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MDV CTBU-09HWFN1-MC Service Manual

Light commercial mono 3d air conditioner
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Revision D: 1705, Content updated.

Table of Contents

1.
2.
Part Names And Functions
3.
4.
5.
6.
7.
8.
9.
15. Solar Panel
WARNING
Installation MUST conform with local building codes or, in the absence of local codes, with the
National Electrical Code NFPA70/ANSI C1-1993 or current edition and Canadian Electrical
Code Part1 CSA C.22.1.
The information contained in the manual is intended for use by a qualified service technician
familiar with safety procedures and equipped with the proper tools and test instruments
Installation or repairs made by unqualified persons can result in hazards to you and others.
Failure to carefully read and follow all instructions in this manual can result in equipment
malfunction, property damage, personal injury and/or death.
This service is only for service engineer to use.
Light commercial MONO 3D Air
Conditioner
SERVICE MANUAL
Model Numbers:
Indoor Unit:
CTBU-09HWFN1-M(C); CCA3U-09HRFN1-M(C); CFAU-09HRFN1-M(C)
CTBU-12HWFN1-M(C); CCA3U-12HRFN1-M(C); CFAU-12HRFN1-M(C)
CTBU-18HWFN1-M(C); CCA3U-18HRFN1-M(C); MUEU-18HRFN1-M(C)
CTBU-24HWFN1-M(C); MCD-24HRFN1-M(C); MUEU-24HRFN1-M(C);
CTB-36HWFN1-M(C); MCD-36HRFN1-M(C); MUE-36HRFN1-M(C);
CTB-48HWFN1-M(C); MCD-48HRFN1-M(D); MUE-48HRFN1-M(C);
MTI-18HWFN1-MT0W; MTIU-24HWFN1-MW; MTIU-36HWFN1-MW;
MTIU-48HWFN1-MW; MHG-60HWFN1-MW; MUE-60HRFN1-MW
Outdoor Unit:
MOB30-09HFN1-MX0W; MOB01-09HFN1-MW0W; MOB30-12HFN1-MV0W;
MOB01-12HFN1-MV0W; MOCA30-18HFN1-MT0W; MOCA01-18HFN1-MT0W;
MOD30-24HFN1-MT0W; MOD01-23HFN1-MT0W; MOBA30-09HFN1-MT0W;
MOB30-12HFN1-MT0W; MOCA31-18HFN1-MT0W; MOD31-24HFN1-MT0W;
MOD30U-36HFN1-M; MOE30U-48HFN1-M; MOE30U-60HFN1-M
Mono DC

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Summary of Contents for MDV CTBU-09HWFN1-MC

  • Page 1: Table Of Contents

    Light commercial MONO 3D Air Conditioner Mono DC SERVICE MANUAL Revision D: 1705, Content updated. Model Numbers: Table of Contents Indoor Unit: Precaution CTBU-09HWFN1-M(C); CCA3U-09HRFN1-M(C); CFAU-09HRFN1-M(C) Part Names And Functions CTBU-12HWFN1-M(C); CCA3U-12HRFN1-M(C); CFAU-12HRFN1-M(C) Dimension CTBU-18HWFN1-M(C); CCA3U-18HRFN1-M(C); MUEU-18HRFN1-M(C) Service space CTBU-24HWFN1-M(C); MCD-24HRFN1-M(C); MUEU-24HRFN1-M(C); Refrigerant Cycle Diagram CTB-36HWFN1-M(C);...
  • Page 2 CONTENTS 1. Precaution ..............................1 1.1 Safety Precaution .......................... 1 1.2 Warning ............................1 2. Part Names and Features..........................4 2.1 Model Names of Indoor/Outdoor units ..................4 2.2 Part names of Indoor/Outdoor units ....................5 2.3 Features ............................10 3.
  • Page 3 14.4 Operation Modes and Functions ....................98 16. Troubleshooting ............................. 104 16.1 Indoor Unit Error Display ......................105 16.2 Outdoor unit error display ......................106 For 9K-24K outdoor unit: ......................... 106 For 36K-60K Outdoor Unit ....................... 107 Outdoor check function........................107 16.3 Diagnosis and Solution ......................

  • Page 4: Precaution

     Be caution when unpacking and installing the product. 1. Precaution Sharp edges could cause injury, be especially careful of the case edges and the fins on the 1.1 Safety Precaution condenser and evaporator.  For installation, always contact the ...
  • Page 5   If strange sounds or smoke comes Install the drain hose to ensure that from product, turn the breaker off or water is drained away properly. disconnect the power supply cable. A bad connection may cause water leakage.  There is risk of electric shock or fire.
  • Page 6  Do not insert hands or other objects through air inlet or outlet while the product is operated.  Do not drink the water drained from the product.  Use a firm stool or ladder when cleaning or maintaining the product. Be careful and avoid personal injury.

  • Page 7: Part Names And Features

    2. Part Names and Features 2.1 Model Names of Indoor/Outdoor units Outdoor units Series Capacity Indoor units Cassette CCA3U-09HRFN1-M(C) MOB30-09HFN1-MX0W; A5 Duct CTBU-09HWFN1-M(C) MOB01-09HFN1-MW0W; MOBA30-09HFN1-MT0W Console CFAU-09HRFN1-M(C) Cassette CCA3U-12HRFN1-M(C) MOB30-12HFN1-MV0W; A5 Duct CTBU-12HWFN1-M(C) MOB01-12HFN1-MV0W; MOB30-12HFN1-MT0W; Console CFAU-12HRFN1-M(C) Cassette CCA3U-18HRFN1-M(C) MOCA30-18HFN1-MT0W; A5 Duct CTBU-18HWFN1-M(C) MOCA01-18HFN1-MT0W;...

  • Page 8: Part Names Of Indoor/Outdoor Units

    2.2 Part names of Indoor/Outdoor units Cassette Units...
  • Page 9 A5 Duct Units A6 Duct Units...
  • Page 10 Console Units...
  • Page 11 Ceiling-floor Units...
  • Page 12 HESP DUCT Units...

  • Page 13: Features

    2.3 Features 2.3.1 A5 Duct Units 2.3.1.1 Installation Accessories: (Optional)  Front Board, Canvas Air Passage, Filter, Panel, for easy installation Front Board Filter Panel 2.3.1.2 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. The size of air inlet frame from rear and bottom is same, it’s very easy to move the cover from ...
  • Page 14 2.3.1.4 Easy Maintenance  Clean the filter (Optional, standard product without filter) It is easy to draw out the filter from the indoor unit for cleaning, even the filter is installed in rear side or bottom side.  Replace the motor or centrifugal fan Remove the ventilated panel firstly.
  • Page 15 2.3.1.7 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 remoter control. ...
  • Page 16 2.3.2 Cassette Units 2.3.2.1 Lower Noise  Optimize air channel system design to ensure the maximum quietness and comfort.  Noise max down 6dB. 2.3.2.2 Turbo Mode (Optional)  Turbo function can boost cooling or heating speed in a short period, and makes the room cool down or heat up rapidly.
  • Page 17 2.3.2.6 Build-in Drain Pump  The drain pump can lift the condensing water up to 750mm upmost.  It’s convenient to install drainage piping under most space condition. 2.3.2.7Terminals For Alarm Lamp and Long-distance On-off Controller Connection Are Standard  Reserve terminals for the connection of alarm lamp and long-distance on-off controller, more human control.
  • Page 18 2.3.3 Console Units 2.3.3.1. Modern and Elegant Appearance  The simple and stylish designs can nicely harmonies with your living space. 3.2.3.2. Four Panels Pptional 2.3.3.3. Two Air-outlet Ways Cooling mode Quick Cooling To maintain room temp  Air outlet from top and bottom to make quick cooling ------When the A/C is just switched on, or room temp.
  • Page 19 Heating mode  Anti-cold air ------When the AC is just turn on, temperature of evaporator is very low, in this case, in order to prevent cold air direct blowing, only the upper louver is opened in a high position, the lower louver closed.
  • Page 20 2.3.4 Ceiling-floor Units 2.3.4.1 Two-way Installation  The rounded design of the ceiling and floor type air conditioner allows either ceiling or floor-level installation. Ceiling installation saves room space, while floor installation helps prevent the loss of warm air. 2.3.4.2 Brief Design ...
  • Page 21 2.3.4.4 Optional Drainage Pipe Connection  Both right side and left side drainage holes are available to avoid the space limitation for drainage pipe installation. Make you more convenient during installation. C Panel (LED display) D Panel 2.3.4.5 Convenience Operating and Easy Maintenance ...

  • Page 22: Dimension

    2.3.5 A6 Duct Units Higher Static Pressure 2.3.5.1.  As a ducted air conditioner with medium static pressure, it has the widest static pressure range.  The maximum static pressure reaches 160 Pa Slim Design 2.3.5.2.  The industry Lowest height is designed to be fitted into tight roof spaces. *18K unit - 210mm,24K/36K unit - 249mm,48K unit -300mm 2.3.5.3.
  • Page 23 Front Board Filter Panel Flexible Air Intake Way (Bottom side or Rear side) 2.3.5.5. The frame size of air inlet in rear and bottom is the same. It’s very easy to switch to match different  application. Air intake from bottom (Optional) Air intake from rear (Standard) 2.3.5.6.
  • Page 24 Easy Clean 2.3.5.7.  Clean the filter (Optional, standard product without filter)  It is easy to draw out the filter from the indoor unit for cleaning, even the filter is installed in rear side or bottom side.  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 25 2.3.5.9.Twins Function  The twin system connects two indoor units of the same type and capacity to one outdoor unit in order to ensure more air distribution in a large zone. The controller can only control the master unit. The slave unit will work in the same state as the master unit. 2.3.5.10.Fresh air intake function(Optional) ...
  • Page 26 2.3.6 HESP DUCT Units 2.3.6.1 High static pressure design  Max static pressure of indoor unit is 200Pa.  The longest distance of air supply is 40m, the max height of air supply is 6.5m.  Specially recommended for spacious and large rooms like large stores and factories. 2.3.6.2 Easy maintenance ...
  • Page 27  The air outlet flange is isolated from either top panel or base panel, which makes the maintenance much easier when connecting duct. 2.3.6.3 Flexible Installation  Different solutions for any shape room by using kinds of air distribution ducts. L-shaped area Areas far apart Y-shaped area...

  • Page 28: Dimension

    3. Dimension 3.1 Indoor Unit A5 Duct Units 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 ) Electric control box Fresh air intake Air filter ( optional )
  • Page 29 Cassette Units(9K, 12K, 18K) Liquid side Gas side Body Drain hole Wiring connection port ( for Service ) E-parts box 4-Screw hole (for install panel) 4-install hanger Drain pipe Fresh air intake Wiring connection port Panel...
  • Page 30 Cassette Units (24K, 36K, 48K) 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 Capacity (Btu/h) inch 6.30 2.95...
  • Page 31 Console Units Hanging arm 16 Drain pipe Unit: mm...
  • Page 32 Ceiling-floor Units (18K-60K) Wiring connection port Drain discharge port Fresh air intake Refrigerant pipe hole Hanging arm Capacity (Btu/h) 1068 18K / 24K inch 42.05 26.57 9.25 38.70 1285 1200 inch 50.59 26.57 9.25 47.24 1650 1565 48K/60K inch 64.96 26.57 9.25 61.61...
  • Page 33 A6 Duct Units 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 3.07 5.83 3.46 4.41 1100 1001 1140 inch 43.31 30.47 27.56 5.51 36.46 1.97 6.89 39.41 8.98 44.88 23.54 3.15 5.91 5.12 1360 1186...
  • Page 34 MHG-60HWFN1-MW (suspension position) 2-Φ 3.2 Φ 5 NOTE:16 groups all around(the same of the air inlet flange)

  • Page 35: Outdoor Unit

    3.2 Outdoor Unit Note: The above drawing is only for reference. The appearance of your units may be different. Model MOBA30-09HFN1-MT0W inch 30.3 11.8 21.9 33.1 19.2 11.7 MOB30-09HFN1-MX0W MOB30-12HFN1-MV0W MOB30-12HFN1-MT0W MOB01-09HFN1-MW0W inch 31.5 13.1 21.8 34.3 20.2 13.4 MOB01-12HFN1-MV0W MOCA01-18HFN1-MT0W MOCA30-18HFN1-MT0W inch...
  • Page 36 Model MOE30U-48HFN1-M 1333 1045 MOE30U-60HFN1-M inch 37.5 16.3 52.5 41.1 25.0 15.9...

  • Page 37: Service Space

    4. Service Space 4.1 Indoor Unit A5/A6 Duct Units Ensure enough space required for installation and maintenance. 200mm(7.87in) or more 300mm(11.81in) or more 600mmx600mm/23.62inx23.62in Check orifice All the indoor units reserve the hole to connect the fresh air pipe. The hole size as following Cassette Units Unit: mm...
  • Page 38 Console Units Ceiling-floor Units...

  • Page 39: Outdoor Unit

    HESP DUCT 500mm or more 600mm or more Indoor unit Maintenance and repair space 600mmx600mm 4.2 Outdoor Unit (Wall or obstacle) More than 30cm(11.81in) Air inlet More than 60cm More than 30cm (23.62in) (11.81in) Maintain channel More than 60cm Air inlet (23.62in) Air outlet More than 200cm(78.74in)

  • Page 40: Refrigerant Cycle Diagram

    5. Refrigerant Cycle Diagram MOCA30-18HFN1-MT0W, MOCA01-18HFN1-MT0W, MOD30-24HFN1-MT0W, MOD01-23HFN1-MT0W, MOD31-24HFN1-MT0W INDOOR OUTDOOR Electronic CAPILIARY TUBE expansion valve LIQUID SIDE 2-WAY VALVE T3 Condenser temp. sensor HEAT EXCHANGE (EVAPORATOR) HEAT T4 Ambient T1 Room temp. T2 Evaporator EXCHANGE temp. sensor sensor temp. sensor (CONDENSER) middle T2B Evaporator...
  • Page 41 MOD30U-36HFN1-M, MOE30U-48HFN1-M, MOE30U-60HFN1-M INDOOR OUTDOOR Electronic CAPILIARY TUBE expansion valve LIQUID SIDE 2-WAY VALVE T3 Condenser temp. sensor HEAT EXCHANGE HEAT (EVAPORATOR) T4 Ambient T1 Room temp. EXCHANGE T2 Evaporator temp. sensor sensor (CONDENSER) temp. sensor middle T2B Evaporator temp. sensor outlet GAS SIDE 4-WAY VALVE...

  • Page 42: Wiring Diagram

    6. Wiring Diagram 6.1 Indoor Unit CCA3U-09HRFN1-M(C), CCA3U-12HRFN1-M(C), CCA3U-18HRFN1-M(C),MCD-24HRFN1-M(C) CTBU-09HWFN1-M(C), CTBU-12HWFN1-M(C), CTBU-18HWFN1-M(C),CTBU-24HWFN1-M(C)
  • Page 43 CFAU-09HRFN1-M(C), CFAU-12HRFN1-M(C) MCD-36HRFN1-M(C), MCD-48HRFN1-M(D)
  • Page 44 CTBU-36HWFN1-M(C), CTBU-48HWFN1-M(C)
  • Page 45 MUEU-18HRFN1-M(C), MUEU-24HRFN1-M(C) MUE-36HRFN1-M(C)
  • Page 46 MUE-48HRFN1-M(C) MUE-60HRFN1-MW...
  • Page 47 MUE-36HRFN1-M(C),MUE-48HRFN1-M(C)
  • Page 48 MUE-60HRFN1-MW MTI-18HWFN1-MT0W, MTIU-24HWFN1-MW...
  • Page 49 MTIU-36HWFN1-MW , MTIU-48HWFN1-MW, MHG-60HWFN1-MW...

  • Page 50: Outdoor Unit

    6.2 Outdoor Unit MOB30-09HFN1-MX0W, MOB01-09HFN1-MW0W, MOB30-12HFN1-MV0W, MOB01-12HFN1-MV0W, MOCA30-18HFN1-MT0W, MOCA01-18HFN1-MT0W, MOCA31-18HFN1-MT0W, MOD31-24HFN1-MT0W...
  • Page 51 MOBA30-09HFN1-MT0W, MOB30-12HFN1-MT0W...
  • Page 52 MOD30-24HFN1-MT0W, MOD01-23HFN1-MT0W...
  • Page 53 MOD30U-36HFN1-M...
  • Page 54 MOE30U-48HFN1-M, MOE30U-60HFN1-M PCB board of MOB30-09HFN1-MX0W, MOB30-12HFN1-MV0W, MOCA30-18HFN1-MT0W, MOB01-09HFN1-MW0W, MOB01-12HFN1-MV0W, MOCA01-18HFN1-MT0W, MOCA31-18HFN1-MT0W MOD31-24HFN1-MT0W 290-330VDC standby 210-300VDC running connect to the DR module bridge connect to reactance connect to earth fuse 250V 30A [V1.8] 2015-01-16 CN22 R141 CN6-1 PTC1 DSA1 R154 N-IN R155 R153...
  • Page 55 For MOD30-24HFN1-MT0W, MOD01-23HFN1-MT0W, MOD30U-36HFN1-M Connect to the Indoor evap.pipe out temp. sensor T2B-A、T2B-B、T2B-C、T2B-D、T2B-E external drive DC fan 6 5 4 3 2 1 motor connector Electric Expansion testPort Electric Expansion Electric Expansion Electric Expansion Electric Expansion external drive DC fan external drive DC fan Value C Value E...
  • Page 56 For MOBA30-09HFN1-MT0W, MOB30-12HFN1-MT0W LED101 status light (Red) Connect to DR module FUSE1 20A/250VAC slow flicker:standby（ 0.5Hz ） Connect to reactor quick flicker:error（ 2Hz ） continuous light: normally running power supply 17122000002718 CN1A CN10 DR_N DAS1 CN3_1 connect to earth L3 L2 power supply 208-230V AC connect to the terminal...
  • Page 57 IPM board of MOD30-24HFN1-MT0W, MOD01-23HFN1-MT0W, MOD30U-36HFN1-M connect to DC fan motor TO MAIN 0VAC (standby) CN19 CN55 10-200VAC (running) EU-KFR105W/BP2T3N1-350(767).D.13.MP2-1 202302141237 IC17 IC11 R107 IC12 IPM2 R114 R111 IC16 CN57 R174 C103 R144 R147 R182 C102 R179 C101 CN57 R184 C106 R180 C105...

  • Page 58: Static Pressure

    7. Fan Curves Static Pressure ENC2 Range In. WG (Pa) Model 0.02 0.04 0.08 0.12 0.16 0-0.18 Model≤12 (10) (20) (30) (40) (0-45) 0.04 0.10 0.14 0.18 0.22 0-0.28 Model Model=18 (10) (25) (35) (45) (55) (0-70) (K Btu/h) 0.04 0.10 0.16 0.22...
  • Page 59 CTBU-09HWFN1-M(C), Code 0 Code 1 Code 2 Code 3 Code 4...
  • Page 60 CTBU-12HWFN1-M(C) Code 0 Code 1 Code 2 Code 3 Code 4...
  • Page 61 CTBU-18HWFN1-M(C) Code 0 Code 1 Code 2 Code 3 Code 4...
  • Page 62 CTBU-24HWFN1-M(C) Code 0 Code 1 Code 2 Code 3 Code 4...
  • Page 63 CTB-36HWFN1-M(C) Code 0 Code 1 Code 2 Code 3 Code 4...
  • Page 64 CTB-48HWFN1-M(C) Code 0 Code 1 Code 2 Code 3 Code 4...
  • Page 65 MHG-60HWFN1-MW High Speed Maximum rpm(switch 4) Minimum rpm(switch 0) 1800 2300 2800 3300 3800 Air volume(m3/h) Low Speed Maximum rpm(switch 4) Minimum rpm(switch 0) 1800 2300 2800 3300 3800 Air volume(m3/h)

  • Page 66: Electric Characteristics

    8 Electric Characteristics Indoor Unit Model Voltage Min. Max. CCA3U-09HRFN1-M(C) 208-230V 187V 253V CTBU-09HWFN1-M(C) 208-230V 187V 253V CFAU-09HRFN1-M(C) 208-230V 187V 253V CCA3U-12HRFN1-M(C) 208-230V 187V 253V CTBU-12HWFN1-M(C) 208-230V 187V 253V CFAU-12HRFN1-M(C) 208-230V 187V 253V CCA3U-18HRFN1-M(C) 208-230V 187V 253V CTBU-18HWFN1-M(C) 208-230V 187V 253V MUEU-18HRFN1-M(C) 208-230V...

  • Page 67: Sound Level

    9 Sound Level 9.1 Indoor unit Concealed Duct Type Discharge Suction Duct Duct 1.4m Microphone Noise level dB(A) Model CTBU-09HWFN1-M(C) CTBU-12HWFN1-M(C) CTBU-18HWFN1-M(C) CTBU-24HWFN1-M(C) CTBU-36HWFN1-M(C) CTBU-48HWFN1-M(C) MTI-18HWFN1-MT0W MTIU-24HWFN1-MW MTIU-36HWFN1-MW MTIU-48HWFN1-MW MHG-60HWFN1-MW...
  • Page 68 1.4m Microphone Noise level dB(A) Model CCA3U-09HRFN1-M(C) CCA3U-12HRFN1-M(C) CCA3U-18HRFN1-M(C) MCD-24HRFN1-M(C) MCD-36HRFN1-M(C) MCD-48HRFN1-M(C)
  • Page 69 Microphone 1.5m Noise level dB(A) Model CFAU-09HRFN1-M(C) CFAU-12HRFN1-M(C) Microphone 1 . 5 m Air outlet side Microphone Noise level dB(A) Model MUBU-18HRFN1-M(C) MUEU-24HRFN1-M(C) MUE-36HRFN1-M(C) MUE-48HRFN1-M(C) MUE-60HRFN1-MW...

  • Page 70: Outdoor Unit

    9.2 Outdoor unit Outdoor Unit Microphone 1.0m Note: H= 0.5 × height of outdoor unit Model Noise Level dB(A) MOB30-09HFN1-MX0W MOB01-09HFN1-MW0W MOBA30-09HFN1-MT0W MOB30-12HFN1-MT0W MOB30-12HFN1-MV0W MOB01-12HFN1-MV0W MOCA30-18HFN1-MT0W MOCA01-18HFN1-MT0W MOCA31-18HFN1-MT0W MOD30-24HFN1-MT0W MOD01-23HFN1-MT0W MOD31-24HFN1-MT0W MOD30U-36HFN1-M MOE30U-48HFN1-M MOE30U-60HFN1-M...

  • Page 71: Accessories

    10 Accessories Duct Units Name Shape Quantity Soundproof / insulation sheath Tubing & Fittings Binding tape Seal sponge Drain joint Drainpipe Fittings (for cooling & heating) Seal ring Wired controller & Its Frame Wired controller Owner's manual Others Installation manual Magnetic ring (twist the electric wires L EMS &...
  • Page 72 Mounting screw(ST2.9×10-C-H) Remote controller manual Alkaline dry batteries (AM4) Owner's manual Others Installation manual Installation accessory Expansible hook (The product you have might not be provided the Installation hook following accessories Orifice Console Units Name Shape Quantity Installation fittings Hook Remote controller Frame Remote controller &...

  • Page 73: The Specification Of Power

    11. The Specification of Power Type 9K-18K Phase 1-phase 1-phase Power Frequency and Voltage 208-230V, 60Hz 208-230V, 60Hz Circuit Breaker/ Fuse (A) 25/20 25/20 Indoor Unit Power Wiring 3-core cable 3-core cable Outdoor Unit Power Wiring (14AWG) (14AWG) Indoor/Outdoor Connecting Wiring 4-core cable 4-core cable Strong Electric Signal...
  • Page 74 12 Field Wiring 36K, 48K...

  • Page 75: Installation Details

    blockage of the heat exchanger in the 12 Installation Details outdoor unit.  If is built over the unit to prevent direct sunlight, rain exposure, direct strong wend, Location selection snow and other scraps accumulation, make Indoor unit location selection 12.1.1 sure that heat radiation from the condenser ...
  • Page 76 people to lift and secure it. Insert suspension 1180 CTB-36HWFN1-M(C) bolts into the unit’s hanging holes. Fasten 46.46 19.29 1240 them using the washers and nuts provided. CTB-48HWFN1-M(C) 48.82 19.69 MTI-18HWFN1-MT0W 36.22 1140 MTIU-24HWFN1-MW 44.88 23.54 1400 MTIU-36HWFN1-MW 55.12 23.54 1240 MTIU-48HWFN1-MW 18 48.82...
  • Page 77 The capacity of the indoor unit has been set in the factory according to the below table. 5.Please refer to the following static pressure to ENC1 Toggle switch Code Capacity(kw) install. Note: The Model Static Pressure(Pa) capacity has CTBU-09HWFN1-M(C) 0-45 been set in the CTBU-12HWFN1-M(C) factory, anyone...
  • Page 78 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. 2.Change the mounting positions of ventilation panel and air return flange . 3.
  • Page 79 12.2.2.3 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. Then 12.2.2 Compact cassette indoor unit embed the expansible hooks (fittings).
  • Page 80 Adjust the position to ensure the gaps between the body and the four sides of ceiling are even. The body's lower part should sink into the ceiling for 10~12 mm. In general, L is half of the screw length of the installation hook. Tighten the screws under the panel hooks till the panel closely stick on the ceiling to avoid condensate water.
  • Page 81 12.2.3.2 Install the main body  Fix the hook with tapping screw onto the wall Capacity (Btu/h) 18K / 24K inch 38.70 8.66  Hang the indoor unit on the hook. 1200 (The bottom of body can touch with floor or inch 47.24 8.66...
  • Page 82 12.2.4.4 Install the main body ② Wall-mounted installation ① Ceiling installation (The only installation Hang the indoor unit by insert the tapping method for the unit with drain pump) screws into the hanging arms on the main unit. Remove the side board and the grille. (The bottom of body can touch with floor or suspended, but the body must install vertically.) 12.2.5...
  • Page 83 >275 Adjust the position to ensure the gaps between inch 9.65 >10.83 the body and the four sides of ceiling are even. >317 The body's lower part should sink into the inch 11.30 >12.48 ceiling for 10~12 mm. In general, L is half of the screw length of the installation hook.
  • Page 84 Note: The panel shall be installed after the wiring connected. Hang the panel to the hooks on the mainbody. If 12.2.6 HESP duct indoor unit installation the panel is with auto-lift grille, please watch the 12.2.6.1 Service space for indoor unit ropes lifing the grille, DO NOT make the ropes enwinded or blocked.

  • Page 85: Outdoor Unit Installation

    12.3 Outdoor unit installation 12.3.1 Service space for outdoor unit (Wall or obstacle) More than 30cm(11.81in) Air inlet More than 30cm (11.81in) Maintain channel Install the main body More than 60cm Air inlet (23.62in) Make the 4 suspender through the 4 hanger of Air outlet More than 200cm(78.74in) the main body to suspend it.

  • Page 86: Refrigerant Pipe Installation

    Do not lean it more than 45, and do not lay it sidelong. Make concrete foundation according to the Lean Crude Burr specifications of the outdoor units. Fasten the feet of this unit with bolts firmly to prevent it from collapsing in case of earthquake or strong wind.
  • Page 87  For horizontal refrigerant pipe, the distance between supporters should not be exceed  For vertical refrigerant pipe, the distance between supporters should not be exceed 1.5m. 13. Connect the pipe to indoor unit and outdoor unit by using two spanners. ...
  • Page 88 2. Air Purging Using Refrigerant Procedure 1). Connect the charge hose to the 3-way Procedure: service port and open the 2-way and 3-way 1). Confirm that both the 2-way and 3-way valve. valves are set to the closed position. Connect the charge hose to the valve at the 2).
  • Page 89 Procedure Procedure: 1). Confirm that both the 2-way and 3-way 1). Confirm that both the 2-way and 3-way valves are open. valves are closed. Remove the valve stem caps and confirm that 2). Connect the charge set and a charging the valve stems are open.

  • Page 90: Drainage Pipe Installation

    the check valve on the charge set (be careful of the liquid refrigerant). 3) Place the charging cylinder onto the electronic scale and record the weight. 4). Open the valves (Low side) on the charge set and charge the system with liquid refrigerant If the system cannot be charged with the specified amount of refrigerant, or can be charged with a only a small amount at a time...
  • Page 91 intersection with other pipelines and ensure for confluence PVC50 1440 pipe slope is straight. PVC63 2760 Drainage pipe selection PVC75 5710  The drainage pipe diameter shall not small PVC90 8280 than the drain hose of indoor unit Attention: Adopt PVC40 or bigger pipe to be the ...
  • Page 92  The false installation will cause converse Blowhole water flow and the slope of the branch pipe Indoor unit Indoor unit cannot be adjusted. Plug Plug Water storage pipe setting  If the indoor unit has high extra static pressure and without water pump to elevate the condensate water, such as high extra static pressure duct unit , the water storage pipe should be set to avoid...

  • Page 93: Vacuum Drying And Leakage Checking

    Continuously infusing water until water level alarmed, check whether the drainage pump could discharge water at once. If water level does not decline under warning water level 3 minutes later, it shall cause shutdown of unit. When this situation happens, the normal startup only can be recovered by turning down power supply and eliminating accumulated water.

  • Page 94: Additional Refrigerant Charge

    namely ordinary vacuum drying and special Procedures of special vacuum drying are as vacuum drying. follows:  Vacuum drying for 1 hour. Ordinary vacuum drying  Vacuum damage, filling nitrogen to reach  When conduct first vacuum drying, 0.5Kgf/cm2 . connect pressure gauge to the infusing Because nitrogen is dry gas, vacuum mouth of gas pipe and liquid pipe, and...

  • Page 95: Engineering Of Insulation

      Refrigerant may only be charged after The burning performance should over performed the vacuum drying process. 120℃  Always use gloves and glasses to protect  According to the local law to choose your hands and eyes during the charge insulation materials ...

  • Page 96: Engineering Of Electrical Wiring

     Do not use metal wire tube at the place with The temperature of condensate drainage water acid or alkali corrosion, adopt plastic wire is very low. If insulation is not enough, it shall tube to replace it. form dew and cause leakage to damage the ...
  • Page 97  Whether the drainage is normal.  Whether there is vibration or abnormal noise during operation. Outdoor unit  Whether there is vibration or abnormal noise during operation.  Whether the generated wind, noise, or condensed of by the air conditioner have influenced your neighborhood.

  • Page 98: Operation Characteristics

    13. Operation Characteristics Temperature Cooling operation Heating operation Drying operation Mode 0℃～30℃ 10℃～32℃ Room temperature 17℃～32℃(62℉～90℉) (32℉～86℉) (50℉～90℉) 0℃～50℃ (32℉～122℉) Outdoor temperature -15℃～30℃ （-15℃～50℃(5℉～122℉)：For (Entry level) (5℉～86℉) the models with low temperature 0℃～50℃ cooling system） (32℉～122℉) Outdoor temperature -25℃～30℃ -25℃～50℃(-13℉～122℉) (E-Star level) (-13℉～86℉) Outdoor temperature...

  • Page 99: Electronic Function

    14. Electronic Function 14.1 Abbreviation T1: Indoor room temperature T2: Coil temperature of indoor heat exchanger middle. 14.2.1 Icon explanation on indoor display board T2B: Coil temperature of indoor heat exchanger (Ceiling Floor) outlet. T3: Coil temperature of condenser T4: Outdoor ambient temperature T5: Compressor discharge temperature Td: Target temperature 14.2 Display function...
  • Page 100 off and restart 30s later, if protection happened The Inverter module has a protection function 3 times when fan motor restarts continuously, about current, voltage and temperature. If these the unit will stop and the LED will display the protections happen, the corresponding code failure.

  • Page 101: Operation Modes And Functions

    ---4°C(39.2°F)≤T2≤7°C(44.6°F), Setting fan T1-Td ℃(° F) Actual fan speed speed compressor will keep the current frequency. H+(H+=H+G) 4.5(8.1) ---T2>7° C(44.6° F), the compressor frequency H（=H） 3.0(5.4) will not be limited. 1.5(2.7) H-（H-=H-G) M+(M+=M+Z) 4.5(8.1) M(M=M) 3.0(5.4) 14.4 Operation Modes and Functions M-(M-=M-Z) 1.5(2.7) L+(L+=L+D)
  • Page 102 T1-Td+1.5° C(34.7° F) 0.0° C(0° F) (H+-L)*0.2+L -1° C(-1.8° F) TEstop (H+-L)*0.4+L -2° C(-3.6° F) Decrease TEdown -3° C(-5.4° F) (H+-L)*0.6+L -4° C(-7.2° F) Hold (H+-L)*0.8+L TEH2 -5° C(-9° F) Resume -6° C(-10.8° F) -6.5° C(-11.7° F) 14.4.3.3 Defrosting mode Off: Compressor stops.
  • Page 103 14.4.6.1 Timing range is 24 hours. failure, the module memorizes the setting 14.4.6.2 Timer on. The machine will turn on conditions before the power failure. The unit will automatically when reaching the setting time. resume the previous operation setting (not 14.4.6.3 Timer off.
  • Page 104 14.4.11 Drain pump control Adopt the water-level switch to control the action of drain pump. Main action under different condition :( every 5 seconds the system will check the water level one time) 1. When the A/C operates with cooling (including auto cooling), dehumidifying, and forced cooling mode, the pump will start running immediately and continuously, till stop...
  • Page 105 14.4.12 Point check function Press the LED DISPLAY or LED or MUTE button of the remote controller three times, and then press the AIR DIRECTION or SWING button three times in ten seconds, the buzzer will keep ring for two seconds.
  • Page 106 Enquiry Display value Meaning Remark information T1,T2,T3,T4, -1F,-1E,-1d,-1c,- -25,-24,-23,-22,-21,-2 1. All the displaying temperature is actual T2B,TP,TH, 1b,-1A value. Targeted -19—99 -19—99 2. All the temperature is ° C no matter what A0,A1,…A9 100,101,…109 Frequency, kind of remote controller is used. b0,b1,…b9 110,111,…119 Actual...

  • Page 107: Troubleshooting

    16. Troubleshooting Safety Electricity is stored in capacitors, even when the power supply is shut off. Do not forget to discharge the electricity in the capacitors. Electrolytic Capacitors (HIGH VOLTAGE! CAUTION!) For other models, For other models, connect a discharge resistor (approx.100Ω 40W) or a soldering iron plug between the + and - terminals of the electrolytic capacitor on the opposite side of the outdoor printed circuit board (PCB).

  • Page 108: Indoor Unit Error Display

    16.1 Indoor Unit Error Display Operation Timer lamp Display LED STATUS lamp ☆ 1 time Indoor unit EEPROM parameter error Communication malfunction between indoor and ☆ 2 times outdoor units ☆ 4 times Indoor fan speed malfunction ☆ 5 times Indoor room temperature sensor (T1 ) malfunction ☆...

  • Page 109: Outdoor Unit Error Display

    16.2 Outdoor unit error display For 9K-24K outdoor unit: LED2 LED1 Problems IU display (Green) (Red) standby for normal Operation normally ☆ Compressor drive board EEPROM error ☆ IPM malfunction or IGBT over-strong current protection Over voltage or too low voltage protection ☆...

  • Page 110: For 36K-60K Outdoor Unit

    For 36K-60K Outdoor Unit Problems Error Code Communication malfunction between indoor and outdoor units Current overload protection Outdoor ambient temperature sensor (T4 ) malfunction Condenser coil temperature sensor (T3) malfunction Compressor discharge temperature sensor (T5) malfunction Outdoor unit EEPROM parameter error Outdoor fan speed malfunction Inverter module (IPM) malfunction Over-voltage or under-voltage protection...
  • Page 111 will show “-9”.If the temp. is higher than 70 degree, the digital display tube will show “70”. If the indoor unit is not Outdoor ambient temp.(T4) connected, the digital display tube will show: “――” The display value is between 13~129 degree. If the temp. is lower than 13 degree, the digital display tube will show “13”.If the temp.
  • Page 112 connected, the digital display tube will show: “――” Actual data*HP*10 1# Indoor unit capacity demand code If capacity demand code is higher than 99, the digital display tube will show single digit and tens digit. (For example, the digital display tube show “5.0”,it means the capacity demand 2# Indoor unit capacity demand code is 15.

  • Page 113: Diagnosis And Solution

    16.3 Diagnosis and Solution 16.3.1 EEPROM parameter error diagnosis and solution (E0/F4) E0/F4 Error Code Malfunction conditions Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip. Potential causes Installation mistake ● Faulty PCB ● Trouble shooting: Power off, then restart the unit 2 minutes later.
  • Page 114 16.3.2 Communication malfunction between indoor and outdoor units diagnosis and solution (E1) For 9K-24K: Error Code Malfunction conditions If the indoor unit does not receive feedback from outdoor unit for 110 seconds 4 consecutive times. Potential causes Wiring mistake ● Faulty indoor or outdoor PCB ●...
  • Page 115 Remark: Use a multimeter to test the DC voltage between 2 port and 3 port of outdoor unit. The red pin of multimeter connects with 2 port while the black pin is for 3 port. When AC is normal running, the voltage will move alternately between -50V to 50V.
  • Page 116 For 36K-48K: 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. ● Wiring mistakes Possible causes ● Faulty indoor or outdoor PCB E1 displayed E1 displayed Communication malfunction between indoor...
  • Page 117 16.3.3 Fan speed malfunction diagnosis and solution (E3) Error Code Malfunction conditions When indoor fan speed is too low (300RPM) for a certain period of time, the unit ceases operation and the LED displays a failure code. Potential Causes Wiring mistake ●...
  • Page 118 Index 1: 1. Indoor DC fan motor (Control Chip is in Fan Motor) Turn power on and while the unit is on standby, measure the voltage between pin1 and pin3 as well as between pin4 and pin3 in fan motor connector. If the value of the voltage is not within the range shown in the following table, the PCB may be experiencing problems and need to be replaced.
  • Page 119 16.3.4 Open or short circuit of temperature sensor diagnosis and solution (E4/E5/F1/F2/F3) Error Code E4/E5/F1/F2/F3 Malfunction conditions If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED displays a failure. Potential causes Wiring mistake ● Faulty sensor ●...
  • Page 120 16.3.5 Refrigerant Leakage Detection diagnosis and solution (EC) Error Code 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 ＜...
  • Page 121 Water-level alarm malfunction 16.3.6 diagnosis and solution Error Code Malfunction conditions If the sampling voltage is not 5V, the LED will display the failure code. ● Wiring mistakes Possible causes ● Faulty water-level switch ● Faulty water pump ● Faulty indoor PCB Power off, then restart the unit 3 minutes Power off, then restart the unit 3 minutes later.
  • Page 122 16.3.7 IPM malfunction or IGBT over-strong current protection diagnosis and solution (P0) Error Code Malfunction When the voltage signal the IPM sends to the compressor drive conditions chip is abnormal, the display LED shows “P0” and the AC turn off. Possible causes Wiring mistake ●...
  • Page 125 16.3.8 Over-voltage or under-voltage protection diagnosis and solution (P1) Error Code Malfunction conditions Abnormal increases or decreases in voltage are detected by checking the specified voltage detection circuit. Potential causes Power supply issues ● System leakage or blockage ● Faulty PCB ●...
  • Page 126 16.3.9 High temperature protection of compressor top diagnosis and solution (P2) Error Code Malfunction decision If the sampling voltage is not 5V, the LED will display the failure. conditions Power supply problems. ● Supposed causes System leakage or block ● PCB faulty ●...
  • Page 127 High temperature protection of IPM board diagnosis and solution (P2) High temperature protection of IPM High temperature protection of IPM board board Check whether the radiator Check whether the radiator Fix the radiator well Fix the radiator well is fixed well ? is fixed well ? Check whether electronic Check whether electronic...
  • Page 128 16.3.10 Inverter compressor drive error diagnosis and solution(P4) Error Code Malfunction conditions Abnormalities in the inverter compressor drive is detected by a special detection circuit, which can perform communication signal detection, voltage detection, and compressor rotation speed signal detection. Potential causes Wiring mistake ●...
  • Page 129 16.3.11 Outdoor IPM module temperature sensor malfunction diagnosis and solution (P7) Error Code Malfunction conditions If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED displays a failure. Potential causes Wiring mistake ● Faulty sensor ● Faulty PCB ●...
  • Page 130 16.3.12. J0 Malfunction Malfunction conditions When evaporator coil temperature is more than 60° C, the unit stops. It starts again only when the evaporator coil temperature is less than 54° C  Possible causes Faulty evaporator coil temperature sensor  Dirty heat exchanger ...
  • Page 131 16.3.13. J1 Malfunction Malfunction conditions When the outdoor pipe temperature is more than 65° C, the unit stops. It starts again only when the outdoor pipe temperature is less than 52° C. Possible causes ● Faulty condenser temperature sensor ● Dirty heat exchanger ●...
  • Page 132 16.3.14. 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℃. ● Refrigerant leakage Possible causes ● Wiring mistake ● Faulty discharge temperature sensor ●...
  • Page 133 16.3.15. J3 Malfunction Malfunction decision conditions When the voltage signal that IPM send to compressor drive chip is abnormal, the display LED will show “P6” and AC will turn off. ● Wiring mistake Supposed causes ● Faulty IPM board ● Faulty outdoor fan ass’y ●...
  • Page 134 16.3.16. J4 Malfunction J4 displayed J4 displayed Communication error between outdoor main Communication error between outdoor main chip and compressor driven chip chip and compressor driven chip Is there at least one LED in the Is there at least one LED in the compressor driven chip light? compressor driven chip light? Check the signal wire between the...
  • Page 135 16.3.17. J5 Malfunction Malfunction conditions If the sampling voltage is not 5V, the LED displays a failure code. ● Possible causes Wiring mistakes ● Faulty overload protector ● System blockages ● Faulty outdoor PCB J5 displayed J5 displayed High pressure protection High pressure protection Are the high pressure Connect high pressure...
  • Page 136 16.3.18. J6 Malfunction Malfunction conditions If the sampling voltage is not 5V, the LED displays a failure code. ● Possible causes Wiring mistake ● Faulty over load protector ● System blockages ● Faulty outdoor PCB J6 displayed J6 displayed Low pressure protection Low pressure protection Reconnect the low pressure Reconnect the low pressure...
  • Page 137 16.3.19. J8 malfunction Malfunction decision An abnormal voltage rise or drop is detected by checking the specified conditions voltage detection circuit.  Supposed causes Abnormal power supply  Wiring mistake  Faulty bridge rectifier  Faulty IPM board...
  • Page 138 J8 display J8 display AC power input voltage AC power input voltage protection 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 139: Main Parts Check

    16.4 Main parts check 1. Temperature sensor checking Disconnect the temperature sensor from PCB, measure the resistance value with a tester. Temperature Sensors. Room temp.(T1) sensor, Indoor coil temp.(T2) sensor, Outdoor coil temp.(T3) sensor, Outdoor ambient temp.(T4) sensor, Compressor discharge temp.(T5) sensor. Measure the resistance value of each winding by using the multi-meter.
  • Page 140 Appendix 1 Temperature Sensor Resistance Value Table for T1,T2,T3,T4 (℃--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 11.5 2.19073 0.59386 96.3423 10.9731 2.11241 0.57683 89.5865...
  • Page 142 Appendix 2 Temperature Sensor Resistance Value Table for T5,TH (℃--K) ℃ ℉ ℃ ℉ ℃ ℉ ℃ ℉ K Ohm K Ohm K Ohm K Ohm 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...
  • Page 143 Appendix 3: ℃ 10 11 12 13 14 15 16 17 18 19 20 21 22 ℉ 48 50 52 54 56 58 60 62 64 66 68 70 72 ℃ 23 24 25 26 27 28 29 30 31 32 33 34 35 ℉...
  • Page 144 2. Compressor checking Measure the resistance value of each winding by using the tester. Position Resistance Value ASN98D22UFZ ASM135D23UFZ ATF235D22UMT ATF250D22UMT ATF310D43UMT ATQ420D1UMU ATM115D43UFZ2 Blue - Blue - 1.57Ω 1.75 Ω 0.75 Ω 0.75 Ω 0.65 Ω 0.38Ω 1.87Ω Black Red - Blue...
  • Page 145 3. IPM continuity check Turn off the power, let the large capacity electrolytic capacitors discharge completely, and dismount the IPM. Use a digital tester to measure the resistance between P and UVWN; UVW and N. Digital tester Normal resistance value Digital tester Normal resistance value (+)Red...
  • Page 146 Heating Chart: HEATING MODE Outdoor temp. ℉ Indoor (℃) Temp. 57 (13.89) 47 (8.33) 37 (2.78) (-2.78) (-8.33) 30.3 28.5 25.3 22.8 20.8 32.5 30.0 26.6 25.4 23.3 33.8 31.5 27.8 26.3 24.9 3.03 2.85 2.53 2.28 2.08 3.25 3.00 2.66 2.54 2.33...

  • Page 147: Disassembly Instructions

    17. Disassembly Instructions Note: This part is for reference, the photos may have slight difference with your machine. 17.1 Indoor unit  A5 Duct Unit Parts name Procedures Remarks Remove the 1) Screw off the screws to electronic remove the cover of control box electronic control box Four screws...
  • Page 148 3）Move the display board according to the arrow direction to disassemble Remove the 1) Remove the cover of Repeat the operation of step1 of No1 electronic control box Pull out all the plugs or connectors connected to the PCB and remove the ground wire after remove the screw.
  • Page 149 Remover 1) Screw off the fixing the fan screws to remove the motor rear cover board Rear cover board 5 screws 2) Screw off the fixing screws to remove the Rear beam rear beam Total four screws at the left side and right side 3) Remove room Cut off the fastening temperature sensor...
  • Page 150 Remove the 1) Remove the rear cover Repeat the operation of step1 of No.5 water board collector 2) Screw off the screws to 4 screws assembly remove the water collector assembly 3 screws 3 screws 3 screws Water collector assembly Remove the 1) Remove the water Repeat the operation of No.6...
  • Page 151 4) Remove the evaporator support board 4 screws 5) Screw off the fixing screws to remove the evaporator 1 screw...
  • Page 152  Cassette Unit Parts name Procedures Remarks Remove the 3) Open the grille filter Grill switch 4) Remove the filter Note: the filter is easy to be damaged, be careful when removing it. Remove the 4) Open the grille Repeat the operation of step1 of No.1 panel 5) Remove the grille ...
  • Page 153 board cover(4 screws)  Remove the display board(4 screws) 4 screws Remove the 1) Remove the panel Repeat the operation of step1,2,3 of No.2 swing 2) Screw off 3 screws to motor remove the swing motor assy. 3 screws 3) Screw off 1 screws to remove the swing motor.
  • Page 154 3) Pull out all the Indoor fan Pump Water lever Temp. sensors connection wires to other parts, then the PCB can be replaced. Swing motor Power Input Display board 4) There are 2 buckles fixing the PCB. To draw out the PCB, you should open them.
  • Page 155 3) Remove the fixing nut to disassemble the fan wheel 4) Pull out the fan wheel Remove the 1) Repeat the operation of fan motor No.6 2) Remove the fixing board of fan motor wire 3 nuts 3) Remove the 5 screws to disassemble the fan motor 5 screws...
  • Page 156 assembly 8) Screw off the 4 screws inside 4 holes (1 is under a protection cover) to remove the water collecting assembly. 9) Take out the water collecting assembly Remove the 1) Remove the panel Repeat the operation of No.2 draining 2) Remove the electronic Repeat the operation of No.6...
  • Page 157 6) There are 2 screws under the supporter to fixing the pump. Release them to take the pump out of the supporter. Remove the 1) Remove the water Repeat the operation of No.9 evaporator collecting assembly 2) Remove the seal board of evaporator 3 screws 3) Remove the evaporator...
  • Page 158  Console Unit No. Parts Procedures Remarks name push push Remove 4) Slide the two the Filter stoppers on the left and right sides to open the front panel 5) Remove the filter.  Open the front panel Remove 4) Remove the air Repeat the operation of step1 of No.1 front panel ...
  • Page 159 7) Remove the installation plate of electric parts 8) Remove the fixing board of electronic control box 9) Disconnect the DC motor wire, 2 louver motor Louver motor connector wires, evaporator coil Screws of the grounding wire temperature sensor(T2) wire, Louver motor connector and two DC motor connector...
  • Page 160 7) Disconnect all the wires of plugs connected to the PCB 8) Remove two fixing screws to remove the PCB 2 screws Remove 1) Remove the Repeat the operation of step1~step of No2. the display electronic board control box 2) Remove the fixing glue to remove the display board...
  • Page 161 2) Remove the 1 fixing screw to remove air outlet grille 1 screw assembly 3) Disconnect louver motor wire Repeat the operation of No.7 to remove the air outlet grille Remove 1) Remove the air assembly the louver outlet grille motor of assembly air outlet...
  • Page 162 4) Disconnect louver motor wire Louver motor connector 5) Remove 4 fixing screws to disassemble the water collector 4 screws Repeat the operation of No.2 to remove the electronic control Remove 1) Remove the electronic evaporator control box Repeat the operation of No.7 to remove the air outlet grille assembly 2) Remove the air assembly...
  • Page 163 4) Remove the evaporator assembly Repeat the operation of No.2 to remove the electronic control Remove 1) Remove the electronic centrifugal control box Repeat the operation of No.7 to remove the air outlet grille 2) Remove the air assembly outlet grille assembly 3) Remove four fixing screws to...
  • Page 164  A6 Duct Unit Parts name Procedures Remarks Remove the 6) Screw off the screws to electronic remove the cover of control box electronic control box Five screws 7) Disconnect the fan motor Plug of room temperate sensor wire, room temperature and evaporator sensor wire and temperature sensor...
  • Page 165 10) Remove the PCB from the electronic control Press the two fixing holders to remove the Remove the 6) Remove the cover of Repeat the operation of step1 of No1 reactance electronic control box 7) Disconnect the reactance wire Reactance wire 8) Screw off the screw to remover it...
  • Page 166 Remover 9) Screw off the fixing the fan screws to remove the motor rear cover board 10 screws Rear cover board 10) Remove the volute shell Press Press the clips to take off the volute shell 11) Remove the fan motor Refer the operation of step2 of No.1 wire from the electronic control box...
  • Page 167 Water collector assembly Remove the 10) Remove the water Repeat the operation of No.6 evaporator collector 11) Remove the evaporator sensor Evaporator sensor 12) Remove the pipe clamp board 2 screws 13) Remove the evaporator support board 4 screws 14) Screw off the fixing screws to remove the evaporator 1 screw...

  • Page 168: Outdoor Unit

    17.2 Outdoor unit  MOB01-09HFN1-MW0W, MOB01-12HFN1-MV0W Part name Procedures Remarks Panel plate How to remove the panel plate. 1)Stop operation of the air conditioner and turn “OFF” the power breaker. 2) Remove the big handle Screws of top panel(3 screws,1 screws is under the big handle) first,then remove the top cover (3 screws) 3 screw of...
  • Page 169 Fan ass’y Electronic control box 1)After remove the panel plate following procedure 1 reactor Compressor and liquid-gas separator 2) Remove the nut fixing the fan,and remove the ○ fan. ○ 3) Unfix the hooks and then open the electronic control box cover.
  • Page 170 4) Disconnect the connector for fan motor from the electronic control board. ○ 5) Remove the four fixing screws of the fan motor, ○ then remove the motor.
  • Page 171 Electrical How to remove the parts electrical parts. After finish work of ○ item 1 and item 2, remove the two connectors for the compressor and the reactors. ○ Pull out the two blue wires connected with the four way valve. ○...
  • Page 172 heater connector. ○ 5) Disconnect the ○ electronic expansion valve wire from the control board ○ ○ 6) Remove the ground wires . 7) Remove the power supply wires(old label, L1,L2,S, new label 1,2,3). 8) Then remove the electronic control box.
  • Page 173 Four-way How to remove the valve The picture of four-way valve may be different from four-way valve. the one on your side. Perform work of item 错误! ○ 1,2,3. Recover refrigerant from the refrigerant circuit. Remove the screw of the coil and then remove the coil.
  • Page 174  MOCA01-18HFN1-MT0W Part name Procedures Remarks Panel plate How to remove the panel plate. 4 screws of top panel 1) Stop operation of 3 screws of the air conditioner and turn big handle “OFF” the power breaker. 9 screws of front panel 2) Remove the top panel(7 ○...
  • Page 175 ○ 1) After remove the panel plate following procedure 1, remove the hex nut fixing the fan and then remove the fan. ○ 2) Unfix the hooks and then open the electronic control box cover. Compressor wire T3,T4,T5 sensor wire Motor wire Electronic expansion valve Electric pipe heater and Crankcase electric heater...
  • Page 176 connector for fan motor from the electronic control board. ○ 4) Remove the four fixing screws of the fan motor. 5) Then remove the fan motor. Electrical How to remove the ○ parts electrical parts. 1) After finish work of item 1 and item 2, remove the connectors for the compressor and reactor.
  • Page 177 four way valve. ○ ○ 3) Pull out connectors of the compressor top temp. sensor, condenser coil temp. sensor(T3),outdoor ambient temp. sensor(T4) and discharge temp. sensor(T5). ○ 4) disconnect the electronic expansion valve wire 5) remove the compressor ○ Crankcase electric heater...
  • Page 178 6) Remove the grounding screw. 7) Remove the power 错误! supply wires(old label, L1,L2,S; new label 1,2,3). 8) Then remove the electronic control box. ○...
  • Page 179 Four-way How to remove the valve The picture of four-way valve may be different from four-way valve. the one on your side. 1) Perform work of ○ item1,2,3. 2) Recover refrigerant from the refrigerant circuit. 3) Remove the screw of the coil and then remove the coil.
  • Page 180  MOD01-23HFN1-MT0W Part name Procedures Remarks Panel plate How to remove the panel 3 screws of top panel plate. 1) Stop operation of the air conditioner and turn “OFF” the power breaker. 4 screws of big handle 11 screws of front panel ○...
  • Page 181 ○ 1) After remove the panel plate following procedure 1, remove the hex nut fixing the fan and then remove the fan. ○ 2) Unfix the hooks and screws,then open the electronic control box cover. Compressor wire T3,T4,T5 sensor wire 4 way valve Electric pipe heater Electronic expansion...
  • Page 182 ○ Remove the four fixing screws of the fan motor. ○ 3) Then remove the fan motor. ○ Electrical How to remove the parts electrical parts. 1) After finish work of item 1 and item 2, remove ○ the three connectors for the compressor and the compressor crankcase heater and the electric...
  • Page 183 ○ and discharge temp. sensor(T5). 4)Disconnect the electronic expansion valve wire from the control board ○ ○ ○ 5) Remove the grounding screw. 6) Remove the power supply wires(old label, L1,L2,S; old label 1,2,3). ○ ○ 7) Then remove the electronic control box.
  • Page 184 Four-way How to remove the valve The picture of four-way valve may be different from four-way valve. the one on your side. ○ ○ 1) Perform work of item1,2,3. 2) Recover refrigerant from the refrigerant circuit. 3) Remove the screw of the coil and then remove the coil.
  • Page 185  MOBA30-09HFN1-MT0W Part name Procedures Remarks Panel plate How to remove the panel Screws of top panel (3 screws,1 screws is under the big handle) plate. 3 screw of Stop operation of the big handle air conditioner and turn “OFF” the power breaker. Remove the big handle first,then remove the top cover (3 screws)
  • Page 186 panel plate following ○ procedure 1. 2) Remove the nut fixing the fan, and remove the fan. 3) After remove the top cover .Unfix the hooks and ○ then open the electronic control box cover. T3,T4,T5 sensor Electronic expansion valve 4) Disconnect the connector for fan motor Motor...
  • Page 187 5) Remove the four fixing screws of the fan motor, then remove the motor. ④ ○...
  • Page 188 Electrical How to remove the parts electrical parts. After finish work of item 1 and item 2, remove the connector for the compressor . ○ Pull out the two blue wires connected with the four way valve. ○ ○ 3) Pull out connectors of the condenser coil temp.
  • Page 189 electronic expansion valve wire from the control board ④ 5) Remove the ground wires . ○ ○ 6) Remove the wires(1,2,3). 7) Then remove the electronic control box.
  • Page 190 Four-way How to remove the valve The picture of four-way valve may be different from four-way valve. ④ the one on your side. 1）Perform work of item ○ 1,3. 2)Recover refrigerant from the refrigerant circuit. 3)Remove the screw of the coil and then remove the coil.
  • Page 191  MOB30-09HFN1-MX0W, MOB30-12HFN1-MV0W, MOB30-12HFN1-MT0W Part name Procedures Remarks Panel plate How to remove the panel plate. Screws of top panel (3 screws, 1 screw is under the big handler) 1) Stop operation of the air conditioner and 3 screws turn “OFF” the power of the big breaker.
  • Page 192 ○ ass’y. 1) After remove the panel plate following procedure 1, remove the hex nut fixing the fan and then remove the fan. ○ 2) Unfix the hooks and then open the electronic compressor T3,T4,T5 sensor control box cover. 4 way valve Motor Electronic expansion valve...
  • Page 193 3) Disconnect the connector for fan motor ○ from the electronic control board. ○ 4) Remove the four fixing screws of the fan motor. Then remove the fan motor. Electrical How to remove the ○ parts electrical parts. 1) After finish work of item 1 and item 2, remove the connectors for the compressor.
  • Page 194 ○ 3) Pull out connectors of the condenser coil temp. sensor(T3),outdoor ambient temp. sensor(T4) and discharge temp. sensor(T5). 4) disconnect the ○ electronic expansion valve wire 5) Remove the ○ ○ grounding screw. 6) Remove the Wires (1,2,3). Then remove the electronic control box.
  • Page 195 Four-way How to remove the valve The picture of four-way valve may be different from four-way valve. the one on your side. ○ ○ 1) Perform work of item1,3. 2) Recover refrigerant from the refrigerant circuit. 3) Remove the screw of the coil and then remove the coil.
  • Page 196  MOCA30-18HFN1-MT0W, MOCA31-18HFN1-MT0W Part name Procedures Remarks Panel plate How to remove the panel plate. 1) Stop operation of 3 screws of top panel the air conditioner and turn “OFF” the power breaker. 3 screws of big handle 9 screws of front panel 2) Remove the top panel(3 screws).
  • Page 197 1) After remove the panel plate following procedure 1, remove the hex nut fixing the fan and then remove the fan. ○ 2) After remove the top cover . Unfix the hooks and then open the electronic control box cover. Compressor wire T3,T4,T5 sensor wire Motor wire...
  • Page 198 ○ board. 4) Remove the four fixing screws of the fan motor. ○ Then remove the fan motor. Electrical How to remove the ○ parts electrical parts. 1) After finish work of item 1 and item 2, remove the connectors for the compressor and reactor.
  • Page 199 ○ 3) Pull out connectors of ○ the condenser coil temp. sensor(T3),outdoor ambient temp. sensor(T4) and discharge temp. sensor(T5). 4) disconnect the electronic expansion valve ○ wire 6) remove the electric heaters. ○...
  • Page 200 6) Remove the grounding screw. 7) Remove the Wires (1,2,3 or L1,L2,S).Then remove the electronic control box. ⑥ ○...
  • Page 201 Four-way How to remove the valve The picture of four-way valve may be different from four-way valve. the one on your side. 1) Perform work of ④ ○ item1,3. 2) Recover refrigerant from the refrigerant circuit. 3) Remove the screw of the coil and then remove the coil.
  • Page 202  MOD30-24HFN1-MT0W, MOD31-24HFN1-MT0W, MOD30U-36HFN1-M Part name Procedures Remarks Panel plate How to remove the panel 4 screws of big handle plate. Screws of top panel(3screws,1screws is under the big handle) 1) Stop operation of the air conditioner and turn “OFF” the power breaker. Screws of big handle (3 screws)
  • Page 203 ass’y. Electronic control box 1) After remove the panel plate following procedure 1 2) Remove the nut fixing the fan,and remove the fan. compressor ○ 3) Unfix the hooks and remove the screws, then ○ open the electronic control box cover.
  • Page 204 Compressor T3,T4,T5,sensor Pressure switch wire ○ 4) Disconnect the connector for fan motor Motor wire Electronic expansion 4 way valve from the electronic control ○ board. 5) Remove the four fixing screws of the fan motor, then remove the motor. ○...
  • Page 205 Electrical How to remove the ○ parts electrical parts. 1) After finish work of item 1 and item 2, remove the connector for the compressor ○ 2) Pull out the two blue wires connected with the four way valve. 3) Pull out connectors of ○...
  • Page 206 ○ 5) Disconnect the ○ electronic expansion valve wire from the control board ○ ○ 6) Remove the ground wires . 7) Remove the wires(1,2,3 or L1,L2,S). Then remove the electronic control box.
  • Page 207 Four-way How to remove the valve The picture of four-way valve may be different from four-way valve. the one on your side. 1) Perform work of item 1,3. 2) Recover refrigerant from the refrigerant circuit. 3) Remove the screw of the coil and then remove the coil.
  • Page 208  MOE30U-48HFN1-M, MOE30U-60HFN1-M Part name Procedures Remarks Fan ass’y How to remove the fan ass’y. 1) Stop operation of the air conditioner and turn “OFF” the power breaker. 2) Remove the screws of air outlet grille(8 screws) 3) Remove the hex nut fixing the fan.
  • Page 209 screw) 7) Disconnect the fan motor connectors FAN1(3p,white) and ⑥ FAN2(3p,white) from DC motor driver board. 8) Remove the fan motor after ⑦ unfastening fixing screws. ⑧ Panel plate How to remove the panel plate. 1) Remove big handle.(2 screws) and water Screws of big handle...
  • Page 210 Screws of right-rear panel Electrical How to remove the electrical parts parts. 1) Perform work of item 1 step 5~6 and item 2. IPM board DC Fan PCB board Driver board 2) Disconnect the fan motor connector(5p,white) from the IPM board. ②...
  • Page 211 CN2(yellow) CN1(red) CN6(black) CN3(yellow) U、V、W(black) CN9(10p,white) 4) Remove the screws fixing the IPM board and remove the IPM board. Disconnect the connectors and wires connected from PCB and other parts. Connectors: CN8: Discharge temperature sensor CN1/CN3 (2p,white) CN12：Heatsink temperature sensor(2p,red) CN9:T3/T4 temperature sensor (2p/2p,white) CN15: Electronic expansion valve...
  • Page 212 wire (yellow-green) after removing the big handle. ⑥ Remove the PCB board. Compressor How to remove the compressor. 1) Perform work of item 1 step 5~6 and item 2.. 2) Extract refrigerant gas. 3) Remove the sound insulation material and crankcase heating cable.
  • Page 213 The 4-way How to remove the 4-way valve valve 1) Perform work of item 1 step 5~6 and item 2.. Coil 2) Extract refrigerant gas. Welded parts 3) Remove the electrical parts from item 3. 4) Remove fixing screw of the coil, and remove the coil.

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