Air-Con ABSCI4H4S09 Service Manual
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Air-Con ABSCI4H4S09 Service Manual

Air-Con ABSCI4H4S09 Service Manual

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Joseph Bussiere
June 19, 2025

i AM HAVING A PROBLEM WITH MY UNIT IT SHUTS OFF AND SHOWS ff ON THE DISPLAY

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Summary of Contents for Air-Con ABSCI4H4S09

  • Page 1: Service Manual

    Service Manual...
  • Page 2 This service manual contains information for the following models: Outdoor Units: Indoor Units: ABSCI4H4S09 ABSEM4H4S09 ABSCI4H4S12 ABSEM4H4S12 ABSCI4H4S18 ABSEM4H4S18 ABSCI4H4S24 ABSEM4H4S24 ASRCI4H4S09 ASREM4H4S09 ASRCI4H4S12 ASREM4H4S12 ASRCI4H4S18 ASREM4H4S18 ASRCI4H4S24 ASREM4H4S24 ASPCI4H4S30 ASPEM4H4S30...

  • Page 3: Table Of Contents

    Contents 1. Safety Considerations ......................... 4 2. Product Specifications ......................... 6 3. Product Picture and Drawing ......................14 3-1. Product Pictures ........................14 3-2. Product dimensions ......................... 21 4. Installation Instruction ........................23 4-1. Installation Place and Condition ....................23 4-2.

  • Page 4: Safety Considerations

    7-1. Error Code Table ........................46 7-2. Test the jumper terminals ....................... 54 7-3. Trouble Diagnosis of Protection ....................54 7-4. Trouble Diagnosis of Compressor ..................... 56 7-5. Trouble Diagnosis of Electric Filter Board ................. 56 7-6. Trouble Diagnosis of Electric Communication ................56 1.
  • Page 5 If Necessary, Get Help These instructions are all you need for most installation sites and maintenance conditions. If you require help for a special problem, contact our sales/service outlet or your certified dealer for additional instructions. In Case of Improper Installation The manufacturer shall in no way be responsible for improper installation or maintenance service, including failure to follow the instructions in this document.
  • Page 6 Properly insulate any tubing run inside a room to prevent“sweating” that can cause dripping and water damage to walls and floors. ● In Moist or Uneven Locations Use a raised concrete pad or concrete blocks to provide a solid, level foundation for the outdoor unit. This prevents water damage and abnormal vibration.

  • Page 7: Product Specifications

    2. Product Specifications Model No. ASRCI/EM4H4S09 ASRCI/EM4H4S12 ASRCI/EM4H4S18 ASRCI/EM4H4S24 Type T1, INVERTER T1, INVERTER T1, INVERTER T1, INVERTER Performance Cooling Capacity Btu/h 9,000 12,000 18,000 24,000 Heating Capacity Btu/h 10,000 13,000 20,000 24,500 Rated Input-Cooling 1120 1700 2290 Rated Input-Heating 1110 2000 2280...
  • Page 8 Indoor DC motor Indoor motor power output Indoor motor speed S/H/M/L/Mutter 1250/1100/950 1250/1100/950 1150/990/830 1100/960/800 Outdoor DC motor Outdoor motor power output Indoor motor speed H/M/L Evaporator Evaporator material Copper tube and Aluminum Fin Number of rows Ф7,innergroove Ф7,innergroove Ф7,innergroove Tube outside dia.and type Ф7,innergroove tube tube...
  • Page 9 7/16 7/16 5/16 Outdoor Unit 715×482×240 715×482×240 810x585x280 860x650x310 33 7/8x25 9/16x12 Outdoor Unit in 28 1/8x19x9 7/16 28 1/8x19x9 7/16 31 7/8x23x11 3/16 Indoor Unit 12.5 Net Weight (Kg) Outdoor Unit 27.0 Indoor Unit 800×335×265 870×335×265 1000×390×315 1170×390×315 31 1/2x13 3/16x10 34 1/4x13 3/16x10 46 1/16x15 3/8x12 Indoor Unit in...
  • Page 10 -20℃-24℃; -20℃-24℃; -20℃-24℃; -20℃-24℃; Working Temperature Range - Heating (°C/°F) (-4℉-75℉) (-4℉-75℉) (-4℉-75℉) (-4℉-75℉) Remote Control Adjustable Temperature Range 16℃-30℃; 16℃-30℃; 16℃-30℃; 16℃-30℃; - Cooling (61℉-86℉) (61℉-86℉) (61℉-86℉) (61℉-86℉) Remote Control Adjustable Temperature Range 16℃-30℃; 16℃-30℃; 16℃-30℃; 16℃-30℃; - Heating (61℉-86℉) (61℉-86℉) (61℉-86℉)
  • Page 11 Model No. ABSCI/EM4H4S09 ABSCI/EM4H4S12 ABSCI/EM4H4S18 ABSCI/EM4H4S24 Type T1, INVERTER T1, INVERTER T1, INVERTER T1, INVERTER Performance Cooling Capacity Btu/h 9000 12000 18000 24000 Heating Capacity Btu/h 9500 13000 19000 24500 Rated Input-Cooling 1385 2035 Rated Input-Heating 1130 1595 2080 SEER Cooling 21.5 20.5...
  • Page 12 Voltage, Frequency, 230V~,208V~,60Hz,1P Phase Cooling (A) Rated Current Heating (A) System Compressor type Rotary Rotary Rotary Rotary Compressor MFG Hitachi GMCC GMCC GMCC Compressor model # ASD088RKQA6JT6 ASN108D32UFZ ATM150D43UFZ ATF235D22UMT Expansion Device capillary capillary capillary capillary Indoor DC motor Indoor motor power ioutput Indoor motor speed S/H/M/L 1250/1100/9500...
  • Page 13 x width +813x546x18.19 867×630×18.2 Tube pitch(a)x row pitch(b) 21x18.19 21x18.19 21x18.19 21x18.19 Fin spacing Connecting Pipe Diameter Liquid Pipe inch Gas Pipe inch Others Indoor Unit mm 870×270×214 870×270×214 1148×315×236 1148×315×236 45 3/16x12 13/16x9 45 3/16x12 13/16x9 Indoor Unit in 34 1/4x11x8 11/16 34 1/4x11x8 11/16 Net Dimensions...
  • Page 14 LCD Wireless Remote Controller "I feel" in remote controller Back lighting remote controller -15°C (5°F) Heating -15°C (5°F) Cooling -15℃-46℃; -15℃-46℃; -15℃-46℃; -15℃-46℃; Working Temperature Range - Cooling (°C/°F) (5℉-115℉) (5℉-115℉) (5℉-115℉) (5℉-115℉) -20℃-24℃; -20℃-24℃; -20℃-24℃; -20℃-24℃; Working Temperature Range - Heating (°C/°F) (-4℉-75℉) (-4℉-75℉) (-4℉-75℉)
  • Page 15 Healthy Filter(catechins,VC,HEPA,jasmine aroma filter) Optional Optional Optional Optional Wired control Optional Optional Optional Optional Model No. ASPCI4H4S30 Type T1, INVERTER Performance Cooling Capacity Btu/h 30000 Heating Capacity Btu/h 31000 Rated Input-Cooling 2900 Rated Input-Heating 2700 SEER Cooling 18.8 HSPF Heating 12.3 EER for Cooling Btu/W...
  • Page 16 Compressor type Rotary Compressor MFG Hitachi Compressor Model # ATL253UDPC9AUL Expansion Device Capillary Indoor DC motor Indoor motor power output 1150/1000/850 Indoor motor speed S/H/M/L/Mutter Outdoor DC motor Outdoor motor power output 850/550/500 Indoor motor speed H/M/L Evaporator Evaporator material Number of rows Ф7,innergroove tube Tube outside dia.and type...
  • Page 17 Indoor Unit mm 1280x360x260 50 3/8x14 3/16x10 Indoor Unit in Net Dimensions Outdoor Unit WxHxD 885×795×366 34 7/8x31 5/16x14 Outdoor Unit in Indoor Unit 19.5 Net Weight (Kg) Outdoor Unit Indoor Unit mm 1385x435x325 54 1/2x17 1/8x12 Indoor Unit in 13/16 Packing Dimensions Outdoor Unit...
  • Page 18 0℃-46℃; Working Temperature Range - Cooling (°C/°F) (32℉-115℉) -20℃-24℃; Working Temperature Range - Heating (°C/°F) (-4℉-75℉) Remote Control Adjustable Temperature Range - 16℃-30℃; Cooling (61℉-86℉) Remote Control Adjustable Temperature Range - 16℃-30℃; Heating (61℉-86℉) 8°C (46°F) Heating to avoid freezing water pipe in Kitchen °C &...

  • Page 19: Product Picture And Drawing

    3. Product Picture and Drawing 3-1. Product Pictures Indoor units: Front Panel ASREM4H4S09 – ASREM4H4S24 View Front Panel ABSEM4H4S09 – ABSEM4H4S24 View Front Panel ASPEM4H4S30 View...
  • Page 20 Outdoor Units: Unit All Models View Remote controller: Model All Models View...

  • Page 21: Product Dimensions

    3-2. Product dimensions Indoor units: Model WXHXD (mm) ASREM4H4S09 745×270×214 ASREM4H4S12 815×270×214 ASREM4H4S18 915×315×236 ASREM4H4S24 1085×315×236 ABSEM4H4S09 870×270×214 ABSEM4H4S12 870×270×214 ABSEM4H4S18 1148×315×236...

  • Page 22: Outdoor Units

    ABSEM4H4S24 1148×315×236 ASPEM4H4S30 1280x360x260 Outdoor units: Model (mm) (mm) (mm) (mm) (mm) (mm) (mm) ASRCI4H4S09 ASRCI4H4S12 ASRCI4H4S18 ASRCI4H4S24 ABSCI4H4S09 ABSCI4H4S12...

  • Page 23: Installation Instruction

    ABSCI4H4S18 ABSCI4H4S24 ASPCI4H4S30 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. And, more than 1 meter away from any antenna or power lines or connecting wires used for TV, radio, telephone, security system, or intercom.

  • Page 24: Outdoor Unit

    table 1 Standard Max. Additional Pipe Size Max. Capacity Length Length Elevation Refrigerant (Btu/h) LIQUID A (m) B (m) (g/m) 3/8"(Ø9.52) 1/4"(Ø6.35) 5k~14k 1/2"(Ø12.7) 1/4"(Ø6.35) 1/2"(Ø12.7) 1/4"(Ø6.35) 18k~28k 5/8"(Ø15.88) 1/4"(Ø6.35) 5/8"(Ø15.88) 3/8"(Ø9.52) 5/8"(Ø15.88) 3/8"(Ø9.52) 30k~38k 3/4"(Ø19.05) 3/8"(Ø9.52) * If total tubing length becomes 7.5 to 15 m (max.), charge additional refrigerant as the table1 for reference.
  • Page 25 △ 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 26: Electric Wiring Diagram

    4-2. Electric Wiring Diagram Indoor Unit Outdoor Unit Model DIAGRAM DIAGRAM 1854605 1854707 ASRCI/EM4H4S09 1854605 1854707 ASRCI/EM4H4S12 1854605 1854707 ASRCI/EM4H4S18 1854698 1854707 ASRCI/EM4H4S24 1854605 1854707 ABSCI/EM4H4S09 1854605 1854707 ABSCI/EM4H4S12 1854698 1854707 ABSCI/EM4H4S18 1854698 1854707 ABSCI/EM4H4S24 1854698 1854707 ASPCI/EM4H4S30...
  • Page 27 Indoor: 1852066 1854605...
  • Page 28 1854698...
  • Page 29 Outdoor: 1854707...

  • Page 30: Refrigerant Flow System

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

  • Page 31: 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 32: 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 33 Has the unit been connected to a secure earth It may cause electrical leakage. connection? It may cause electric malfunction or damage the Is the power cord specified? part. It may cause insufficient Are the inlet and outlet openings blocked? cooling(heating)capacity.

  • Page 34: Function Operation

    5. Function Operation 5-1. Operation Range (cooling and heating） North America SEER 17 Model： Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp 30℃ 46 ℃ Maximum COOLING 16℃ 16℃ Minimum 30℃ 24℃ Maximum HEATING -20℃ Minimum North America SEER 21 Model： Temperature Indoor Air Intake Temp.
  • Page 35 △ Function Instruction 1．Major general technical parameters 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℃. 1-4 Time error: Less than 1%.、 2. Functions of the controller...
  • Page 36 2-1 Display panel I. Control functions of the remote controller (See operating and installation manual) II. Display of the indoor unit Information on the screen: Displaying Scheme: 7-segment tube：Display set temperature or indoor temperature , and display fault code in trouble indicating.
  • Page 37 unit has not received a remote signal within 30 minutes, the room temperature will depend on the room temperature sensor of indoor unit. 3-3 Timer function Real time of Timer setting (1) The max Timer ranges is 24 hours. (2) Timer ON/OFF (3) Timer ON/OFF can be set available in turn.
  • Page 38 When the appliance operates at the smart, the air flow direction can be adjusted. (1) H/C appliance a. When the setting temperature is 26℃, the appliance will be ran in the Cool if the room temperature exceeds 26℃. b. When the room temperature exceeds 23℃, but below 26℃, it will be ran in the Dry mode(It will turn in Automatic setting After 3 min LOW air volume running.).
  • Page 39 speed will run at Low setting. After that, temperature and fan speed is shown as following. 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. 3-6-3 Air flow direction control The louver is derived by a step motor, and it swings the horizontal louver automatically.
  • Page 40 and it is not available when it is subject to the sensor on the remote control. 3-7-2 Indoor fan motor operation Anti-cold air system: When the appliance run in Heat mode condition, the indoor fan motor operation is shown as following to prevent the cooling air come out during the appliance operation.
  • Page 41 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 42 3-9 Dehumidifying mode The dehumidifying mode is illustrated as follows: Dehumidifying area I: Operation at the frequency in the range (30–60Hz) according to Dt (T indoor ambient Dt(℃) f(Hz) ≥2 Dehumidifying area II: The compressor stops for 5 minutes and operators for 5 minutes at the lowest frequency.

  • Page 43: Special Function Fnstruction

    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 the Heating Mode. 5-3.

  • Page 44: Electrical Characteristics

    Conditions for ending defrosting: Defrosting is over if either of the below conditions is met. A：The accumulated time of defrosting is longer than 12 minutes (EEPROM setting value in the current operating mode); B：If the temperature of coiled pipe is equal to or higher than 14 degrees centigrade (EEPROM setting value in the current operating mode);...
  • Page 45 Interface of PG motor Room temperature sensor Pipe temperature sensor Switch button Feedback from PG motor Up＆down swing Left＆right swing Wiring control or wifi interface Display interface 10 Protective tube ASREM4H4S24、 ABSEM4H4S18、 ABSEM4H4S24、 Interface of PG motor Room temperature sensor Pipe temperature sensor Switch button Up＆down swing...
  • Page 46 Interface of PG motor Room/and Pipe temperature sensor Switch button swing Protective tube Model of outdoor unit: ASRCI4H4S09、ASRCI4H4S12、ABSCI4H4S09...
  • Page 47 ASRCI4H4S18、ASRCI4H4S24、ABSCI4H4S12、ABSCI4H4S18、...
  • Page 48 Terminal of Terminal of neutral Compressor 4-way valve compressor wire,connect discharge terminal U/V/W phase to the terminal temperature sensor panel "1(N)" Terminal of Terminal of live Terminal of Terminal of compressor wire,connect electronic reactor overload to the terminal expansion valve protector panel "2(L)"...
  • Page 49 Compressor Terminal of discharge Terminal of reactor DRED Function communication wire temperature sensor Outdoor ambient Terminal of temperature Terminal of AC fan 17 Terminal of live wire compressor sensor Outdoor pipe Terminal of DC temperature Cool Valve terminal Terminal of neutral sensor Terminal of Heat Sink...

  • Page 50: Fan Motor

    6-2. Fan Motor Drawings attached:...
  • Page 51 Test in resistance. TOOL: Multimeter. Test the resistance of the main winding. The indoor fan motor is fault if the resistance of 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”...
  • Page 52 3)Please don’t drop hurl or dump motor against hard material. Malfunction may not be observed at early stage after such shock. But it may be found later, this type of mishandling void our warranty. Indoor DC Fan Motor Outdoor DC Fan Motor Outdoor DC Fan Motor...

  • Page 53: 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 54 27.392 0.78480857 3.335 3.023117961 26.103 0.81722911 3.219 3.065272268 24.882 0.85051031 3.108 3.106725146 23.727 0.88458737 3.001 3.147759536 22.632 0.91951536 2.899 3.187898487 21.594 0.95527085 2.801 3.227439565 20.611 0.99179340 2.706 3.266717909 19.678 1.02913875 2.615 3.305249514 18.794 1.06721353 2.528 3.342947037 17.954 1.10609872 2.444 3.380169671 17.158 1.14565549 2.363...
  • Page 55 7.951 1.95387327 1.328 3.967019291 7.637 2.00204130 1.289 3.991234935 7.337 2.05033368 1.25 4.015748031 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...
  • Page 56 388.213 0.08607312 15.822 1.502961719 367.625 0.09080590 15.241 1.542579738 348.264 0.09575738 14.684 1.582573078 330.048 0.10093573 14.151 1.622834232 312.904 0.10634837 13.64 1.663405088 296.761 0.11200385 13.151 1.704175229 281.556 0.11790981 12.682 1.745200698 267.227 0.12407536 12.233 1.78637104 253.72 0.13050821 11.802 1.827760456 240.982 0.13721739 11.388 1.869364416 228.965 0.14421140 10.992...
  • Page 57 94.708 0.33494897 6.017 2.652726847 90.427 0.34969710 5.829 2.692216328 86.366 0.36494000 5.648 2.731362468 82.512 0.38068793 5.474 2.770083102 78.854 0.39694585 5.306 2.808524698 75.381 0.41372093 5.144 2.846617549 72.082 0.43102355 4.988 2.884289108 68.948 0.44885674 4.837 2.921715219 65.968 0.46723835 4.692 2.958579882 63.136 0.48615877 4.552 2.995066949 60.443 0.50562884 4.417...

  • Page 58: Compressor

    28.264 0.96965549 2.678 3.587254695 27.162 1.00111890 2.609 3.613561484 26.109 1.03315203 2.542 3.639477628 25.103 1.06573050 2.477 3.664977902 24.142 1.09883007 2.414 3.6900369 23.223 1.13246511 2.353 3.714629083 22.345 1.16658089 2.294 3.738728832 21.505 1.20120120 2.237 3.762310501 20.701 1.23631868 Note: the AD value in the table is calculated on the basis of the pull-down resistor is 6.8K. 6-4.

  • Page 59: Electric Reactor

    Familiar trouble: 1)Compressor motor lock. 2）Discharge pressure value approaches static pressure value .3)Compressor motor winding abnormality. Notes：1）Don’t put a compressor on its side or turn over. 2) Please assembly the compressor in your air conditioner rapidly after removing the plugs.Don’t place the comp.

  • Page 60: 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 ´...
  • Page 61 a.the fan motor run abnormally; Current overload ★ b.the condensor and evaporator is dirty; protection c.the air inlet and outlet is abnormally a.the outdoor control board is short circuit; Maximum current ★ ★ b.the drive board is short circuit; protection c.the other components is short circuit Communication a.
  • Page 62 unit a.the outdoor drive board is failure; Compressor drive b.the compressor is failure in trouble c. the outdoor control board is failure a.the connection of the outdoor fan motor is loose; Outdoor fan motor b.there are something block the outdoor fan; ★...
  • Page 63 DC compressor a.the outdoor drive board is failure; start failure b.the compressor is failure Outdoor ambient ★ temperature too a、Outdoor ambient temperature too low low protection Mark description: the lights flash every two seconds for the following faults a. Radiator sensors fail Protection against Ο...
  • Page 64 ★ ★ ★ Operation at fixed frequency (in the case of capability measuring or compulsory operation at fixed frequency) Ο × × Protective frequency decreasing against outdoor overload (overpower, over frequency conversion rate, over torque, detection of DC under-voltage) × ×...
  • Page 65 Refer to the remote controller which the sleep key can set into 4 different combination ways (Hisense's new design remote controller), when using to check the error codes only takes effect for pressing the sleep key 10 times in ten seconds instead of 4 times. NOTE: If the troubleshooting inquiry display by 7-segment tube, then the error code will be displayed, otherwise only the LED of the display board can show.
  • Page 66 the unit is higher or lower than normal Ο × ★ ★ a.the communication cable connect loose; b.the communication cable is failure; c.the connection between the filter board and the outdoor control Communicatio board is incorrect or loose; n failure between the d.the connection between the filter indoor unit and...
  • Page 67 × Ο ★ ★ Outdoor ambient Outdoor ambient temperature temperature too low too low protection × Ο × ★ Compressor a.the compressor exhaust exhaust temperature sensor is failure; temperature b.the refrigerant of the unit is too high not enough protection ×...
  • Page 68 failure × × Ο ★ a.the connection of the outdoor fan motor is loose; Outdoor fan b.there are something block motor locked the outdoor fan; rotor c.the fan motor is failure; protection d.the outdoor control board is failure a.the refrigerant is too much; b.the outdoor fan motor is Outdoor coil failure;...
  • Page 69 c. The indoor control board is failure. a. The indoor coil temperature The failure for sensor loose; temperature b. The indoor coil temperature ★ sensor of sensor is failure; indoor coil c. The indoor control board is temperature failure. Ο ×...

  • Page 70: Test The Jumper Terminals

    protective The failure is detected when the room temperature sensor broken or shorted over 5 sec. The failure is detected when the temperature sensor of heater exchange broken or shorted over 5 sec. The failure is detected when each setting data is not match after the EEPPOM self-check two times. The failure is occur when the grounding signal is not detected after the appliance power ON.
  • Page 71 1.Conditions for protection against AC input over-voltage/under-voltage: If the input AC voltage is greater than “protective over-voltage value” or less than “protective under-voltage value” for five seconds, over-voltage/under-voltage protection tarts. 2.Protection actions against AC input over-voltage/under-voltage The system stops operation. 3.

  • Page 72: Trouble Diagnosis Of Compressor

    the compressor drops below X4℃. Condition 2: in normal operation, the discharge temperature of compressor reaches X5℃. Either of the above two conditions is met, prohibition of frequency rising of compressor discharge begins. Actions relates to prohibition of frequency rising of compressor discharge: the frequency of compressor maintains at the current level, which may decrease as the case requires while cannot rise.

  • Page 73: Trouble Diagnosis Of Electric Filter Board

    7-5. Trouble Diagnosis of Electric Filter Board Visual examination: as the circuit is simple, the connection may be checked visually to see whether any loose or poor connection. Voltage test: the voltage at the input end shall be the same as the voltage at the output end. 7-6.
  • Page 74 Air-Con International, Inc. 1802 SW 2nd St Pompano Beach, FL 33069 Tel: 954-771-1415 Fax: 954-771-1418...

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