAS-D23zX090 QXAS-D23zX090 Compressor Oil RB68EP RB68EP Compressor Type Rotary Rotary Compressor Locked Rotor Amp (L.R.A) Compressor RLA 13.45 13.45 Compressor Power Input 2450 2450 Overload Protector...
  • Page 12 Service Manual DCP36NWB21S DHP36NWB21S Model DCP36CSB21S DHP36CSB21S Rated Voltage 208/230 208/230 Power Supply Rated Frequency Phases Power Supply Mode Outdoor Outdoor Cooling Capacity(Min~Max) Btu/h 33600(7404~35997) 33600(7404~35997) Heating Capacity(Min~Max) Btu/h 34600(14979~35997) Cooling Power Input(Min~Max) 4100 4100(450~4300) Heating Power Input(Min~Max) 3800(460~4300) Cooling Power Current Heating Power Current 16.5 Rated Input...
  • Page 13 Service Manual DCP36CSB21S Model of Outdoor Unit DHP36CSB21S MITSUBISHI ELECTRIC MITSUBISHI ELECTRIC Compressor Manufacturer/Trademark (GUANGZHOU)COMPRESSOR (GUANGZHOU)COMPRESSOR CO. LTD CO. LTD Compressor Model TNB306FPGMC TNB306FPGMC Compressor Oil FV50S FV50S Compressor Type Rotary Rotary Compressor Locked Rotor Amp (L.R.A) 67.00 67.00 Compressor RLA 13.50 13.50 Compressor Power Input...

  • Page 14: Operation Characteristic Curve

    Service Manual 2.2 Operation Characteristic Curve Cooling Heating Condition Condition Indoor:DB 70°F Indoor:DB 80°F WB66°F Indoor air flow: Super High Indoor air flow: Super High Pipe length:24 39/64ft Pipe length:24 39/64ft Compressor Frequency(Hz) Compressor Frequency(Hz) 2.3 Capacity Variation Ratio According to Temperature Cooling Heating Conditions...

  • Page 15: Noise Curve

    Service Manual 2.4 Noise Curve Indoor side noise Outdoor side noise Compressor frequency(Hz) Indoor fan motor rating speed 2.5 Cooling and Heating Data Sheet in Rated Frequency Cooling: Pressure of gas pipe Inlet and outlet pipe Rated cooling Compressor connecting indoor and temperature of heat Fan speed of Fan speed of...

  • Page 16: Outline Dimension Diagram

    Service Manual 3. Outline Dimension Diagram 3.1 Indoor Unit 53 9/64 13 25/32 29 3/8 Φ2 3/4 Φ2 3/4 11 19/32 3 1/2 Unit:inch 3.2 Outdoor Unit 36 2/9 14 37/64 39 1/2 16 13/16 Unit:inch Technical Information...

  • Page 17: Refrigerant System Diagram

    Service Manual 4. Refrigerant System Diagram 30K: Cooling only model Outdoor unit Indoor unit Gas pipe side Valve Di s charge Heat exchanger (evaporator) Suction Accumlator Compressor Heat exchanger Liquid pipe (condenser) side Valve Electron Capillary Strainer expansion valve COOLING Cooling and heating model Outdoor unit Indoor unit...
  • Page 18 Service Manual 36K: Cooling only model Indoor unit Outdoor unit Gas pipe side Valve Di s charge Heat exchanger (evaporator) Suction Accumlator Compressor Heat exchanger Liquid pipe (condenser) side Valve Electron Strainer expansion valve COOLING Cooling and heating model Indoor unit Outdoor unit Gas pipe side...

  • Page 19: Electrical Part

    Service Manual 5. Electrical Parts 5.1 Wiring Diagram ● Instruction Symbol Symbol Color Symbol Symbol Color Symbol Name White Green Jumper cap Yellow Brown COMP Compressor Blue Grounding wire YEGN Yellow/Green Black Violet Orange Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model. ●...
  • Page 20 Service Manual ● Outdoor Unit DCP30CSB21S DCP36CSB21S DHP30CSB21S DHP36CSB21S The above data is subject to change without notice. Please refer to the nameplate of the unit. Technical Information...

  • Page 21: Pcb Printed Diagram

    Service Manual 5.2 PCB Printed Diagram Indoor Unit ● Top view Name 2 2 2 Power supply live wire Fuse Interface of neutral wire for health function Power supply neutral wire Interface of communication Power switch High-frequency transformer Interface of fan motor Buzzer Interface of display Interface of display...
  • Page 22 Service Manual Outdoor Unit ● Top view Name Name Name 1 High-frequency transformer T1 6 High pressure protection terminal HPP1 11 Terminal of neutral wire Overload protection terminal of 7 Terminal of 4-way valve 12 Protective tube FU101 compressor OVC-COMP 3 Terminal of temp sensor CN2 8 Electric heater band of chassis HEAT2-L 13 Terminal of ground wire...

  • Page 23: Function And Control

    Service Manual 6. Function and Control 6.1 Remote Controller Introduction Buttons on Remote Controller ON/OFF button MODE button FAN button SWING button TURBO button ▲/ button SLEEP button TEMP button I FEEL button LIGHT button CLOCK button TIMER ON / TIMER OFF button Description of icons on display screen Set fan speed...
  • Page 24 Service Manual 1. ON/OFF button Pressing this button can turn on or turn off the air conditioner. After turning on the air conditioner, operation indicator " "on indoor unit’s display is ON showing a green indicator and indoor unit will give out a sound. (The color is different for different models.) 2.
  • Page 25 Service Manual 1. ON/OFF button Pressing this button can turn on or turn off the air conditioner. After turning on the air conditioner, operation indicator " " on indoor unit’s display is ON showing a green indicator and indoor unit will give out a sound. (The color is different for different models.) 2.
  • Page 26 Service Manual 7. SLEEP button Under COOL, HEAT or DRY mode, press this button to start up sleep function. " " icon is displayed on remote controller. Press this button again to cancel sleep function and " " icon will disappear. 8.

  • Page 27: Function Introduction For Combination Buttons

    Service Manual Function introduction for combination buttons 1. Energy-saving function Under cooling mode, press "TEMP" and " CLOCK" buttons simultaneously to start up or turn off energy-saving function. When energy- saving function is started up, "SE" will be shown on remote controller, and air conditioner will adjust the set temperature automatically according to factory setting to reach the best energy-saving effect.

  • Page 28: Brief Description Of Modes And Functions

    Service Manual 6.2 Brief Description of Modes and Functions 1. Temperature Parameters Indoor preset temperature(Tpreset) Indoor ambient temperature (Tamb.) 2. Basic Functions After the initial start up of the compressor,there will be a 3 minute delay before the compressor can start back running. If the compressor is in operation before de-energization, the compressor will be started with a 3-minute delay.
  • Page 29 Service Manual When duration of successive heating operation is more than 45 minutes, or accumulated heating time more than 90 minutes, and one of the following conditions is reached, the unit will enter the defrost mode after 3 minutes. a. Toutdoor amb. ≥ 41°F, Toutdoor pipe ≤ 28.4°F; b.
  • Page 30 Service Manual c. If Ttube ≥ 136°F, the compressor will run at reduced frequency. d. If Ttube ≥ 144°F, the compressor will stop and the indoor fan will run at preset speed. 2) Heating overload a. If Ttube ≤ 126°F, the unit will return to its original operation state. b.

  • Page 31: Wired Zone Controller

    Service Manual 7. Wired Zone Controller If the product is equipped with a wired zone controller, please refer to the following descriptions of wired zone controller. 1.Displaying Part Fig1.1.1 Outline of wired zone controller 1.1 LCD Display of Wired Zone Controller Fig.1.1.2 LCD display 1.2 Description of LCD Display Description...
  • Page 32 Service Manual Lock function Shield functions (Button operation, temperature setting, On/Off operation,Mode setting are SHIELD disabled by the remote monitoring system.) TURBO Turbo function state Memory function (The indoor unit resumes the original setting state after power failure and MEMORY then power recovery) It blinks under on state of the unit without operation of any button SAVE...
  • Page 33 Service Manual 3 Operation Instructions 3.1 On/Off Press On/Off to turn on the unit and turn it off by pressing again. Note: The state shown in Fig.3.1.1 indicates the “Off” state of the unit after power on. The state shown in Fig.3.1.2 indicates the “On” state of the unit after powered on.
  • Page 34 Service Manual • Timer off setting: Under on-state of the unit without timer setting, if Timer button is pressed, LCD will display xx. Hour, with OFF blinking. In this case, press▲ or ▼ button to adjust timer on and then press Timer to confirm. •...
  • Page 35 Service Manual Timer range: 0.5-24hr. Every press of ▲or ▼ will make the set time increased or decreased by 0.5hr. If either of them is pressed continuously, the set time will increase/ decrease by 0.5hr every 0.5s. 3.6 Swing Setting Swing On: Press Function under on state of the unit to activate the swing function.
  • Page 36 Service Manual 3.8 Turbo Setting Turbo function: The unit at the high fan speed can realize quick cooling or heating so that the room temperature can quickly approach the setting value. In the Cooling or Heating mode, press Function until the unit enters the Turbo setting status and then press Enter/Cancel to confirm the setting.
  • Page 37 Service Manual 3.9 Blow Setting Blow function: After the unit is turned off, the water in evaporator of indoor unit will be automatically evaporated to avoid mildew. In the Cooling or Dry mode, press Function till the unit enters the Blow setting status and then press Enter/Cancel to active this function. When the Blow function is activated, press Function to the Blow setting status and then press Enter/Cancel to cancel this function.
  • Page 38 Service Manual Notes: (1) When the Blow function is activated, if turning off the unit by pressing On/Off or by the remote controller, the indoor fan will run at the low fan speed for 2 min, with “BLOW” displayed on the LCD. While, if the Blow function is deactivated, the indoor fan will be turned off immediately.
  • Page 39 Service Manual Fig.4.2 Fig.4.2 Fig.4.2 shows the installation steps of the wired controller , but there are some issues that need your attention. (1) Prior to the installation, please first cut off the power supply of the wire buried in the installation hole, that is, no operation is allowed with electricity during the whole installation.
  • Page 40 Service Manual 5 Errors Display If there is an error occurring during the operation of the system, the error code will be displayed on the LCD, as show in Fig.5.1. If multiple errors occur at the same time, their codes will be displayed sequentially. Note: In event of any error, please turn off the unit and contact a certified technician.

  • Page 41: Troubleshooting

    8. Troubleshooting 8.1 Flashing LED of Indoor/Outdoor Unit and Primary Judgment Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF...
  • Page 42 Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code 0.5s Display...
  • Page 43 Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code 0.5s Display...
  • Page 44 Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code 0.5s Display...
  • Page 45 Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code 0.5s Display...
  • Page 46 Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code 0.5s Display...
  • Page 47 Display Method of Indoor Unit Display Method of Outdoor Unit Indicator Display (during Indicator has 3 kinds of display blinking, ON 0.5s and OFF status and during blinking, ON Dual-8 Malfunction A/C status Possible Causes 0.5s) 0.5s and OFF 0.5s Code Name Operation...
  • Page 48 Compressor starts normally...
  • Page 49 Analysis or processing of some of the malfunction displays: 1. Compressor discharge protection 2. Low voltage overcurrent protection 3. Communication malfunction 4. Sensor open or short circuit 5. Compressor overload protection 6. System malfunction 7. IPM module protection . Then...

  • Page 50: How To Check The Main Parts

    8.2 How to Check the Main Parts Indoor unit 1. Malfunction of Temperature Sensor F1, F2 Start eliminated eliminated eliminated...
  • Page 51 2.Malfunction of Blocked Protection of IDU Fan Motor H6 Start Turn the fan blades by hand under power-off condition Adjust the motor and blade Whether the fan blades assembly so that rotor can run can run smoothly? smoothly. Turn unit on to check whether the malfunction is eliminated.
  • Page 52 3. Malfunction of Protection of Jumper Cap C5 Start eliminated eliminated eliminated...
  • Page 53 4. Malfunction of Overcurrent Protection E5 Start eliminated eliminated eliminated eliminated model eliminated eliminated opened completely) eliminated...
  • Page 54 5. Malfunction of Zero-crossing Inspection Circuit Malfunction of the IDU Fan Motor U8 Start...
  • Page 55 6. Malfunction of Communication E6 Start Cut off power supply. Check if connection line of IDU and ODU and the wire inside electric box are correctly connected. Connect the line Correct connection? according to Malfunction eliminated? wiring diagram. Main board matches Match correctly with display board? Main board of Malfunction eliminated?
  • Page 56 Outdoor unit (1) Capacitor charge fault (Fault with outdoor unit) (AP1 below refers to the outdoor control panel) Main Check Points: Use AC voltmeter to check if the voltage between terminal L and N on the wiring board is within 210VAC~240VAC. If the reactor (L) is correctly connected? If the connection is loose or fell? If the reactor (L) is damaged? Fault diagnosis process: Turn on the unit...
  • Page 57 (2) IPM Protection, Out-of-step Fault, Compressor Phase Overcurrent (AP1 below refers to the outdoor control panel) Main check points: If the connection between control panel AP1 and compressor COMP is secure? If loose? If the connection is in correct order? If the voltage input of the machine is within normal range? (Use AC voltmeter to measure the voltage between terminal L and N on the wiring board XT) If the compressor coil resistance is normal? If the insulation of compressor coil against the copper tube is in good condition?
  • Page 58 (3)High temperature and overload protection diagnosis (AP1 hereinafter refers to the control board of the outdoor unit) Mainly detect: Is outdoor ambient temperature in normal range? Are the outdoor and indoor fans operating normally? Is the heat dissipation environment inside and outside the unit good? Fault diagnosis process: Overheat and high temperature protection...
  • Page 59 (4) Start-up failure (following AP1 for outdoor unit control board) Mainly detect: Whether the compressor wiring is connected correctly? Is compressor broken? Is time for compressor stopping enough time? Fault diagnosis process: Power on the unit Restart it after Is stop time of the compressor 3 minutes longer than 3 minutes? Does startup fail?
  • Page 60 (5) Out of step diagnosis for the compressor (AP1 hereinafter refers to the control board of the outdoor unit) Mainly detect: Whether the system pressure is too high? Whether the input voltage is too low? Fault diagnosis process: Out of step occurs in Out of step occurs once the operation unit is powered on.
  • Page 61 (6)Overload and air exhaust malfunction diagnosis (following AP1 for outdoor unit control board) Mainly detect: Wether the PMV is connected well or not? Is PMV damaged? Is refrigerant leaked? Fault diagnosis process: 20 minutes after the complete unit is powered off Is the terminal FA for the Connect the electronic expansion valve...
  • Page 62 (7)Power factor correct or (PFC) fault (a fault of outdoor unit) (AP1 hereinafter refers to the control board of the outdoor unit) Mainly detect: Check if the reactor (L) of the outdoor unit and the PFC capacitor are broken Fault diagnosis process: Start Check wiring of the reactor (L) of the...
  • Page 63 (8) Communication malfunction: (following AP1 for outdoor unit control board) Mainly detect: Is there any damage for the indoor unit mainboard communication circuit? Is communication circuit damaged? Detect the indoor and outdoor units connection wire and indoor and outdoor units inside wiring is connect well or not, if is there any damage? Fault diagnosis process: Start...
  • Page 64 (9) Communication malfunction:(following AP1 for outdoor unit control board) Mainly detect: Detect the indoor and outdoor units connection wire and indoor and outdoor units inside wiring is connect well or not, If is there any damage? Is there any damage for the indoor unit mainboard communication circuit? Is communication circuit damaged? The flow chart malfunction detect: Start Did the equipment operate...
  • Page 65 High-pressure protection Use pressure gauge to Measure if the pressure switch Replace the mainboard of measure if the pressure is is normal outdoor unit really high? Check if the operation mode of Set the correct operation Replace the pressure switch indoor unit is set properly? mode Check if the gas valve and...

  • Page 66: Troubleshooting For Normal Malfunction

    8.3 Troubleshooting for Normal Malfunction 1. Air Conditioner Doesn't Start connected well. or poor connection for wiring correctly once improper Repair or replace remote controller 2. Poor Cooling (Heating) for Air Conditioning Unit conditioner Add refrigerant. range 3. Horizontal Louver Doesn't Swing connection diagram Stepping motor can't operate...
  • Page 67 4. ODU Fan Motor Doesn't Operate connection diagram damaged fan capacitor. 5. Compressor Doesn't Operate connection diagram damaged fan capacitor. 6. Air Conditioning Unit is Leaking pipe Replace drain pipe 7. Abnormal Sound and Vibration conditioner Replace magnetic coil coil...

  • Page 68: Removal Procedures

    Service Manual 9. Removal Procedures Warning: Be sure to wait for a minimum of 20 minutes after turning off all power supplies and reclaim the refrigerant 9.1 Removal Procedures of Indoor Unit completely before removal. A3 panel as an example: Steps Procedure 1.Before disassembly of the unit...
  • Page 69 Service Manual Steps Procedure 3.Remove display display Remove 2 screws securing display, and then remove the filter. 4.Remove panel clasp Pull the clasps at both sides slightly, and then remove the panel. panel 5.Remove horizontal louver Remove the axial bush on the horizontal louver, and then remove the horizontal louver.
  • Page 70 Service Manual Steps Procedure 6.Remove top cover of electric box Remove screws fixing the top cover of electric box. screw Remove the top cover of electric box. top cover of electric box screw cap 7.Remove front case Remove the screw caps on front case. screw Remove screws connecting the front case.
  • Page 71 Service Manual Steps Procedure 8. Remove grounding wire screw Remove grounding screws, and then remove the grounding wire. 9.Remove electric box cover clasp Loosen clasps at the left side of electric box. Loosen clasps on the right side of electric box. clasp electric box cover Remove electric box cover.
  • Page 72 Service Manual Steps Procedure 10.Remove temperature sensor Pull out the indoor temperature sensor. temperature sensor 11.Remove electric box Pull out 6 sockets on PCB board. Pull out 2 screws on electric box. screw electric box Remove the electric box.
  • Page 73 Service Manual Steps Procedure 12.Remove water tray water tray Pull the water tray upwards, and then remove the water tray. 13.Remove connection pipe between indoor and outdoor units Separate the connection pipe between indoor and outdoor units. connection position for indoor and outdoor units' connection pipe 14.Remove pipe-stopping plate Remove two screws on pipe-stopping plate for indoor unit, and then remove the pipe-stopping...
  • Page 74 Service Manual Steps Procedure 16.Remove evaporator screw Remove screws between evaporator and bottom case. Turn over the indoor unit and adjust the pipe line to the position as shown by the broken line. Lift up the evaporator, and then remove the evaporator.
  • Page 75 Service Manual Steps Procedure 18.Remove cross flow blade and motor blade motor Remove screws fixing cross flow blade and motor. Remove the motor sub-assy. Separate two cross flow blades.
  • Page 76 Service Manual Steps Procedure 19.Remove cushion rubber Remove the cushion rubber on cross flow blade. cushion rubber Remove the cushion rubber from the base.

  • Page 77: Removal Procedures Of Outdoor Unit

    Service Manual 9.2 Removal Procedures of Outdoor Unit Note: Heat pump unit as an example: Steps Procedure 1. Remove big handle, valve cover and top cover Remove the screw connecting the big handle and right side plate, and then remove the big handle. Remove the screw connecting the valve cover and right side plate, and then remove the valve cover.
  • Page 78 Service Manual Steps Procedure 4.Remove grille and panel Twist off the screws connecting the grille and panel, and then remove the grille. Twist off the screws connecting the panel, chassis and motor support and then remove the panel. grille panel 5.Remove right side plate right side plate Twist off the screws connecting the right side...
  • Page 79 Service Manual Steps Procedure 7.Remove electric box electric box Twist off the screws on electric box, cut off the tieline with scissors or pliers, pull out the wiring terminal, pull it upwards to remove the electric box. Twist off the screws on electric box cover and electric box then remove the electric box cover.
  • Page 80 Service Manual Steps Procedure 9.Remove motor support Twist off the tapping screws securing the motor support, pull it upward and then remove the motor support. motor support 10.Remove isolation sheet Twist off the screws connecting isolation sheet and end plate of condenser and chassis, and then remove the isolation sheet.
  • Page 81 Service Manual Steps Procedure 12.Remove gas valve and liquid valve Twist off the 2 bolts fixing the valve sub-assy. Unsolder the joint between gas valve and air- return pipe and then remove the gas valve. (Note: When unsoldering the joint, wrap the gas valve with wet cloth completely to avoid damage gas valve to valve, and release all refrigerant completely...
  • Page 82 Service Manual Steps Procedure 15.Remove left side plate Twist off the screws connecting the left side plate and chassis with screwdriver, and then remove the left side plate. left side plate 16.Remove chassis and condenser Pull it upward to separate the chassis and condenser.

  • Page 83: Appendix

    Service Manual Appendix: Appendix 1: Reference Sheet of Celsius and Fahrenheit Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1.8+32 Set temperature Fahrenheit Fahrenheit Fahrenheit display Fahrenheit display Fahrenheit display Fahrenheit Celsius （℃） Celsius （℃） Celsius （℃） temperature temperature temperature （℉）...

  • Page 84: Appendix 3: Pipe Flaring Method

    Service Manual Appendix 3: Pipe Flaring Method Pipe Note: Improper pipe flaring is the main cause of refrigerant leakage. Please Pipe cutter flare the pipe according to the following steps: Leaning Uneven Burr A:Cut the pipe ● Confirm the pipe length according to the distance of indoor unit and outdoor unit. ●...

  • Page 85: Appendix 4: List Of Resistance For Temperature Sensor

    Service Manual Appendix 4: List of Resistance for Temperature Sensor Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units(15K) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) -2.2 138.1 18.75 138.2 3.848 208.4 1.071 -0.4 128.6 69.8 17.93 3.711 210.2 1.039...
  • Page 86 Service Manual Resistance Table of Tube Temperature Sensors for Indoor and Outdoor (20K) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) -2.2 181.4 25.01 138.2 5.13 208.4 1.427 -0.4 171.4 69.8 23.9 4.948 210.2 1.386 162.1 71.6 22.85 141.8 4.773 1.346 153.3 73.4...
  • Page 87 Service Manual Resistance Table of Discharge Temperature Sensor for Outdoor(50K) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) -20.2 853.5 120.2 18.34 190.4 4.754 -18.4 799.8 51.8 93.42 17.65 192.2 4.609 -16.6 53.6 89.07 123.8 16.99 4.469 -14.8 703.8 55.4 84.95 125.6 16.36...
  • Page 89 Product improvement, specifications and appearance in this manual are subject to change without prior notice. LIT - 12012194 © Johnson Controls, Inc. USA...

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