Cooper & Hunter Nordic Commercial Series Service Manual
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Cooper & Hunter Nordic Commercial Series Service Manual

Outdoor unit
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Thank you for choosing Cooper&Hunter air conditioner, please read this service manual
carefully before operation and retain it for future reference.
OUTDOOR UNIT
NORDIC
COMMERCIAL SERIES
Service manual
Outdoor unit
Models:
CH-IU09NK4
CH-IU12NK4
CH-IU18NK4
CH-IU24NK4
CH-IU30NK4
CH-IU36NM4
CH-IU42NM4
CH-IU48NM4
CH-IU60NM4

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Summary of Contents for Cooper & Hunter Nordic Commercial Series

  • Page 1 OUTDOOR UNIT NORDIC COMMERCIAL SERIES Service manual Outdoor unit Models: CH-IU09NK4 CH-IU12NK4 CH-IU18NK4 CH-IU24NK4 CH-IU30NK4 CH-IU36NM4 CH-IU42NM4 CH-IU48NM4 CH-IU60NM4 Thank you for choosing Cooper&Hunter air conditioner, please read this service manual carefully before operation and retain it for future reference.

  • Page 2: Table Of Contents

    CONTENTS PRODUCT ................................... 1 MODELS LIST ................................3 1.1 Outdoor Unit ................................3 2 PRODUCT DATA ................................. 4 2.1 Product Data of Indoor Unit ..........................4 2.2 Operation Range ..............................5 2.3 Electrical Data ................................ 5 3 PIPING DIAGRAM .

  • Page 3: Product

    C&H ODU NORDIC Commercial 4 Service Manual PRODUCT 1 MODELS LIST 1.1 Outdoor Unit Power Supply Model Name Appearance (V, Ph, Hz) CH-IU09NK4 220-240V~ 50Hz CH-IU12NK4 220-240V~ 50Hz CH-IU18NK4 220-240V~ 50Hz CH-IU24NK4 220-240V~ 50Hz CH-IU30NK4 220-240V~ 50Hz CH-IU36NM4 380-415V 3N~ 50Hz CH-IU42NM4 380-415V~ 3N 50Hz CH-IU48NM4...

  • Page 4: Product Data

    C&H ODU NORDIC Commercial 4 Service Manual 2 PRODUCT DATA 2.1 Product Data of Outdoor Unit Model CH-IU09NK4 CH-IU12NK4 CH-IU18NK4 CH-IU24NK4 Power Supply 220-240V~ 50Hz Heat Exchange Cross Fin Coil Type Rotary Rotary Rotary Rotary Compressor Power Input 1440 2550 Refrigerant Control Electronic Expansion Valve...

  • Page 5: Operation Range

    C&H ODU NORDIC Commercial 4 Service Manual 2.2 Operation Range Mode Range of Outdoor Temperature Cooling -15-48 Heating -20-24 2.3 Electrical Data Table 1 Electrical Data of Outdoor Unit Min. Fan Motor Compressor Fuse/Breaker Power Power Capacity Supply Model Qty. Supply Cord V/Ph/Hz...

  • Page 6: Piping Diagram

    C&H ODU NORDIC Commercial 4 Service Manual 3 PIPING DIAGRAM Figure 1...

  • Page 7: Outdoor Unit Installation

    C&H ODU NORDIC Commercial 4 Service Manual 4 OUTDOOR UNIT INSTALLATION 4.1 Before Installation After receiving the machine, please check for any transport damage. If finding any surface or internal damage, please immediately report to the transport company or equipment company in writing. After receiving the machine, please check the unit and accessories in reference to the packing list.

  • Page 8: Caution For Installation

    C&H ODU NORDIC Commercial 4 Service Manual Figure 3 4.3 Caution for Installation The outdoor unit shall be so installed that the air discharged out of the outdoor unit will not flow back and that enough space shall be maintained around the machine for repair; The installing position shall be in good ventilation, so that the machine can breathe and exhaust enough air.

  • Page 9: Refrigeration Piping Work

    C&H ODU NORDIC Commercial 4 Service Manual Table 3 Unit: mm Item Model CH-IU09NK4 CH-IU12NK4 CH-IU18NK4 CH-IU24NK4 CH-IU30NK4 1105 1100 CH-IU36NM4 CH-IU42NM4 1350 CH-IU48NM4 CH-IU60NM4 1085 1365 5 REFRIGERATION PIPING WORK 5.1 Refrigeration Piping Work Procedures and Caution in Connecting 5.1.1 Flare Processing (1) Cut the connection pipe with the pipe cutter and remove the burrs.
  • Page 10 C&H ODU NORDIC Commercial 4 Service Manual 5.1.2 Bending Pipes (1) The pipes are shaped by your hands. Be careful not to collapse them. Figure 6 (2) Do not bend the pipes in an angle more than 90°. (3) When pipes are repeatedly bent or stretched, the material will harden, making it difficult to bend or stretch them any more.
  • Page 11 C&H ODU NORDIC Commercial 4 Service Manual When connecting the pipe to the unit or removing it from the unit, please do use both the spanner and the torque wrench.( Figure 8) When connecting, smear both inside and outside of the flare nut with refrigeration oil, screw it hand tight and then tighten it with the spanner.
  • Page 12 C&H ODU NORDIC Commercial 4 Service Manual Figure 9 5.1.5 Checking the Pipe Connections for Gas Leaking For both indoor and outdoor unit side, check the joints for gas leaking by the use of a gas leakage detector without fail when the pipes are connected. 5 .1.6 Vacuum and Gas Leakage Inspection CAUTION! Do not purge the air with refrigerants but use a vacuum pump to vacuum the installation! There is no...
  • Page 13 C&H ODU NORDIC Commercial 4 Service Manual units, 20 minutes for the 18k units, 30 minutes for the 24/30/36k units, 45 minutes for the 42/48/60 units. And verify if the pressure gauge at the low pressure side of the manifold valve assembly reads -1.0Mp (-75cmHg), if not, it indicates there is leak somewhere.

  • Page 14: Specification Of Connection Pipe

    C&H ODU NORDIC Commercial 4 Service Manual 5.2 Specification of Connection Pipe Table 5 Item Max. Pipe Max. Height Difference Drainage pipe(Outer Size of Fitting Pipe(Inch) Length between Indoor Unit and Diameter × wall thickness) Model Outdoor Unit (m) (mm) Liquid CH-IU09NK4 φ17×1.75...

  • Page 15: Electric Wiring Work

    C&H ODU NORDIC Commercial 4 Service Manual 6 ELECTRIC WIRING WORK 6.1 Wiring Precautions WARNING! ①. Before obtaining access to terminals, all supply circuits must be disconnected. ②. The rated voltage of the unit is as shown as Table 1-4-1 and Table 1-4-2 ③.
  • Page 16 C&H ODU NORDIC Commercial 4 Service Manual (4) Position the round terminal wire, and replace and tighten the terminal screw with a screwdriver. (Figure 1 4 ) Figure1 3 Figure 1 4 Figure 1 5 (3) How to fix connection cord and power cord by cord clamp After passing the connection cord and power cord through the insulation tube, fasten it with the cord clamp.
  • Page 17 C&H ODU NORDIC Commercial 4 Service Manual Electric wiring of outdoor unit side Note: When connecting the power supply cord, make sure that the phase of the power supply matches with the exact terminal board. If not, the compressor will rotate reversely and run improperly. Remove the big handle (09~42K) /front board (48/60K) of the outdoor unit and insert the end of the communication cord and the power cable into the terminal board.

  • Page 18: Trouble Table

    C&H ODU NORDIC Commercial 4 Service Manual 7 TROUBLE TABLE 7.1 Description of Drive Malfunction Main board dual 8 numeral tube Display Codes for Outdoor Unit of 09~48k Table 6 Outdoor unit display of Malfunction Item Indoor Unit Display dual 8 numeral tube DC busbar over-voltage protection IPM or PFC over-temperature protection Current sense circuit error...

  • Page 19: Troubleshooting Flow Chart Of Drive Malfunction

    C&H ODU NORDIC Commercial 4 Service Manual 7.2 Troubleshooting Flow Chart of Drive Malfunction Note: For Outdoor Unit Drive (Inverter) by Single-phase Motor (Applicable to CH-IU09NK4/CH-IU1 2 NK4/CH-IU1 8 NK4/CH-IU2 4 NK4/CH-IU3 0 NK4)  P0 Drive module reset  P7 IPM or PFC temperature sensor error ...
  • Page 20 C&H ODU NORDIC Commercial 4 Service Manual  P8 IPM or PFC over-temperature protection  PH DC busbar over-voltage protection  PL DC busbar under-voltage protection...
  • Page 21 C&H ODU NORDIC Commercial 4 Service Manual  P6 Drive-to-main-control communication error  Lc Compressor Startup Failure  P5 Compressor current protection  H7 Compressor motor desynchronizing  H5 IPM protection  Ld Phase loss...
  • Page 22 C&H ODU NORDIC Commercial 4 Service Manual PU Charging circuit error   ee driving board chip error(09K-42K)
  • Page 23 C&H ODU NORDIC Commercial 4 Service Manual H6 DC fan error ...

  • Page 24: Interface

    C&H ODU NORDIC Commercial 4 Service Manual 7.3 Interface CH-IU09NK4/CH-IU12NK4 Main Control board Table 7 Printing Interface Printing Interface LX_2 PFC reactor wire (yellow) LX_1 PFC reactor wire (white) Compressor Phase W Compressor Phase V Compressor Phase U DC-BUS (Reserved) DC_MOTOR (Reserved) Compressor interface...
  • Page 25 C&H ODU NORDIC Commercial 4 Service Manual CH-IU18NK4 /CH-IU2 4 NK4 /CH-IU3 0 NK4 Main Control Board Table 7 SILK-SCREEN INTERFACE INTERFACE INSTRUCTION AC-L Live wire input Live wire input AC-N Neutral wire input Neutral wire input Power supply interface to the drive Control power output[1- DC bus PWR 1 1-pin: DC bus voltage...
  • Page 26 C&H ODU NORDIC Commercial 4 Service Manual 3-pin: A, 4-pin: GND High pressure switch for fan speed H-PRESS Pressure protection switch for fan speed adjustment adjustment High pressure switch for Interface of high pressure protection systemprotection(obligate) Low pressure switch for system protection Interface of low pressure protection (obligate) OVC-COMP...
  • Page 27 C&H ODU NORDIC Commercial 4 Service Manual (2) Filtering Board Table 9 No. Printing Interface Printing Interface Neutral wire output 1 (white) (only for N-OUT1 N-OUT Neutral wire output (white) 18K) L-OUT Live wire output (red) Grounding wire (Reserved) AC-L Live wire input (red) AC-N Neutral wire input (white)
  • Page 28 C&H ODU NORDIC Commercial 4 Service Manual Table 1 0 No. Terminal name Corresponding function instruction No. Terminal name Corresponding function instruction Communication interface [1-3.3V, Connect to PFC reactor 1 outlet line COMM 2-TX, 3-RX, 4-GND] (connect to L1-2 main control board COMM1) Power interface [1-310VDC, 3-GND] Connect to PFC reactor 2 outlet line (connect to main control board PWR1)

  • Page 29: Ipm, Pfc Testing Method

    C&H ODU NORDIC Commercial 4 Service Manual 7.4 IPM, PFC Testing Method 7.4.1 Method of Testing IPM Module (1) Preparation before test: prepare a universal meter and turn to its diode option, and then remove the wires U, V, W of the compressor after it is powered off for one minute. (2) Testing Steps Step 1: put the black probe on the place P and the red one on the wiring terminal U, V, W respectively as shown in the following figure to measure the voltage between UP, VP and WP.
  • Page 30 C&H ODU NORDIC Commercial 4 Service Manual C H-IU36NM4 / C H-IU42NM4  CH-IU18NK4/CH-IU2 4 NK4/ CH-IU3 0 NK4 / C H-IU 48NM4/C H-IU 60NM4...

  • Page 31: Wiring Diagram

    C&H ODU NORDIC Commercial 4 Service Manual 8 WIRING DIADRAM 8.1 Outdoor unit The actual wiring should always refer to the wiring diagram of the unit. Model: CH-IU0 9 NK4, CH-IU12NK4 Model: CH-IU18NK4...
  • Page 32 C&H ODU NORDIC Commercial 4 Service Manual Model: CH-IU2 4 NK4, CH-IU30NK4 Model: 36NM4 CH-IU...
  • Page 33 C&H ODU NORDIC Commercial 4 Service Manual Model: 42NM4 CH-IU Model: 48NM4 CH-IU...
  • Page 34 C&H ODU NORDIC Commercial 4 Service Manual Model: 60NM4 CH-IU...

  • Page 35: Disassembly And Assembly Procedure Of Main Parts

    C&H ODU NORDIC Commercial 4 Service Manual 9 DISASSEMBLY AND ASSEMBLY PROCEDURE OF MAIN PARTS 9.1 Outdoor Unit  09/12K Disassembly and Assembly of external casing Remark : Step Illustration Handling Instruction 1. Remove the top cover and handle; 1. Remove external casing 2.
  • Page 36 C&H ODU NORDIC Commercial 4 Service Manual Assemble the unit in the reverse 5. Assemble unit procedures of disassembly.  18K Disassembly and Assembly of external casing Remark : Step Illustration Handling Instruction 1. Remove the top cover and handle; 1.
  • Page 37 C&H ODU NORDIC Commercial 4 Service Manual Assemble the unit in the reverse 4. Assemble unit procedures of disassembly.  24/30k Disassembly and Assembly of external casing Remark : Step Illustration Handling Instruction 1. Remove the top cover and handle; 1.
  • Page 38 C&H ODU NORDIC Commercial 4 Service Manual Assemble the unit in the reverse 4. Assemble unit procedures of disassembly.  36k Disassembly and Assembly of external casing Remark : Step Illustration Handling Instruction 1. Remove the top cover and handle; 1.
  • Page 39 C&H ODU NORDIC Commercial 4 Service Manual 1. Discharge the refrigerant inside the pipeline and recycle the refrigerant during discharging; 2. Unsolder the 4-way valve assy 4. Remove compressor from compressor; 3. Remove the nut fixing compressor; 4. Take away the compressor from chassis.
  • Page 40 C&H ODU NORDIC Commercial 4 Service Manual 1. Discharge the refrigerant inside the pipeline and recycle the refrigerant during discharging; 3. Remove gas liquid 2. Unsolder the 4-way valve assy separator. from gas liquid separator; 3. Remove the gas liquid separator.

  • Page 41: 0 Exploded Views And Spare Part List

    C&H ODU NORDIC Commercial 4 Service Manual 1 0 EXPLODED VIEWS AND SPARE PART LIST 10.1 Outdoor Unit  Model: CH-IU0 9 NK4/CH-IU12NK4 Exploded Views and spare parts list:...
  • Page 42 C&H ODU NORDIC Commercial 4 Service Manual CH-IU09NK4 CH-IU12NK4 Name of Part Part Code Quantity Part Code Quantity Front Grill 22413433 '22413433 Front Panel 0153303204P '0153303204P Axial Flow Fan '10333012 '10333012 Brushless DC Motor 15709400007 '15709400007 Chassis Sub-assy 0280301701P 0280301701P Drainage Connecter '06123401 '06123401...
  • Page 43 C&H ODU NORDIC Commercial 4 Service Manual  Model: CH-IU18NK4 Exploded Views and spare parts list:...
  • Page 44 C&H ODU NORDIC Commercial 4 Service Manual CH-IU18NK4 Name of Part Part Code Quantity Front Grill '22415002 Front Panel 01535013 Axial Flow Fan '10335008 Fan Motor 1570280204 Chassis Sub-assy 01195200015P Drainage Connecter '06123401 Electrical Heater '7651300403 Motor Support Assy 01805200173 Compressor Overload '00180030 Protector(External)
  • Page 45 C&H ODU NORDIC Commercial 4 Service Manual  Model: CH-IU2 4 NK4/ CH-IU30NK4 Exploded Views and spare parts list:...
  • Page 46 C&H ODU NORDIC Commercial 4 Service Manual CH-IU24NK4 CH-IU30NK4 Name of Part Part Code Quantity Part Code Quantity Front Grill '22415003 '22415003 Cabinet '01435004P '01435004P Axial Flow Fan 10335014 '10335014 Front Side Plate '01305086P '01305086P Fan Motor '15702802 '15702802 Chassis Sub-Assy 0119520001301P '01195200013P Drainage Connecter...
  • Page 47 C&H ODU NORDIC Commercial 4 Service Manual  Model: CH-IU36NM4 Exploded Views and spare parts list:...
  • Page 48 C&H ODU NORDIC Commercial 4 Service Manual CH-IU36NM4 Name of Part Part Code Quantity Front Grill '22415005 Handle '26235253 Cabinet '01435007P Front Side Plate Sub-Assy '01305508 Chassis Sub-Assy '01195315P Drainage Joint '26113009 Electrical Heater(Compressor) '7651873209 Clapboard Sub-Assy '01245253 Compressor Gasket '76713066 Compressor '00205200003...
  • Page 49 C&H ODU NORDIC Commercial 4 Service Manual  Model: CH-IU42NM4 Exploded Views and spare parts list:...
  • Page 50 C&H ODU NORDIC Commercial 4 Service Manual CH-IU42NM4 Name of Part Part Code Quantity Front Grill '01575200001 Diversion Circle '10474100001 Cabinet '01514100002P Handle '26235253 Front Side Plate '01314100021P Axial Flow Fan '10434100003 Fan Motor '15704115 Motor Support Sub-Assy '01805200185 Compressor Gasket '76713066 Chassis Sub-assy '01195200020P...
  • Page 51 C&H ODU NORDIC Commercial 4 Service Manual  Model: CH-IU48N M 4 Exploded Views and spare parts list:...
  • Page 52 C&H ODU NORDIC Commercial 4 Service Manual CH-IU48NM4 Name of Part Part Code Quantity Front Grill '01575200001 Diversion Circle '10474100001 Cabinet '01514100002P Handle '26235253 Front Side Plate '01314100021P Axial Flow Fan '10434100003 Fan Motor '15704115 Motor Support Sub-Assy '01805200202 Chassis Sub-assy '01195200020P Compressor Gasket '76710247...
  • Page 53 Cooper&Hunter International Corporation www.cooperandhunter.com...

This manual is also suitable for:

Ch-iu09nk4Ch-iu12nk4Ch-iu18nk4Ch-iu24nk4Ch-iu30nk4Ch-iu36nm4 ... Show all

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