Kaisai KOB30U-18HFN32 Service Manual
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Kaisai KOB30U-18HFN32 Service Manual

Super dc inverter
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KAISAI
SUPER DC INVERTER SERIES
Service Manual 2019
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Summary of Contents for Kaisai KOB30U-18HFN32

  • Page 1 KAISAI SUPER DC INVERTER SERIES Service Manual 2019...
  • Page 2 Contents Part 1 General Information ....................1 Part 2 Indoor Units ......................... 5 Part 3 Outdoor Units ......................83 Part 4 Installation........................99 Part 5 Electrical Control System ..................129 ※The specifications, designs, and information in this book are subject to change without notice for product improvement.
  • Page 3 General Information Part 1 General Information 1. Model List ..................... 2 2. External Appearance ................3 2.1 Indoor Units ....................... 3 2.2 Outdoor Units ......................3 General Information...

  • Page 4: Model List

    ● ● ● ● ● ● Compact cassette Cooling and heating 1.2 Outdoor Units Universal Outdoor unit Model Compressor type Compressor Brand Matched indoor units KTI-18HWF32 KOB30U-18HFN32 Rotary GMCC KUE-18HRF32 KCD-24HRF32 KOCA30U-24HFN32 Rotary GMCC KTI-24HWF32 KUE-24HRF32 KCD-36HRF32 KOD30U-36HFN32 Rotary GMCC...

  • Page 5: External Appearance

    External Appearance 2. External Appearance 2.1 Indoor Units Duct Super slim cassette Ceiling-Floor Compact Four-way cassette 2.2 Outdoor Units Single fan outdoor unit Double fan outdoor unit General Information...
  • Page 6 Indoor Units Part 2 Indoor Units Super Slim Cassette Type ............6 A6 Duct Type ................27 Ceiling & Floor Type ..............50 Compact Four-way Cassette Type ........69 Indoor Units...

  • Page 7: Table Of Contents

    Super Slim Cassette Type Super Slim Cassette Type 1. Features ................7 2. Dimensions ..............10 3. Service Space ..............11 4. Wiring Diagrams ............12 5. Air Velocity Distributions (Reference Data) ....18 6. Electric Characteristics ..........21 7. Sound Levels ..............22 8.

  • Page 8: Features

    Features 1. Features 1.1 Overview ➢ Compact design, super slim body size, less space requiring in installation ➢ Each louver can be separately controlled, more comfort air blowing is possible. ➢ Auto-lifting panel design, more convenient to clean and maintain the filter. (optional) Fresh air intake function ➢...
  • Page 9 Features Built-in draining pump ➢ Due to the improvement of structure, more convenient to repair or replace the draining pump. Draining Pump ➢ Built-in draining pump to make sure condensed water drain out reliably. 1.6 Terminals for alarm lamp and long-distance on-off controller connection are standard ➢...
  • Page 10 Features Alarm lamp Long-distance on-off controller 1.7 Twins Combination(24k) ➢ The units can be installed as Twin systems: one outdoor unit can connect with two indoor units. The indoor units can be combined in any of the different available ratings. Indoor Units...

  • Page 11: Dimensions

    Dimensions 2. Dimensions 92 92 75 F r e s h a i r i n t a k e 1 3 6 4 - i n s t a l l h a n g e r 1 2 6 B o d y G a s s i d e L i q u i d s i d e...

  • Page 12: Service Space

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

  • Page 13: Wiring Diagrams

    Wiring Diagrams 4. Wiring Diagrams KCD-24HRF32, KCD-36HRF32, KCD-48HRF32, KCD-55HRF32 4.1 Some connectors introduce: A For remote control (ON-OFF) terminal port CN23 and short connector of JR6 1. Remove the short connector of JR6 when you use ON-OFF function; 2. When remote switch off (OPEN), the unit would be off; 3.
  • Page 14 Wiring Diagrams B For ALARM terminal port CN33 1. Provide the terminal port to connect ALARM, but no voltage of the terminal port , the power from the ALARM system (not from the unit ) 2. Although design voltage can support higher voltage, but we strongly ask you connect the power less than 24V, current less than 0.5A 3.
  • Page 15 Wiring Diagrams Indoor Units...
  • Page 16 Wiring Diagrams Micro-Switch Introduce: A. Micro-switch SW1 is for selection of indoor fan stop temperature (TEL0) when it is in anti- cold wind action in heating mode. Range: 24 C, 15 C, 8 C, according to EEROM setting (reserved for special customizing). T E L 0 + 1 6 S e t t i n g f a n s p e e d T E L 0 + 1 4...
  • Page 17 Wiring Diagrams C.Micro-switch SW3 is for selection of auto-restart function. Range: Active, inactive D. Micro-switch SW5 is for setting the master or slave unit when the unit is in twin connection. Range: Master no slave (Normal 1 drive 1 connection), Master (2 positions without difference), Slave E.Micro-switch SW6 is for selection of temperature compensation in heating mode.
  • Page 18 Wiring Diagrams G. Dial-switch ENC1: The indoor PCB is universal designed for whole series units from 18K to 55K. This ENC1 setting will tell the main program what size the unit is. NOTE: Usually there is glue on it because the switch position cannot be changed at random unless you want to use this PCB as a spare part to use in another unit.

  • Page 19: Air Velocity Distributions (Reference Data)

    Air Velocity Distributions (Reference Data) Air Velocity Distributions (Reference Data) 24K: Cooling: Heating: Indoor Units...
  • Page 20 Air Velocity Distributions (Reference Data) 30-42K: Cooling: Heating: Indoor Units...
  • Page 21 Air Velocity Distributions (Reference Data) 48-55K： Cooling: Heating: Indoor Units...

  • Page 22: Electric Characteristics

    Electric Characteristics Electric Characteristics Power Indoor Unit Supply Model Voltage KCD-24HRF32 220-240V 198V 254V KCD-36HRF32 220-240V 198V 254V KCD-48HRF32 220-240V 198V 254V KCD-55HRF32 220-240V 198V 254V Notes: MFA: Max. Fuse Amps. (A) Indoor Units...

  • Page 23: Sound Levels

    Sound Levels Sound Levels 1 . 4 m M i c r o p h o n e Noise level dB(A) Model Noise Power dB(A) KCD-24HRF32 KCD-36HRF32 KCD-48HRF32 KCD-55HRF32 Indoor Units...

  • Page 24: Accessories

    Accessories Accessories Name Shape Quantity Installation Fittings Installation paper board Tubing & Fittings Soundproof / insulation sheath 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 25: The Specification Of Power

    The Specification of Power 9. The Specification of Power Model(kBtu/h) 48~55 Phase 1-phase 1-phase Frequency 220-240V, 50Hz 220-240V, 50Hz Voltage Indoor Power 3×1.0(3×2.5 3×1.0(3×2.5 with POWER WIRING with auxiliary electric auxiliary electric heater) heater) CIRCUIT BREAKER/Fuse (A) 15/10 15/10 Phase 1-phase 3-phase 3-phase...

  • Page 26: Field Wiring

    Field Wiring 10. Field Wiring KCD-24HRF32, KCD-36HRF32 Indoor Units...
  • Page 27 Field Wiring KCD-48HRF32, KCD-55HRF32 Indoor Units...
  • Page 28 A6 Duct Type A6 Duct Type 1. Features ................. 28 2. Dimensions ..............31 3. Service Space ..............32 4. Wiring Diagrams ............33 5. Static Pressure ............... 39 6. Electric Characteristics ..........45 7. Sound Levels ..............46 8. Accessories ..............47 9.

  • Page 29: Features

    Features Features 1.1 Higher Static Pressure ➢ As a ducted air conditioner with medium static pressure, it has the widest static pressure range. ➢ The maximum static pressure reaches 160 Pa 1.2 Slim Design ➢ The industry Lowest height is designed to be fitted into tight roof spaces. *18K unit - 210mm,24K/36K unit - 249mm，48K unit -300mm Constant air volume control ➢...
  • Page 30 Features Air intake from bottom (Optional) Air intake from rear (Standard) 1.5 Communication wire connection ➢ A6 duct uses two wires without polarity connection way, which almost has no mistake during the installation. 1.6 Easy Clean ➢ With a larger window design, once the motor and the blower wheels have been detached, heat exchanger and water receiver tray in behind can be seen very clearly.
  • Page 31 Features 1.8 Built-in drain pump (Optional) ➢ Built-in drain pump can lift the water to 750mm upmost, which widens the drainage piping range. Indoor Units...

  • Page 32: Dimensions

    Dimensions Dimensions Model unit (KBtu/h) inch 34.65 8.27 26.54 23.62 5.51 27.80 1.97 5.35 30.79 7.48 1.57 36.22 20.00 3.07 5.83 3.46 4.41 1100 1001 1140 inch 43.31 9.80 30.47 27.56 5.51 36.46 1.97 6.89 39.41 8.98 0.20 44.88 23.54 3.15 5.91 5.12...

  • Page 33: Service Space

    Service Space Service Space Ensure enough space required for installation and maintenance. Indoor Units...

  • Page 34: Wiring Diagrams

    Wiring Diagrams Wiring Diagrams KTI-18HWF32, KTI-24HWF32, KTI-36HWF32, KTI-48HWF32, KTI-55HWF32 Indoor Units...
  • Page 35 Wiring Diagrams 4.1 Some connectors introduce: A. For new fresh motor terminal port (also for Anion generator) CN43: 1. Connect the fan motor to the port, no need care L/N of the motor; 2. The output voltage is the power supply; 3.
  • Page 36 Wiring Diagrams B For ALARM terminal port CN33 1. Provide the terminal port to connect ALARM, but no voltage of the terminal port, the power from the ALARM system (not from the unit) 2. Although design voltage can support higher voltage, but we strongly ask you connect the power less than 24V, current less than 0.5A.
  • Page 37 Wiring Diagrams 4.2 Micro-Switch Introduce: A. Micro-switch SW1 is for selection of indoor fan stop temperature (TEL0) when it is in anti- cold wind action in heating mode. Range: 24 C, 15 C, 8 C, according to EEROM setting (reserved for special customizing). For 12K: T E L 0 + 2 3 - T E 1...
  • Page 38 Wiring Diagrams C. Micro-switch SW3 is for selection of auto-restart function. Range: Active, inactive D. Micro-switch SW5 is for setting the master or slave unit when the unit is in twin connection. Range: Master no slave (Normal 1 drive 1 connection), Master (2 positions without difference), Slave E.Micro-switch SW6 is for selection of temperature compensation in heating mode.

  • Page 39: Static Pressure

    Wiring Diagrams G. Dial-switch ENC1: The indoor PCB is universal designed for whole series units from 18K to 55K. This ENC1 setting will tell the main program what size the unit is. NOTE: Usually there is glue on it because the switch position cannot be changed at random unless you want to use this PCB as a spare part to use in another unit.
  • Page 40 Static Pressure A ir f lo w r a t e （ m 3/ h ） （ n o f i lt e r ） 2 0 0 0 1 8 0 0 1 6 0 0 1 5 0 0 1 4 0 0 1 2 0 0 1 0 0 0...
  • Page 41 Static Pressure A ir f lo w r a t e ( m 3/ （ ） n o f i lt e r 2 4 0 0 2 2 0 0 2 0 0 0 1 8 0 0 1 6 0 0 1 4 0 0 1 2 0 0 1 0 0 0...
  • Page 42 Static Pressure 30k/36k A ir f lo w r a t e ( m 3/ （ n o f i lt e r ） 3 2 0 0 3 0 0 0 2 8 0 0 2 6 0 0 2 5 0 0 2 4 0 0 2 2 0 0...
  • Page 43 Static Pressure A ir f lo w r a t e ( m 3/ h ) （ n o f i lt e r ） 4 8 0 0 4 4 0 0 4 0 0 0 3 6 0 0 3 2 0 0 3 1 0 0 2 8 0 0...
  • Page 44 Static Pressure A i r f l o w r a t e (m 3/ h ) ( n o f i l t e r ) 4 8 0 0 4 4 0 0 4 0 0 0 3 6 0 0 3 2 0 0 2 8 0 0 2 4 0 0...

  • Page 45: Electric Characteristics

    Electric Characteristics 6. Electric Characteristics Indoor Unit Power Supply Model Voltage Min. Max. KTI-18HWF32 220-240V 198V 254V KTI-24HWF32 220-240V 198V 254V KTI-36HWF32 220-240V 198V 254V KTI-48HWF32 220-240V 198V 254V KTI-55HWF32 220-240V 198V 254V Note: MFA: Max. Fuse Amps. (A) Indoor Units...

  • Page 46: Sound Levels

    Sound Levels Sound Levels C o n c e a l e d D u c t T y p e D i s c h a r g e S u c t i o n D u c t D u c t 1 .

  • Page 47: Accessories

    Accessories 8. Accessories Name Shape Quantity Tubing & Fittings Soundproof / insulation sheath Drain joint Drainpipe Fittings (for cooling & heating) Seal ring Magnetic ring EMC & It’s Fitting (twist the electric wires L and N around (for some models) the magnetic ring to five circles) Wired controller Wired controller &...

  • Page 48: The Specification Of Power

    The Specification of Power The Specification of Power Model(kBtu/h) 18~24 Phase 1-phase Frequency and 220-240V, 50Hz Voltage POWER 3×2.5(3×4.0 with POWER WIRING auxiliary electric heater) CIRCUIT BREAKER/Fuse (A) 25/20 Indoor/Outdoor Connecting Wiring 2×0.2 (Weak Electric Signal) (mm 3×1.0(3×2.5 with Indoor/Outdoor Connecting Wiring auxiliary electric (Strong Electric Signal) (mm heater)

  • Page 49: Field Wiring

    Field Wiring Field Wiring 18k~55k Indoor Units...
  • Page 50 Ceiling & Floor Type Ceiling & Floor Type 1. Features ....................51 2. Dimensions ..................52 3. Service Space ..................53 4. Wiring Diagrams ................54 5. Electric Characteristics ..............60 6. Sound Levels ..................60 7. Air Velocity and Temperature Distributions (Reference Data) ..61 8.

  • Page 51: 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 52: Dimensions

    Dimensions 2. Dimensions 2 - 3 3 W i r i n g c o n n e c t i o n p o r t 2 - 4 0 D r a i n d i s c h a r g e p o r t 1 2 0 F r e s h a i r i n t a k e R e f r i g e r a n t p i p e h o l e...

  • Page 53: Service Space

    Service Space 3. Service Space Indoor Units...

  • Page 54: Wiring Diagrams

    Wiring Diagrams 4. Wiring Diagrams KUE-18HRF32, KUE-24HRF32 KUE-36HRF32, KUE-48HRF32, KUE-55H Indoor Units...
  • Page 55 Wiring Diagrams Indoor Units...
  • Page 56 Wiring Diagrams 4.1 Some connectors introduce: A For remote control (ON-OFF) terminal port CN23 1. Remove the short connector in CN23 when you use ON-OFF function; 2. When remote switch off (OPEN), the unit would be off; 3. When remote switch on (CLOSE), the unit would be on; 4.
  • Page 57 Wiring Diagrams 2. Although design voltage can support higher voltage, but we strongly ask you connect the power less than 24V, current less than 0.5A 3. When the unit occurs the problem, the relay would be closed, then ALARM works C.
  • Page 58 Wiring Diagrams 4.2 Micro-Switch Introduce: A. Micro-switch SW1 is for setting the master or slave unit when the unit is in twin connection. Range: Master no slave (Normal 1 drive 1 connection), Master (2 positions without difference), Slave B. Micro-switch SW2 is for selection of indoor FAN ACTION if room temperature reaches the setpoint and the compressor stops.
  • Page 59 Wiring Diagrams E.Micro-switch SW6 is for selection of temperature compensation in heating mode. This helps to reduce the real temperature difference between ceiling and floor so that the unit could run properly. If the unit is on-floor installed, 0 should be chosen. Range: 0 C, 2 C, 4...

  • Page 60: Electric Characteristics

    Electric Characteristics 5. Electric Characteristics Indoor Units Power Supply Model Voltage Min. Max. KUE-18HRF32 220-240V 198V 254V KUE-24HRF32 220-240V 198V 254V KUE-36HRF32 220-240V 198V 254V KUE-48HRF32 220-240V 198V 254V 220-240V 198V 254V KUE-55HRF32 Note: MFA: Max. Fuse Amps. (A) 6. Sound Levels M i c r o p h o n e 1 .

  • Page 61: Air Velocity And Temperature Distributions (Reference Data)

    Air Velocity and Temperature Distributions (Reference Data) 7. Air Velocity and Temperature Distributions (Reference Data) Model: KUE-18HRF32, KUE-24HRF32 Ceiling installation: Discharge angle 17° Discharge angle 50° Indoor Units...
  • Page 62 Air Velocity and Temperature Distributions (Reference Data) Floor installation: Discharge angle 17° Discharge angle 50° Indoor Units...
  • Page 63 Air Velocity and Temperature Distributions (Reference Data) Model: KUE-36HRF32 Ceiling installation: Discharge angle 17° Discharge angle 50° Indoor Units...
  • Page 64 Air Velocity and Temperature Distributions (Reference Data) Floor installation: Discharge angle 17° Discharge angle 50° Indoor Units...
  • Page 65 Air Velocity and Temperature Distributions (Reference Data) Model: KUE-48HRF32, KUE-55HRF32 Ceiling installation: Discharge angle 17° Discharge angle 50° Indoor Units...
  • Page 66 Air Velocity and Temperature Distributions (Reference Data) Floor installation: Discharge angle 17° Discharge angle 50° Indoor Units...

  • Page 67: Accessories

    Accessories 8. 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 Others 6.

  • Page 68: Field Wiring

    Field Wiring 10. Field Wiring KUE-18HRF32, KUE-24HRF32, KUE-36HRF32, KUE-48HRF32, KUE-55HRF32 Indoor Units...
  • Page 69 Compact Four-way Cassette Type Compact Four-way Cassette Type 1. Features ....................70 2. Dimensions ..................71 3. Service Space ..................72 4. Wiring Diagrams .................. 73 5. Air Velocity and Temperature Distributions (Reference Data) ..79 6. Electric Characteristics ..............80 7.

  • Page 70: Features

    Features 1. Features 1.1 New panel ➢ 360°surrounding air outlet design, affords comfortable feeling 1.2 Compact design ➢ The body size is 570×260×570mm, it’s just smaller than the ceiling board, so it’s very easy for installation and will not damage the decoration. The panel size is 647×50×647mm. ➢...

  • Page 71: Dimensions

    Dimensions 2. Dimensions KCA3U-12HRF32X L i q u i d s i d e G a s s i d e B o d y D r a i n h o l e W i r i n g c o n n e c t i o n p o r t ( f o r S e r v i c e ) E - p a r t s b o x - 1 5 0 D i s t r i b u t i o n d u c t...

  • Page 72: Service Space

    Service Space 3. Service Space Indoor Units...

  • Page 73: Wiring Diagrams

    Wiring Diagrams 4. Wiring Diagrams KCA3U-12HRF32X Indoor Units...
  • Page 74 Wiring Diagrams 4.1 Some connectors introduce: A For remote control (ON-OFF) terminal port CN23 and short connector of JR6 1. Remove the short connector of JR6 when you use ON-OFF function; 2. When remote switch off (OPEN), the unit would be off; 3.
  • Page 75 Wiring Diagrams C. For new fresh motor terminal port CN8 1. Connect the fan motor to the port, no need care L/N of the motor; 2. The output voltage is the power supply; 3. The fresh motor cannot excess 200W or 1A, follow the smaller one; 4.
  • Page 76 Wiring Diagrams Micro-Switch Introduce: A. Micro-switch SW1 is for selection of indoor fan stop temperature (TEL0) when it is in anti- cold wind action in heating mode. Range: 24 C, 15 C, 8 C, according to EEROM setting (reserved for special customizing). T E L 0 + 1 6 S e t t i n g f a n s p e e d T E L 0 + 1 4...
  • Page 77 Wiring Diagrams C.Micro-switch SW3 is for selection of auto-restart function. Range: Active, inactive D. Micro-switch SW5 is for setting the master or slave unit when the unit is in twin connection. Range: Master no slave (Normal 1 drive 1 connection), Master (2 positions without difference), Slave E.Micro-switch SW6 is for selection of temperature compensation in heating mode.
  • Page 78 Wiring Diagrams G. Dial-switch ENC1: The indoor PCB is universal designed for whole series units from 18K to 55K. This ENC1 setting will tell the main program what size the unit is. NOTE: Usually there is glue on it because the switch position cannot be changed at random unless you want to use this PCB as a spare part to use in another unit.

  • Page 79: Air Velocity And Temperature Distributions (Reference Data)

    Air Velocity and Temperature Distributions (Reference Data) 5. Air Velocity and Temperature Distribution s (Reference Data) A i r f l o w v e l o c i t y T e m p e r a t u r e Indoor Units...

  • Page 80: Electric Characteristics

    Electric Characteristics 6. Electric Characteristics Indoor Units Power Supply Model Voltage Min. Max. KCA3U-12HRF32X 220-240V 198V 254V Note: MFA: Max. Fuse Amps. (A) 7. Sound Levels 1 . 4 m M i c r o p h o n e Noise level dB(A) Model Noise Power dB(A)

  • Page 81: Accessories

    Outdoor Units 8. Accessories Name Shape Quantity Installation Fittings Installation paper board Tubing & Fittings Soundproof / insulation sheath 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...

  • Page 82: Field Wiring

    Outdoor Units 10. Field Wiring KCA3U-12HRF32X Outdoor Units...
  • Page 83 Outdoor Units Part 3 Outdoor Units 1. Dimensions ..............84 2. Service Space ..............86 3. Wiring Diagrams ............87 4. Piping Diagrams ............. 95 5. Electric Characteristics ..........96 6. Operation Limits ............97 7. Sound Levels ..............98 Outdoor Units...

  • Page 84: Dimensions

    Dimensions 1. Dimensions Unit：mm Model KOB30-12HFN32X KOB30U-18HFN32 KOCA30U-24HFN32 KOD30U-36HFN32 1030 Outdoor Units...
  • Page 85 Dimensions Unit：mm Model KOE30U-48HFN32 1333 1045 KOE30U-55HFN32 1333 1045 Outdoor Units...

  • Page 86: Service Space

    Service Space 2. 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 Units...

  • Page 87: Wiring Diagrams

    Wiring Diagrams 3. Wiring Diagrams KOB30-12HFN32X Outdoor Units...
  • Page 88 Wiring Diagrams KOB30U-18HFN32 Outdoor Units...
  • Page 89 Wiring Diagrams KOCA30U-24HFN32 Outdoor Units...
  • Page 90 Wiring Diagrams Outdoor Units...
  • Page 91 Wiring Diagrams KOD30U-36HFN32 Outdoor Units...
  • Page 92 Wiring Diagrams Outdoor Units...
  • Page 93 Wiring Diagrams KOE30U-48HFN32, KOE30U-55HFN32 Outdoor Units...

  • Page 94: Piping Diagrams

    Piping Diagrams 4. Piping Diagrams KOB30-12HFN32X, KOB30U-18HFN32, KOCA30U-24HFN32, I N D O O R O U T D O O R E l e c t r o n i c C A P I L I A R Y T U B E...

  • Page 95: Electric Characteristics

    Electric Characteristics 5. Electric Characteristics Outdoor Unit Power Supply Model Voltage Min. Max. KOB30-12HFN32X 220-240V 198V 254V KOB30U-18HFN32 220-240V 198V 254V KOCA30U-24HFN32 220-240V 198V 254V KOD30U-36HFN32 380-415V 342V 440V KOE30U-48HFN32 380-415V 342V 440V KOE30U-55HFN32 380-415V 342V 440V Notes: MFA: Max. Fuse Amps. (A)

  • Page 96: Operation Limits

    Operation Limits 6. Operation Limits Temperature Cooling operation Heating operation Drying operation Mode 17℃～32℃ 0℃～30℃ 17℃～32℃ Room temperature 0℃～50℃ -15℃～24℃ 0℃～50℃ （-15℃～50℃：For Outdoor temperature 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 97: Sound Levels

    Sound Levels 7. Sound Levels Outdoor Unit Microphone 1.0m Note: H= 0.5 × height of outdoor unit Model Noise Power dB(A) Noise level dB(A) KOB30-12HFN32X 55.5 KOB30U-18HFN32 KOCA30U-24HFN32 KOD30U-36HFN32 KOE30U-48HFN32 KOE30U-55HFN32 Outdoor Units...
  • Page 98 Installation Part 4 Installation 1. Installation Procedure ..........100 2. Location selection ............101 3. Indoor unit installation ..........102 4. Outdoor unit installation (Side Discharge Unit) ..115 5. Refrigerant pipe installation......... 116 6. Drainage pipe installation ..........120 7.

  • Page 99: 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 100: 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 101: 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 Model(kBtu/h) 24~36 >275 48/55 >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 102 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 103 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 lifing 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 104 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 connected. Installation...
  • Page 105 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 (KBtu/h) 18/24 36~55 1565 ② Wall-mounted installation 3.2.3 Install the pendant bolt ① Ceiling installation Select the position of installation hooks according to the hook holes positions showed in upper picture. Installation...
  • Page 106 Indoor unit installation 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) 3.2.4 Install the main body ①...
  • Page 107 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 108 Indoor unit installation 3.3 A6 duct indoor unit installation 3.3.1 Service space for indoor unit 3.3.2 Bolt pitch Size of outline dimension mounted lug Capacity(KBtu) 1140 30~36 1400 42~55 1240 3.3.3 Hang indoor unit 1. Please refer to the upper data to locate the four positioning screw bolt hole on the ceiling. Be sure to mark the areas where ceiling hook holes will be drilled.
  • Page 109 Indoor unit installation 4. After you select an installation location, align the refrigerant pipes, drain pipes, as well as indoor and outdoor wires with their connection points before mounting the unit. 5. Drill 4 holes 10cm (4”) deep at the ceiling hook positions in the internal ceiling. Be sure to hold the drill at a 90°...
  • Page 110 Indoor unit installation Change the fan motor static pressure corresponding to external duct static pressure. NOTE: 1.Do not put the connecting duct weight on the indoor unit. When connecting duct, use inflammable canvas tie-in to prevent vibrating. 3. Insulation foam must be wrapped outside the duct to avoid condensate. An internal duct underlayer can be added to reduce noise, if the end-user requires.
  • Page 111 Indoor unit installation 3.4 Compact cassette indoor unit installation 3.4.1 Service space for indoor unit 3.4.2 Bolt pitch 3.4.3 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. Then embed the expansible hooks (fittings).
  • Page 112 Indoor unit installation If the ceiling is extremely high, please determine the length of the installation hook depending on the real situation. 3.4.4 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 113 Indoor unit installation Hang the panel to the hooks on the mainbody. 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 114: 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 (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 4.2 Bolt pitch...

  • Page 115: 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 116 Refrigerant pipe installation Flare dimension A (mm) Pipe diameter Fl are shape 9 0 ° + - 4 1/4" (6.35) 3/8" (9.52) 12.0 12.4 R 0 . 4 ~ 0 . 8 1/2" (12.7) 15.4 15.8 5/8" (15.9) 18.6 19.1 3/4"...
  • Page 117 Refrigerant pipe installation Note: All used branch pipe must be produced by Midea, otherwise it causes malfunction. The indoor units should be installed equivalently at the both side of the U type branch pipe. Permitted Value Piping 18K+18K Total pipe length (Actual) 24K+24K L+L1+L2 30K+30K...
  • Page 118 Refrigerant pipe installation Installation...

  • Page 119: 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 120 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 121 Drainage pipe installation I n d o o r u n it M o r e t h a n 5 0 m m P lu g M o r e t h a n 2 5 m m W a t e r s t o r a g e p ip e 6.2.7 Lifting pipe setting of indoor unit with water pump ➢...
  • Page 122 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 123: Vacuum Drying And Leakage Checking

    Vacuum Drying and Leakage Checking 7. Vacuum Drying and Leakage Checking 4.1 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 124: 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 by the diameter and length of the liquid pipe between indoor and outdoor unit.

  • Page 125: 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 ➢...

  • Page 126: 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 127: 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. ➢...
  • Page 128 Electrical Control System Part 5 Electrical Control System 1. Electrical Control Function ........130 2. Troubleshooting ............141 3. Controller ..............175 Electrical Control System...
  • Page 129 Electrical Control Function 1. Electrical Control Function 1.1 Abbreviation T1: Indoor room temperature T2: Middle indoor heat exchanger coil temperature T2B: Indoor heat exchanger exhaust coil temperature T3: Outdoor heat exchanger pipe temperature T4: Outdoor ambient temperature T5: Compressor discharge temperature 1.2 Main Protection 1.2.1 Compressor Restart Delay 1.2.2 Temperature Protection of Compressor Discharge...
  • Page 130 Electrical Control Function 0： No malfunction 1：P0 Overcurrent 2：Overpressure 3：Overload 4：Over speed 5：Startup malfunction 6：Lack of phase 7：DC voltage too low 8：Communication fault 9：Parameter fault 10：L3 Current limited 11：L5 Voltage limited 12: Target speed cannot be met during the static pressure calculation process. For other models: If the indoor fan speed is lower than 300 RPM for 50 seconds or more, it shuts off and restarts in 30 seconds.
  • Page 131 Electrical Control Function 1.3 Operation Modes and Functions 1.3.1 Fan Mode (1) Outdoor fan and compressor cease operation. (2) Temperature setting function is disabled, and no preset temperature is displayed. (3) Louver operates the same as in cooling mode. (4) Auto fan: When it fan-only mode, operates the same as auto fan in cooling mode with the temperature set at 24℃.
  • Page 132 Electrical Control Function 24~60K 1.3.2.3 Indoor Fan Running Guidelines In cooling mode, the indoor fan runs continuously and You can select the following speeds: high, medium, low, auto or silent. When the compressor is running, The indoor fan is regulated as illustrated as in the following figure: Setting fan T1-Td ℃(°F)
  • Page 133 Electrical Control Function 1.3.2.4 High Condenser Coil Temperature Protection 12K/18K 24~60K O f f O f f D e c r e a s e D e c r e a s e H o l d H o l d R e s u m e I n c r e a s e s l o w l y R e s u m e...
  • Page 134 Electrical Control Function 1.3.3.2 Indoor Fan Running Guidelines In heating mode, indoor fan speed can be set at high, medium, low, or auto fan, and the anti-cold-wind function is preferential. When the compressor is running, The indoor fan is regulated as illustrated as in the following figure: Setting fan T1-Td℃...
  • Page 135 Electrical Control Function O f f T E s t o p D e c r e a s e T E d o w n H o l d T E n o r m R e s u m e Off: Compressor stops.
  • Page 136 Electrical Control Function 1.3.6.6 The timer does not change the unit operation mode. If the unit is off now, it does not start up immediately after the “timer off” function is set. When the setting time is reached, the timer LED switches ioff and the unit running mode remains unchanged.
  • Page 137 Electrical Control Function 1.3.11 Outdoor Unit Point Check Function(Excluding 12K&18K models) A check switch is included on the outdoor PCB. Push SW1 to check the unit's status while running. The digital display shows the following codes each time the SW1 is pushed. Display Remark Normal display...
  • Page 138 Electrical Control Function digits. For example, if the digital display shows “0.5", the IGBT radiator temperature is 105 ℃. If the digital display shows “1.6", the IGBT radiator temperature is 116 ℃. Indoor unit number The indoor unit can communicate with outdoor unit. General: 1, Twins: 2 Condenser pipe temperature #1 indoor...
  • Page 139 Electrical Control Function If the capacity demand is 0, the digital display shows “0”. If the indoor unit is not connected, the digital display shows: “――” Appendix Shutdown Causes Code Frequency limit caused by current Frequency limit caused by T2 in cooling Frequency limit caused by T2 in heating Preset temperature reached Frequency limit caused by T4...
  • Page 140 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 (A6 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...
  • Page 141 Troubleshooting 2.2 Indoor Unit Malfunctions Operation Lamp Malfunction Error Code Timer Lamp (flashes) Indoor EEPROM malfunction Communication malfunction between indoor and outdoor units Indoor fan speed malfunction T1 temperature sensor open or short circuit T2 temperature sensor open or short circuit Refrigerant leakage detection Water level alarm malfunction Communication error between master and slave unit (for twins system)
  • Page 142 Troubleshooting 2.3 Outdoor Unit Malfunctions For 24K~60K: Display Malfunction or Protection Communication malfunction between indoor and outdoor units Overcurrent protection Ambient temperature sensor (T4) malfunction Outdoor heat-exchanger temperature sensor (T3) malfunction Discharge temperature sensor (T5) malfunction Outdoor EEPROM malfunction Outdoor fan speed malfunction IPM module protection DC voltage too high/too low protection Ultra-low ambient temperature protection...
  • Page 143 Troubleshooting 2.4 Resolving Typical Malfunctions 2.4.1 For Indoor Units 2.4.1.1 Temperature Sensor Open or Short Circuit Malfunction conditions If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED will display the failure. Possible causes ● Wiring mistakes ●...
  • Page 144 Troubleshooting 2.4.1.3. Indoor EEPROM Malfunction Malfunction conditions Main PCB chip does not receive feedback from EEPROM chip Possible causes ● Installation mistakes ● Faulty PCB Power off, then restart the unit 2 minutes later. Does a problem remain? Replace the indoor main EEPROM: An electrically erasable programmable read-only memory whose contents can be erased and reprogrammed using a pulsed voltage.
  • Page 145 Troubleshooting 2.4.1.5. Indoor Fan Speed Malfunction Malfunction conditions When indoor fan speed continues to run at too low a speed (300RPM) for a certain period of time, the unit will stop and the LED will display a failure code. Possible causes ●...
  • Page 146 Troubleshooting DC motor voltage input and output Color Signal Voltage Vs/Vm 200V~380V Black White 13.5-16.5V Yellow 0~6.5V Blue 13.5-16.5V 2. Indoor or outdoor DC Fan Motor (control chip is in PCB) Release the UVW connector. Measure the resistance of U-V, U-W, and V-W. If the resistances are not equal to each other, the fan motor may be experiencing problems and need to be replaced.
  • Page 147 Troubleshooting 2.4.1.6. Refrigerant Leakage Detection Malfunction conditions Define the evaporator coil temperature T2 of the compressor starts running as Tcool. If the following occurs 3 times, the display shows "EC" and the unit switches off: In the first 8 minutes after the compressor starts up, if T2 ＜Tcool－2℃ is not maintained for 4 seconds and compressor running frequency is not higher than 50Hz for 3 minutes Potential causes...
  • Page 148 Troubleshooting 2.4.1.7 Outdoor IGBT sensor is faulty Check the connection between temperature Ensure proper connection sensor and PCB. Is it properly wired? Measure the resistance value of the sensor. Is it Replace the sensor within acceptable parameters? Replace outdoor main PCB 2.4.1.8 Communication malfunction between indoor and outdoor units The same as E1 in outdoor.
  • Page 149 Troubleshooting 2.4.2 Super-Slim Cassettes with an Up-Down Panel 2.4.2.1 Communication Errors between Indoor Unit and Up-Down Panel F7 D n n i t t i a a i n n i e e l w w i t t i e e l t t i n n i...
  • Page 150 Troubleshooting 2.4.3 Units 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 the other indoor unit is faulty. Check the other indoor unit’s error code and then follow the prescribed solutions to resolve the malfunction.
  • Page 151 Troubleshooting 2.4.4 Outdoor Units 2.4.4.1. Compressor Driven Chip EEPROM Malfunction Malfunction conditions Main PCB chip does not receive feedback from EEPROM chip Possible causes ● Installation mistakes ● Faulty PCB r r i h h i a a l t t i n n i m m i s s l...
  • Page 152 Troubleshooting 2.4.4.2 Compressor Speed Malfunction/ Zero Speed Protection / Synchronous Fault Protection f f l f f l t t l D D i r r i h h i s s i a a l w w i r r i h h i s s i r r l...
  • Page 153 Troubleshooting 2.4.4.3 MCE Malfunction a a l t t i n n i m m i s s l b b l t t i x x i p p l a a i Electrical Control System...
  • Page 154 Troubleshooting 2.4.4.4. E1 malfunction For 12K:: Malfunction Indoor unit does not receive feedback from outdoor unit for 110 seconds. This occurs 4 times in a row. conditions Possible causes ● Wiring mistakes ● Faulty indoor or outdoor PCB n n i m m i s s l b b l...
  • Page 155 Troubleshooting For 18-55K: Malfunction Indoor unit does not receive feedback from outdoor unit for 60 conditions seconds OR outdoor unit does not receive feedback from indoor unit for 120 seconds. Possible causes ● Wiring mistakes ● Faulty indoor or outdoor PCB d d i p p l n n i...
  • Page 156 Troubleshooting 2.4.4.5. F0 Malfunction Malfunction conditions If the outdoor current exceeds the current limit value, the LED displays a failure code. ● Wiring mistakes Possible causes ● Faulty bridge rectifier ● System blockages ● Faulty outdoor PCB Electrical Control System...
  • Page 157 Troubleshooting d d i p p l n n t o o t c c t o o f s s t o o t c c t c c t a a t s s t s s t o o l e e i s s t...
  • Page 158 Troubleshooting 2.4.4.6. F1, F2, F3 Malfunction p p l Error p p . ) ) i a a l t t i n n i w w i r r i p p . r r l p p . s s i p p .
  • Page 159 Troubleshooting 2.4.4.7. F4 Malfunction Malfunction conditions Main PCB chip does not receive feedback from EEPROM chip Possible causes ● Installation mistakes ● Faulty PCB D D i p p l a a l t t i n n i m m i s s l b b l t t i...
  • Page 160 Troubleshooting 2.4.4.9. P0 Malfunction Malfunction conditions When the voltage signal te IPM sends to compressor drive chip is not normal, the LED displays “P0” and the unit turns off. Possible causes Wiring mistakes ● Faulty IPM board ● Faulty outdoor fan assemby ●...
  • Page 161 Troubleshooting d d i p p l u u l o o t c c t s s t r r t n n i n n t p p l s s t o o l a a l e e t s s t a a l...
  • Page 162 Troubleshooting 2.4.4.10. P1 malfunction Malfunction decision An abnormal voltage rise or drop is detected by checking the conditions specified voltage detection circuit. Supposed causes Abnormal power supply Wiring mistake Faulty bridge rectifier board Faulty IPM d d i p p l o o l t t i n n i...
  • Page 163 Troubleshooting 2.4.4.11. P4 Malfunction The troubleshooting is same as the “ ” IPM module protection 2.4.4.12. J0 Malfunction When evaporator coil temperature is more than 60°C, the unit stops. It Malfunction conditions starts again only when the evaporator coil temperature is less than 54°C Faulty evaporator coil temperature sensor Possible causes...
  • Page 164 Troubleshooting 2.4.4.13. J1 Malfunction When the outdoor pipe temperature is more than 65°C, the unit stops. It Malfunction conditions starts again only when the outdoor pipe temperature is less than 52°C. Possible causes Faulty condenser temperature sensor ● Dirty heat exchanger ●...
  • Page 165 Troubleshooting 2.4.4.14. J2 Malfunction Malfunction conditions When the compressor discharge temperature (T5) is more than 115℃ for 10 seconds, the compressor will stop and not restart until T5 is less than 90℃. Possible causes Refrigerant leakage ● Wiring mistake ● Faulty discharge temperature sensor ●...
  • Page 166 Troubleshooting 2.4.4.15. J3 Malfunction Malfunction decision When the voltage signal that IPM send to compressor drive chip is abnormal, the display LED will show “J3” and AC will conditions turn off. Supposed causes Wiring mistake ● Faulty IPM board ● Faulty outdoor fan ass’y ●...
  • Page 167 Troubleshooting 2.4.4.16. J4 Malfunction t t l D D i r r i h h i p p l t t i d d i p p l p p l r r i h h i n n i a a l l p p l a a i...
  • Page 168 Troubleshooting 2.4.4.17. J5 Malfunction Malfunction conditions If the sampling voltage is not 5V, the LED displays a failure code. ● Wiring mistakes Possible causes ● Faulty overload protector ● System blockages ● Faulty outdoor PCB d d i p p l H H i t t i e e t...
  • Page 169 Troubleshooting 2.4.4.18. P6/J6 Malfunction Malfunction conditions If the sampling voltage is not 5V, the LED displays a failure code. ● Wiring mistake Possible causes ● Faulty over load protector ● System blockages ● Faulty outdoor PCB d d i p p l t t i e e l e e l...
  • Page 170 Troubleshooting 2.4.4.19. J8 malfunction Malfunction decision An abnormal voltage rise or drop is detected by checking the conditions specified voltage detection circuit. Supposed causes Abnormal power supply Wiring mistake Faulty bridge rectifier board Faulty IPM d d i p p l r r i u u t o o l...
  • Page 171 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 172 Troubleshooting Appendix 2 Unit: ℃---K Discharge temperature 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 173 Troubleshooting Appendix 3 Normal voltage of P and N 208-240V(1-phase,3-phase) 380-415V(3-phase) In standby 310VDC around around 530VDC In operation With passive PFC With partial active With fully active module PFC module PFC module >200VDC >310VDC >370VDC >450VDC Electrical Control System...
  • Page 174 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 175 Controller Buttons and functions 1. Adjust : Decrease the set temperature Keeping pressing will decrease the temp with 1℃per 0.5s. 2. Adjust : Increase the set temperature 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 176 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 TEMPERATURE( C) AUTO COOL...
  • Page 177 Controller controls into faceplate setting state and the LCD shows F2.Press the control 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 178 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 1. Adjust : Decrease the set temperature Keeping pressing will decrease the temp with 1℃per 0.5s. 2.
  • Page 179 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 180 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 181 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 182 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.
  • Page 183 Controller Electrical Control System...
  • Page 184 Controller Electrical Control System...
  • Page 185 Controller Electrical Control System...
  • Page 186 Controller Electrical Control System...

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