Air-Con ABXEM4H4S09 Service Manual
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Air-Con ABXEM4H4S09 Service Manual

Air-Con ABXEM4H4S09 Service Manual

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MODEL:
ABXEM4H4S09/ABXCI4H4S0
9
Service Manual
ABXEM4H4S12/ABXCI4H4S1
2
ABXEM4H4S18/ABXCI4H4S1
8
1
ABXEM4H4S24/ABXCI4H4S2
4

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  • Page 1 Service Manual MODEL: ABXEM4H4S09/ABXCI4H4S0 ABXEM4H4S12/ABXCI4H4S1 ABXEM4H4S18/ABXCI4H4S1 ABXEM4H4S24/ABXCI4H4S2...

  • Page 2: Table Of Contents

    Contents 1. Safety Considerations ................................3 2. Product Specifications ................................5 3. Product Picture and Drawing ..............................9 3- 1. Product dimensions ..............................9 4. Installation Instruction ................................. 10 4-1. Installation Place and Condition ..........................11 4-2. Electric Wiring Diagram ............................14 4-3.

  • Page 3: Safety Considerations

    1. Safety Considerations IMPORTANT! Please Read Before Starting This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an important part of your job to install or service the system, so it operates safely and efficiently.
  • Page 4 ● Ground the unit following local electrical codes. ● Connect all wiring tightly. Loose wiring may cause overheating at connection points and a possible fire hazard. When Transporting Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your knees when lifting to reduce strain on your back.

  • Page 5: Product Specifications

    2. Product Specifications ABXEM4H4S09/ABX ABXEM4H4S12/ABX ABXEM4H4S18/ABX CI4H4S09 CI4H4S12 CI4H4S18 Model No. T1, H/P, INVERTER T1, HP, INVERTER T1, HP, INVERTER Type Ratings 2600 3517 5275 Cooling Capacity 5569 2750 3810 Heating Capacity 1385 Rated Input-Cooling 1595 1120 Rated Input-Heating Moisture Removal...
  • Page 6 Range Cooling Operating 16-43 -15-46 21-46 Temperature Range ℃ Heating Operating -15--46 -15-32 -15-24 Temperature Range ℃ Features Display on Front Panel LCD Wireless Remote Controller Removable and washable Panel Washable PP Filter 24 Hours Timer 3 Speed and Auto Indoor Fan Control Vertical Auto Swing Louver Manual Adjustable Horizontal Swing Louver Sleep Operation...
  • Page 7 ABXEM4H4S24/ABXCI4H4S2 Model No. T1, HP, INVERTER Type Ratings 6850 Cooling Capacity 7620 Heating Capacity 1874 Rated Input-Cooling 2500 Rated Input-Heating Moisture Removal 1200 High m3/h Air Circulation Mid m3/h Low m3/h 3.66 EER for Cooling 3.05 COP for Heating SEER21 Energy Class Cooling HSPF10.5...
  • Page 8 Cooling Setting Temperature 8-30 Range ℃ Heating Setting Temperature 18-30 Range ℃ Cooling Operating -15~46℃ Temperature Range ℃ Heating Operating -20~24℃ Temperature Range ℃ Features Display on Front Panel LCD Wireless Remote Controller Removable and washable Panel Washable PP Filter 24 Hours Timer 3 Speed and Auto Indoor Fan Control Vertical Auto Swing Louver...

  • Page 9: Product Picture And Drawing

    3. Product Picture and Drawing 3-1. Product dimensions Indoor units: Model W (mm) H (mm) D (mm) ABXEM4H4S09 ABXEM4H4S12 ABXEM4H4S18 1131 ABXEM4H4S24 Outdoor units:...

  • Page 10: Installation Instruction

    Model (mm) (mm) (mm) (mm) (mm) (mm) (mm) ABXCI4H4S09 ABXCI4H4S12 ABXCI4H4S18 ABXCI4H4S24 365.5 4. Installation Instruction To prevent abnormal heat generation and the possibility of fire, do not place obstacles, enclosures and grilles in front of or surrounding the air conditioner in a way that may clock air flow.

  • Page 11: Installation Place And Condition

    power lines or connecting wires used for TV, radio, telephone, security system, or intercom. Electrical noise from any of these sources may affect operation. 4-1. Installation Place and Condition Indoor unit Avoid: △ direct sunlight. △ nearby heat sources that may affect performance of the unit. △...
  • Page 12 △ Choose a place as cool as possible. △ Choose a place that is well ventilated. △ Allow enough room around the unit for air intake or exhaust and possible maintenance. (see a1, b1 & c1) △ Provide a solid base (level concrete pad, concrete block, 10 × 40 cm beams or equal), a minimum of 10 cm above ground level to reduce humidity and protect the unit against possible water damage and decreased service life.
  • Page 13 2.5(Power wire)/1.5（Connect wire） 3.15A or 5A（indoor）/20A（outdoor） 22K~30K 2.5(Power wire)/2.5（Connect wire） 3.15A or 5A（indoor）/30A（outdoor）...

  • Page 14: Electric Wiring Diagram

    4-2. Electric Wiring Diagram Model Indoor Unit DIAGRAM Outdoor Unit DIAGRAM ABXEM4H4S09/ABXCI4H4S09 ABXEM4H4S12/ABXCI4H4S12 1984907 1854707 ABXEM4H4S18/ABXCI4H4S18 ABXEM4H4S24/ABXCI4H4S24 Indoor: 1984907...
  • Page 15 Outdoor: 1854707...

  • Page 16: Refrigerant Flow System

    4-3. Refrigerant Flow System NOTE: In different models, the throttle assembly may be Capillary or Electronic expansion valve.

  • Page 17: Air Purging And Leakage Test

    4-4. Air Purging and Leakage Test 1. Connect charging hose of manifold valve to charge end of low pressure valve (both high/low pressure valves must be tightly shut). 2. Connect joint of charging hose to vacuum pump. 3. Fully open the handle of Lo manifold valve. 4.

  • Page 18: Test Running

    4-5. Test Running △ Check after Installation Items to be checked Possible malfunction Has it been fixed firmly? The unit may drop, shake or emit noise. It may cause insufficient Have you done the refrigerant leakage test? cooling(heating)capacity Is heat insulation sufficient? It may cause condensation and dripping.

  • Page 19: Function Operation

    5. Function Operation 5-1. Operation Range (cooling and heating） North America SEER 20 Model（9k-24k）&SEER16 Model（30k、36k） ： Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp 30℃(86°F) 46 ℃(115°F) Maximum COOLING 16℃ (61°F) -15℃(5°F) Minimum 30℃ (86°F) 24℃ (75°F) Maximum HEATING -15℃...
  • Page 20 L1-04...
  • Page 21 Function Instruction △ 1．Major general technical parameters...
  • Page 22 1-1 Remote receiver distance（front of the air conditioner）: 8 m. 1-2 Remote receiver angle: Less than 60 degrees. 1-3 Temperature control accuracy: ±1℃(1°F). 1-4 Time error: Less than 1%.、 2. Functions of the controller 2-1 Display panel I. Control functions of the remote controller (See operating and installation manual) II.
  • Page 23 (2) Timer ON/OFF (3) Timer ON/OFF can be set available in turn. (4) The Timer accurate more than 97% (5) The Timer can be adjusted by 1 min increase. (6) The appliance can be set the ON-Timer and OFF-Timer in the same time, but no any timer setting indicated.
  • Page 24 (based on the remote mode)(the min accuracy is 1℃) up and down base on the automatic temperature setting, also the presetting temperature of PCB circuit. In case of the specific operation selected, it could be re-select the other modes after the compressor ceased for 5 min or the setting temperature changed.
  • Page 25 3-7 Heating-run mode 3-7-1 Temperature compensation The temperature compensation is 5º in heating mode. For example, if the set temperature is 25℃(77°F) by the remote control, when the room temperature is detected with 31℃(88°F), the compressor will turn off. The main reason is that the hot air is condensed at the top of the house. Note: The compensation is available only if the room temperature sensor of indoor unit is used and it is not available when it is subject to the sensor on the remote control.
  • Page 26 When the difference between the setting temperature and the room temperature equal to 2℃ or 4℃, the indoor fan speed will keep in current speed. 3-7-3 Air flow direction control The horizontal louver is controlled by a step motor, press the SWING button to swing or stop the louver.

  • Page 27: Special Function Instruction

    Dehumidifying area I: Operation at the frequency in the range (30–60Hz) according to Dt (T indoor ambient-Test). Dt(℃) f(Hz) ≥2 Dehumidifying area II: The compressor stops for 5 minutes and operators for 5 minutes at the lowest frequency. Dehumidifying area III: The compressor stops. 3-10 Fan Only Mode Operation During the appliance run in this mode, the compressor and outdoor fan stop, the indoor fan operate under the pre-setting of air volume, and the louver swing, and the indoor fan speed same as...
  • Page 28 “anti-freezing frequency decreasing temperature”. Condition 2: in normal operation, the temperature of indoor heat exchanger reaches “anti-freezing prohibition of frequency rising temperature”. Either of the above two conditions is met, the product will enter anti-freezing prohibition of frequency rising state. Anti-freezing prohibition of frequency rising operation: the compressor is kept at the current frequency, which may decrease according to situations while cannot rise.

  • Page 29: Electrical Characteristics

    6. Electrical Characteristics 6-1. Print Circuit Board (Indoor & Outdoor) Model Print Circuit Board of Indoor unit Print Circuit Board of outdoor unit ABXEM4H4S09/ABXCI4H4S09 2009223 ABXEM4H4S12/ABXCI4H4S12 2009223 1878005 ABXEM4H4S18/ABXCI4H4S18 2009223 1841765 ABXEM4H4S24/ABXCI4H4S24 2009223 1924721 Model of indoor unit: 2009223...
  • Page 30 Model of outdoor： OU-PCB-SYD/SVE Terminal of compressor U phase Outdoor ambient temperature sensor Terminal of compressor V phase Terminal of 4-way valve Terminal of compressor W phase Terminal of heater Terminal of DC fan communication wire to terminal block Terminal of electronic expansion valve Terminal of nuetral wire to terminal block Terminal of compressor overload Terminal of live wire to terminal block...
  • Page 31 1841765 Terminal of Terminal of neutral wire, Compressor 4-way valve compressor connect to the discharge terminal U/V/W phase terminal panel temperature sensor "1(N)" Terminal of live Terminal of Terminal of Terminal of wire, connect to electronic compressor reactor the terminal expansion valve overload protector panel "2(L)"...
  • Page 32 1878005 Terminal of Over Terminal of compressor Terminal of AC fan electronic expansion pressure U/V/W phase cool valve terminal valve sensor Outdoor ambient Terminal of reactor DRED Cool Valve terminal temperature Function （optional） sensor Terminal of neutral wire, Outdoor pipe connect to the terminal Heater terminal temperature sensor...
  • Page 33 1924721 Compressor Terminal of Terminal of discharge communication reactor DRED Function temperature sensor wire (YELLOW) Terminal of Outdoor ambient Terminal of live Terminal of AC fan compressor temperature sensor wire (WHITE) (WHITE) (WHITE) Terminal of DC Outdoor pipe Terminal of temperature sensor Cool Valve terminal 18 neutral...

  • Page 34: Fan Motor

    6-2. Fan Motor Drawings attached: Test in resistance. TOOL: Multimeter. Test the resistance of the main winding. The indoor fan motor is fault if the resistance of...
  • Page 35 main winding 0(short circuit)or∞（open circuit）. Test in voltage TOOL: Multimeter. Insert screwdriver into to rotate indoor fan motor slowly for 1 revolution or over, and measure voltage “YELLOW” and “GND” on motor. The voltage repeat 0V DC and 5V DC. Notes: 1) Please don’t hold motor by lead wires.

  • Page 36: Temperature Sensor

    6-3. Temperature Sensor Parameter table attached: 1. THE PARAMETER OF THE INDOOR COIL AND INDOOR ROOM SENSOR ,THE PARAMETER OF THE OUTDOOR COIL AND OUTDOOR SENSOR: （R(0)=15k B(0/100)=3450） Temperature(℃) Resistance(k) Voltage(V) Temperature(℃) Resistance(k) Voltage(V) 38.757 0.58143512 4.292 2.715076661 36.844 0.60795346 4.137 2.76063657 35.038...
  • Page 37 7.051 2.09859271 1.213 4.039284017 6.778 2.14682606 1.177 4.062450215 6.516 2.19524793 1.142 4.085229093 6.267 2.24333597 1.109 4.106941536 6.028 2.29151689 1.076 4.12888601 2.33944954 1.045 4.149715216 5.581 2.38741691 1.015 4.17007359 5.372 2.43506494 0.986 4.189944134 5.172 2.48247664 0.957 4.210004953 4.981 2.52951096 0.93 4.228855721 4.797 2.57653834 0.904 4.247168554...
  • Page 38 138.696 0.23368340 2.328767123 132.086 0.24480509 7.546 2.369998606 125.833 0.25634646 7.301 2.411176512 119.916 0.26831655 7.065 2.452217815 114.315 0.28072493 6.843 2.492120501 109.01 0.29358432 6.624 2.532777116 103.984 0.30690352 6.414 2.573028606 99.222 0.32068816 6.212 2.612972641 94.708 0.33494897 6.017 2.652726847 90.427 0.34969710 5.829 2.692216328 86.366 0.36494000 5.648 2.731362468...

  • Page 39: Compressor

    6-4. Compressor Drawings attached: OVERLOAD PROTECTION INVERTER POWER & CONTROLLER Test in resistance. TOOL: Multimeter. Test the resistance of the winding. The compressor is fault if the resistance of winding 0(short circuit)or∞（open circuit） Familiar trouble: 1)Compressor motor lock. 2）Discharge pressure value approaches static pressure value .3)Compressor motor winding abnormality.

  • Page 40: 6-6.Room Card Control, Fire Protection, On/Off Function

    6-6.Room Card Control, Fire Protection, ON/OFF Function 6-6-1.Instructions for the function setting of room card control, fire protection, ON/OFF function. 1. Factory setting ON/OFF function is tacitly approved to be invalid when out of factory while both the room card control and fire protection functions are valid.
  • Page 41 Pins of the OUT INPUT CN16 socket shown in the electrical wiring diagram of Fig 1 are tacitly approved to be in short circuit state under the factory state (an external short circuit plug shown as Figure 2). (Illustration: the socket number in circuit is subject to the actual serial number of PCB.) When using the room card control, the user cuts off the short wire shown in Figure 2 and connects the red lines to the control switch (supplied by user), and the connecting wire should be 22AWG or above specification.
  • Page 42 Fig.4 YXE-A03U(E) The EE address number of ON/OFF function is 25：first enter the parameter number 17, and then adjust to the EE address number Exhibit 1: Built-in EE settings combination EE DATA Red Line (1+2) White Line (2+3) Void Void Hotel Room Card Control Void Void...

  • Page 43: 6-6-2.Instructions For The Function Setting Of Room Card Control, Fire Protection, On/Off Function

    (5) Operations: In a state of that, the symbol does not flash, and the EE address number 25 flash, press “ENTER” button to enter the EE writing. Result: On display screen, the symbol and the EE address number 25 do not flash, and the function code corresponding to the EE address flashes.
  • Page 44 Fig.2short wiring Fig.3 main control board Fig.4 output line 3 pins of the OUT INPUT CN16 socket shown in the electrical wiring diagram of Figure 1 are tacitly approved to be in short circuit state under the factory state (an external short circuit plug shown as Figure 2), and the OUT INPUT CN16 socket of main control board is shown as Figure 3.
  • Page 45 Fig.5Hardware connection diagram 3.2 Timing sequence description: (1) Room card control: 1) Control of room card disconnection: the air conditioner shall be shut down after the room card control signal is disconnected. In this state, the indoor unit can’t be started. If the user performs starting operation, the wire controller shall not respond and displays power-off.

  • Page 46: 6-7.Wiring Remote Controller

    3.3Relative priorities of instructions ON/OFF function has the highest priority. The room card control shall be invalid when ON/OFF function is effective. The room card control and fire protection can not be selected at the same time, only one can be selected. 6-7.Wiring Remote Controller Model Installation Manual...

  • Page 47: Trouble Shooting

    7.Trouble Shooting 7-1. Error Code Table 1.Indication on the outdoor unit: When the unit has the following trouble and the compressor stops running, The LED of outdoor control board will show the error sequence automatically:  ★： ： ： NOTE: LIGHT FLASH Error...
  • Page 48 a. he EEPROM chip is loose; Outdoor b. the EEPROM chip inserted with opposite EEPROM in ★ ★ ★ direction; trouble c. the EEPROM chip is failure Compressor a. the compressor exhaust temperature sensor is exhaust  failure; ★ temperature too b.
  • Page 49 a. The IPM board is failure; b. The outdoor fan is broken; c. The outdoor fan motor is failure; IPM module   d. The outdoor fan has been blocked ; protection e. The condenser is dirty; f. The outdoor unit has been installed without standard.
  • Page 50  Frequency decreasing prohibition ★ ★ frequency rising caused by too high compressor discharge temperature Limit to the max operating frequency caused by too low power voltage Operation at fixed frequency (in the case of ★ ★ ★ capability measuring or compulsory operation at fixed frequency) ...

  • Page 51: The Outdoor Unit Has Been Installed Without Standard

    Normal a. The outdoor temperature The failure for sensor loose; temperature b. the outdoor temperature sensor of sensor is failure; outdoor coil c. The indoor control board is failure    ★ a. the compressor exhaust Compressor temperature sensor connect exhaust loose;...
  • Page 52  ★ ★ ★ a. the fan motor run abnormally; Current b. the condenser and overload evaporator is dirty; protection c. the air inlet and outlet is abnormally     a. the outdoor control board is short circuit; Maximum b.
  • Page 53 d. the refrigerant system is abnormal. a. the PFC is failure; PFC protection b. the outdoor drive board is failure a. the outdoor drive board is DC compressor failure; start failure b. the compressor is failure     a.

  • Page 54: The Indoor Unit

    a. The indoor room temperature The failure for sensor loose; temperature b. The indoor room temperature ★ sensor of sensor is failure; indoor room c. The indoor control board is failure. a. The indoor coil temperature The failure for sensor loose; temperature b.

  • Page 55: The Outdoor Control Board Is Failure

    Normal a. The outdoor temperature sensor The failure for loose; temperature b. The outdoor temperature sensor  ★ ★ sensor of is failure; outdoor coil c. The indoor control board is failure  ★ a. the compressor exhaust Compressor temperature sensor connect loose; exhaust b.

  • Page 56: The Compressor Exhaust Temperature Sensor Connect Loose

    a. the outdoor control board is short Maximum circuit; current b. the drive board is short circuit; protection c. the other components is short circuit ★ Communication a. the connection wires connect trouble loose between b. the outdoor board or drive outdoor unit board is failure;...

  • Page 57: There Are Something Block The

     ★ a. the outdoor drive board is failure; Compressor b. the compressor is failure drive in trouble c. the outdoor control board is failure  ★ a. the connection of the outdoor fan motor is loose; Outdoor fan b. there are something block the motor locked outdoor fan;...

  • Page 58: The Connection Between The Filter

    the indoor unit b. the communication cable is and outdoor failure; unit c. the connection between the filter board and the outdoor control board is incorrect or loose; d. the connection between the filter board and the terminal is incorrect or loose;...

  • Page 59: Test The Jumper Terminals

    7-2. Test the jumper terminals Note: When the whole machine is powered up, if the external unit does not work, to rule out the communications failures, adopt screening method such as short circuit on the jumper terminals to see if the external unit can be started normally or similar method.
  • Page 60 compressor and outdoor fan stop, but indoor fan runs normally. Condition for ending over-current protection: when the current drops below “current value for releasing the refrigeration current protection (E2 value)”, over-current protection will be released. 2.Frequency decreasing for over-current Conditions for over-current frequency decreasing: if the current is equal to or greater than “current value for starting the refrigeration current protective frequency decreasing (E2 value)”, over-current frequency decreasing starts.

  • Page 61: Trouble Diagnosis Of Compressor

    7-4. Trouble Diagnosis of Compressor Judging the connecting terminals of inverter compressor: It is impossible to identify terminals U, V and W of inverter compressor with multi-meter. Just connect the terminals in the same way as the original unit when replacing the compressor. A wrong connection will lead to reverse and loud noise of the compressor.
  • Page 62 Switch on the power supply Does it receive the Is the remote Does the screen remote controller controller display normally? signal? setting right? Is the fuse (5A/250V) burn? Check the code Is the remote controller in good Replace the batteries condition? Are the wires Make sure all wires...
  • Page 66 DC fan motor test point:...
  • Page 67 Error code 33 Take out the red Indoor connector temperature sensor.Measure the Does the resistance sensor resistance of sensor Replace the of the sensor have indoor control the characteristics on board Take out the white sensor parameter Error code 34 connector Indoor Coil sensor.Meaure the...
  • Page 68 test point: Check the screw of IPM fastening：...
  • Page 69 test point: Forward of IPM P-U/P-V/P-W test : Reverse of IPM P-U/P-V/P-W test: Forward of IPM N-U/N-V/N-W test : Reverse of IPM N-U/N-V/N-W test :...
  • Page 70 test point: The resistance of the compressor U-W\V-W SI and N test point:...

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