1. Manuals
  2. Brands
  3. Blueridge Manuals
  4. Air Conditioner
  5. S2 Series
  6. Service manual

Blueridge S2 Series Service Manual

9000/12000/18000/24000/30000/36000 btu 18/18.5/19.5/20.8/21/21.4/21.5/21.7 seer2 115v / 208/230v minisplit heat pump
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
S2 Series Service Manual
S2 SERIES
BMX922*
9000 BTU 21.5 SEER2 115V Minisplit Heat Pump
BMX1220
12000 BTU 20.8 SEER2 115V Minisplit Heat Pump
BMY922*
9000 BTU 21.7 SEER2 208/230V Minisplit Heat Pump
BMY1221
12000 BTU 21.4 SEER2 208/230V Minisplit Heat Pump
BMY1820
18000 BTU 19.5 SEER2 208/230V Minisplit Heat Pump
BMY2419
24000 BTU 18.5 SEER2 208/230V Minisplit Heat Pump
BMY3020*
30000 BTU 21 SEER2 208/230V Minisplit Heat Pump
BMY3618
36000 BTU 18 SEER2 208/230V Minisplit Heat Pump
* energy star
certified

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the S2 Series and is the answer not in the manual?

Questions and answers

Related Manuals for Blueridge S2 Series

Summary of Contents for Blueridge S2 Series

  • Page 1 S2 Series Service Manual S2 SERIES BMX922* 9000 BTU 21.5 SEER2 115V Minisplit Heat Pump BMX1220 12000 BTU 20.8 SEER2 115V Minisplit Heat Pump BMY922* 9000 BTU 21.7 SEER2 208/230V Minisplit Heat Pump BMY1221 12000 BTU 21.4 SEER2 208/230V Minisplit Heat Pump BMY1820 18000 BTU 19.5 SEER2 208/230V Minisplit Heat Pump...
  • Page 2 Service Manual S2 Series Quick Specs MOX230-09HFN1 MOX230-09HFN1- BMX922C BMY922C -BS5W MT0W MOX230-12HFN1 MOX230-12HFN1- BMX1220C BMY1221C -BS8W MS8W MOX330-18HFN1 MOX430-24HFN1- BMY1820C BMY2419C -MS0W MR0W MOD30-30HFN1- MOD31-36HFN1- BMY3020C BMY3618C MS0W MP0W MSAG11A-09HR MSAG11A-09HRF BMX922WM BMY922WM FN1-BS5W N1-MT0W MSAG11B-12HR MSAG11B-12HRF BMX1220WM BMY1221WM...

  • Page 3: Table Of Contents

    Table of Contents §. Safety Precautions Precautions Information servicing(For flammable materials) §. Specifications Model Reference Pipe length and the Drop Height Electrical Wiring Diagrams §. Product Features Display Function Safety Features Basic Features §. Maintenance First Time Installation Check Refrigerant Recharge Re-Installation §.
  • Page 4 Table of Contents §. Troubleshooting Safety Caution General Troubleshooting Complain Record Form Information Inquiry Error Diagnosis and Troubleshooting Without Error Code Quick Maintenance by Error Code Troubleshooting by Error Code Check Procedures Appendix Temperature Sensor Resistance Value Table for T1,T2,T3 and T4 (°C – K) Temperature Sensor Resistance Value Table for TP(for some units) (°C –...

  • Page 6: Safety Precautions

    Safety Precautions Contents Precautions......................2 Information servicing(For flammable materials)..........3...

  • Page 7: Precautions

    1. Precautions CAUTION To prevent personal injury, or property or unit damage, • While unpacking be careful of sharp edges around adhere to all precautionary measures and instructions the unit as well as the edges of the fins on the con- denser and evaporator.

  • Page 8: Information Servicing(For Flammable Materials)

    2. Information servicing(For • Prior to work taking place, the area around the equipment is to be surveyed to make sure that there are no flammable flammable materials) hazards or ignition risks. • NO SMOKING signs shall be displayed. Checks to the area Ventilated area •...

  • Page 9: Detection Of Flammable Refrigerants

    • that capacitors are discharged: this shall be done in shall also take into account the effects of aging or a safe manner to avoid possibility of sparking; continual vibration from sources such as compressors or fans. • that there no live electrical components and wiring are exposed while charging, recovering or purging 2.13 Detection of flammable refrigerants the system;...

  • Page 10: Charging Procedures

    • The refrigerant charge shall be recovered into the • Before attempting the procedure ensure that: correct recovery cylinders. The system shall be flushed • mechanical handling equipment is available, if with OFN to render the unit safe. This process may required, for handling refrigerant cylinders;...
  • Page 11 • Empty recovery cylinders are evacuated and, if • The recovered refrigerant shall be returned to the possible, cooled before recovery occurs. refrigerant supplier in the correct recovery cylinder, and the relevant Waste Transfer Note arranged. Do not • The recovery equipment shall be in good working mix refrigerants in recovery units and especially not in order with a set of instructions concerning the cylinders.

  • Page 12: Specifications

    Specifications Contents Model Reference....................2 Pipe Length and Drop Height ................3 Electrical Wiring Diagrams ..................4...

  • Page 13: Model Reference

    1. Model Reference Refer to the following table to determine the specific indoor and outdoor unit model. Capacity Indoor Unit Model Outdoor Unit Model Power Supply (Btu/h) BMX922WM BMX922C 115V~, 60Hz, 1Phase BMX1220WM BMX1220C BMY922WM BMY922C BMY1221WM BMY1221C BMY1820WM BMY1820C 208-240~, 60Hz, 1Phase BMY2419WM...

  • Page 14: Pipe Length And The Drop Height

    2. Pipe Length and Drop Height The length and elevation of connection pipe are shown in the table below. if the pipe length exceeds max pipe length, additional refrigerant should be charged to ensure nominal cooling/heating capacity. Capacity(Btu/h) Standard Length Max Pipe Length Max Elevation Additional Refrigerant...

  • Page 15: Electrical Wiring Diagrams

    3. Electrical Wiring Diagrams Indoor and outdoor unit wiring diagram Indoor Unit Outdoor Unit IDU Model IDU Wiring Diagram ODU Model ODU Wiring Diagram BMX922WM BMX922C 16022000035851 BMX1220WM BMX1220C 16022000020361 BMY922WM BMY922C 16022000035853 BMX1221WM BMY1221C BMY1820WM BMY1820C 16022000035849 BMY2419WM BMY2419C 16022000019694 BMY3020WM BMY3020C...

  • Page 16: Outdoor Unit

    Outdoor unit printed circuit board diagram Outdoor Unit ODU Model ODU Printed Circuit Board BMX922C 17122000047115 BMX1220C BMY922C 17122000048121 BMY1221C 17122000046453 BMY1820C 17122000048064 BMY2419C BMY3020C 17122000047742 BMY3618C...
  • Page 17 Indoor unit abbreviations Abbreviation Paraphrase Yellow-Green Conductor Positive and Negative Ion Generator Capacitor PLASMA Electronic Dust Collector LIVE NEUTRAL Outdoor unit abbreviations Abbreviation Paraphrase 4-WAY Gas Valve Assembly/4-WAY VALVE AC-FAN Alternating Current FAN DC-FAN Direct Current FAN COMP Compressor L-PRO Low Pressure Switch H-PRO High Pressure Switch...

  • Page 18: Main Board

    OPTIONAL OPTIONAL OPTIONAL I NDOOR FAN INDOOR WIRING DIAGRAM Applicable to AC motor only 16022000020361 OPTIONAL 5(3or2) C N27 P _1 C N13 C N12 C N19 C N22 P L A S M A / U V C C N26 SWITCH BOARD OPTIONAL MAIN BOARD...
  • Page 23 BLACK OPTIONAL BLUE OPTIOna l COMP_TOP CN3 2 CN2 9 CN3 0 CN2 6 CN4 2 CN1 6 BLACK BLUE CN2 0 OPTIONAL HE AT1 CN 8 BLACK CN2 1 WHITE OPTIONAL HE AT2 CN3 6 BLACK CN1 2 CN 11 CN2 7 BLUE WAY1...
  • Page 24 Outdoor unit printed circuit board diagram: 17122000047115...
  • Page 25 Name Meaning Earth: connect to Ground N_in: connect to N-line (100-130V AC input) Power Supply L_in: connect to L-line (100-130V AC input) CN16 S: connect to indoor unit communication 4-WAY CN60 connect to 4 way valve, 100-130V AC when is ON. HEAT1 CN17 connect to compressor heater, 100-130V AC when is ON...
  • Page 26 Outdoor unit printed circuit board diagram: 17122000044714, 17122000048121,17122000046453...
  • Page 27 Name Meaning Earth: connect to Ground N_in: connect to N-line (208-230V AC input) CN1A L_in: connect to L-line (208-230V AC input) CN16 S: connect to indoor unit communication HEAT1 CN17 connect to compressor heater, 208-230V AC when is ON 4-WAY CN60 connect to 4 way valve, 208-230V AC when is ON.
  • Page 28 Outdoor unit printed circuit board diagram: 17122000041117, 17122000034170...
  • Page 29 Name Meaning Earth: connect to Ground N_in: connect to N-line (208-230V AC input) Power Supply L_in: connect to L-line (208-230V AC input) S: connect to indoor unit communication 4-WAY CN60 connect to 4 way valve, 208-230V AC when is ON. HEAT1 CN16 connect to compressor heater, 208-230V AC when is ON...
  • Page 30 Outdoor unit printed circuit board diagram: 17122000047742...
  • Page 31 Name Meaning CN11 N_in: connect to N-line (208-230V AC input) Power Supply CN12 L_in: connect to L-line (208-230V AC input) EEV-A CN16 EEV-B CN13 EEV-C EEV-D CN15 connect to electric expansion valve EEV-E EEV-F CN17 EEV-G CN14 connect to pipe temp. sensor T3, ambient temp. sensor T4, exhaust T3 T4 TP CN26 temp.
  • Page 32 Name Meaning HEAT_D CN20 connect to the heater, 208-230V AC when is ON CN21 HEAT_Y CN36 4-WAY CN38 connect to 4 way valve, 208-230V AC when is ON. CN27 connect to key board CN1 Note: This section is for reference only. Please take practicality as standard.
  • Page 33 IC403 IC405 7805 CN505 C413 R405 CN506 C 403 R 308 R406 R203 R42 1 R107 R40 8 C106 R512 R 407 R223 C114 R513 R204 C10 1 C803 R106 C204 C 211 C310 C20 7 C 212 C103 C 112 C 514 D103 C513...
  • Page 34 Name Meaning Earth: connect to Ground N_in: connect to N-line (208-230V AC input) Power Supply L_in: connect to L-line (208-230V AC input) S: connect to indoor unit communication 4-WAY CN60 connect to 4 way valve, 208-230V AC when is ON. AC-FAN connect to AC fan HEAT2...
  • Page 35 Product Features Contents Display Function ....................2 Safety Features ......................3 Basic Functions.......................4 Abbreviation....................4 Fan Mode......................4 Cooling Mode ....................4 Heating Mode(Heat Pump Units) ..............5 Auto-mode....................7 Drying Mode ....................7 Forced Operation Function ................7 Timer Function ....................7 Sleep Function....................7 Auto-Restart Function..................8 Active Clean function ..................8 Follow me(Optional) ..................8 8°C Heating(Optional) ...................8 Silence (Optional) ..................8...

  • Page 36: Display Function

    1. Display Function Unit display functions fresh defrost run timer Display A Display B Display Function fresh Fresh(available on select units only) defrost Defrost When the unit is on timer When TIMER is on WiFi control (available on select units only) Temperature value Temperature Activation of Timer ON, Fresh, Swing, Turbo, or Silent...

  • Page 37: Safety Features

    2. Safety Features Compressor three-minute delay at restart Compressor functions are delayed for up to ten seconds upon the first startup of the unit, and are delayed for up to three minutes upon subsequent unit restarts. Automatic shutoff based on discharge temperature If the compressor discharge temperature exceeds a certain level for a period of time, the compressor ceases operation.

  • Page 38: Basic Functions

    3. Basic Functions frequency(FminC). • Compressor runs at FminC more than 10 minutes. Abbreviation • T1 is lower than or equal to (Tsc-CDIFTEMP). Note: CDIFTEMP is EEPROM setting parameter. It is 2°C Unit element abbreviations usually. Abbreviation Element 3) If one of the following conditions is satisfied, not judge protective time.

  • Page 39: Heating Mode(Heat Pump Units)

    For AC fan motor units: level per 1 minute. • Hold: Keep the current frequency. • Resume: No limitation for frequency. 3.4 Heating Mode(Heat Pump Units) 3.4.1 Compressor Control 1) Reach the configured temperature • If the following conditions are satisfied, the compressor ceases operation.

  • Page 40: Defrosting Mode

    2) Auto fan defrosting ends and the machine switches to normal heating mode: For DC fan motor units: • T3 rises above TCDE1°C. • Rise curve • T3 maintained above TCDE2°C for 80 seconds. • When T1-Tsc is higher than -1.5°C, fan speed •...

  • Page 41: Auto-Mode

    • Decrease: Decrease the running frequency to the lower following signals: level per 20 seconds. • Switch on • Hold: Keep the current frequency. • Switch off • Resume: No limitation for frequency. • Timer on • Timer off Auto-mode •...

  • Page 42: Auto-Restart Function

    • The operational process for sleep mode is as follows: you press “Follow Me,” the function turns off. The unit regulates temperature based on its own sensor • When cooling, the temperature rises 1°C (to not and settings. higher than 30°C) every hour. After 2 hours, the temperature stops rising and the indoor fan is fixed 3.13 8°C Heating(Optional) at low speed.

  • Page 43: Breeze Away Function(Optional)

    3.17 Breeze Away function (Optional) • This feature avoids direct airflow blowing on the body and makes you feel indulging in silky coolness. • NOTE: This feature is available under cooling mode, fan-only mode and drying mode. 3.18 Wireless Control (Optional) •...

  • Page 44: Maintenance

    Maintenance Contents First Time Installation Check .................2 Refrigerant Recharge ....................4 Re-Installation .......................5 Indoor Unit....................5 Outdoor Unit....................7...

  • Page 45: First Time Installation Check

    1. First Time Installation Check Air and moisture trapped in the refrigerant system affects To prevent air and moisture from affecting the air the performance of the air conditioner by: conditioner’s performance, the indoor unit, as well as the pipes between the indoor and outdoor unit, must be be •...
  • Page 46 Procedure: • If the pressure successfully reaches -0.1 MPa Tighten the flare nuts of the indoor and outdoor (14.5 Psi), fully close the Handle Lo valve, then units, and confirm that both the 2- and 3-way valves cease vacuum pump operations. are closed.

  • Page 47: Refrigerant Recharge

    2. Refrigerant Recharge (2OW[OJ YOJK) (5[ZJUUX [TOZ) (/TJUUX [TOZ) : ] U - ] G _ \GR\K 5VKT (-GY YOJK) :NXKK-]G_ \GR\K )NKIQ \GR\K 5VKT )NGXMOTM I_ROTJKX 5 6 + 4 )259+ O F F :KSVKXGZ[XK 9KTYUX mA A +RKIZXUTOI YIGRK Procedure: Close both 2- and 3-way valves.

  • Page 48: Re-Installation

    3. Re-Installation Indoor Unit Collecting the refrigerant into the outdoor unit (5[ZJUUX [TOZ) (2OW[OJ YOJK) (/TJUUX [TOZ) : ] U - ]G_ \GR\K )RUYK (-GY YOJK) :NXKK-]G_ \GR\K 5VKT )RUYK )RUYK Procedure: Confirm that the 2- and 3-way valves are opened. Close the 3-way valve so that the gauge rests between 0.3 MPa (43.5 Psi) and 0.5 MPa (72.5 Psi).

  • Page 49: Air Purging With Vacuum Pump

    Air purging with vacuum pump (2OW[OJ YOJK) (5[ZJUUX [TOZ) (/TJUUX [TOZ) : ] U - ]G_ \GR\K )RUYK (-GY YOJK) 3GTOLURJ \GR\K :NXKK-]G_ \GR\K ) U S V U [ T J SKZKX 6XKYY[XK )RUYK MG[MK - 0 . l 3 6 G .GTJRK 2U .GTJRK .O )NGXMK NUYK...

  • Page 50: Outdoor Unit

    Outdoor Unit Evacuation for the whole system (2OW[OJ YOJK) (/TJUUX [TOZ) (5[ZJUUX [TOZ) : ] U - ]G_ \GR\K 5VKT (-GY YOJK) :NXKK-]G_ \GR\K 5VKT 5 6 + 4 < G I [ [ S V [ S V ) 2 5 9 + Procedure: Wait for 5 minutes then check whether the gauge Confirm that the 2- and 3-way valves are opened.

  • Page 51: Refrigerant Charging

    Refrigerant charging (2OW[OJ YOJK) (5[ZJUUX [TOZ) (/TJUUX [TOZ) : ] U - ] G _ \GR\K 5VKT (-GY YOJK) :NXKK-]G_ \GR\K )NKIQ \GR\K 5VKT )NGXMOTM I_ROTJKX 5 6 + 4 )259+ O F F :KSVKXGZ[XK 9KTYUX mA A +RKIZXUTOI YIGRK Procedure: Close both 2- and 3-way valves.
  • Page 52 Indoor Unit Disassembly Contents Dimension ......................2 Indoor Unit Disassembly(7k~24k).................3 Front Panel....................3 Electrical parts ....................9 Evaporator....................11 Fan motor and fan..................13 Step motor ....................15 Drain Hose ....................16 Indoor Unit Disassembly(27k~36k)..............17 Front Panel....................17 Electrical parts .....................23 Evaporator....................25 Fan motor and fan..................28 Step motor ....................29 Drain Hose ....................31...

  • Page 53: Dimension

    1. Dimension Capacity Body Code W(mm/inch) D(mm/inch) H(mm/inch) 6K~11K 729/28.7 200/7.87 292/11.5 8K~14K 802/31.57 200/7.87 295/11.61 12K~21K 971/38.23 228/8.98 321/12.64 18K~28K 1082/42.6 234/9.21 337/13.27 27K~36K 1259/49.57 283/11.14 362/14.25  Indoor Unit Disassembly 2 ...

  • Page 54: Indoor Unit Disassembly(7K~24K)

    2. Indoor Unit Disassembly 1. Front Panel Procedure Illustration 1) Hold the front panel by the tabs on Front Panel the both sides and lift it (see CJ_ AG_001). CJ_AG_001 2) Push up the bottom of an air filter (step 1), and then pull it out downwards (step 2) (see CJ_AG_002).
  • Page 55 Procedure Illustration 3) Open the horizontal louver and push the hook towards left to open it (see CJ_AG_003). Horizontal Louver Hook CJ_AG_003 4) Bend the horizontal louver lightly by both hands to loosen the hooks, then remove the horizontal louver (see CJ_AG_003).
  • Page 56 Procedure Illustration 5) Pry the electrical cover by a screw driver, and rotate it towars left, then remove it. (see CJ_AG_005). CJ_AG_005 6) Disconnect the connector for display board. (see CJ_AG_006) . 7) Slid the front panel side to side to release each axis (see CJ_AG_006) CJ_AG_006 Note: This section is for reference only.
  • Page 57 Procedure Illustration 8) Open the screw cap and then remove the 3 screws (see CJ_AG_008). CJ_AG_007 9) Release the hooks with hands. (see CJ_AG_008) CJ_AG_008 Note: This section is for reference only. Actual unit appearance may vary.  Indoor Unit Disassembly 6 ...
  • Page 58 Procedure Illustration Release the 5 hooks in the back (see CJ_AG_009). CJ_AG_009 Pull out the panel frame while pushing the hook through a clearance between the panel frame and the heat exchanger. (see CJ_AG_010) CJ_AG_010 Note: This section is for reference only. Actual unit appearance may vary. ...
  • Page 59 Procedure Illustration Release the 5 hooks of the vertical blades, then pull the vertical blades rightward and remove it (see CJ_ AG_011). CJ_AG_011 Remove 1 screw of the display board. (see CJ_AG_012). Rotate the display board in the direction shown in the right picture. (see CJ_AG_012 ).

  • Page 60: Electrical Parts

    2.2 Electrical parts (Antistatic gloves must be worn.) Note: Remove the front panel (refer to 1. Front panel) before disassembling electrical parts. Procedure Illustration 1) Remove one fixing screw of electrical control box subassembly. (see CJ_ AG_013). (If you want to repair the electrical control box components, perform the first step;If you want to repair the main control board assembly, perform steps 2 to 5 below.)
  • Page 61 Procedure Illustration 4) Pull out the electrical main board along the direction indicated in right image. (see CJ_AG_015). CJ_AG_015 Fan motor swing motor ION(some models) 5) Disconnect the connectors and remove main control board. (see CJ_AG_016). CJ_AG_016 Note: This section is for reference only. Actual unit appearance may vary. ...

  • Page 62: Evaporator

    2.3 Evaporator Note: Remove the front panel and electrical parts (refer to 1. Front panel and 2. Electrical parts) before disassembling evaporator. Procedure Illustration 1) Disassemble the pipe holder located at the rear of the unit (see CJ_AG_017). CJ_AG_017 2) Remove the 1 screw on the evaporator located at the fixed plate (see CJ_AG_018).
  • Page 63 Procedure Illustration 3) Remove 1 screw and release the hook on the evaporator (see CJ_AG_019). CJ_AG_019 4) Remote the 2 screws on the evaporator located at the fixed plate (see CJ_AG_020). CJ_AG_020 5) Pull out the evaporator (see CJ_AG_021). CJ_AG_021 Note: This section is for reference only.

  • Page 64: Fan Motor And Fan

    2.4 Fan motor and fan Note: Remove the front panel, electrical parts and evaporator (refer to 1. Front panel, 2. Electrical parts, and 3. Evaporator). before disassembling fan motor and fan. Procedure Illustration 1) Remove the two screws and remove the fixing board of the fan motor (see CJ_ AG_022).
  • Page 65 Procedure Illustration 3) Remove the fixing screw (see CJ_AG_024). 4) Pull out the fan motor and fan assembly from the side. CJ_AG_024 Fixing Screw Note: This section is for reference only. Actual unit appearance may vary.  Indoor Unit Disassembly 14 ...

  • Page 66: Step Motor

    2.5 Step motor Note: Remove the front panel and electrical parts (refer to 1. Front panel, 2. Electrical parts) before disassembling step motor. Procedure Illustration 1) Remove the two screws, then remove the horizontal swing motor(see CJ_AG_025). Stepping Motor CJ_AG_025 2) Remove 1 screw, then remove the vertical swing motor (see CJ_AG_026).(for some units)

  • Page 67: Drain Hose

    2.6 Drain Hose Procedure Illustration 1) Rotate the fixed wire clockwise indicated in right image (see CJ_AG_027). CJ_AG_027 2) Pull up the drain hose to remove it (see CJ_AG_028). CJ_AG_028 Note: This section is for reference only. Actual unit appearance may vary. ...

  • Page 68: Indoor Unit Disassembly(27K~36K)

    3. Indoor Unit Disassembly(27k~36k) Front Panel Procedure Illustration 1) Hold the front panel by the tabs on the both sides and lift it (see CJ_ AG(36)_001). CJ_AG(36)_001 2) Push up the bottom of an air filter (step 1), and then pull it out downwards (step 2) (see CJ_ AG(36)_002).
  • Page 69 Procedure Illustration 3) Open the horizontal louver(below) and bend the louver lightly to loosn the leftmost hook, then push the hook towards right to loosn the sencond hook. (see CJ_AG(36)_003). 4) Remove the horizontal louver(below) towords left.(see CJ_AG(36)_003). CJ_AG(36)_003 5) Remove the horizontal louver(above) with the same way.(see CJ_ AG(36)_004).
  • Page 70 Procedure Illustration 6) Pry the electrical cover by a screw driver, and rotate it towars left, then remove it. (see CJ_AG(36)_005). CJ_AG(36)_005 7) Pull out the connector wire, and then disconnect the connector for display board. (see CJ_AG(36)_006) . CJ_AG(36)_006 Note: This section is for reference only.
  • Page 71 Procedure Illustration 8) Slid the front panel side to side to release each axis (see CJ_AG(36)_007) CJ_AG(36)_007 9) Open the screw cap and then remove the 4 screws. (see CJ_AG(36)_008). 10) Remove the 4 screws fixing the panel frame.(see CJ_AG(36)_008). CJ_AG(36)_008 Note: This section is for reference only.
  • Page 72 Procedure Illustration Release the hooks with hands. (see CJ_AG(36)_009) CJ_AG(36)_009 Release the 5 hooks in the back (see CJ_AG(36)_010). CJ_AG(36)_010 Note: This section is for reference only. Actual unit appearance may vary.  Indoor Unit Disassembly 21 ...
  • Page 73 Procedure Illustration Pull out the panel frame while pushing the hook through a clearance between the panel frame and the heat exchanger. (see CJ_AG(36)_011) CJ_AG(36)_011 Remove 1 screw of the display board. (see CJ_AG(36)_012). Rotate the display board in the direction shown in the right picture.

  • Page 74: Electrical Parts

    3.2 Electrical parts (Antistatic gloves must be worn.) Note: Remove the front panel (refer to 1. Front panel) before disassembling electrical parts. Procedure Illustration 1) Remove 2 fixing screws of electrical control box subassembly. (see CJ_ AG(36)_013). CJ_AG(36)_013 2) Disconnect the connectors.(see CJ_ AG(36)_014).
  • Page 75 Procedure Illustration 3) Cut the ribbon by a shear, then pull out the coil temperature sensor (T2) (see CJ_AG(36)_015). 4) Remove one fixing screw of the electronic control box and two screws used for the ground connection (see CJ_AG(36)_015). 5) Remove fixed clamp of temperature sensor (see CJ_AG(36)_015).
  • Page 76 Procedure Illustration 6) Pull out the electrical main board along the direction indicated in right image. (see CJ_AG(36)_016). CJ_AG(36)_016 7) Disconnect the connectors and remove main control board. (see CJ_ AG(36)_017). CJ_AG(36)_017 Note: This section is for reference only. Actual unit appearance may vary. ...

  • Page 77: Evaporator

    3.3 Evaporator Note: Remove the front panel and electrical parts (refer to 1. Front panel and 2. Electrical parts) before disassembling evaporator. Procedure Illustration 1) Disassemble the pipe holder located at the rear of the unit (see CJ_AG(36)_018). CJ_AG(36)_018 2) Remove the 3 screws on the evaporator located at the fixed plate (see CJ_ AG(36)_019).
  • Page 78 Procedure Illustration 3) Remote the 4 screws fixing the fan motor cover (see CJ_AG(36)_020). CJ_AG(36)_020 4) Pull out the evaporator (see CJ_ AG(36)_021). CJ_AG(36)_021 Note: This section is for reference only. Actual unit appearance may vary.  Indoor Unit Disassembly 27 ...

  • Page 79: Fan Motor And Fan

    3.4 Fan motor and fan Note: Remove the front panel, electrical parts and evaporator (refer to 1. Front panel, 2. Electrical parts, and 3. Evaporator). before disassembling fan motor and fan. Procedure Illustration 1) Remove the bearing sleeve (see CJ_ AG(36)_023).

  • Page 80: Step Motor

    3.5 Step motor Note: Remove the front panel and electrical parts (refer to 1. Front panel, 2. Electrical parts) before disassembling step motor. Procedure Illustration 1) Remove the 3 screws, then remove the horizontal swing motor(above)(see CJ_ AG(36)_025). CJ_AG(36)_025 2) Remove the 2 screws, then remove the horizontal swing motor(below)(see CJ_ AG(36)_026) 3) Remove 1 screw, then remove the ionizer...
  • Page 81 Procedure Illustration 4) Remove 1 screw, then remove the Positive and negative ion generator. (see CJ_ AG(36)_026).(for some units)’ CJ_AG(36)_027 5) Remove 2 screws, then remove the vertical swing motor (see CJ_AG(36)_028).(for some units) CJ_AG(36)_028 Note: This section is for reference only. Actual unit appearance may vary. ...

  • Page 82: Drain Hose

    2.6 Drain Hose Procedure Illustration 1) Pull up the drain hose to remove it (see CJ_AG(36)_029). CJ_AG(36)_029 Note: This section is for reference only. Actual unit appearance may vary.  Indoor Unit Disassembly 31 ...
  • Page 83 Outdoor Unit Disassembly Contents Outdoor Unit Table....................2 Dimension ......................3 Outdoor Unit Disassembly ..................16 Panel Plate....................16 Electrical Parts .....................29 Fan Assembly ....................48 Fan Motor ....................49 Sound blanket.....................50 Four-way valve.....................51 Compressor ....................52...

  • Page 84: Outdoor Unit Disassembly

    1. Outdoor Unit Disassembly Outdoor Unit Table Outdoor Unit Model Panel Plate PCB Board X230 PCB Board 8 BMX922C X230 PCB Board 8 BMX1220C X230 PCB Board 6 BMY922C X230 PCB Board 6 BMY1221C X330 PCB Board 6 BMY1820C X430 PCB Board 3 BMY2419C PCB Board 9...

  • Page 85: Dimension

    2. Dimension X130 Panel Plate Outdoor Unit Disassembly 3  ...
  • Page 86 For US models: Outdoor Unit Disassembly 4  ...
  • Page 87 2.2. X230 Panel Plate Outdoor Unit Disassembly 5  ...
  • Page 88 For US models(Rounded grille): Outdoor Unit Disassembly 6  ...
  • Page 89 For US models(Square grille): Outdoor Unit Disassembly 7  ...
  • Page 90 2.3. X330 Panel Plate Outdoor Unit Disassembly 8  ...
  • Page 91 For US models(Rounded grille): Outdoor Unit Disassembly 9  ...
  • Page 92 For US models(Square grille): Outdoor Unit Disassembly 10  ...
  • Page 93 2.4. X430 Panel Plate Outdoor Unit Disassembly 11  ...
  • Page 94 For US models(Rounded grille): Outdoor Unit Disassembly 12  ...
  • Page 95 For US models(Square grille): Outdoor Unit Disassembly 13  ...
  • Page 96 2.5. Panel Plate Outdoor Unit Disassembly 14  ...
  • Page 97 For US models: Outdoor Unit Disassembly 15  ...

  • Page 98: Panel Plate

    3. Outdoor Unit Disassembly Panel Plate 1. D30 Procedure Illustration 1) Turn off the air conditioner and the Big Handle power breaker. 2) Remove the screws of the big handle and then remove the big handle (2 screws) (see CJ_D30_001). CJ_D30_001 Top Cover 3) Remove the screws of the top cover...
  • Page 99 Procedure Illustration 4) Remove the screws of the front right panel and then remove the front right panel (2 screws) (see CJ_D30_003). Front Right Panel CJ_D30_003 5) Remove the screws of the front panel and then remove the front panel (9 screws) (see CJ_D30_004).
  • Page 100 Procedure Illustration 6) Remove the screws of water collecting cover and then remove the water collecting cover (2 screw) (see CJ_ D30_005). Water Collecting Cover CJ_D30_005 7) Remove the screws of the rear net and then remove the rear net (2 screws) (see CJ_D30_006).
  • Page 101 Procedure Illustration 8) Remove the screws of the right panel and then remove the right panel (8 screws) (see CJ_D30_007). Right Panel CJ_D30_007 Note: This section is for reference only. Actual unit appearance may vary. Outdoor Unit Disassembly 19  ...
  • Page 102 2. X130 Procedure Illustration 1) Turn off the air conditioner and the power breaker. 2) Remove the screw of the big handle and then remove the big handle (1 screw) (see CJ_X130_001). Big Handle CJ_X130_001 Top Cover 3) Remove the screws of the top cover and then remove the top cover (3 screws).
  • Page 103 Procedure Illustration 4) Remove the screws of water collecting cover and then remove the water collecting cover (2 screws) (see CJ_ X130_003). Water Collecting Cover CJ_X130_003 5) Remove the screws of the front panel and then remove the front panel (6 screws(onoff models) or 8 screws(inverter models) (see CJ_ X130_004).
  • Page 104 Procedure Illustration 6) Remove the screws of the right panel and then remove the right panel (5 screws) (see CJ_X130_005). Right Panel CJ_X130_005 Note: This section is for reference only. Actual unit appearance may vary. Outdoor Unit Disassembly 22  ...
  • Page 105 3. X230/X330 Procedure Illustration 1) Turn off the air conditioner and the power breaker. 2) Remove the screw of the big handle and then remove the big handle (1 screws) (see CJ_X230_001). Big Handle CJ_X230_001 Top Cover 3) Remove the screws of the top cover and then remove the top cover (4 screws).
  • Page 106 Procedure Illustration 4) Remove the screws of water collecting cover and then remove the water collecting cover (2 screws) (see CJ_ X230_003). Water Collecting Cover CJ_X230_003 5) Remove the screws of the front panel and then remove the front panel (7 screws(onoff models) or 9 screws(inverter models) (see CJ_ X230_004).
  • Page 107 Procedure Illustration 6) Remove the screws of the right panel and then remove the right panel (5 screws) (see CJ_X230_005). Right Panel CJ_X230_005 Note: This section is for reference only. Actual unit appearance may vary. Outdoor Unit Disassembly 25  ...
  • Page 108 4. X430 Procedure Illustration 1) Turn off the air conditioner and the power breaker. 2) Remove the screw of the big handle and then remove the big handle (1 screw) (see CJ_X430_001). Big Handle CJ_X430_001 Top Cover 3) Remove the screws of the top cover and then remove the top cover (3 screws).
  • Page 109 Procedure Illustration 4) Remove the screws of water collecting cover and then remove the water collecting cover (2 screws) (see CJ_ X430_003). Water Collecting Cover CJ_X430_003 5) Remove the screws of the front panel and then remove the front panel (7 screws(onoff models) or 9 screws(inverter models) (see CJ_ X430_004).
  • Page 110 Procedure Illustration 6) Remove the screws of the right panel and then remove the right panel (6 screws) (see CJ_X430_005). Right Panel CJ_X430_005 Note: This section is for reference only. Actual unit appearance may vary. Outdoor Unit Disassembly 28  ...

  • Page 111: Electrical Parts

    3.2 Electrical parts Antistatic gloves must be worn when you disassemble the electronic box. WARNING: Note: Remove the air outlet grille(refer to 3.1 Panel Plate) before disassembling electrical parts. 1. PCB board 1 Procedure Illustration 1) Remove the screws of the top cover. (2 screws) (see CJ_ODU_PCB_001- 1 ).
  • Page 112 2. PCB board 2 Procedure Illustration 1) Unfix the hooks and then open the electronic control box cover (4 hooks) (see CJ_ODU_PCB_002-1 ). 4-Way Valve 2) Disconnect the connector for fan CJ_ODU_PCB_002-1 motor from the electronic control board (see CJ_ODU_PCB_002-2 ). 3) Remove the connector for the Reactor compressor (see CJ_ODU_PCB_002-...
  • Page 113 3. PCB board 3 Procedure Illustration 1) Remove the screws and unfix the hooks, then open the electronic control box cover (5 screws and 2 hooks )(see CJ_ODU_PCB_003-1 ). CJ_ODU_PCB_003-1 2) Disconnect the connector for fan motor from the electronic control board (see CJ_ODU_PCB_003-2 ).
  • Page 114 4. PCB board 4 Procedure Illustration 1) Remove the screws of the top cover. (1 screws) (see CJ_ODU_PCB_004- 1 ). CJ_ODU_PCB_004-1 2) Unfix the hooks and then open the electronic control box cover (5 hooks) (see CJ_ODU_PCB_004-2 ). CJ_ODU_PCB_004-2 3) Disconnect the connector for fan motor from the IPM board (see CJ_ ODU_PCB_004-3 ).
  • Page 115 Procedure Illustration 5) Pull out the wire connected with the terminal. (see CJ_ODU_PCB_004-4 ). T3/T4 6) Pull out connectors of the condenser coil temp. sensor(T3),outdoor ambient temp. sensor(T4) and discharge temp. sensor(TP) (see CJ_ODU_PCB_004-4 ). 7) Disconnect the electronic expansion valve wire (see Fig CJ_ODU_PCB_004- 4 ).
  • Page 116 5. PCB board 5 Procedure Illustration 1) Unfix the hooks and then open the electronic control box cover (4 hooks) (see CJ_ODU_PCB_005-1 ). 2) Disconnect the connector for outdoor DC fan from the electronic control board (see CJ_ODU_ PCB_005-2 ). 3) Remove the connector for the compressor (see CJ_ODU_PCB_005- 2 ).
  • Page 117 6. PCB board 6 Procedure Illustration 1) Disconnect the connector for compressor and release the ground wire(1 screw). (see CJ_ODU_ PCB_006-1 ). CJ_ODU_PCB_006-1 2) Pull out the wires from electrical supporting plate and turn over the electronic control assembly. (see CJ_ODU_PCB_006-2 ).
  • Page 118 Procedure Illustration 4) Remove the fixing board (2 hooks) (see CJ_ODU_PCB_006-4 ). CJ_ODU_PCB_006-4 5) Disconnect the connectors from the electronic control board (see CJ_ODU_PCB_006-5 ). CJ_ODU_PCB_006-5 6) Then remove the electronic control board (4 hooks).(see CJ_ODU_ PCB_006-6 ). CJ_ODU_PCB_006-6 Note: This section is for reference only. Actual unit appearance may vary. Outdoor Unit Disassembly 36 ...
  • Page 119 7. PCB board 7 Procedure Illustration 1) Unfix the hooks and then open the electronic control box cover (4 hooks) (see CJ_ODU_PCB_007-1 ). CJ_ODU_PCB_007-1 2) Remove 4 screws on the electronic control board and then turn over the electronic control board (see CJ_ODU_PCB_007-2 ).
  • Page 120 Procedure Illustration 3) Pull out the connectors (see CJ_ ODU_PCB_007-3 ). 4) Remove the 9 screws and unfix the 3 hooks and then remove the electronic control board(see CJ_ ODU_PCB_007-3 ). CJ_ODU_PCB_007-3 5) Remove two screws and then remove the electronic control box subassembly on partition board assembly.
  • Page 121 Procedure Illustration 6) Remove two screws and two connectors and then remove the inverter control board (see CJ_ODU_ PCB_007-5 ). CJ_ODU_PCB_007-5 Note: This section is for reference only. Actual unit appearance may vary. Outdoor Unit Disassembly 39  ...
  • Page 122 8. PCB board 8 Procedure Illustration 1) Disconnect the connector for compressor and release the ground wire(1 screw). (see CJ_ODU_ PCB_0011-1 ). CJ_ODU_PCB_008-1 2) Pull out the wires from electrical supporting plate and turn over the electronic control assembly. (see CJ_ODU_PCB_008-2 ).
  • Page 123 Procedure Illustration 4) Remove the fixing board (2 hooks) (see CJ_ODU_PCB_008-4 ). CJ_ODU_PCB_008-4 5) Disconnect the connectors from the electronic control board (see CJ_ODU_PCB_008-5 ). CJ_ODU_PCB_008-5 6) Then remove the electronic control board (4 hooks).(see CJ_ODU_ PCB_008-6 ). CJ_ODU_PCB_008-6 Note: This section is for reference only. Actual unit appearance may vary. Outdoor Unit Disassembly 41 ...
  • Page 124 9. PCB board 9 Procedure Illustration 1) Unfix the hooks and then open the electronic control box cover (4 hooks) (see CJ_ODU_PCB_009-1 ). CJ_ODU_PCB_009-1 2) Remove 6 screws on the electronic control board and then turn over the electronic control board (see CJ_ODU_PCB_009-2 ).
  • Page 125 Procedure Illustration 3) Pull out the connectors (see CJ_ ODU_PCB_009-3 ). 4) Remove the 4 screws and then remove the electronic control board(see CJ_ODU_PCB_009-3 ). CJ_ODU_PCB_009-3 5) Pull out the connector, remove one screw and then remove the key board subassembly on terminal board.
  • Page 126 PCB board 10 Procedure Illustration 1) Disconnect the connector for compressor. (see CJ_ODU_PCB_010- 1 ). 2) Remove the screws of cover of electronic control box(5 screws). (see CJ_ODU_PCB_006-1 ). 3) Turn over the electronic control box subassembly CJ_ODU_PCB_010-1 4) Disconnect the connectors from the electronic control board (see CJ_ODU_PCB_010-2 ).
  • Page 127 11. PCB board 11 Procedure Illustration 1) Disconnect the connector for compressor and release the ground wire(1 screw). (see CJ_ODU_ PCB_011-1 ). CJ_ODU_PCB_011-1 2) Pull out the wires from electrical supporting plate and turn over the electronic control assembly. (see CJ_ODU_PCB_011-2 ).
  • Page 128 Procedure Illustration 3) Remove the electronic installing box subassembly (3 hooks) (see CJ_ODU_ PCB_011-3 ). CJ_ODU_PCB_011-3 4) Disconnect the connectors from the electronic control board (see CJ_ODU_PCB_011-4 ). CJ_ODU_PCB_011-4 Note: This section is for reference only. Actual unit appearance may vary. Outdoor Unit Disassembly 46 ...
  • Page 129 Procedure Illustration 5) Then remove the electronic control board (4 hooks).(see CJ_ODU_ PCB_011-5 ). CJ_ODU_PCB_011-5 Note: This section is for reference only. Actual unit appearance may vary. Outdoor Unit Disassembly 47  ...

  • Page 130: Fan Assembly

    3.3 Fan Assembly Note: Remove the panel plate (refer to 3.1 Panel Plate) before disassembling fan. Procedure Illustration 1) Remove the nut securing the fan with a spanner (see CJ_ODU_ FAN_001). 2) Remove the fan. CJ_ODU_FAN_001 Note: This section is for reference only. Actual unit appearance may vary. Outdoor Unit Disassembly 48 ...

  • Page 131: Fan Motor

    3.4 Fan Motor Note: Remove the panel plate and the connection of fan motor on PCB (refer to 3.1 Panel Plate and 3.2 Electrical parts) before disassembling fan motor. Procedure Illustration 3) Remove the fixing screws of the fan motor (4 screws) (see CJ_ODU_MOTOR_001).

  • Page 132: Sound Blanket

    Sound blanket Note: Remove the panel plate (refer to 3.1 Panel plate) before disassembling sound blanket. Procedure Illustration 1) Remove the sound blanket (side and top) (see CJ_ODU_BLANKET_001). Sound Blanket(top) Sound Blanket(side) CJ_ODU_BLANKET_001 Note: This section is for reference only. Actual unit appearance may vary. Outdoor Unit Disassembly 50 ...

  • Page 133: Four-Way Valve

    Four-way valve (for heat pump models) WARNING: Evacuate the system and confirm that there is no refrigerant left in the system before removing the four-way valve and the compressor. (For R32 & R290, you should evacuate the system with the vacuum pump; flush the system with nitrogen;...

  • Page 134: Compressor

    Compressor WARNING: Evacuate the system and confirm that there is no refrigerant left in the system before removing the four-way valve and the compressor. (For R32 & R290, you should evacuate the system with the vacuum pump; flush the system with nitrogen; then repeat the two steps before heating up the brazed parts. The operations above should be implemented by professionals.) Note: Remove the panel plate, connection of compressor on PCB (refer to 3.1 Panel plate and 3.2 Electrical parts) before disassembling sound blanket.
  • Page 135 Procedure Illustration 3) Remove the hex nuts and washers securing the compressor, located on the bottom plate (see CJ_ODU_COMP_003). CJ_ODU_COMP_003 Suction Pipe 4) Heat up the brazed parts and then remove the the discharge pipe and the suction pipe (see CJ_ODU_COMP_004). Discharge Pipe 5) Lift the compressor from the base pan assembly with pliers.

  • Page 136: Troubleshooting

    Troubleshooting Contents Safety Caution .......................3 General Troubleshooting ..................4 Complain Record Form ..................6 Information Inquiry ....................8 Error Diagnosis and Troubleshooting Without Error Code.......11 Remote maintenance...................11 Field maintenance ..................12 Quick Maintenance by Error Code..............17 Troubleshooting by Error Code................17 TS01 EEPROM Parameter Error Diagnosis and Solution TS02 Indoor and Outdoor Unit Communication Error Diagnosis and Solution TS03...
  • Page 137 Troubleshooting Contents IPM Malfunction or IGBT Over-strong Current Protection Diagnosis and Solution TS09 TS10 Over Voltage or Too Low Voltage Protection Diagnosis and Solution TS11 Top temperature Protection of Compressor or High Temperature Protection of IPM Module or High Pressure Protection Diagnosis and Solution Inverter Compressor Drive Error Diagnosis and Solution TS12 TS13...

  • Page 138: Safety Caution

    1. Safety Caution WARNING Be sure to turn off all power supplies or disconnect all wires to avoid electric shock. While checking indoor/outdoor PCB, please equip oneself with antistatic gloves or wrist strap to avoid damage to the board. WARNING Electricity remains in capacitors even when the power supply is off.

  • Page 139: General Troubleshooting

    2. General Troubleshooting Error Display (Indoor Unit) When the indoor unit encounters a recognized error on different models , 1. the running LED with flash in a corresponding series, the timer LED may turn on or begin flashing; 2. an error code will be displayed; 3.
  • Page 140 Top temperature protection of compressor or High temperature 3 times FLASH P C02 TS11-S-INV protection of IPM module or High pressure protection 5 times FLASH P C04 Inverter compressor drive error TS12-S 1 time FLASH P C08 Current overload protection TS08-S Communication error between outdoor main chip and compressor 6 times...

  • Page 141: Complain Record Form

    3. Complain Record Form Complain Record Form Request No.: Date: Installation Date: Service Date: Customer Information Name Telephone No. Home Address Email Product Information Indoor Unit Model Outdoor Unit Model Serial No. of indoor unit Serial No. of outdoor unit Working Mode □Fan only □Cooling...
  • Page 142 Parameter Checking information by Remote controller Displaying code Displaying code meaning Display value Display value meaning Room temperature Indoor coil temperature Outdoor coil temperature Ambient temperature Discharge temperature Targeted Frequency Actual Frequency Compressor current Outdoor AC voltage Indoor capacity test Reserve Outdoor fan speed EXV opening steps...

  • Page 143: Information Inquiry

    4. Information Inquiry&Setting • To enter engineer mode, in power-on or standby mode, and in non-locked state, press the key combination “ON/OFF + Air Speed” for 7s: • After entering the engineer mode, the remote control will display icons of “Auto, Cool, Dry, Heat”, and the Battery icon;...
  • Page 144 Error code of engineer mode Display Error Information E H00/EH0A Indoor unit EEPROM parameter error EL01 Indoor / outdoor unit communication error E H02 Zero-crossing signal detection error Over low voltage protection of indoor external fan E H30 E H31 Over voltage protection of indoor external fan E H03 The indoor fan speed is operating outside of the normal range...
  • Page 145 P C0A Condenser high temperature protection F H0C Humidity sensor is in open circuit or has short circuited P C06 Compressor discharge temperature protection P C08 Outdoor current protection P H09 Anti-cold air in heating mode P C0F PFC module malfunction High pressure protection PC30 PC31...

  • Page 146: Error Diagnosis And Troubleshooting Without Error Code

    5. Error Diagnosis and Troubleshooting Without Error Code WARNING Be sure to turn off unit before any maintenance to prevent damage or injury. Remote maintenance SUGGESTION: When troubles occur, please check the following points with customers before field maintenance. Problem Solution Unit will not start TS13 - TS14...

  • Page 147: Field Maintenance

    Field maintenance Problem Solution Unit will not start TS15 - TS16 Compressor will not start but fans run TS15 - TS16 Compressor and condenser (outdoor) fan will not start TS15 - TS16 Evaporator (indoor) fan will not start TS15 - TS16 Condenser (Outdoor) fan will not start TS15 - TS16 Unit runs, but shortly stops...

  • Page 148: Remote Maintenance

    1.Remote Maintenance Electrical Circuit Refrigerant Circuit Possible causes of trouble ☆ ☆ ☆ ☆ Unit will not start The power switch is on but fans will not start ☆ ☆ ☆ The temperature on the display board cannot be set ☆...
  • Page 149 1.Remote Maintenance Others Possible causes of trouble Unit will not start The power switch is on but fans will not start ☆ The temperature on the display board cannot be set Unit is on but the wind is not cold(hot) Unit runs, but shortly stops The unit starts up and stops frequently ☆...
  • Page 150 2.Field Maintenance Refrigerant Circuit Others Possible causes of trouble Unit will not start Compressor will not start but fans run ☆ Compressor and condenser (outdoor) fan will not start Evaporator (indoor) fan will not start Condenser (Outdoor) fan will not start Unit runs, but shortly stops ☆...
  • Page 151 2.Field Maintenance Electrical Circuit Possible causes of trouble Unit will not start ☆ ☆ ☆ ☆ ☆ ☆ Compressor will not start but fans run ☆ ☆ ☆ ☆ ☆ Compressor and condenser (outdoor) fan will not start ☆ ☆ ☆...

  • Page 152: Quick Maintenance By Error Code

    6. Quick Maintenance by Error Code If you do not have the time to test which specific parts are faulty, you can directly change the required parts according the error code. You can find the parts to replace by error code in the following table. Error Code Part requiring E H00/...

  • Page 153: Troubleshooting By Error Code

    7. Troubleshooting by Error Code TS01-IDU: Indoor EEPROM parameter error diagnosis and solution Description: Indoor PCB main chip does not receive feedback from EEPROM chip. Recommended parts to prepare: • Indoor PCB Troubleshooting and repair: Shut off the power supply and turn it on 2 minutes later.
  • Page 154 TS01-ODU: Outdoor EEPROM parameter error or communication error between outdoor main chip and compressor driven chip diagnosis and solution Description: Outdoor PCB main chip does not receive feedback from EEPROM chip or compressor driven chip. Recommended parts to prepare: • Outdoor PCB Troubleshooting and repair: Shut off the power supply and turn it on 2 minutes later.
  • Page 155 TS02-S-INV: Indoor and outdoor unit communication error diagnosis and solution Description: Indoor unit can not communicate with outdoor unit Recommended parts to prepare: • Indoor PCB • Outdoor PCB • Short-circuited component Troubleshooting and repair: Power off, then restart the unit after 2 minutes.
  • Page 156 Remarks: • Use a multimeter to test the DC voltage between 2 port(or Sor L2 port) and 3 port(or N or Sport) of outdoor unit. The red pin of multimeter connects with 2 port(or Sor L2 port) while the black pin is for 3 port(or N or Sport) . •...
  • Page 157 TS03: Zero crossing detection error diagnosis and solution Description: When PCB does not receive zero crossing signal feedback for 4 minutes or the zero crossing signal time interval is abnormal. Recommended parts to prepare: • Connection wires • Indoor main PCB Troubleshooting and repair: Check the connections and power supply.
  • Page 158 TS04-S-IDU: The Indoor fan speed is operating outside of normal range diagnosis and solution) Description: When indoor fan speed keeps too low or too high for a certain time, the LED displays the failure code and the AC turns off. Recommended parts to prepare: •...
  • Page 159 Index: 1. Indoor or Outdoor DC Fan Motor(control chip is in fan motor) Power on and when the unit is in standby, measure the voltage of pin1-pin3, pin4-pin3 in fan motor connector. If the value of the voltage is not in the range showing in below table, the PCB must has problems and need to be replaced. •...
  • Page 160 2. Indoor AC Motor 1) Power off and disconnect fan motor power cord from PCB. Measure the resistance value of each winding by using the multi-meter. The normal value show as follows . YKFG-13-4-38L Model YKFG-15-4-28-1 YKFG-20-4-10L YKFG-20-4-5-11 YKFG-13-4-38L-4 Brand Welling Welling Welling...
  • Page 161 TS04-ODU: The outdoor fan speed is operating outside of normal range diagnosis and solution) Description: When outdoor fan speed keeps too low or too high for a certain time, the LED displays the failure code and the AC turns off. Recommended parts to prepare: •...
  • Page 162 Index: 1. Outdoor DC Fan Motor (control chip is in outdoor PCB) Release the UVW connector. Measure the resistance of U-V, U-W, V-W. If the resistance is not equal to each other, the fan motor must has problems and need to be replaced. otherwise the PCB must has problems and need to be replaced. 2.
  • Page 163 TS05-IDU: Open circuit or short circuit of indoor temperature sensor(T1, T2) diagnosis and solution Description: If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED displays the failure code. Recommended parts to prepare: • Connection wires •...
  • Page 164 TS05-ODU: Open circuit or short circuit of outdoor temperature sensor(T3, T4, TP, T2B,TH) diagnosis and solution Description: If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED displays the failure code. Recommended parts to prepare: • Connection wires •...
  • Page 165 TS06-INV: Refrigerant Leakage Detection diagnosis and solution Description: Judging the abnormality of the refrigeration system according to the number of compressor stops and the changes in operating parameters caused by excessive exhaust temperature. Recommended parts to prepare: • Indoor PCB •...
  • Page 166 TS07: Indoor PCB / Display board communication error diagnosis and solution Description: Indoor PCB does not receive feedback from the display board. Recommended parts to prepare: • Communication wire • Indoor PCB • Display board Troubleshooting and repair: Power off, then restart the unit 2 minutes later Is it still displaying the error code? The unit functions normally...
  • Page 167 TS08-S: Current overload protection diagnosis and solution Description: An abnormal current rise is detected by checking the specified current detection circuit. Recommended parts to prepare: • Connection wires • Reactor • Outdoor fan • Outdoor PCB Troubleshooting and repair: Was the protection activated in standby? Restart the unit when the power supply Is the power voltage is normal?
  • Page 168 TS09-S: IPM malfunction or IGBT over-strong current protection diagnosis and solution Description: When the voltage signal the IPM sends to the compressor drive chip is abnormal, the LED displays the failure code and the AC turns off. Recommended parts to prepare: •...
  • Page 169 TS10-S: Over voltage or too low voltage protection diagnosis and solution Description: Abnormal increases or decreases in voltage are detected by checking the specified voltage detection circuit. Recommended parts to prepare: • Power supply wires • IPM module board • PCB •...
  • Page 170 TS11-S-INV: Top temperature protection of compressor or High temperature protection of IPM module or High pressure protection diagnosis and solution Description: For some models with overload protection, If the sampling voltage is not 5V, the LED will display the failure. If the temperature of IPM module is higher than a certain value, the LED displays the failure code.
  • Page 171 Check the fastening screws on the PCB and IPM radiator. Replace the outdoor Are they control PCB. fixed tightly? Tighten the screws and apply silicon grease. Note: For certain models, outdoor PCB could not be removed separately. In this case, the outdoor electric control box should be replaced as a whole.
  • Page 172 High pressure protection Are the high pressure switch and main control boar wired Is the high pressure protector broken? Method: Disconnect the plug. Measure the resistance of the high pressure protector, if the protector is normal the value is o, Does a problem still exist? Is the outdoor ambient temperature is higher than 50℃?
  • Page 173 TS12-S: Inverter compressor drive error diagnosis and solution Description: An abnormal inverter compressor drive is detected by a special detection circuit, including communication signal detection, voltage detection, compressor rotation speed signal detection and so on. Recommended parts to prepare: • Connection wires •...
  • Page 174 TS13-INV: Low pressure protection diagnosis and solution Description: Outdoor pressure switch cut off the system because low pressure is lower than 0.13 MPa, the LED displays the failure code. Recommended parts to prepare: • Connection wires • Outdoor PCB • Low pressure protector •...
  • Page 175 Low pressure protection Are the low pressure protector and main control board wired Reconnect the low pressure protector and main properly? control board Is the low pressure protector broken? Method: Disconnect the plug. Measure the resistance of the Replace low pressure protector low pressure protector.
  • Page 176 TS14: Indoor units mode conflict (match with multi outdoor unit) Description: The indoor units cannot work cooling mode and heating at same time. Heating mode has a priority. • Suppose Indoor unit A working in cooling mode or fan mode, and indoor unit B is set to heating mode, then A will change to off and B will work in heating mode.
  • Page 177 TS33: Communication error between outdoor main PCB and IPM board diagnosis and solution Description: The main PCB cannot detect the IPM board. Recommended parts to prepare: • Connection wires • IPM board • Outdoor main PCB • Electric control box Troubleshooting and repair: Is t h e r e a t l e a s t o n e LED in t h e I P M b o a r d l i g h t ?
  • Page 178 TS34: AP mode is actived but there is no WIFI kit installed Description: AP mode is actived but cannot detect WIFI kit . Recommended parts to prepare: • WIFI kit Troubleshooting and repair: Shut off the power supply and Is there WIFI kit? turn it on 2 minutes later.

  • Page 179: Check Procedures

    8. Check Procedures 1. Temperature Sensor Check WARNING Be sure to turn off all power supplies or disconnect all wires to avoid electric shock. Operate after compressor and coil have returned to normal temperature in case of injury. 1. Disconnect the temperature sensor from PCB (Refer to Chapter 5&6. Indoor&Outdoor Unit Disassembly). 2.
  • Page 180 Resistance Value ASM135D23UFZ ATQ420D1UMU ASN98D22UFZ ATF235D22UMT ATQ360D1UMU Blue-Red Blue-Black 1.75Ω 0.37Ω 0.75Ω 0.37Ω Ω 1.57 Red-Black Resistance Value ATM115D43UFZ2 ATF250D22UMT ATF310D43UMT KSK103D33UEZ3(YJ) ASM98D32UFZ Blue-Red Blue-Black 1.87Ω 0.75Ω 0.65Ω 2.13Ω 2.2Ω Red-Black Resistance Value ASN140D21UFZ ASK89D29UEZD KSN140D21UFZ KTM240D57UMT KSK103D33UEZ3 Blue-Red Blue-Black 1.28Ω...

  • Page 181: Ipm Continuity Check

    Note: The picture and the value are only for reference, actual condition and specific value may vary. 8.3 IPM Continuity Check WARNING Electricity remains in capacitors even when the power supply is off. Ensure the capacitors are fully discharged before troubleshooting. 1.
  • Page 182 Note: The picture and the value are only for reference, actual condition and specific value may vary.  Troubleshooting ...
  • Page 183 8.4 4-way Valve Check 1. Power on, use a digital tester to measure the voltage, when the unit operates in cooling, it is 0V. When the unit operates in heating, it is about 230VAC. If the value of the voltage is not in the range, the PCB must have problems and need to be replaced. 2 Turn off the power, use a digital tester to measure the resistance.
  • Page 184 8.5 EXV Check WARNING Electricity remains in capacitors even when the power supply is off. Ensure the capacitors are fully discharged before troubleshooting. 1. Disconnect the connector from outdoor PCB. 2. Measure the resistance value of each winding using a multi-meter. 3.
  • Page 185 Appendix Contents Temperature Sensor Resistance Value Table for T1, T2, T3, and T4 (°C – K) ..2 Temperature Sensor Resistance Value Table for TP (for some units)(°C --K) ..3 iii) Pressure On Service Port ..................4...
  • Page 186 i) Temperature Sensor Resistance Value Table for T1,T2,T3 and T4 (°C – K) °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm 115.266 12.6431 2.35774 0.62973 108.146 12.0561 2.27249 0.61148 101.517 11.5 2.19073 0.59386 96.3423 10.9731...
  • Page 187 ii) Temperature Sensor Resistance Value Table for TP(for some units) (°C --K) °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm...

  • Page 188: Pressure On Service Port

    iii) Pressure On Service Port Cooling chart(R410A): ODU(DB) °F(°C) 0(-17) 5(-15) (29.44) 95 (35) (-9.44) (7.22) (23.89) (40.56) (46.11) (48.89) IDU(DB/WB) 70/59 (21.11/15) 10.1 10.6 75/63 (23.89/17.22) 10.7 11.2 80/67 (26.67/19.44) 11.2 11.9 90/73 (32.22/22.78) 10.5 10.3 10.0 10.6 12.4 13.0 70/59 (21.11/15) 75/63 (23.89/17.22)
  • Page 189 Heating chart(R410A): ODU(DB/WB) 27/23 17/13 (-8.33/- 0/-2 57/53 47/43 37/33 -17/-18 °F(°C) (-2.78/-5) 10.56) (-17/-19) (13.89/11.67) (8.33/6.11) (2.78/0.56) (-27/-28) IDU(DB) 55(12.78) 30.3 28.5 25.3 22.8 20.8 18.5 16.5 65(18.33) 32.5 30.0 26.6 25.4 23.3 20.5 19.0 75(23.89) 33.8 31.5 27.8 26.3 24.9 21.5...
  • Page 190 Cooling chart(R22): ODU(DB) °F(°C) 0(-17) 5(-15) 95 (35) (-9.44) (7.22) (23.89) (29.44) (40.56) (46.11) (48.89) IDU(DB/WB) 70/59 (21.11/15) 75/63 (23.89/17.22) 80/67 (26.67/19.44) 90/73 (32.22/22.78) 70/59 (21.11/15) 75/63 (23.89/17.22) 80/67 (26.67/19.44) 90/73 (32.22/22.78) 70/59 (21.11/15) 0.40 0.41 0.46 0.50 0.51 0.49 0.51 0.54 0.63...
  • Page 191 Heating chart(R22): ODU(DB/WB) 27/23 17/13 (-8.33/- 0/-2 57/53 47/43 37/33 -17/-18 °F(°C) (-2.78/-5) 10.56) (-17/-19) (13.89/11.67) (8.33/6.11) (2.78/0.56) (-27/-28) IDU(DB) 55(12.78) 18.9 17.8 15.8 14.3 13.0 11.6 10.3 65(18.33) 20.3 18.8 16.6 15.9 14.6 12.8 11.9 75(23.89) 21.1 19.7 17.3 16.4 15.6 13.4...
  • Page 192 Cooling chart(R32): ODU(DB) °F(°C) 0(-17) 5(-15) (29.44) 95 (35) (-9.44) (7.22) (23.89) (40.56) (46.11) (48.89) IDU(DB/WB) 70/59 (21.11/15) 10.3 10.8 75/63 (23.89/17.22) 10.9 11.4 80/67 (26.67/19.44) 11.4 12.1 90/73 (32.22/22.78) 10.7 10.5 10.2 10.8 12.6 13.3 70/59 (21.11/15) 75/63 (23.89/17.22) 80/67 (26.67/19.44) 90/73 (32.22/22.78) 70/59 (21.11/15)
  • Page 193 Heating chart(R32): ODU(DB/WB) 27/23 17/13 (-8.33/- 0/-2 57/53 47/43 37/33 -17/-18 °F(°C) (-2.78/-5) 10.56) (-17/-19) (13.89/11.67) (8.33/6.11) (2.78/0.56) (-27/-28) IDU(DB) 55(12.78) 30.9 29.1 25.8 23.3 21.2 18.9 16.8 65(18.33) 33.2 30.6 27.1 25.9 23.8 20.9 19.4 75(23.89) 34.5 32.1 28.4 26.8 25.4 21.9...
  • Page 194 System Pressure Table-R22 Pressure Temperature Pressure Temperature °C °F °C °F 14.5 -41.091 -41.964 1600 41.748 107.146 21.75 -32.077 -25.739 1650 16.5 239.25 43.029 109.452 -25.177 -13.319 1700 246.5 44.281 111.706 36.25 -19.508 -3.114 1750 17.5 253.75 45.506 113.911 43.5 -14.654 5.623 1800...
  • Page 195 System Pressure Table-R410A Pressure Temperature Pressure Temperature °C °F °C °F 14.5 -51.623 -60.921 2350 23.5 340.75 38.817 101.871 21.75 -43.327 -45.989 2400 39.68 103.424 -36.992 -34.586 2450 24.5 355.25 40.531 104.956 36.25 -31.795 -25.231 2500 362.5 41.368 106.462 43.5 -27.351 -17.232 2550...
  • Page 196 System Pressure Table-R32 Pressure Temperature Pressure Temperature °C °F °C °F 14.5 -51.909 -61.436 1850 18.5 268.25 28.425 83.165 21.75 -43.635 -46.543 1900 275.5 29.447 85.005 -37.323 -35.181 1950 19.5 282.75 30.448 86.806 36.25 -32.15 -25.87 2000 31.431 88.576 43.5 -27.731 -17.916 2050...

This manual is also suitable for:

Bmx922 seriesBmy922 seriesBmy3020 seriesBmx1220Bmy1221Bmy1820 ... Show all

Table of Contents