COMFORT-AIRE Century VMH-SV Series Service Manual
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COMFORT-AIRE Century VMH-SV Series Service Manual

Single-multi zone mini-split
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Service Manual
VMH-SV Series
Single-Multi Zone Mini-Splits
Model
VMH06, 09,12, 18, 24 SV Series
www.marsdelivers.com

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Summary of Contents for COMFORT-AIRE Century VMH-SV Series

  • Page 1 Service Manual VMH-SV Series Single-Multi Zone Mini-Splits Model VMH06, 09,12, 18, 24 SV Series www.marsdelivers.com...

  • Page 2: 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 3 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 4 Safety Precautions Contents Precautions ......................2 Information servicing(For flammable materials) ..........3...

  • Page 5: Safety 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 6: 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 7 • 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 8: Specifications 5

    • 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 9 • 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 10 Specifications Contents Model Reference ....................2 Pipe Length and Drop Height ................3 Electrical Wiring Diagrams ..................4...

  • Page 11: Model Reference

    1. Model Reference Refer to the following table to determine the specific indoor and outdoor unit model. Indoor Unit Model Outdoor Unit Model Capacity (Btu/h) Power Supply B-VMH06SV-1 A-VMH06SV-1 A-VMH09SV-1 B-VMH09SV-1 A-VMH09SV-1 A-VMH12SV-1 B-VMH12SV-1 A-VMH12SV-1 A-VMH18SV-1 208/230~, 60Hz, 1Phase B-VMH18SV-1 A-VMH18SV-1 A-VMH24SV-1 B-VMH24SV-1...

  • Page 12: 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 13: 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 B-VMH06SV-1 A-VMH06SV-1 B-VMH09SV-1 A-VMH09SV-1 16022000035853 A-VMH12SV-1 B-VMH12SV-1 16022000034669 A-VMH18SV-1 B-VMH18SV-1 16022000035849 B-VMH24SV-1 A-VMH24SV-1 16022000034529 B-VMH30SV-1 A-VMH30SV-1 B-VMH36SV-1 A-VMH36SV-1 Outdoor unit printed circuit board diagram...
  • Page 14 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 15 6k-36k INDOOR WIRING DIAGRAM 16022000034669 I NDOOR 5 (10) 5 (10) 5(3 or 2) PLASMA OR ION(12V) CN11 C N13 C N12 C N27 C N19 C N21 C N22 CN26 T ransformer or OR UVC Power board C N10 C N15 Pipe Temperature Sensor MAIN BOARD...
  • Page 16 6k-12k Outdoor unit wiring diagram: 16022000035853 WIRING DIAGRAM INDOOR UNIT T3 T4 TP 1 �� _ ..,..1 I 1 _ ..__ I CN17 CN15 CN21 CN60 CRANKCASE EARTH T. M .P Sensor 1 4-WAY HEATER HEATER I ______ _J ___ J CNlA...
  • Page 17 - - W IRI N G D I A GRAM - - - - - - - - - - - - - - - - - - - - - - - - - - - :�:� - : - · - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - · Outdoor unit wiring diagram: 16022000035849 CN16 CN19...
  • Page 18 24k-36k Outdoor unit wiring diagram: 16022000034529 1 ------- 1 OPTIONAL : IT3T4TP ;-0PT10N� I �OPTIONAL: I TF �� �;��RATURE ;;tJ I I PROTECTION OF COMPRESSOR EEV 1 RED : :YELLOW ._ _ YELLOW CN29 CN42 BLACK BLUE RED I CN20 OPTIONAL I HEAT1 MAIN BOARD...
  • Page 19 6k-12k Outdoor unit printed circuit board diagram: 17122000044714, 17122000048121,17122000046453...
  • Page 20 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 21 Outdoor unit printed circuit board diagram: 17122000041117, 17122000034170...
  • Page 22 Name Meaning Earth: connect to Ground Power Supply N_in: connect to N-line (208-230V AC input) 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 23 24k-36k Outdoor unit printed circuit board diagram: 17122000047742...
  • Page 24 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 25 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 26 Product Features Contents Display Functions s ....................2 Safety Features ......................3 Basic Functions .......................4 Abbreviation s....................4 Fan Mode ......................4 Cooling Mode ....................4 Heating Mode(Heat Pump Units) ..............5 Auto-mode ....................6 Drying Mode ....................7 Forced Operation Function ................7 Timer Function ....................7 Sleep Function ....................7 3.10 Auto-Restart Function ..................8 3.11 Active Clean function ..................8 3.12 Follow me(Optional) ..................8...

  • Page 27: Display Functions S

    1. Display Function Unit display functions Display Function ECO function (available on select units only) when Wireless Control feature is activated(some units) Temperature value Temperature Timer ON is set. Activation of , Fresh, Swing, Turbo, ECO, Breeze away, ECO (3s) intelligent or Silence Timer OFF is set.

  • Page 28: Safety Features

    2. Safety Features Compressor three-minute delay at restart Compressor functions are delayed for up to ten seconds upon the fi rst 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 29: 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 30: Heating Mode(Heat Pump Units)

    For AC fan motor units: level per 1 minute. • Hold: Keep the current frequency. • Resume: No limitation for frequency. 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 31 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 32: 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 33: 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) ( ( 4 4 6 6 °...

  • Page 34: Breeze Away Function(Optional)

    3.17 Breeze Away function (Optional) • This feature avoids direct airflow blowing on the body. • NOTE: This feature is available under cooling mode, fan-only mode and drying mode. 3.18 Wireless Control (Optional) • Wireless control allows you to control your air conditioner using your mobile phone and a Wireless connection.
  • Page 35 Maintenance Contents First Time Installation Check .................2 Refrigerant Recharge ....................4 Re-Installation .......................5 Indoor Unit ....................5 Outdoor Unit ....................7...

  • Page 36: 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 37 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 38: Refrigerant Recharge

    2. Refrigerant Recharge mA A Procedure: Close both 2- and 3-way valves. 3-way valves. Slightly connect the Handle Lo charge hose to the Operate the air conditioner in cooling mode to charge 3-way service port. the system with liquid refrigerant. Connect the charge hose to the valve at the bottom When the electronic scale displays the correct of the cylinder.

  • Page 39: Re-Installation

    3. Re-Installation Indoor Unit Collecting the refrigerant into the outdoor unit 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). Connect the charge hose with the push pin of Handle Lo to the 3-way valve’s gas service port.
  • Page 40 Air purging with vacuum pump 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.

  • Page 41: Outdoor Unit

    Outdoor Unit Evacuation for the whole system Procedure: Wait for 5 minutes then check whether the gauge Confirm that the 2- and 3-way valves are opened. needle moves after turning off the vacuum pump. If Connect the vacuum pump to the 3-way valve’s the gauge needle moves backward, check whether service port.
  • Page 42 Refrigerant charging mA A Procedure: Close both 2- and 3-way valves. Fully open the Handle Lo manifold valve, 2- and 3-way valves. Slightly connect the Handle Lo charge hose to the 3-way service port. Operate the air conditioner in cooling mode to charge the system with liquid refrigerant.
  • Page 43 Indoor Unit Disassembly Contents Dimension ......................2 Indoor Unit Disassembly ..................3 Front Panel ....................3 Electrical parts ....................7 Fan motor and fan ..................10 Step motor ....................12 Drain Hose ....................14 Evaporator ....................15...

  • Page 44: Dimension

    1. Dimension Capacity Body Code W(mm/inch) D(mm/inch) H(mm/inch) 9k~12k 795/31.3 225/8.86 295/11.61 18k~24k 965/38 239/9.41 319/12.56 24k~36k 1140/44.88 275/10.83 370/14.57  Indoor Unit Disassembly 2  Indoor Unit Disassembly 2...

  • Page 45: Indoor Unit Disassembly

    2. Indoor unit Disassembly Front Panel Procedure Illustration 1) Put your hands at the 2 sides of filter, pull the filter gently along the verticall direction, and then remove it.(see CJ_EP_001) CJ_EP_001 2) Open the horizontal louver and push the locker towards right to open it. (see CJ_EP_002) 3) Bend the horizontal louver lightly to loosen the hooks, then remove the...
  • Page 46 Procedure Illustration 4) Open the panel assembly, move the slider to fix the panel. (see CJ_EP_003) CJ_EP_003 5) Open two stop blocks of panel frame assembly. (see CJ_EP_004) 6) Remove 1 fixing screw in the panel frame. (see CJ_EP_004) CJ_EP_004 Note: This section is for reference only.
  • Page 47 Procedure Illustration 7) pull two sides of the bottom panel along the direction indicated in right image to remove it. (see CJ_EP_005) CJ_EP_005 8) Pull the mandril of panel to remove it.(see CJ_EP_006) 9) Remove the panel assembly.(see CJ_EP_006) (Caution: If you want to close the panel, you must bend the middle of mandril, otherwise it will break.
  • Page 48 Procedure Illustration 10) Remove 1 screw of the display board. (see CJ_EP_007) 11) Rotate the display board subassembly in the direction shown in the right picture. (see CJ_EP_007) 12) Pull the four clips to remove the display board.(see CJ_EP_007) CJ_EP_007 Note: This section is for reference only.

  • Page 49: Electrical Parts

    Electrical parts (Antistatic gloves must be worn.) Note: Open the front panel (refer to 2.1 Front panel) before disassembling electrical parts. Procedure Illustration 1) Pull the two lifts of the cover of electronic control box with thumbs and then open it. (see CJ_EP_008) 2) Raise the mandril to fix the cover.(see CJ_EP_008) CJ_EP_008...
  • Page 50 Procedure Illustration 4) Disconnect the wires. (see CJ_EP_010) CJ_EP_010 5) Remove one screw used for the ground connection. (see CJ_EP_011) 6) Pull two clips of the electronic control box along the direction shown in the right picture to remove the main control board.
  • Page 51 Procedure Illustration 7) Remove the other screw used for the ground connection.(see CJ_EP_012) 8) Collapse the mandril.(see CJ_EP_012) 9) Pull the cover of electronic control box along the direction indicated in right image to remove it.(see CJ_EP_012) Ground Screw CJ_EP_012 10) Remove one fixing screw then pull out the electronic control box subassembly.

  • Page 52: Fan Motor And Fan

    Fan motor and fan Note: Remove the front panel (refer to 2.1 Front panel). before disassembling fan motor and fan. Procedure Illustration 1) Open two stop blocks of chassis assembly(below). (see CJ_EP_014) 2) Remove chassis assembly(below) along the direction shown in the right picture (see CJ_EP_014) CJ_EP_014 3) Remove the two screws and remove the...
  • Page 53 Procedure Illustration 4) Remove the bearing sleeve (see CJ_ EP_016). CJ_EP_016 5) Remove the fixing screw (see CJ_EP_017). 6) Pull out the fan motor and fan assembly from the side. CJ_EP_017 Note: This section is for reference only. Actual unit appearance may vary. ...

  • Page 54: Step Motor

    Step motor Note: Remove the front panel and chassis assembly(below) (refer to 2.1 Front panel and 2.3 Fan motor and fan) before disassembling step motor. Procedure Illustration 1) Remove one screw to remove cover of louver motor.(see CJ_EP_018).(for some units) CJ_EP_018 2) Open the cover of louver motor, pull out intelligent eye subassembly.(see CJ_...
  • Page 55 Procedure Illustration 3) Remove the two screws, then remove the horizontal swing motor(see CJ_EP_020). Note: The horizontal swing motor is located in panel assembly. swing motor CJ_EP_020 4) Remove 2 screws, then remove the vertical swing motor swing motor (see CJ_EP_021).(for some units) 5) Remove 1 screw, then remove the ionizer generator (see CJ_EP_021).(for some units)

  • Page 56: Drain Hose

    Drain Hose Procedure Illustration 1) Rotate the fixed wire clockwise indicated in right image. (see CJ_EP_022) 2) Pull up the drain hose to remove it. (see CJ_EP_022) CJ_EP_022 Note: This section is for reference only. Actual unit appearance may vary. ...

  • Page 57: Evaporator

    Evaporator Note: Remove the front panel, electrical parts and fan (refer to 2.1 Front panel, 2.2 Electrical parts and 2.3 fan motor and fan) before disassembling evaporator. Procedure Illustration 1) Remove the 2 screws then remove the panel frame assembly.(see CJ_EP_023) CJ_EP_023 2) Disassemble the pipe clamp board.(see CJ_EP_024)
  • Page 58 Procedure Illustration 3) Remove the 1 screw on the evaporator located at the left fixed plate (see CJ_ EP_025). 4) Remove the 1 screw on the evaporator located on the right side. (see CJ_EP_025). CJ_EP_025 5) Bend the piping carefully, separate the chassis assembly(above) and the evaporator then take the evaporator out.
  • Page 59 Outdoor Unit Disassembly Contents Outdoor Unit Table ....................2 Dimension ......................3 Outdoor Unit Disassembly ..................24 Panel Plate ....................24 Electrical Parts .....................49 Fan Assembly ....................68 Fan Motor ....................69 Sound blanket .....................70 Four-way valve .....................71 Compressor ....................72...

  • Page 60: Outdoor Unit Table

    Outdoor Unit Table Outdoor Unit Model Panel Plate PCB Board X230 PCB Board 11 A-VMH06SV-1 X330 PCB Board 9 A-VMH09SV-1 X230 PCB Board 9 A-VMH12SV-1 X330 PCB Board 9 X230 PCB Board 9 A-VMH18SV-1 X430 PCB Board 6 X430 PCB Board 6 PCB Board 6 A-VMH24SV-1 PCB Board 12...
  • Page 61 Panel Plate 24k-36k  Outdoor Unit Disassembly 11  Outdoor Unit Disassembly 3...
  • Page 62 For US models: 24k-36k  Outdoor Unit Disassembly 12  Outdoor Unit Disassembly 4...
  • Page 63 X330 Panel Plate 9k-12k  Outdoor Unit Disassembly 18  Outdoor Unit Disassembly 5...
  • Page 64 For US models(Rounded grille): 9k-12k  Outdoor Unit Disassembly 19  Outdoor Unit Disassembly 6...

  • Page 65: Panel Plate

    X430 Panel Plate  Outdoor Unit Disassembly 21  Outdoor Unit Disassembly 7...
  • Page 66 For US models(Rounded grille):  Outdoor Unit Disassembly 22  Outdoor Unit Disassembly 8...
  • Page 67 5. D30 2 2 4 4 k k - - 3 3 6 6 k k 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).
  • Page 68 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 69 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 70 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 39 ...
  • Page 71 7. X230/X330 6 6 k k - - 1 1 2 2 k k 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).
  • Page 72 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 73 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 45 ...
  • Page 74 8. X430 1 1 8 8 k k 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...
  • Page 75 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 76 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 48 ...

  • Page 77: Electrical Parts

    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. PCB for ON-OFF Models 1. PCB board 1 Procedure Illustration 1) Remove the two screws fixed the electronic control board (see CJ_ ODU_PCB_001).
  • Page 78 Procedure Illustration 8) For models with subzero refrigeration control board, remove 3 screws of it showed in the figure. CJ_ODU_PCB_001-03 9) The subzero refrigeration control board is in the back of the medal sheet. CJ_ODU_PCB_001-04 Note: This section is for reference only. Actual unit appearance may vary. ...
  • Page 79 2. PCB board 2 Procedure Illustration Capacitor of compressor 1) Remove the fixing screws of the compressor capacitor, then pull it out (see CJ_ODU_PCB_002-1) 2) Remove 2 screws of the transformer and then remove it. (see CJ_ODU_ PCB_002-1) 3) Remove the fixing screws of the fan motor capacitor, then remove it.
  • Page 80 Procedure Illustration Fan Motor 6) Disconnect the wires connected to the compressor. (Red wire connects 4-Way Valve Compressor with PCB board, others connects with terminals) (see CJ_ODU_PCB_002-3) (For some models) 7) Disconnect the connectors for fan motor. (Blue wire, red wire, brown wire and black wire.
  • Page 81 PCB for Inverter Models 4. PCB board 4 Procedure Illustration 1) Remove the screws of the top cover. (2 screws) (see CJ_ODU_PCB_004- 1 ). CJ_ODU_PCB_004-1 2) Unfix the hooks and then open the electronic control box cover (4 hooks) (see CJ_ODU_PCB_004-2 ). 3) Disconnect the connector for fan motor from the electronic control board (see CJ_ODU_PCB_004-3 ).
  • Page 82 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 ). 4-Way Valve 2) Disconnect the connector for fan CJ_ODU_PCB_005-1 motor from the electronic control board (see CJ_ODU_PCB_005-2 ). 3) Remove the connector for the Reactor compressor (see CJ_ODU_PCB_005-...
  • Page 83 5. PCB board 6 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_006-1 ). CJ_ODU_PCB_006-1 2) Disconnect the connector for fan motor from the electronic control board (see CJ_ODU_PCB_006-2 ).
  • Page 84 6. PCB board 7 Procedure Illustration 1) Remove the screws of the top cover. (1 screws) (see CJ_ODU_PCB_007- 1 ). CJ_ODU_PCB_007-1 2) Unfix the hooks and then open the electronic control box cover (5 hooks) (see CJ_ODU_PCB_007-2 ). CJ_ODU_PCB_007-2 3) Disconnect the connector for fan motor from the IPM board (see CJ_ ODU_PCB_007-3 ).
  • Page 85 Procedure Illustration 5) Pull out the wire connected with the terminal. (see CJ_ODU_PCB_007-4 ). 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_007-4 ). 7) Disconnect the electronic expansion valve wire (see Fig CJ_ODU_PCB_007- 4 ).
  • Page 86 7. PCB board 8 Procedure Illustration 1) Unfix the hooks and then open the electronic control box cover (4 hooks) (see CJ_ODU_PCB_008-1 ). 2) Disconnect the connector for outdoor DC fan from the electronic control board (see CJ_ODU_ PCB_008-2 ). 3) Remove the connector for the compressor (see CJ_ODU_PCB_008- 2 ).
  • Page 87 9. PCB board 9 Procedure Illustration 1) Disconnect the connector for compressor and release the ground wire(1 screw). (see CJ_ODU_ PCB_009-1 ). 2) Pull out the wires from electrical supporting plate and turn over the CJ_ODU_PCB_009-1 electronic control assembly. (see CJ_ODU_PCB_009-2 ).
  • Page 88 Procedure Illustration 4) Remove the fixing board (2 hooks) (see CJ_ODU_PCB_009-4 ). CJ_ODU_PCB_009-4 5) Disconnect the connectors from the electronic control board (see CJ_ODU_PCB_009-5 ). CJ_ODU_PCB_009-5 6) Then remove the electronic control board (4 hooks).(see CJ_ODU_ PCB_009-6 ). CJ_ODU_PCB_009-6 Note: This section is for reference only. Actual unit appearance may vary. ...
  • Page 89 10. PCB board 10 Procedure Illustration 1) Unfix the hooks and then open the electronic control box cover (4 hooks) (see CJ_ODU_PCB_010-1 ). CJ_ODU_PCB_010-1 2) Remove 4 screws on the electronic control board and then turn over the electronic control board (see CJ_ODU_PCB_010-2 ).
  • Page 90 Procedure Illustration 3) Pull out the connectors (see CJ_ ODU_PCB_010-3 ). 4) Remove the 9 screws and unfix the 3 hooks and then remove the electronic control board(see CJ_ ODU_PCB_010-3 ). CJ_ODU_PCB_010-3 5) Remove two screws and then remove the electronic control box subassembly on partition board assembly.
  • Page 91 Procedure Illustration 6) Remove two screws and two connectors and then remove the inverter control board (see CJ_ODU_ PCB_010-5 ). CJ_ODU_PCB_010-5 Note: This section is for reference only. Actual unit appearance may vary.  Outdoor Unit Disassembly 63  Outdoor Unit Disassembly 33...
  • Page 92 11. PCB board 11 Procedure Illustration 1) Disconnect the connector for compressor and release the ground wire(1 screw). (see CJ_ODU_ PCB_0011-1 ). 2) Pull out the wires from electrical supporting plate and turn over the CJ_ODU_PCB_011-1 electronic control assembly. (see CJ_ODU_PCB_011-2 ).
  • Page 93 Procedure Illustration 4) Remove the fixing board (2 hooks) (see CJ_ODU_PCB_011-4 ). CJ_ODU_PCB_011-4 5) Disconnect the connectors from the electronic control board (see CJ_ODU_PCB_011-5 ). CJ_ODU_PCB_011-5 6) Then remove the electronic control board (4 hooks).(see CJ_ODU_ PCB_011-6 ). CJ_ODU_PCB_011-6 Note: This section is for reference only. Actual unit appearance may vary. ...
  • Page 94 12. PCB board 12 Procedure Illustration 1) Unfix the hooks and then open the electronic control box cover (4 hooks) (see CJ_ODU_PCB_012-1 ). CJ_ODU_PCB_012-1 2) Remove 6 screws on the electronic control board and then turn over the electronic control board (see CJ_ODU_PCB_012-2 ).
  • Page 95 Procedure Illustration 3) Pull out the connectors (see CJ_ ODU_PCB_012-3 ). 4) Remove the 4 screws and then remove the electronic control board(see CJ_ODU_PCB_012-3 ). CJ_ODU_PCB_012-3 Note: This section is for reference only. Actual unit appearance may vary.  Outdoor Unit Disassembly 67 ...
  • Page 96 PCB board 13 Procedure Illustration 1) Disconnect the connector for compressor. (see CJ_ODU_PCB_013- 1 ). 2) Remove the screws of cover of electronic control box(5 screws). (see CJ_ODU_PCB_009-1 ). 3) Turn over the electronic control box subassembly CJ_ODU_PCB_013-1 4) Disconnect the connectors from the electronic control board (see CJ_ODU_PCB_013-2 ).

  • Page 97: Fan Assembly

    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. D-cut CJ_ODU_FAN_001 Note: This section is for reference only. Actual unit appearance may vary. ...

  • Page 98: Fan Motor

    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). 4) Remove the fan motor.

  • Page 99: 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. ...

  • Page 100: 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 101: 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 102 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 103 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 Zero-crossing Signal Detection Error Diagnosis and Solution...
  • Page 104 Contents TS09 IPM Malfunction or IGBT Over-strong Current Protection Diagnosis and Solution 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 TS12 Inverter Compressor Drive Error Diagnosis and Solution TS13 Low Pressure Protection Diagnosis and Solution TS14 Indoor units mode conflic Diagnosis and Solution...

  • Page 105: 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 106 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. both 1 and 2. These error codes are described in the following tables: Running Timer...
  • Page 107 Top temperature protection of compressor or High temperature 3 times FLASH TS11-S-INV PC 02 protection of IPM module or High pressure protection 5 times FLASH Inverter compressor drive error TS12-S PC 04 1 time FLASH Current overload protection TS08-S PC 08 Communication error between outdoor main chip and compressor 6 times FLASH...

  • Page 108: 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 □Cooling □Heating...
  • Page 109 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 110: Information Inquiry

    4. Information Inquiry • 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 111 Error code Display Error Information EH 00/EH 0A Indoor unit EEPROM parameter error Indoor / outdoor unit communication error EL 01 Zero-crossing signal detection error EH 02 Over low voltage protection of indoor external fan EH 30 Over voltage protection of indoor external fan EH 31 The indoor fan speed is operating outside of the normal range EH 03...
  • Page 112 PC 06 Compressor discharge temperature protection Outdoor current protection PC 08 Anti-cold air in heating mode PH 09 PC 0F PFC module malfunction Outdoor ambient tempreture too low pc 0l Evaporator coil temperature over high protection PH 90 Evaporator coil temperature over low Protection PH 91 Frequency limit caused by voltage LC 05...

  • Page 113: 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 13-14...

  • Page 114: Field Maintenance

    Field maintenance Problem Solution Unit will not start 15-16 Compressor will not start but fans run 15-16 Compressor and condenser (outdoor) fan will not start 15-16 Evaporator (indoor) fan will not start 15-16 Condenser (Outdoor) fan will not start 15-16 Unit runs, but shortly stops 15-16 Compressor short-cycles due to overload...
  • Page 115 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 116 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 117 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 118 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 119: 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 EH 00/...
  • Page 120 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. Is it still displaying The unit is operating normally.
  • Page 121 TS01-ODU: Outdoor EEPROM parameter error or Compressor driven chip EEPROM parameter error 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 122 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 123 Remarks: • Use a multimeter to test the DC voltage between 2 port(or S or L2 port) and 3 port(or N or S port) of outdoor unit. The red pin of multimeter connects with 2 port(or S or L2 port) while the black pin is for 3 port(or N or S port) . •...
  • Page 124 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 125 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 126 Index: 1. 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 127 Troubleshooting...
  • Page 128 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 129 Index: 1. 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 130 3. DC Fan Motor(for some double fan models) Power on and when the unit is in standby, measure the voltage of CON1, pin1-pin2 and pin3-pin2 of CN1 in DC motor driver board. If the value of the voltage is not in the range showing in below tables, the outdoor main PCB must has problems and need to be replaced.
  • Page 131 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 132 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 133 Troubleshooting...
  • Page 134 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 135 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 Was the protection activated in standby? in standby?
  • Page 136 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 137 Index: 1. IPM Continuity Check WARNING Electricity remains in capacitors even when the power supply is off. Ensure the capacitors are fully discharged before troubleshooting. 1. Turn off outdoor unit and disconnect power supply. 2. Discharge electrolytic capacitors and ensure all energy-storage unit has been discharged. 3.
  • Page 138 4. Compressor check Disconnect the compressor and check the resistance between U-V, V-W and U-W, and all 3 values should be equal. If not, the compressor is faulty and should be replaced. Note: The picture and the value are only for reference, actual condition and specific value may vary. ...
  • Page 139 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 140 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 141 Check the fastening screws on the PCB and IPM radiator. Replace the outdoor Are they fixed tightly? control PCB. 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 142 High pressure protection High pressure protection Are the high pressure switch Are the high pressure switch Connect high pressure switch and Connect high pressure switch and and main control boar wired and main control boar wired mian control board mian control board correctly? correctly? Is the high pressure...
  • Page 143 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 144 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 145 Low pressure protection Low pressure protection Are the low pressure protector Are the low pressure protector and main control board wired and main control board wired Reconnect the low pressure protector and main Reconnect the low pressure protector and main properly? properly? control board...
  • Page 146 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 147 TS33: Communication error between outdoor main chip and compressor driven chip diagnosis and solution Description: The main chip cannot detect the compressor driven chip Recommended parts to prepare: • Outdoor main PCB • Electric control box Troubleshooting and repair: Shut off the power supply and Shut off the power supply and turn it on 2 minutes later.
  • Page 148 8. Check Procedures 8.1 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 149 Resistance Value ASM135D23UFZ ATQ420D1UMU ASN98D22UFZ ATF235D22UMT ATQ360D1UMU Blue-Red Blue-Black 1.75Ω 0.37Ω Ω 0.75Ω 0.37Ω 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 150 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 151 Note: The picture and the value are only for reference, actual condition and specific value may vary. Troubleshooting   Troubleshooting...
  • Page 152 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 153 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 154 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 155 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 156 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 157 iii) Pressure On Service Port Cooling chart(R410A): 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) 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 158 Heating chart(R410A): ODU(DB/WB) 57/53 47/43 37/33 27/23 17/13 (-8.33/- 0/-2 -17/-18 °F(°C) (13.89/11.67) (8.33/6.11) (2.78/0.56) (-2.78/-5) 10.56) (-17/-19) (-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 159 Cooling chart(R22): ODU(DB) °F(°C) 95 (35) 0(-17) 5(-15) (-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 160 Heating chart(R22): ODU(DB/WB) 57/53 47/43 37/33 27/23 17/13 (-8.33/- 0/-2 -17/-18 °F(°C) (13.89/11.67) (8.33/6.11) (2.78/0.56) (-2.78/-5) 10.56) (-17/-19) (-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 161 Cooling chart(R32): 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) 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 162 Heating chart(R32): ODU(DB/WB) 57/53 47/43 37/33 27/23 17/13 (-8.33/- 0/-2 -17/-18 °F(°C) (13.89/11.67) (8.33/6.11) (2.78/0.56) (-2.78/-5) 10.56) (-17/-19) (-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 163 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 164 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 165 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...
  • Page 167 1900 Wellworth Ave., Jackson, MI 49203 • Ph. 517-787-2100 • www.marsdelivers.com 8/2021...

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