Air-Con A16CM4H4R18 Service Manual
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Air-Con A16CM4H4R18 Service Manual

Air-Con A16CM4H4R18 Service Manual

Refrigerant r410a
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A16CM4H4R18
A16CM4H4R24
A16CM4H4R30

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Summary of Contents for Air-Con A16CM4H4R18

  • Page 1 A16CM4H4R18 A16CM4H4R24 A16CM4H4R30...
  • Page 3 A16CM4H4R18 A16CM4H4R24 A16CM4H4R30...
  • Page 4 Installing, starting up, and servicing air conditioner can be Make sure the outdoor unit is installed on a stable, level hazardous due to system pressure, electrical components, surface with no accumulation of snow, leaves, or trash and equipment location, etc. beside.
  • Page 5 A16CM4H4R18...
  • Page 7 A16CM4H4R24 A16CM4H4R30...
  • Page 9 A16CM4H4R18 A16CM4H4R24 A16CM4H4R30...
  • Page 10 outdoor indoor filter A heat exchanger filter outdoor heat exchanger 4-way valve B heat exchanger filter high pressure switch Note: Not available for 14K/18K model discharge silencer C heat exchanger discharge temperature sensor filter D heat exchanger gas -liquid separator filter Note: Not available for 14K/18K model A1:A unit electronic expansion valve B1:B-unit electronic expansion valve...
  • Page 11 A16CM4H4R18 POWER AC-L1 EXHAUST TEM.SENSOR AC-L AC-L2 OUTROOM T-SENSOR TEM.SENSOR E(PE) OUTTUBE 5YEGN(GN) TEM.SENSOR 8YEGN(GN) N(1) YEGN(GN) COM-INNER 14WH N(1) 13WH OVC-COMP YEGN(GN) AP1: Main Board COMP. 10YE LX1-1 LX1-2 16RD COMP TUBE-B C(T) HEAT-C OFAN1 TUBE-A HEATER 11RD 15RD...
  • Page 12 A16CM4H4R24 11BN 21BN EXHAUST AC-L1 TEM.SENSOR AP2: 22BU 10BU FILTER OUTROOM AC-L T-SENSOR 9YEGN(GN) AC-L2 Filter Board POWER TEM.SENSOR TERMINAL OUTTUBE BLOCK E(PE) TEM.SENSOR N(1) 12YEGN(GN) 4-WAY VALVE YEGN(GN) TERMINAL 20YE BLOCK N(1) High Pressure Switch 19BU COM-INNER YEGN(GN) ELECTRONIC EXPANSION VALVE 18WH TERMINAL...
  • Page 13 A16CM4H4R18 Compressor interface Unit A liquid valve and gas valve Unit B liquid valve and gas valve Compressor overload protector Temperature sensor Compressor electric heater Outdoor fan 4-way valve Chassis electric heater (reserved) Unit A electronic expansion valve Unit B electronic...
  • Page 14 A16CM4H4R24 A16CM4H4R30 Compressor interface Temperature sensor interface of unit A liquid valve and gas valve Temperature sensor interface of unit B liquid valve and gas valve Temperature sensor interface of unit C liquid valve and gas valve Temperature sensor interface of unit D liquid valve and gas valve Temperature sensor interface...

  • Page 15: Basic Functions Of The System

    1 Basic functions of the system 1.1 Cooling Mode 1.1.1 Cooling conditions and process: If the compressor is in stop status and start the unit for cooling operation, when one of the indoor units reaches the cooling operation condition, the unit start cooling operation; in this case, the electronic expansion valve, the outdoor fan and the compressor start operation.

  • Page 16: Protection Function

    1.3.3 Outdoor fan control in heating mode The outdoor fan starts before 5s of the starting of compressor and then it will run in high speed for 40s; The fan shall run at every speed for at least 80s; When the compressor stops, the outdoor fan stops after 1min. 1.3.4 Defrosting function When the defrosting condition is met, the compressor stops;...

  • Page 17: Overcurrent Protection

    2.4 Communication malfunction Detection of the quantity of installed indoor units: After 3min of energizing, if the outdoor unit does not receive the communication data of certain indoor unit, the outdoor unit will judge that indoor unit is not installed and will treat it as it is not installed. If the outdoor unit receives the communication data of that indoor unit later, the outdoor unit will treat that unit as it is installed.

  • Page 18: Outdoor Unit

    A16CM4H4R18 Warning Be sure to cut off the power supply before cleaning the air conditioner; otherwise electric shock might happen. Wetting of air conditioner may cause the risk of electric shock. Make sure not to wash your air conditioner in any case.
  • Page 19 Location Tighten the connections using two wrenches working Use bolts to secure the unit to a flat, solid floor. When mounting the unit on a wall or the roof, make in opposite directions. sure the support is firmly secured so that it cannot Caution: Installation Must be Performed in Accordance move in the event of intense vibrations or a strong with the NEC/CEC by Authorized Personnel Only.

  • Page 20: Installation Dimension Diagram

    When picking up and moving the units, you must be guided by trained and qualified person. Ensure that the recommended space is left around the a ppliance . A16CM4H4R18 50cm or more Space to the cover 30cm or above...
  • Page 21 A16CM4H4R18 1. R emove the handle at the right side plate of the A16CM4H4R18 outdoor unit (six screw). Remove the cable clamp, connect the connection cable and power cable with the terminal at the row of connection and fix. the connection. The fitting line distributing must be consistent with the indoor unit.
  • Page 22 A16CM4H4R24 1. Remove the handle at the right side plate of the outdoor unit (ten screw). Remove the cable clamp, connect the connection cable and power cable with the terminal at the row of connection and fix the connection. The fitting line distributing must be consistent with the indoor unit.
  • Page 23 A16CM4H4R30 connection cable Remove the handle at the right side plate of the outdoor unit (ten screw). connection cable Remove the cable clamp, connect the connection cable and connection cable power cable with the terminal at the row of connection and fix the connection.
  • Page 24 Check Items Problems Owing to Improper Installation Is the installation reliable? The unit may drop, vibrate or make noises Has the gas leakage been checked? May cause unsatisfactory cooling (heating) effect Is the thermal insulation of the unit May cause condensation and water dropping sufficient? Is the drainage smooth? May cause condensation and water dropping...
  • Page 25 A16CM4H4R18...
  • Page 26 A16CM4H4R18...
  • Page 27 A16CM4H4R24...
  • Page 28 Exploded Views and Parts list Part.Code Description A16CM4H4R24 Product.code CB228W01700 Front.Grill 01473049 Cabinet 01433047P Drainage.Plug 06813401 Chassis.Sub-assy 01203942P Drainage.Connecter 06123401 Compressor.and.Fittings 00105036 Compressor.Gasket 76710207 Gas-liquid.Separator.Assy 07225017 Inhalation.Tube 03723455 Right.Side.Plate 0130319401P Valve.Support.Assy 0710306603 Cut.off.Valve 07130239 Cut.off.Valve 07133185 big..handle.Assy 02113043. Terminal.cover.Sub-Assy .01253057. Temperature.Sensor 39000073 Temperature.Sensor...
  • Page 29 A16CM4H4R30...
  • Page 30 A16CM4H4R30...
  • Page 31 ○ ● Note: : off : on : blink When several malfunctions occur at the same time, they will be displayed in circulation and every malfunction is displayed for 5s. Malfunction description LED1 LED2 LED3 LED4 ○ ○ ○ ○ Normal stop ●...
  • Page 32 ● ● ● Communication failure with Unit A ● ● Communication failure with Unit B ○ ○ ● Communication failure with Unit C ● ○ ● Communication failure with Unit D ○ ● Unit A freeze protection ○ ● ● Unit B freeze protection ●...
  • Page 33 Energize the unit Please check: 1. if the indoor and outdoor heat exchanges are dirty, if there is obstacle to affect the radiation; 2. if the indoor and outdoor fans are running If the above cases are existed? normally; 3. if the pressure of the system is too high; 4.
  • Page 34 (2) PFC protection malfunction Main checking points: If the power supply is normal; ● ● Check if the connection wire of induction is connected well and if the induction is broken; Flow chart: Start Check If the power supply is normal Turn on the unit after the power supply resumes to Power supply is abnormal...
  • Page 35 (3) Capacity charging malfunction Main checking points: If the wiring of the induction is connected well and if the induction is broken; ● ● If the mainboard is broken; Flow chart: Energize the unit and wait for 1min Test the voltage between the two ends of the electrolytic capacitor with the DC shift of the universal meter...
  • Page 36 (4) Anti-high temperature and overload malfunction Main checking points: If the outdoor ambient temperature is within the normal range; ● ● If the outdoor fan is running normally; ● If the indoor and outdoor radiation environment is good; Flow chart: Start It is a normal protection, please If the outdoor ambient temperature...
  • Page 37 (5) Temperature sensor malfunction Main checking points: If the temperature sensor is damaged or broken If the terminal of the temperature sensor is loosended or not connected; If the mainboard is broken; Flow chart: Start Check whether the wiring terminal between temperature sensor and controller is loosened or poorly contacted? Insert the temperature...
  • Page 38 (6) Start failure malfunction Main checking points: If the connection wire of the compressor is connected properly; If the stop duration of the compressor is sufficient; If the compressor is broken; If the refrigerant charging amount is too much; Flow chart: Energize and start the unit If the stop duration of the compressor...
  • Page 39 (7) Communication malfunction Main checking points: If the connection wire between the indoor unit and outdoor unit is connected well, if the wires inside the unit is connected well; If the indoor mainboard or outdoor main board is broken; Flow chart: Communication malfunction of some indoor units De-energize,check the connection...
  • Page 40 All the indoor units appear communication malfunction De-energize,check the connection wire of indoor and outdoor unit and the wire of the eletric box is connected correctly Reconnect according to Eliminate the malfunction Connected correctly? the wiring diagram De-energize, check if the connection wire between the outdoor mainboard and the filter board according to the wiring diagram Reconnect according to...
  • Page 41 (8) Compressor overload, diacharge protection malfunction Main checking points: If the eletric expansion valve is connected well or it is broken; If there is refrigerant leakage; If the overload protector is broken; Flow chart: Start If the overload protector is connected well? Check the resistance between the two ends of the overload protector in ambient temperature, if the resistance is below 1k...
  • Page 42 (9) Compressor desynchronizing malfunction Main checking points: If the pressure of the system is too high; If the eletric expansion valve is working normally or it is broken; If the radiation of the unit is good; Flow chart: The unit appears desynchronizing as soon as energizing and starting The stop duration of the compressor is longer than 3min?

This manual is also suitable for:

A16cm4h4r24A16cm4h4r30A16ew4h4r09A16ew4h4r18A16ew4h4r12

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