innovair ICS0736C21 Service Manual
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innovair ICS0736C21 Service Manual

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SERVICE MANUAL

AIR CONDITIONER

IOS629C2V01
IOS736C2V01
IUS0736C21
ICS0629C21
ICS0736C21
i

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Summary of Contents for innovair ICS0736C21

  • Page 1: Service Manual

    SERVICE MANUAL IOS629C2V01 IOS736C2V01 IUS0736C21 ICS0629C21 ICS0736C21 AIR CONDITIONER...
  • Page 3 Contents CONTENTS Part 1 General Information ....................1 Part 2 Indoor Units ......................... 5 Part 3 Outdoor Units ......................32 Part 4 Installation ........................41 Part 5 Electrical Control System ..................64 Contents...

  • Page 5: Table Of Contents

    General Information Part 1 General Information 1. Model Lists ..................... 2 2. External Appearance ................3 2.1 Indoor Units ........................3 2.2 Outdoor Units........................3 3. Features ....................4 1.1 Definition ......................... 65 1.2 Main Protection....................... 65 1.3 Operation Modes and Functions ................... 66 General Information...

  • Page 6: Model Lists

    Cooling Only √ √ Ceiling & floor Cooling Only √ √ 1.2 Outdoor Units Universal Outdoor unit Model Compressor type Compressor Brand Matched indoor units IOS629C2V01 Rotary DC Inverter GMCC ICS0629C21 ICS0736C21 IOS736C2V01 Rotary DC Inverter MITSUBISHI IUS0736C21 General Information...

  • Page 7: External Appearance

    External Appearance 2. External Appearance 2.1 Indoor Units Four-way Cassette Ceiling & Floor 2.2 Outdoor Units Single fan outdoor unit General Information...

  • Page 8: Features

    Features Features 3.1 Universal outdoor unit design Indoor unit with the same capacity can match with the same outdoor unit. 3.2 High efficiency and energy saving. Thanks to the DC inverter technology and optimized piping system, the EER and COP of whole series can easily reach A-class.

  • Page 9: Part 2 Indoor Units

    Part 2 Indoor Units Four-way Cassette Type ............6 Ceiling & Floor Type ............20...
  • Page 10 Indoor Units Four-way Cassette Type 1. Features ......................7 2. Dimensions ....................11 3. Service Space ....................12 4. Wiring Diagrams ..................13 5. Capacity Tables ................... 14 6. Air Velocity and Temperature Distributions(Reference Data) ....15 7. Electric Characteristics ................16 8.

  • Page 11: Features

    Features 1. Features (1) Low operation noise —Streamline plate ensures quietness —Creates natural and comfortable environment (2) Efficient cooling——Equal, fast and wide range cooling (3) Excellent performance. The optimal evaporator & sufficient airflow volume guarantees the excellent capacity (4) The adoption of the most advanced 3- Dimensional Screw fan —Reduces the air resistance passing through —Smoothes the air flow —Makes air speed distribution to the heat exchange uniform...
  • Page 12 Features (8) Different color panels for choose: White、Gray、Blue、Black (9) Swing angle of louver Add one more swing motor, one motor driving two louvers. Controlling the interspace of each part, minimizing the angle loss. The swing angle of the first louver are 40~42 degrees and the second louver are 37~38 degrees. New evaporator and inner configuration designed can acquire high heat-exchanger effect.
  • Page 14 Features (15) Reserve spaces for air side-outlet, it is available to connect duct pipe hence air supplying from the four sides to nearby small room.. (16) The connecting pipe and drop height is higher. Max. pipe length up to 50m （refer to ①） , and Max. drop height up to 30m（refer to ②）.

  • Page 15: Dimensions

    Dimensions 2. Dimensions Unit: mm MODEL ICS0629C21 Ф15.9 Ф9.52 >260 ICS0736C21 Ф15.9 Ф9.52 >330 Four-way Cassette Type...

  • Page 16: Service Space

    Service Space 3. Service Space >1000mm >1000mm Four-way Cassette Type...

  • Page 17: Wiring Diagrams

    Wiring Diagrams 4. Wiring Diagrams ICS0629C21 ICS0736C21 Four-way Cassette Type...

  • Page 18: Capacity Tables

    2.41 2.54 2.66 8.03 7.74 7.59 7.01 32/23ºC DB/WB 6.83 6.73 6.68 6.52 Input 2.38 2.49 2.66 2.76 ICS0736C21 Cooling Outdoor conditions (DB) Indoor Conditions (kW) 21ºC 28ºC 35ºC 43ºC 11.33 10.78 10.23 9.79 21/15ºC DB/WB 8.38 8.30 8.18 8.22 Input 3.42...

  • Page 19: Air Velocity And Temperature Distributions(Reference Data)

    Air Velocity and Temperature Distributions (Reference Data) Reference Data 6. Air Velocity and Temperature Distributions ( Airflow velocity Temperature Four-way Cassette Type...

  • Page 20: Electric Characteristics

    Electric Characteristics 7. Electric Characteristics Indoor Unit Power Supply Model Voltage ICS0629C21 220-230 ICS0736C21 220-230 Note: MFA: Max. Fuse Amps. (A) 8. Sound Levels 1.4m Microphone Noise level dB(A) Model ICS0629C21 40.5 ICS0736C21 42.5 Four-way Cassette Type...

  • Page 21: Accessories

    Accessories 9. Accessories Name Shape Quantity Installation Fittings Installation paper board Soundproof / insulation sheath(on Tubing & Fittings some models) Out-let pipe sheath(on some models) Out-let pipe clasp(on some models) Drainpipe Fittings Drain joint(on some models) Seal ring Remote controller & Its Frame Remote controller holder Remote controller &...

  • Page 22: The Specification Of Power

    The Specification of Power 10. The Specification of Power Model ICS0629C21 ICS0736C21 Phase 1-phase 1-phase Frequency 220-230V, 60Hz 220-230V, 60Hz Voltage INDOOR UNIT POWER POWER WIRING 3×1.0 3×1.0 CIRCUIT BREAKER/ 15/10 15/10 FUSE(A) Phase 1-phase 1-phase Frequency 220-230V, 60H 220-230V, 60H...

  • Page 23: Field Wiring

    Field Wiring 11. Field Wiring ICS0629C21 ICS0736C21 Four-way Cassette Type...

  • Page 24: Ceiling & Floor Type

    Ceiling & Floor Type Ceiling & Floor Type 1. Features ....................21 2. Dimensions ..................22 3. Service Space ..................23 4. Wiring Diagrams .................. 24 5. Capacity Tables ................... 25 6. Air Velocity and Temperature Distributions(Reference Data) ..26 7.

  • Page 25: Features

    Features 1. Features 1.1. New design, more modern and elegant appearance. 1.2. Convenient installation --The ceiling type can be easily installed into a corner of the ceiling even if the ceiling is very narrow --It is especially useful when installation of an air conditioner in the center of the ceiling is impossible due to a structure such as one lighting.

  • Page 26: Dimensions

    Dimensions 2. Dimensions a. Wall mounting installation b. Ceiling installation Capacity (Btu/h) IUS0736C21 1280 1195 Ceiling & Floor Type...

  • Page 27: Service Space

    Service Space 3. Service Space Ceiling & Floor Type...

  • Page 28: Wiring Diagrams

    Wiring Diagrams 4. Wiring Diagrams IUS0736C21 Ceiling & Floor Type...

  • Page 29: Capacity Tables

    Capacity Tables 5. Capacity Tables 5.1 Cooling Capacity IUS0736C21 High speed Indoor conditions (DB) at 0Pa Indoor Conditions (kW) 21ºC 28ºC 35ºC 43ºC 10.82 10.29 9.77 9.35 21/15ºC DB/WB 8.00 7.92 7.81 7.85 Input 3.44 3.73 3.89 4.02 11.13 10.61 10.08 9.45 24/17ºC DB/WB...

  • Page 30: Air Velocity And Temperature Distributions(Reference Data)

    Air Velocity and Temperature Distributions(Reference Data) Air Velocity and Temperature Distributions(Reference Data) Discharge angle 60° (CEILING) Airflow velocity Condenser Evaporator Electronic Condenser temp. sensor expansion valve Evaporator temp. sensor High pressure switch Filter Filter Capillary Room temp. sensor Discharge temp. sensor Oil separator Ambient temp.
  • Page 31 Air Velocity and Temperature Distributions(Reference Data) Discharge angle 60°(FLOOR) Airflow velocity Temperature Ceiling & Floor Type...

  • Page 32: Electric Characteristics

    Electric Characteristics 7. Electric Characteristics Indoor Unit Power Supply Model Voltage IUS0736C21 220-230 Note: MFA: Max. Fuse Amps. (A) 8. Sound Levels Microphone 1.5m Air outlet side Microphone Ceiling Floor Noise level dB(A) Model IUS0736C21 Ceiling & Floor Type...

  • Page 33: Accessories

    Accessories 9. Accessories Name Shape Quantity 1.Hook Installation fittings 2.Hanging arm 3. Remote controller Remote controller & Its 4. Remote controller holder holder 5. Mounting screw (ST2.9×10-C-H) 6. Alkaline dry batteries (AM4) 7. Owner's manual Others 8. Installation manual 9. Remote controller manual Ceiling &...

  • Page 34: The Specification Of Power

    The Specification of Power 10. The Specification of Power Model IUS0736C21 Phase 1-phase Frequency 220-230V, 60Hz Voltage INDOOR UNIT POWER POWER WIRING 3×1.0 CIRCUIT BREAKER/ 15/10 FUSE(A) Phase 1-phase Frequency 220-230V, 60H Voltage OUTDOOR UNIT POWER POWER WIRING 3X4.0 CIRCUIT BREAKER/ 4030 FUSE(A) Indoor/Outdoor Connecting Wiring...

  • Page 35: Field Wiring

    Field Wiring 11. Field Wiring IUS0736C21 Ceiling & Floor Type...

  • Page 36: Part 3 Outdoor Units

    Outdoor Unit Part 3 Outdoor Units 1. Dimensions ..................33 2. Service Space ..................34 3. Piping Diagrams .................. 35 4. Wiring Diagrams .................. 36 5. Electric Characteristics ..............38 6. Operation Limits .................. 39 7. Sound Levels ..................40 Outdoor Unit...

  • Page 37: Dimensions

    Dimensions Dimensions Unit: mm MODEL IOS629C2V01 IOS736C2V01 Outdoor Units...

  • Page 38: Service Space

    Dimensions Service Space (Wall or obstacle) More than 30cm Air inlet More than 60cm More than 30cm Maintain channel Air inlet More than 60cm Air outlet More than 200cm Outdoor Unit...

  • Page 39: Piping Diagrams

    Piping Diagrams Piping Diagrams IOS629C2V01 INDOOR OUTDOOR Electronic CAPILIARY TUBE expansion valve LIQUID SIDE T3 Condenser temp. sensor HEAT EXCHANGE HEAT (EVAPORATOR) EXCHANGE T1 Room temp. T4 Ambient T2 Evaporator (CONDENSER) sensor temp. sensor temp. sensor middle T2B Evaporator temp. sensor outlet T5 Discharge Accumulator...

  • Page 40: Wiring Diagrams

    Wiring Diagrams Wiring Diagrams IOS629C2V01 Outdoor Unit...
  • Page 41 Wiring Diagrams IOS736C2V01 Outdoor Units...

  • Page 42: Electric Characteristics

    Wiring Diagrams Electric Characteristics Outdoor Unit Power Supply Model Voltage Min. Max. IOS629C2V01 220-230 IOS736C2V01 220-230 Note: MFA: Max. Fuse Amps. (A) Outdoor Unit...

  • Page 43: Operation Limits

    Operation Limits Operation Limits Temperature Cooling operation Drying operation Mode Room temperature 17℃～32℃ 17℃～32℃ 0℃～50℃ （-15℃～50℃：For Outdoor temperature 0℃～50℃ the models with low temperature cooling system） CAUTION: 1. If the air conditioner is used beyond the above conditions, certain safety protection features may come into operation and cause the unit to operate abnormally.

  • Page 44: Sound Levels

    Sound Levels Sound Levels Outdoor Unit Microphone 1.0m Note: H= 0.5 × height of outdoor unit Model Noise level dB(A) IOS629C2V01 IOS736C2V01 Outdoor Unit...

  • Page 45: Part 4 Installation

    Sound Levels Part 4 Installation 1. Installation Procedure ..........42 2. Location selection ............ 43 3. Indoor unit installation ..........44 4. Outdoor unit installation (Side Discharge Unit) ..51 5. Refrigerant pipe installation ........53 6. Drainage pipe installation ........55 7.

  • Page 46: Installation Procedure

    Installation Procedure 1. Installation Procedure Indoor unit installation Outdoor unit installation location selection location selection Indoor unit installation Outdoor unit installation Refrigerant pipe Refrigerant pipe installation and insulation installation and insulation Drainage pipe installation Drainage pipe installation and insulation and insulation Vacuum drying and leakage checking Additional refrigerant charge Insulation the joint part of refrigerant pipe...

  • Page 47: Location Selection

    Location selection 2. Location selection 2.1 Indoor unit location selection  The place shall easily support the indoor unit’s weight.  The place can ensure the indoor unit installation and inspection.  The place can ensure the indoor unit horizontally installed. ...

  • Page 48: Indoor Unit Installation

    Indoor unit installation 3. Indoor unit installation 3.1 Big cassette indoor unit installation 3.1.1 Service space for indoor unit Model Remark >260 R410A Cooling >330 R410A Cooling 3.1.2 Bolt pitch 3.1.3 Install the pendant bolt Select the position of installation hooks according to the hook holes positions showed in upper picture. Installation...
  • Page 49 Indoor unit installation Drill four holes of Ø12mm, 45~50mm deep at the selected positions on the ceiling. Then embed the expansible hooks (fittings). 3.1.4 Install the main body Make the 4 suspender through the 4 hanger of the main body to suspend it. Adjust the hexangular nuts on the four installation hooks evenly, to ensure the balance of the body.
  • Page 50 Indoor unit installation 3.1.5 Install the panel Remove the grille Remove the 4 corner covers. Hang the panel to the hooks on the mainbody. Installation...
  • Page 51 Indoor unit installation Tighten the screws under the panel hooks till the panel closely stick on the ceiling to avoid condensate water. Hang the air-in grill to the panel, then connect the lead terminator of the swing motor and that of the control box with corresponding terminators on the body respectively.
  • Page 52 Indoor unit installation 3.2 Ceiling & floor indoor unit installation 3.2.1 Service space for indoor unit 3.2.2 Bolt pitch ① Ceiling installation Capacity (Btu/h) IUS0736C21 1195 ② Floor standing installation 3.2.3 Install the pendant bolt Installation...
  • Page 53 Indoor unit installation ① Ceiling installation Select the position of installation hooks according to the hook holes positions showed in upper picture. Drill four holes of Ø12mm, 45~50mm deep at the selected positions on the ceiling. Then embed the expansible hooks (fittings). ②...
  • Page 54 Indoor unit installation ② Floor standing installation Hang the indoor unit on the hook. (The bottom of body can touch with floor or suspended, but the body must install vertically.) Installation...

  • Page 55: Outdoor Unit Installation (Side Discharge Unit)

    Outdoor unit installation (Side Discharge Unit) 4. Outdoor unit installation (Side Discharge Unit) 4.1 Service space for outdoor unit 4.2 Bolt pitch Model 4.3 Install the Unit Since the gravity center of the unit is not at its physical center, so please be careful when lifting it with a sling. Never hold the inlet of the outdoor unit to prevent it from deforming.
  • Page 56 Outdoor unit installation (Side Discharge Unit) Fasten the feet of this unit with bolts firmly to prevent it from collapsing in case of earthquake or strong wind. Installation...

  • Page 57: Refrigerant Pipe Installation

    Refrigerant pipe installation 5. Refrigerant pipe installation 5.1 Maximum pipe length and height drop Considering the allowable pipe length and height drop to decide the installation position. Make sure the distance and height drop between indoor and outdoor unit not exceeded the date in the following table. Model Max.
  • Page 58 Refrigerant pipe installation 5.2.12 Locate the pipe and fix it by supporter For horizontal refrigerant pipe, the distance between supporters should not be exceed 1m.  For vertical refrigerant pipe, the distance between supporters should not be exceed 1.5m.  5.2.13 Connect the pipe to indoor unit and outdoor unit by using two spanners.

  • Page 59: Drainage Pipe Installation

    Drainage pipe installation 6. Drainage pipe installation Install the drainage pipe as shown below and take measures against condensation. Improperly installation could lead to leakage and eventually wet furniture and belongings. 6.1 Installation principle Ensure at least 1/100 slope of the drainage pipe ...
  • Page 60 Drainage pipe installation 6.2.3 Individual design of drainage pipe system The drainage pipe of air conditioner shall be installed separately with other sewage pipe, rainwater pipe  and drainage pipe in building. The drainage pipe of the indoor unit with water pump should be apart from the one without water pump. ...
  • Page 61 Drainage pipe installation Indoor unit More than 50mm Plug More than 25mm Water storage pipe 6.2.7 Lifting pipe setting of indoor unit with water pump The length of lifting pipe should not exceed the pump head of indoor unit water pump. ...
  • Page 62 Drainage pipe installation 6.3 Drainage test 6.3.1 Water leakage test After finishing the construction of drainage pipe system, fill the pipe with water and keep it for 24 hours to check whether there is leakage at joint section. 6.3.2 Water discharge test Natural drainage mode(the indoor unit with outdoor drainage pump) Infuse above 600ml water through water test hole slowly into the water collector, observe whether the water can discharge through the transparent hard pipe at drainage outlet.

  • Page 63: Vacuum Drying And Leakage Checking

    Vacuum Drying and Leakage Checking 7. Vacuum Drying and Leakage Checking 7.1 Purpose of vacuum drying Eliminating moisture in system to prevent the phenomena of ice-blockage and copper oxidation.  Ice-blockage shall cause abnormal operation of system, while copper oxide shall damage compressor. Eliminating the non-condensable gas (air) in system to prevent the components oxidizing, pressure ...

  • Page 64: Additional Refrigerant Charge

    Additional refrigerant charge 8. Additional refrigerant charge After the vacuum drying process is carried out, the additional refrigerant charge process need to be  performed. The outdoor unit is factory charged with refrigerant. The additional refrigerant charge volume is decided ...

  • Page 65: Engineering Of Insulation

    Engineering of insulation 9. Engineering of insulation 9.1 Insulation of refrigerant pipe 9.1.1 Operational procedure of refrigerant pipe insulation Cut the suitable pipe → insulation (except joint section) → flare the pipe → piping layout and connection→ vacuum drying → insulate the joint parts 9.1.2 Purpose of refrigerant pipe insulation During operation, temperature of gas pipe and liquid pipe shall be over-heating or over-cooling ...

  • Page 66: Engineering Of Electrical Wiring

    Engineering of electrical wiring 9.2.3 Insulation material selection for drainage pipe The insulation material should be flame retardant material, the flame retardancy of the material should  be selected according to the local law. Thickness of insulation layer is usually above 10mm. ...

  • Page 67: Test Operation

    Test operation 11. Test operation 11.1 The test operation must be carried out after the entire installation has been completed. 11.2 Please confirm the following points before the test operation. The indoor unit and outdoor unit are installed properly.  Tubing and wiring are correctly completed.

  • Page 68: Part 5 Electrical Control System

    Electrical Control System Part 5 Electrical Control System 1. Electrical Control Function ......... 65 2. Troubleshooting ........... 71 3. Controller .............. 91 Electrical Control System...

  • Page 69: Definition

    Electrical Control Function 1. Electrical Control Function 1.1 Definition T1: Indoor room temperature T2: Coil temperature of indoor heat exchanger middle. T2B: Coil temperature of indoor heat exchanger outlet. T3: Coil temperature of condenser T4: Outdoor ambient temperature T5: Compressor discharge temperature 1.2 Main Protection 1.2.1 Time delay at restart for compressor.

  • Page 70: Operation Modes And Functions

    Electrical Control Function 1.3 Operation Modes and Functions 1.3.1 Fan mode ( 1) Outdoor fan and compressor stop. (2) Temperature setting function is disabled, and no setting temperature is displayed. (3) Indoor fan can be set to high/(med)/low/auto. (4) The louver operates same as in cooling mode. (5) Auto fan: High Medium...
  • Page 71 Electrical Control Function When T4 <15 ℃ and T3 < 30 ℃, the unit will enter into low ambient cooling mode. The outdoor fan will choose speed according to T3. When T3≥38 ℃ or when T4≥20 ℃, the outdoor fan will choose the speed according to T4 again. 1.3.2.3 Indoor fan running rules In cooling mode, indoor fan runs all the time and the speed can be selected as high, (medium), low and auto.
  • Page 72 Electrical Control Function 1.3.5.2 Timer on. The machine will turn on automatically when reaching the setting time. 1.3.5.3 Timer off. The machine will turn off automatically when reaching the setting time. 1.3.5.4 Timer on/off. The machine will turn on automatically when reaching the setting “on” time, and then turn off automatically when reaching the setting “off”...
  • Page 73 Electrical Control Function Press the switch N times it will display the content corresponding to No. N. After getting into the check function, it will display No. N with 1.5s, meanwhile the low bit decimal of digit display flashing, indicated to get into the check function display.
  • Page 74 Electrical Control Function caused by Tp. Frequency limit Bit1 caused by current Frequency limit Bit0 caused by voltage DC fan motor speed The display value is between 13~120 degree. If the temp. is lower than 13 degree, the digital display tube will show “13”.If the temp.
  • Page 75 Troubleshooting 2. Troubleshooting 2.1 Display board 2.1.1 Icon explanation on indoor display board (Big cassette). 2.1.2 Icon explanation on indoor display board (Ceiling & floor) Electrical Control System...
  • Page 76 Troubleshooting 2.2 Indoor unit malfunction Running Timer Defrosting Alarm Display(nixie Malfunction lamp lamp lamp lamp tube) Communication malfunction between indoor ☆ and outdoor units. Open or short circuit of T1 temperature ☆ sensor Open or short circuit of T2 temperature ☆...
  • Page 77 Troubleshooting 2.3 Outdoor unit malfunction Display Malfunction or Protection Outdoor EEPROM malfunction Communication malfunction between indoor and outdoor units Communication malfunction between IPM board and outdoor main board Open or short circuit of outdoor temperature sensor Voltage protection of compressor Top temperature protection of compressor High pressure protection(Only for 36K~52K) Low pressure protection(Only for 36K,~52K)
  • Page 78 2.4 Solving steps for typical malfunction 2.4.1 For the indoor unit 2.4.1.1 Open or short circuit of temperature sensor Check the connections Check the connections between temperature between temperature Correct the connections. Correct the connections. sensor and PCB. Are the sensor and PCB.
  • Page 79 Troubleshooting 2.4.1.4. Water-level alarm malfunction Power off, then restart the unit 2 minutes Power off, then restart the unit 2 minutes later. Is it still displaying the error code? later. Is it still displaying the error code? If the water-level switch If the water-level switch Insert the water-level switch well Insert the water-level switch well...
  • Page 80 2.4.2.2. E2 malfunction E2 display E2 display Communication malfunction between indoor Communication malfunction between indoor and outdoor units and outdoor units Power off, then restart the unit 2 Power off, then restart the unit 2 minutes later minutes later Check whether there’s any Check whether there’s any interference.
  • Page 81 Troubleshooting 2.4.2.3. E3 malfunction E3 display Communication malfunction between IPM board and outdoor main board Is there at least one LED in the IPM board light? Check the signal wire between the IPM board and the main board, is it connected good? Reconnect and retry.
  • Page 82 2.4.2.4. E4 malfunction E4 display E4 display Judge 1: Outdoor condenser temp. sensor (T3) is malfunction Judge 1: Outdoor condenser temp. sensor (T3) is malfunction Check whether the wiring of the Check whether the wiring of the condenser temp. sensor(T3) is Connect the wiring well condenser temp.
  • Page 83 Troubleshooting 2.4.2.5. E5 malfunction(For single phase units) E5 display E5 display Voltage protection Voltage protection Check whether the power Restart the unit when the power Check whether the power Restart the unit when the power voltage is normal. supply gets normal voltage is normal.
  • Page 84 2.4.2.6. P0 malfunction P0 display P0 display Top temperature protection of Top temperature protection of compressor compressor Check the air flow system Clear up the air inlet and outlet or the heat Check the air flow system Clear up the air inlet and outlet or the heat of indoor and outdoor units exchanger of indoor and outdoor units.
  • Page 85 Troubleshooting 2.4.2.7. P1 malfunction (Only for 36K) P1 display P1 display High pressure protection High pressure protection Whether the wiring Whether the wiring between the high pressure between the high pressure switch and main control switch and main control Connect it well Connect it well board is connected well or board is connected well or...
  • Page 86 2.4.2.8. P2 malfunction (Only for 36K) P2 display P2 display Low pressure protection Low pressure protection Whether the wiring Whether the wiring between the low pressure between the low pressure protector and main control protector and main control Connect it well Connect it well board is connected well or board is connected well or...
  • Page 87 Troubleshooting 2.4.2.9. P3 malfunction P3 display P3 display Current protection of compressor Current protection of compressor The protection occurred in The protection occurred in standby standby Check whether the power Restart the unit when the power Check whether the power Restart the unit when the power voltage is normal.
  • Page 88 2.4.2.10. P4 malfunction When compressor discharge temperature is higher than 115°C, the unit will stop, and unit runs again when compressor discharge temperature is lower than 90°C. P4 display P4 display Temperature protection of Temperature protection of compressor discharge compressor discharge Check whether the Check whether the Check whether the...
  • Page 89 Troubleshooting 2.4.2.11. P5 malfunction When condenser high temp. is more than 65°C, the unit will stop, and unit runs again when outdoor pipe temp. less than 52°C. P5 display P5 display Check the connection Check the connection between temperature Correct the connection between temperature Correct the connection High temperature protection of...
  • Page 90 2.4.2.12. P6 malfunction At first test the resistance between every two ports of U, V, W of IPM and P, N. If any result of them is 0 or close to 0, the IPM is defective. Otherwise, please follow the procedure below: P6 display P6 display IPM module protection...
  • Page 91 Troubleshooting 2.4.2.13. P7 malfunction P7 display P7 display High temperature protection of High temperature protection of evaporator evaporator Check the connection Check the connection Whether compressor between T2 and PCB. Whether compressor between T2 and PCB. Correct the connection Correct the connection operates? operates? Check whether T2 and T2B...
  • Page 92 Appendix 1 Temperature Sensor Resistance Value Table (℃--K) K Ohm K Ohm K Ohm K Ohm ℃ ℃ ℃ ℃ 115.266 12.6431 2.35774 0.62973 108.146 12.0561 2.27249 0.61148 101.517 11.5000 2.19073 0.59386 96.3423 10.9731 2.11241 0.57683 89.5865 10.4736 2.03732 0.56038 84.2190 10.000 1.96532...
  • Page 93 Troubleshooting Appendix 2 Unit: ℃---K Discharge temp. sensor table 542.7 68.66 13.59 3.702 511.9 65.62 13.11 3.595 62.73 12.65 3.492 455.9 59.98 12.21 3.392 430.5 57.37 11.79 3.296 406.7 54.89 11.38 3.203 384.3 52.53 10.99 3.113 363.3 50.28 10.61 3.025 343.6 48.14 10.25...
  • Page 94 Appendix 3 Normal voltage of P and N 208-240V(1-phase,3-phase) 380-420V(3-phase) In standby 310VDC around 530VDC around In operation With passive PFC With partial active With fully active module PFC module PFC module >200VDC >310VDC >370VDC >450VDC Electrical Control System...

  • Page 95: Wireless Remote Controller

    Controller 3. Controller 3.1Wireless Remote Controller 3.1.1RG51Q1/BGE General Function for wireless remote controller: Model RG51Q1/BGE Rated voltage 3.0V(2pieces of LR03 7＃ batteries) Min voltage for sending signal of CPU 2.4V Effective receiving distance 8m~11m Operation condition -5~60℃ Electrical Control System...
  • Page 96 Buttons and functions 1. Adjust : Decrease the set temp. Keeping pressing will decrease the temp with 1℃ per 0.5s. 2. Adjust : Increase the set temp. Keeping pressing will increase the temp with 1℃ per 0.5s. 3. MODE: Once pressing, running mode will be selected in the following sequence: AUTO COOL HEAT...
  • Page 97 Controller 3.1.2 RG51C/E Remote Controller Specifications Model RG51C/E Rated Voltage 3.0V Lowest Voltage of CPU Emitting Signal 2.0V Reaching Distance 8m (when using 3.0 voltage, it can get 11m) Environment Temperature Range -5℃～60℃ Introduction of Function Buttons on the Remote Controller SET TEM PERATURE( C) AU TO HIGH...
  • Page 98 controls into faceplate setting state and the LCD shows F2.Press the TEMPUP( ) to control the faceplate up and press the TEMP DOWN( ) to control the faceplate down. Press any button to exit the faceplate setting state, then the LCD back to the normal display. 7.
  • Page 99 Controller Introduction of Function Buttons on the Remote Controller 1. Adjust : Decrease the set temp. Keeping pressing will decrease the temp with 1℃ per 0.5s. 2. Adjust : Increase the set temp. Keeping pressing will increase the temp with 1℃ per 0.5s. 3.
  • Page 100 11.SLEEP: Press this button to go into the Energy-Saving operation mode. Press it again to cancel. This function is only can be used on COOL, HEAT and AUTO mode and maintain the most comfortable temperature for you. 12. TIME OFF: For time OFF setting. Once pressing this button, the time will increase by 0.5 hour. When the set time exceeds 10 hours, pressing the button will increase the time by 1 hour.
  • Page 101 Controller AUTO COOL HEAT Remark: For the cooling only model, the heating mode is skipped. Timer on button: Press this button, timer on function is active. Then every press, the time increase 0.5h, after 10h, 1h increasement after each press. If cancel this Function, just set it to "0.0" Timer off button: Press this button, timer off function is active.
  • Page 102 Timer: When adjust setting on time or only on time is set, the “ON” is lighted. When adjust setting off time or only off time is set, the” OFF" is lighted. If on and off timer are both set, the “ON” and “OFF” are both lighted.
  • Page 103 Controller NOTE ●The connecting wire should be a little longer as to take away the switch board easily for maintenance. ●The connecting wire should be a little longer as to take away the controller easily for maintenance. ※The specifications, designs, and information in this book are subject to change without notice for product improvement.

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