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Vivax cool ACP-18CH50GEK Service Manual

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ENG
Service
manual
ACP-18CH50GEK
RoHS

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Summary of Contents for Vivax cool ACP-18CH50GEK

  • Page 1 Service manual ACP-18CH50GEK RoHS...
  • Page 3 ACP-18CH50GEK/I ACP-18CH50GEK/O...
  • 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 ACP-18CH50GEK ACP-18CH50GEK/I...
  • Page 6 ACP-18CH50GEK/O...
  • Page 7 32 33 34 35 36 37 38 39 40 41 42 43 44 45 Outdoor temp.( Outdoor temp.(...
  • Page 9 GAS SIDE 3-WAY VALVE 4-Way valve Muffler Di s charge HEAT EXCHANGE (EVAPORATOR) Accumlator Suction COMPRESSOR HEAT EXCHANGE (CONDENSER) LIQUID SIDE 2-WAY VALVE i a r t r e n Capillary i a r t r e n COOLING HEATING...
  • Page 10 Color symbol Symbol Parts name WHITE GREEN OVERLOAD COMP YELLOW BROWN COMPRESSOR BLUE PROTECTIVE-EARTH YEGN GREEN-YELLOW BLACK VIOLET ORANGE Model: ACP-18CH50GEK/I BN(BK) BU(WH) ROOM TEMP. TUBE TEMP. RECEIVER AND YEGN(GN) SENSOR DISPLAY BOARD SENSOR MAGNETIC POWER DISPLAY RING EARTH-PLATE YEGN YEGN...
  • Page 11 Model: ACP-18CH50GEK/O...

  • Page 12: Top View

    Model: ACP-18CH50GEK/I TOP VIEW Part Name Control connector COMP of outdoor AC contactor and control relay K2 Interface of neutral wire Control interface of indoor fan Drive capacitor of indoor fan Auto button Signal feedback interface of indoor fan Control interface of swing motor...

  • Page 13: Timer Off

    ON/OFF Press it to start or stop operation. MODE Press it to select operation mode (AUTO/COOL/DRY/FAN/HEAT). Press it to increase temperature setting. Press it to decrease temperature setting. Press it to set fan speed. Press it to set swing angle. TIMER ON Press it to set auto-on timer.

  • Page 14: Digital Display

    LIGHT icon: is displayed by pressing the LIGHT button.Press LIGHT button again to clear the display. LOCK icon: is displayed by pressing "+" and “-” buttons simultaneously.Press them again to clear the display. SET TIME display: After pressing TIMER button, ON or OFF will blink.This area will show the set time. TURBO icon: is displayed when pressing theTURBO button.Press this button again to clear the display.

  • Page 15: Replacement Of Batteries

    TIMER ON: Press this button to initiate the auto-ON timer. To cancel the auto-timer program, simply press this button again. After pressing this button, disappears and "ON" blinks . 0 0:00 is displayed for ON time setting. Within 5 seconds, press + or - button to adjust the time value.
  • Page 16 1Temperature Parameters Indoor preset temperature (Tpreset) Indoor ambient temperature (Tamb.) 2 Basic Functions (The temperature in this manual is expressed by Centigrade. If Fahrenheit is used, the switchover between them is Tf=TcX1.8+32.) Once the unit is energized, the compressor shall never be restarted except 3mins interval at least. For the first energization, if the unit is at off status before power failure, the compressor can be restarted without 3-min delay.
  • Page 17 When Tamb. Tpreset+2 , the unit starts drying and cooling operation. In this case, the compressor and outdoor fan operates and the indoor fan operates at low speed. When Tpreset-2 ≤Tamb. ≤Tpreset+2 , the unit will start drying operation. In this case, the indoor fan operates at low speed, and the compressor and the outdoor fan operate 6 minutes and stop 4 minutes in cycle.
  • Page 18 Protection Functions Overheating Prevention Protection If the evaporator tube temperature overheats, the outdoor fan stops operation. When the tube temperature resumes normally, the outdoor fan resumes operation. Noise Silencing Protection If the unit is turned off by pressing ON/OFF button or during mode switchover, the 4-way valve stops after 2 minutes. (4 Fan mode In fan mode, indoor fan operates at setting speed while the compressor, outdoor fan, 4-way valve and electric heating tube stop operation.

  • Page 19: Special Functions

    If swing function has not been set after startup of the unit, up & down horizontal louver will clockwise turn to position D in HEAT mode, or clockwise turn to level position L in other modes. If setting swing function while starting up the unit, the horizontal louver will swing between L and D. There are 7 kinds of swing status of horizontal louver: Positions L, A, B, C and D, swing between Land D and stop at any position between L and D (angles between L and D are equiangular).
  • Page 22 Space to the ceiling 15cm Above Space to the wall 15cm Above 15cm Above Space to the wall 300cm 250cm Above Above Air outlet side Space to the floor The dimensions of the space necessary for correct installation of the appliance including the minimum permissible distances to adjacent structures Space to the obstruction Air inlet side...
  • Page 23 Above 150 from the celling Space Space to the to the wall wall above above Unit:mm Outdoor Indoor Wall pipe Seal pad outlet pipe of indoor unit outlet pipe of drain hose indoor unit rubber belt outlet pipe of drain hose indoor unit rubber belt insulating tube...

  • Page 24: Torque Wrench

    Wiring Cover brown violet blue black violet orange (red) yellow- yellow- green green outdoor unit connection outdoor unit connection External connection side piping electric wire Liquid side piping Tailing 2 Gas side piping Tailing 1 Liquid side insulation Piping insulation Fig.7 Finally wrap it Water drainage pipe...
  • Page 25 handle N(1) 2 blue black violet orange yellow- violet green (red) yellow- green Indoor unit Indoor unit connection connection Manometer -76cmHg High-pressure Low-pressure valve (Hi) closed valve (Lo) Open Charging hose Liquid valve Vacuum Gas valve pump Drain-water hole Bottom frame Drain plug Drain connecter Hose (available commercially,...
  • Page 27 Fig. a Fig. b Air filter Healthy filter Fig. c...
  • Page 29 Model: ACP-18CH50GEK/I ON OFF MODE CLOCK TIMER ON X-FAN TEMP TIMER OFF TURBO SLEEP LIGHT...
  • Page 30 ACP-18CH50GEK/I...
  • Page 31 ACP-18CH50GEK/O...
  • Page 32 ACP-18CH50GEK/O...
  • Page 33 Troubleshooting Procedure Confirmation Judgement by Flashing LED of Indoor/Outdoor Unit How to Check Simply the Main Part...
  • Page 35 Start Is the wiring terminal between temperature sensor and the controller loosened or poor ly contacted? Insert the temperature sensor tightly Malfunction is eliminated. Is there short circuit due to trip over of the parts Make the parts up right Malfunction is eliminated.
  • Page 36 “H6”is displayed on the unit. Stir the fan blade with a hand when the unit is DE - ENERGIZED . Reinstall the motor Does the and the blade to blade rotate make it rotate unsmoothly? smoothly. Is the malfunction eliminated? Is the feedback Insert the feedback...
  • Page 37 C5 is displayed on the unit. Install a matching Is there jumper cap on the jumper cap . controller? Is the malfunction eliminated? Re-insert the jumper Is the jumper cap inserted incorrectly or improperly? Is the malfunction eliminated? Replace the jumper Is the malfunction eliminated?
  • Page 38 “ U8 ” is displayed on the unit . Re-energize1 minute after de-erergization The unit returns to normal. Conclusion:U8 is displayed due Is “U8” still to instant energization afte de- displayed ? energization while the capaci- tor discharges slowly. The zero-cross detection circuit of the mainboard is defined abnormal .
  • Page 39 Start Normal fluctuation is within 10 % of the rated voltage on the Is the supply voltage unstable with big fluctuation? Malfunction is eliminated. nameplate Is the supply voltage too low with overload? Adjust the supply voltage to maintain it within normal range Malfunction is eliminated.

  • Page 40: Appendix 1: Resistance Table For Indoor And Outdoor Ambient Temperature Sensors (15K)

    Appendix 1: Resistance Table for Indoor and Outdoor Ambient Temperature Sensors (15K) Temp. Temp. kΩ kΩ Temp. kΩ Temp. kΩ Resistance Resistance Resistance Resistance 138.1 18.75 3.848 1.071 128.6 17.93 3.711 1.039 121.6 17.14 3.579 1.009 16.39 3.454 0.98 108.7 15.68 3.333 0.952...
  • Page 41 Appendix 2: Resistance Table for Indoor and Outdoor Tube Temperature Sensor (20K) kΩ kΩ kΩ kΩ Temp. Temp. Temp. Resistance Temp. Resistance Resistance Resistance 181.4 25.01 5.13 1.427 171.4 23.9 4.948 1.386 162.1 22.85 4.773 1.346 153.3 21.85 4.605 1.307 20.9 4.443 1.269...
  • Page 42 Appendix 3: Resistance Table for Outdoor Discharge Temperature Sensor (50K) kΩ kΩ kΩ Temp. kΩ Temp. Temp. Resistance Temp. Resistance Resistance Resistance 853.5 18.34 4.754 799.8 93.42 17.65 4.609 89.07 16.99 4.469 703.8 84.95 16.36 4.334 660.8 81.05 15.75 4.204 620.8 77.35 15.17...
  • Page 43 Warning Be sure to wait for a minimum of 10 minutes after turning off all power supplies before disassembly. 1. Before disassembly 2. Remove the filter panel Open the panel. Push the filter inward and then raise it to remove it. filter...
  • Page 44 3. Remove horizontal louver Remove axile bush of horizontal louver. Bend the horizontal louver slightly to remove horizontal louver 4. Remove front panel Open the front panel and loosen the clasp in the middle of the panel. Slide the rotor shaft out of the groove.
  • Page 45 5. Remove electric box cover Remove the screws fixing the electric box cover. electric box cover Remove the electric box. 6. Remove front case Open the screw cap on the front case. Remove the screws fixing the front case. Hooks Loosen the left, middle and right clasps.
  • Page 46 Left Center Right Remove the front case. 7. Remove vertical louver Loosen the 10 clasps connecting vertical louver with bottom case. Hooks Remove the vertical louver. emove electric box Heat exchanger thermistor Disconnect the indoor pipe temperature sensor.
  • Page 47 Screw Earth Wire Remove the 2 screws at the joint of ground wire and evaporator. Remove the clasp connecting electric box cover and electric box. Fan motor signal wire Disconnect the connecting wire of the motor. Remove the screw fixing the display. Remove the display.
  • Page 48 electric box Remove the electric box. 9. Remove press plate of connecting pipe Auxiliary Piping Pipe Clamp Remove the screw fixing the press plate of the connecting pipe. Remove the press plate of the connecting pipe. 10. Remove the evaporator Remove the 3 screws at the joint of the evaporator and bottom case.
  • Page 49 Auxiliary Piping Adjust the pipe of evaporator. Remove the evaporator. Heat Exchanger 11. Remove cross flow blade and motor Step Motor Remove the 2 screws fixing the step motor. Remove the step motor. Motor Press Plate Remove the 4 screws fixing the press plate of the motor.
  • Page 50 Remove cross flow blade and motor. D-Gasket sub-assy of Bearing Remove ring of bearing. Ring of Bearing Cross Flow Fan Remove the screws at the joint of cross flow Fan Motor blade and motor. Remove the motor.
  • Page 51 Warning Be sure to wait for a minimum of 10 minutes after turning off all power supplies before disassembly. Step s Procedur e 1. Before dis a s s embl y 2 . R e mo ve ha nd l e Remove the screws fixing the hanging handle ring.
  • Page 52 Procedur e Step s 4. Remove front panel and rear guard grille rear guard grille screw panel Remove the screws fixing the front panel and back grille. Remove the front panel and back grille. screw screw 5. Remove ri gh t side plate right side plate Remove the screws connecting the panel, chassis and motor support.
  • Page 53 Step s Procedur e 7. Remove mot o r and motor s upp ort motor support Remove the screws of the motor and motor support. Remove the motor and motor sup- motor port. screws 8. Remove electric box Remove the 2 screws fixing the electric box subassembly.
  • Page 54 Procedur e Step s 10. Remov e so len o id co il Remove the screw of the magnetic coil. Remove the magnetic coil. 1 1 . Remov e compressor 4-way valve assy Discharge the refrigerant. Solder off the pipe connecting the compressor (including 4-way compressor valve, compressor, condenser, gas valve a-...
  • Page 55 Step s Procedur e 12. Remov e is olati on sh eet Remove the 3 screws fixing the middle isolation sheet. Remove the middle is- olation sheet. 13. Remov e va lve sup port an d cond ens er Remove the screw fixing the valve support. Remove the valve support.