koppel KV24 ODU-ARF21C Service Manual
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koppel KV24 ODU-ARF21C Service Manual

Light commercial air conditioning
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Summary of Contents for koppel KV24 ODU-ARF21C

  • Page 2 Contents Part 1 General Information ....................1 Part 2 Indoor Units ......................... 5 Part 3 Outdoor Units ......................55 Part 4 Installation ......................... 65 Part 5 Electrical Control System ..................91 ※The specifications, designs, and information in this book are subject to change without notice for product improvement.

  • Page 3: 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. Nomenclature ..................4   General Information...

  • Page 4: Model Lists

    ● Floor-standing Cooling only ● ● 1.2 Outdoor Units Universal Outdoor unit Model Compressor type Compressor Brand Matched indoor units KV24 CC-ARF21C KV24 ODU-ARF21C Rotary GMCC KV24 CM-ARF21C KV36 CC-ARF21C KV36 CM-ARF21C KV36 ODU-ARF21C Rotary GMCC KV36 DH-ARF21C KV36 FM-ARF21C...

  • Page 5: External Appearance

    External Appearance 2. External Appearance 2.1 Indoor Units Concealed Ducted Super slim cassette Ceiling-Floor Floor-standing 2.2 Outdoor Units Single fan outdoor unit Double fan outdoor unit General Information...

  • Page 6: Nomenclature

    Nomenclature 3. Nomenclature 3.1 Indoor / Outdoor Unit General Information...

  • Page 7: Part 2 Indoor Units

    Indoor Units Part 2 Indoor Units Super Slim Cassette Type ........... 6   Concealed Ducted Type ............. 19   Ceiling & Floor Type ............34   Floor-standing Type ............44   Indoor Units...

  • Page 8: Table Of Contents

    Indoor Units Super Slim Cassette Type 1. Features ................7   2. Dimensions ..............10   3. Service Space ..............11   4. Wiring diagrams .............. 12   5. Electric Characteristics ..........13   6. Sound Levels ..............14   7.

  • Page 9: Features

    Features 1. Features Overview  Compact design, super slim body size, less space requiring in installation Each louver can be separately controlled, more comfort air blowing is possible.  Fresh air intake function  Fresh air fulfills air quality more healthy and comfortable. ...
  • Page 10 Features Built-in draining pump  Due to improvement of structure, it is now more convenient to repair and replace the drain pump. Drain Pump  With built-in pump to make sure condensed water drain out reliably. Terminals for alarm lamp and long-distance on-off controller connection are standard ...
  • Page 11 Features Alarm lamp Long-distance on-off controller Indoor Units...

  • Page 12: Dimensions

    Dimensions 2. Dimensions 92 92 Fresh air intake 4-install hanger Body Gas side Liquid side Wiring connection port E-parts box Service hole for Test mouth & Test cover draining pump Drain hole 92 92 92 92 Panel Unit: mm Capacity (KBtu/h) 36/48 Indoor Units...

  • Page 13: Service Space

    Service Space 3. Service Space >1000m m >1000mm Indoor Units...

  • Page 14: Wiring Diagrams

    Wiring diagrams Wiring diagrams KV24CC-ARF21C KV36CC-ARF21C, KV48CC-ARF21C, KV60CC-ARF21C Indoor Units...

  • Page 15: Electric Characteristics

    Electric Characteristics Electric Characteristics Power Indoor Unit Supply Model Voltage KV24CC-ARF21C 220-230 KV36CC-ARF21C 220-230 KV48CC-ARF21C 220-230 KV60CC-ARF21C 220-230 Notes: MFA: Max. Fuse Amps. (A) Indoor Units...

  • Page 16: Sound Levels

    Sound Levels Sound Levels 1.4m Microphone Noise level dB(A) Model KV24CC-ARF21C KV36CC-ARF21C KV48CC-ARF21C KV60CC-ARF21C Indoor Units...

  • Page 17: Accessories

    Accessories Accessories Name Shape Quantity Installation paper board Installation Fittings Soundproof / insulation sheath Tubing & Fittings Out-let pipe sheath Out-let pipe clasp Drainpipe Fittings Drain joint Seal ring Remote controller & Its Frame Remote controller & Its Frame(The product you Remote controller holder have might not be provided the following...

  • Page 18: The Specification Of Power

    The Specification of Power 8. The Specification of Power 60000 Type（Cooling only） 24000 36000 48000 Phase 1- Phase 1- Phase Frequency and 220-230V~, 220-230V~, Voltage 60Hz 60Hz Indoor Unit Power Power Wiring (mm 3×2.5 3×2.5 Circuit Breaker/ 15/10 15/10 Fuse (A) Phase 1- Phase 1- Phase...

  • Page 19: Field Wiring

    Field Wiring 9. Field Wiring 24K, 36K Indoor Units...
  • Page 20 Field Wiring 48K, 60K Indoor Units...

  • Page 21: Concealed Ducted Type

    Concealed Ducted Type Concealed Ducted Type 1. Features ................20   2. Dimensions ..............23   3. Service Space ..............24   4. Wiring Diagrams ............. 25   5. Static Pressure ..............26   6. Electric Characteristics ..........28   7.
  • Page 22 Features Features 1.1 Installation accessories: (Optional) Front Board, Canvas Air Passage, Filter, Panel, for easy installation  Front Board Filter Panel 1.2 Easy Installation: Two air inlet styles (Bottom side or Rear side)  Air inlet from rear is standard for all capacity; air inlet from bottom is optional. ...
  • Page 23 Features  Replace the motor or centrifugal fan Remove the ventilated panel firstly. Remove a half of blower housing and take out the motor with centrifugal fan. Directly remove two bolts, and then replace the motor or centrifugal fan easily. Motor Blower Housing Ventilated Panel...
  • Page 24 Features 1.7 Built-in display board  The standard indoor unit can be controlled by wired controller. There is a display board with a receiver in the E-box. Move out the display, and fix it in other place, even  in the distance of 2m. The unit will realized remote control. ...
  • Page 25 Dimensions Dimensions air inlet from rear side Air filter ( optional ) 4-install hanger Liquid side Gas side 25 Drain pipe 25 Drain pipe Test mouth & Test cover 25 Drain connecting pipe ( for pump ) Fresh air intake Electric control box Air filter ( optional ) air inlet from bottom side...
  • Page 26 Service Space Service Space Ensure enough space required for installation and maintenance. All the indoor units reserve the hole to joint the fresh air pipe. The hole size as following: Indoor Units...
  • Page 27 Wiring Diagrams 4. Wiring Diagrams KV24DH-ARF21C, KV36DH-ARF21C, KV48DH-ARF21C, KV60DH-ARF21C Indoor Units...
  • Page 28 Static Pressure Static Pressure 1400 1200 1000 External static pressure (Pa) 2500 2000 1500 1000 External static pressure (Pa) 3000 2500 2000 1500 1000 External static pressure (Pa) Indoor Units...
  • Page 29 Static Pressure 3000 2500 2000 1500 1000 External static pressure (Pa) Indoor Units...
  • Page 30 Electric Characteristics Electric Characteristics Power Indoor Unit Supply Model Voltage 220-230 KV24DH-ARF21C 220-230 KV36DH-ARF21C 220-230 KV48DH-ARF21C 220-230 KV60DH-ARF21C Notes: MFA: Max. Fuse Amps. (A) Indoor Units...

  • Page 31: Concealed Duct Type

    Sound Levels Sound Levels Concealed Duct Type Discharge Suction Duct Duct 1.4m Microphone Noise level dB(A) Model KV24DH-ARF21C KV36DH-ARF21C KV48DH-ARF21C KV60DH-ARF21C Indoor Units...
  • Page 32 Accessories 8. Accessories Name Shape Quantity Soundproof / insulation sheath Tubing & Fittings Binding tape Seal sponge Drain joint Drainpipe Fittings (for cooling & heating) Seal ring Wired controller Wired controller & Its Frame ， Owner s manual Others Installation manual Magnetic ring (twist the electric wires L EMS &...
  • Page 33 The Specification of Power The Specification of Power 60000 Type（Cooling only） 24000 36000 48000 Phase 1- Phase 1- Phase Frequency and 220-230V~, 220-230V~, Voltage 60Hz 60Hz Indoor Unit Power Power Wiring (mm 3×2.5 3×2.5 Circuit Breaker/ 15/10 15/10 Fuse (A) Phase 1- Phase 1- Phase...
  • Page 34 Field Wiring Field Wiring 24K, 36K Indoor Units...
  • Page 35 Field Wiring 48K, 60K Indoor Units...

  • Page 36: Ceiling & Floor Type

    Ceiling & Floor Type Ceiling & Floor Type 1. Features ................35   2. Dimensions ..............36   3. Service Space ..............37   4. Wiring Diagrams ............. 38   5. Electric Characteristics ..........39   6. Sound Levels ..............39  ...
  • Page 37 Features 1. Features 1.1. New design, modern and elegant appearance. 1.2. Convenient installation --The ceiling type can be easily installed into a corner 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 structure such as one lighting.
  • Page 38 Dimensions 2. Dimensions Wiring connection port Drain discharge port Fresh air intake Refrigerant pipe hole Hanging arm Capacity (kBtu/h) 1068 1285 1200 48~60 1650 1565 Indoor Units...
  • Page 39 Service Space 3. Service Space Indoor Units...
  • Page 40 Wiring Diagrams 4. Wiring Diagrams KV24CM-ARF21C, KV36CM-ARF21C KV48CM-ARF21C, KV60CM-ARF21C Indoor Units...
  • Page 41 Electric Characteristics 5. Electric Characteristics Power Indoor Unit Supply Model Voltage 220-230 KV24CM-ARF21C 220-230 KV36CM-ARF21C 220-230 KV48CM-ARF21C 220-230 KV60CM-ARF21C Notes: MFA: Max. Fuse Amps. (A) 6. Sound Levels Microphone 1.5m Air outlet side Microphone Ceiling Floor Noise level dB(A) Model KV24CM-ARF21C KV36CM-ARF21C KV48CM-ARF21C...
  • Page 42 Accessories 7. Accessories Name Shape Quantity 1. Remote controller Remote controller & Its holder(The product you 2. Remote controller holder have might not be provided the following accessories) 3. Mounting screw (ST2.9×10-C-H) 4. Alkaline dry batteries (AM4) 5. Owner's manual 6.
  • Page 43 The Specification of Power 8. The Specification of Power 60000 Type（Cooling only） 24000 36000 48000 Phase 1- Phase 1- Phase Frequency and 220-230V~, 220-230V~, Voltage 60Hz 60Hz Indoor Unit Power Power Wiring (mm 3×2.5 3×2.5 Circuit Breaker/ 15/10 15/10 Fuse (A) Phase 1- Phase 1- Phase...
  • Page 44 Ceiling & Floor Type 9. Field Wiring 24K, 36K Ceiling & Floor Type...
  • Page 45 Ceiling & Floor Type 48K, 60K Ceiling & Floor Type...

  • Page 46: Floor-Standing Type

    Floor-standing Type Floor-standing Type Features ................45     Dimensions ..............46     Service Space ..............47     Wiring Diagrams ............. 48     Electric Characteristics ..........49     Sound Levels ..............50     Accessories ..............51  ...
  • Page 47 Features Features 1.1. Fashionable design, modern and elegant appearance. 1.2. Air Outlet Dustproof When turned off, the air outlet louver of the unit can be closed manually to prevent the dust from falling 1.3. Simple and bright panel Adopts simple and bright style panel, suitable for most different space. 1.4.
  • Page 48 Dimensions Dimensions Dimension W(mm) D(mm) H(mm) Mode 1800 1925 Floor-standing Type...
  • Page 49 Service Space Service Space Floor-standing Type...
  • Page 50 Wiring Diagrams 4. Wiring Diagrams KV36FM-ARF21C, KV60FM-ARF21C Floor-standing Type...
  • Page 51 Electric Characteristics 5. Electric Characteristics Power Indoor Unit Supply Model Voltage 220-230 KV36FM-ARF21C 220-230 KV60FM-ARF21C Notes: MFA: Max. Fuse Amps. (A) Floor-standing Type...
  • Page 52 Sound Levels Sound Levels Microphone Noise level dB(A) Model KV36FM-ARF21C KV60FM-ARF21C Floor-standing Type...

  • Page 53: Part

    Accessories Accessories Part Name Shape Quantity Safety Lock Self-tapping Screw 3.9×25 Flat Washers Bushing-Sleeve Cover Sound/Heat Insulation Sleeves Seal Drain joint Pipe - hole - protection Ring Remote Battery Remote Controller Connection Cables Remote controller manual User's manual Installation manual Floor-standing Type...
  • Page 54 The Specification of Power 8. The Specification of Power 60000 Type（Cooling only） 36000 Phase 1- Phase Frequency and Voltage 220-230V~, 60Hz Indoor Unit Power Power Wiring (mm 3×2.5 Circuit Breaker/ Fuse (A) 15/10 Phase 1- Phase 3- Phase Frequency and Voltage 220-230V~, 60Hz 220-230V~, 60Hz Outdoor Unit Power...
  • Page 55 Field Wiring Field Wiring Floor-standing Type...
  • Page 56 Field Wiring Floor-standing Type...

  • Page 57: Part 3 Outdoor Units

    Outdoor Units Part 3 Outdoor Units Dimensions ..............56     Service Space ..............58     Piping Diagrams .............. 59     Wiring Diagrams ............. 60     Electric Characteristics ..........62     Operation Limits ............. 63    ...
  • Page 58 Dimensions 1. Dimensions Unit：mm Model(KBtu/h) 1030 Outdoor Units...
  • Page 59 Dimensions Unit：mm Model(KBtu/h) 48~60 1333 1045 Outdoor Units...
  • Page 60 Service Space 2. Service Space (Wall or obstacle) Air inlet More than 30cm More than 60cm More than 30cm Maintain channel Air inlet More than 60cm Air outlet More than 200cm Outdoor Units...

  • Page 61: Piping Diagrams

    Piping Diagrams 3. Piping Diagrams KV24ODU-ARF21C INDOOR OUTDOOR LIQUID SIDE Throttle orifice T3 Condenser temp. sensor HEAT EXCHANGE HEAT (EVAPORATOR) EXCHANGE T1 Room temp. T4 Ambient (CONDENSER) sensor temp. sensor T2 Evaporator temp. sensor T5 Discharge temp. sensor GAS SIDE COMPRESSOR KV36ODU-ARF21C, KV48ODU-ARF21C, KV60ODU-CRF21C INDOOR...
  • Page 62 Wiring Diagrams 4. Wiring Diagrams KV24ODU-ARF21C KV36ODU-ARF21C Outdoor Units...
  • Page 63 Wiring Diagrams KV48ODU-ARF21C KV60ODU-CRF21C Outdoor Units...
  • Page 64 Electric Characteristics 5. Electric Characteristics Indoor Units Power Supply Model Voltage Min. Max. KV24ODU-ARF21C 220-230V 198V 242V KV36ODU-ARF21C 220-230V 198V 242V KV48ODU-ARF21C 220-230V 198V 242V KV60ODU-CRF21C 220-230V 198V 242V Notes: MFA: Max. Fuse Amps. (A) Outdoor Units...

  • Page 65: Operation Limits

    Operation Limits 6. Operation Limits Temperature Cooling operation Drying operation Mode Room temperature 17℃～32℃ 17℃～32℃ 0℃～50℃ 0℃～50℃ Outdoor temperature （-15℃～50℃：For 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 66 Sound Levels 7. Sound Levels Outdoor Unit Microphone 1.0m Note: H= 0.5 × height of outdoor unit Model Noise level dB(A) KV24ODU-ARF21C KV36ODU-ARF21C KV48ODU-ARF21C KV60ODU-CRF21C Outdoor Units...

  • Page 67: Part 4 Installation

    Installation Part 4 Installation 1. Installation Procedure ............. 66 2. Location selection ............67 3. Indoor unit installation ............ 68 4. Outdoor unit installation (Side Discharge Unit) .... 79 5. Refrigerant pipe installation ........... 80 6. Drainage pipe installation ..........82 7.

  • Page 68: 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 Insulating the joint part of refrigerant pipe...

  • Page 69: 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 70: Indoor Unit Installation

    Indoor unit installation 3. Indoor unit installation 3.1 Super slim cassette indoor unit installation 3.1.1 Service space for indoor unit Capacity(KBtu) >235 36/48 >275 >317 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. Drill four holes of Ø12mm, 45~50mm deep at the selected positions on the ceiling.
  • Page 71 Indoor unit installation 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. Use a leveling instrument to make sure the levelness of the main body is within ±1°.
  • Page 72 Indoor unit installation Remove the 4 corner covers. Hang the panel to the hooks on the mainbody. If the panel is with auto-lift grille, please watch the ropes lifting the grille, DO NOT make the ropes enwinded or blocked. Tighten the screws under the panel hooks till the panel closely stick on the ceiling to avoid condensate water.
  • Page 73 Indoor unit installation 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. Install the 4 corner covers back. Note: The panel shall be installed after the wiring is connected. Installation...
  • Page 74 Indoor unit installation 3.2 Concealed duct indoor unit installation 3.2.1 Service space for indoor unit 3.2.2 Bolt pitch Size of outline dimension mounted plug Capacity(KBtu) 1240 48/60 1240 3.2.3 Install the pendant bolt 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.
  • Page 75 Indoor unit installation 3.2.4 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. Use a leveling instrument to make sure the levelness of the main body is within ±1°.
  • Page 76 Indoor unit installation 3.2.7 Change the air inlet direction ① Take off ventilation panel and flange, cut off the staples at side rail. ② Stick the attached seal sponge as per the indicating place in the following fig, and then change the mounting positions of air return panel and air return flange .
  • Page 77 Indoor unit installation 3.3 Ceiling & floor indoor unit installation 3.3.1 Service space for indoor unit 3.3.2 Bolt pitch ① Ceiling installation Capacity (KBtu/h) 1200 48~60 1565 ② Wall-mounted installation 3.3.3 Install the pendant bolt ① Ceiling installation Installation...
  • Page 78 Indoor unit 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 Wall-mounted installation Install the tapping screws onto the wall.(Refer to picture below) 3.3.4 Install the main body ①...
  • Page 79 Indoor unit installation Put the side panels and grilles back. ② Wall-mounted installation Hang the indoor unit by insert the tapping screws into the hanging arms on the main unit. (The bottom of body can touch with floor or suspended, but the body must install vertically.) Installation...
  • Page 80 Indoor unit installation 3.4 Floor standing indoor unit installation 3.4.1 Service space for indoor unit a. A place which provides the spaces around the indoor unit as required above in the diagram. b. A place where is no obstacle near the inlet and outlet area. c.
  • Page 81 Outdoor unit installation (Side Discharge Unit) 3.4.2.3. Take the Pipe Clip off before connecting the pipes and wiring; fit it when these finished. Use accessories to connect the pipes/wires on both sides and back side. 4. Outdoor unit installation (Side Discharge Unit) 4.1 Service space for outdoor unit (Wall or obstacle) More than 30cm...

  • Page 82: Refrigerant Pipe Installation

    Refrigerant pipe installation 4.2 Bolt pitch For the value of A and B, please refer to the dimension part. 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 83 Refrigerant pipe installation Lean Crude Burr 5.2.5 Insulate the copper pipe Before test operation, the joint parts should not be heat insulated.  5.2.6 Flare the pipe  Insert a flare nut into the pipe before flaring the pipe  According to the following table to flare the pipe Flare dimension A (mm) Pipe diameter...

  • Page 84: Drainage Pipe Installation

    6. Drainage pipe installation 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 85 6. 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. 6.2.4 Supporter gap of drainage pipe ...
  • Page 86 6. 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. Pump head of big four way cassette: 750mm Pump head of compact four way cassette: 500mm ...
  • Page 87 6. 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 88: Vacuum Drying And Leakage Checking

    7. Vacuum Drying and Leakage Checking 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. ...

  • Page 89: Additional Refrigerant Charge

    8. Additional refrigerant charge 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 by the diameter and length of the liquid pipe between indoor and outdoor unit.

  • Page 90: Engineering Of Insulation

    9. Engineering of insulation 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 ...

  • Page 91: Engineering Of Electrical Wiring

    10. 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 92: Test Operation

    11. Test operation 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 93: Part 5 Electrical Control System

    Electrical Control System Part 5 Electrical Control System Electrical Control Function ........92     Troubleshooting ............100     Controller ..............125     Electrical Control System...
  • Page 94 Control Function Electrical 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 95: 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) The louver operates same as in cooling mode. (4) Auto fan: High Medium 1.3.2 Cooling Mode...
  • Page 96 Control Function Electrical 1.3.2.3 Evaporator low temperature T2 protection. >= ---T2<0℃, the compressor will stop and restart when T2 5℃. ---0℃≦T2<4℃, the compressor frequency will be limited and decreased to the lower level ---4℃≤T2<7℃, the compressor will keep the current frequency. ---T2>7℃, the compressor frequency will not be limited.
  • Page 97 Electrical Control Function 1.3.5 Timer function 1.3.5.1 Timing range is 24 hours. 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.
  • Page 98 Control Function Electrical 1.3.9 Follow me(Optional) If the indoor PCB receives the signal which results from pressing the FOLLOW ME button on remote controller, the buzzer will emit a sound and this indicates the follow me function is initiated. But when the indoor PCB receives signal which sent from remote controller every 3 minutes, the buzzer will not respond.
  • Page 99 Electrical Control Function The frequency after the frequency limit The frequency of sending to 341 Indoor unit evaporator outlet temp.(heating T2， If the temp. is lower than -9 degree, the digital display tube will cooling T2B) show “-9”.If the temp. is higher than 70 degree, the digital Condenser pipe temp.(T3) display tube will show “70”.
  • Page 100 Control Function Electrical If the temp. is lower than -9 degree, the digital display tube will show “9”.If the temp. is higher than 70 degree, the digital Indoor room temp. of 1# indoor unit display tube will show “70”. If the capacity demand is 0, , the digital display tube will show “0.
  • Page 101 Electrical Control Function Shutdown stop Electrical disconnect DR stop Electrical Control System...

  • Page 102: Troubleshooting

    Troubleshooting 2. Troubleshooting 2.1 Display board 2.1.1 Icon explanation on indoor display board (Super slim cassette). 2.1.2 Icon explanation on indoor display board (Duct) PRE-DEF indicator(cooling and heating type) or fan only indicator(cooling only type) Alarm indicator Timer indicator Infrared signal receiver Operation lamp Display digital tube Temporary button...
  • Page 103 Troubleshooting 2.1.5 Display board of floor-standing Electrical Control System...
  • Page 104 Troubleshooting 2.2 Indoor unit malfunction For floor standing Malfunction Error Code Indoor EEPROM malfunction Communication malfunction between indoor and outdoor units Open or short circuit of T1 temperature sensor Open or short circuit of T2 temperature sensor Refrigerant leakage detection Outdoor unit is faulty (for old communication protocol) Overcurrent protection (For some units) Open or short circuit of T4 temperature sensor...
  • Page 105 Troubleshooting For other type: Operation Lamp Malfunction Error Code Timer Lamp (flashes) Indoor EEPROM malfunction Communication malfunction between indoor and outdoor units Open or short circuit of T1 temperature sensor Open or short circuit of T2 temperature sensor Refrigerant leakage detection Water level alarm Communication error between master and slave unit (for twins system) Another indoor unit malfunction (for twins system)
  • Page 106 Troubleshooting 2.3 Outdoor unit malfunction Display Malfunction or Protection Communication malfunction between indoor and outdoor units Overcurrent protection Ambient temperature sensor (T4) is malfunction Outdoor heat-exchanger temperature sensor (T3) is malfunction Discharge temperature sensor (T5) is malfunction Outdoor EEPROM is malfunction IPM module protection Voltage protection (too high or too low) Protection of ultra-low ambient temperature...
  • Page 107 Troubleshooting 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 2.4.1.2. Outdoor unit malfunction Electrical Control System...
  • Page 108 Troubleshooting 2.4.1.3. Indoor EEPROM malfunction EEPROM: An electrically erasable programmable read-only memory whose contents can be erased and reprogrammed using a pulsed voltage. 2.4.1.4. Water-level alarm malfunction Electrical Control System...
  • Page 109 Troubleshooting 2.4.1.5. Refrigerant Leakage Detection 2.4.1.6 Communication malfunction between indoor and outdoor units The same as E1 in outdoor. Electrical Control System...
  • Page 110 Troubleshooting 2.4.2 For the super-slim cassette with up-down panel 2.4.2.1 Communication error between indoor unit and up-down panel F0  Displayed Communication failure between  indoor unit and up-down panel Check the wire connection  between up-down panel and  Correct the connection  indoor unit, is it right?  Replace the up-down panel Replace the indoor main PCB 2.4.2.2 Up-down panel is defective Electrical Control System...
  • Page 111 Troubleshooting 2.4.3 For the unit with TWINS function (For the super-slim cassette & A5 duct) 2.4.3.1 Communication between master unit and indoor unit malfunction 2.4.3.2 Other malfunction between master unit and indoor unit One indoor unit displays ”E9”, which means another indoor unit is faulty. Check another indoor unit’s error code and then follow the appropriate solutions to solve the malfunction.
  • Page 112 Troubleshooting 2.4.4 For the outdoor unit 2.4.4.1. F4 malfunction EEPROM: An electrically erasable programmable read-only memory whose contents can be erased and reprogrammed using a pulsed voltage. Electrical Control System...
  • Page 113 Troubleshooting 2.4.4.2. E1 malfunction For 485 communication Electrical Control System...
  • Page 114 Troubleshooting 2.4.4.3. J4 malfunction Electrical Control System...
  • Page 115 Troubleshooting 2.4.4.4. F1, F2, F3 malfunction Error E4 display Judge 1: Outdoor condenser temp. sensor (T3) is malfunction Check whether the wiring of the  condenser temp. sensor(T3) is  Connect the wiring well broken off Check whether the resistance of  condenser temp. sensorT3) is wrong  Replace condenser temp. sensor(T3) refer to the Appendix 1 Judge 2: Outdoor ambient temp. sensor (T4) is malfunction Check whether the wiring of the  outdoor ambient temperature  Connect the wiring well sensor (T4) is broken off Check whether the resistance of  outdoor ambient temperature  Replace outdoor ambient  sensor (T4) is wrong refer to the  temperature sensor (T4) Appendix 1 Judge 3: Compressor discharge temp. sensor (T5) is malfunction Check whether the wiring of the  compressor discharge temperature  Connect the wiring well sensor (T5) is broken off Check whether the resistance of ...
  • Page 116 Troubleshooting 2.4.4.5. P6 malfunction Electrical Control System...
  • Page 117 Troubleshooting 2.4.4.6. J5 malfunction Electrical Control System...
  • Page 118 Troubleshooting 2.4.4.7. J6 malfunction P2 display Low pressure protection Whether the wiring between the low pressure protector and main control Connect it well board is connected well or correctly Whether the low pressure protector is broken Method: Disconnect the plug. Measure the resistance of the low pressure protector.
  • Page 119 Troubleshooting 2.4.4.8. F0 malfunction Electrical Control System...
  • Page 120 Troubleshooting 2.4.4.9. J2 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 Temperature protection of  compressor discharge Check whether the  Check whether the  compressor discharge temp. is  Stop leaking and add refrigerant refrigerant is leak more than 115°C ? Check whether connection is right between compressor discharge temp.
  • Page 121 Troubleshooting 2.4.4.10. J1 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 Check the connection  between temperature  Correct the connection High temperature protection of  sensor and PCB. condenser Check whether the condenser temperature is Check whether the Higher than 65°C resistance of condenser...
  • Page 122 Troubleshooting 2.4.4.11. P0 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: Electrical Control System...
  • Page 123 Troubleshooting 2.4.4.12. J0 malfunction Electrical Control System...
  • Page 124 Troubleshooting Appendix 1 Temperature Sensor Resistance Value Table (℃--K) ℃ ℃ ℃ ℃ K Ohm K Ohm K Ohm K Ohm 12.6431 2.35774 0.62973 115.266 108.146 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...
  • Page 125 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 126 Troubleshooting 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 127 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 128 Controller Buttons and functions : Decrease the set temp. Keeping pressing will decrease the temp with 1℃ per 0.5s. 1. Adjust : Increase the set temp. Keeping pressing will increase the temp with 1℃ per 0.5s. 2. Adjust 3. MODE: Once pressing, running mode will be selected in the following sequence: AUTO COOL HEAT...
  • Page 129 Controller 3.1.2 RG51C/E Remote Controller Specifications Model RG51C/E Rated Voltage 3.0V(2pieces of LR03 7＃ batteries) 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 COOL...
  • Page 130 Controller 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 131 Controller 3.1.3 R51M/(C)E Remote Controller Specifications Model R51M/(C)E Rated Voltage 3.0V Reaching Distance Environment Temperature Range -5℃～60℃ Introduction of Function Buttons on the Remote Controller : Decrease the set temp. Keeping pressing will decrease the temp with 1℃ per 0.5s. 1.
  • Page 132 Controller AUTO HIGH 9. ON/OFF: For turning on or turning off the air conditioner 10. TIME ON: For time ON 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. Adjusting the figure to 0.00 will cancel time ON setting.
  • Page 133 Controller 3.2 Wired Remote Controller 3.2.1 KJR-12B Name and functions of buttons on the wire controller Mode button: When press this button, the operation mode change as the following sequence: 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.
  • Page 134 Controller Adjust button: Set indoor temperature up. If press and hold on, it will increase at 1degree per 0.5 second. Adjust button: Set indoor temperature down. if press and hold on, it will decrease at 1degree per 0.5 Second. 10. Swing button: First press, start swing function; second press, stop swing. (Match to some model with swing function).
  • Page 135 Controller The wired controller will reset to factory setting with auto mode, auto fan and 24℃ setting temperature when the air conditioner restarts after power failure. And this may cause inconsistent displays on the wired controller and on the air conditioner. You need to readjust the running status through the wired controller.

This manual is also suitable for:

Kv36 odu-arf21cKv48 odu-arf21cKv60 odu-crf21c

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