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Gree GWH09TB-D3DNA1A Service Manual
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Gree GWH09TB-D3DNA1A Service Manual

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Change for Life

Service Manual

GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI

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Summary of Contents for Gree GWH09TB-D3DNA1A

  • Page 1: Service Manual

    Change for Life Service Manual GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI...
  • Page 5 MODE ON/OFF...
  • Page 12 09K 12K Cooling Heating Condition Condition Indoor:DB 70°F Indoor:DB 80.6°F WB66.2°F Indoor air flow: Super High Indoor air flow: Super High Pipe length:24.6ft Pipe length:24.6ft Compressor Frequency(Hz) Compressor Frequency(Hz) Cooling Heating Condition Condition Indoor:DB 70°F Indoor:DB 80.6°F WB66.2°F Indoor air flow: Super High Indoor air flow: Super High Pipe length:24.6ft Pipe length:24.6ft...
  • Page 13 Cooling Heating Condition Condition Indoor:DB 70°F Indoor:DB 80.6°F WB66.2°F Indoor air flow: Super High Indoor air flow: Super High Pipe length:24.6ft Pipe length:24.6ft Compressor Frequency(Hz) Compressor Frequency(Hz) Conditions Conditions Indoor:DB80°F/WB66.9°F Indoor:DB70°F Outdoor:DB95°F Outdoor:DB19.94°F/WB19.04°F Indoor air flow:Super High Indoor air flow:Super High Pipe length:24.6 ft Pipe...
  • Page 14 Cooling Heating Indoor side noise when blowing Outdoor side noise Outdoor side noise Right Right side side Front Front Middle High Indoor fan motor rotating speed Compressor frequency/Hz Compressor frequency/Hz Cooling Heating Indoor side noise when blowing Outdoor side noise Outdoor side noise Right Right...

  • Page 19: Indoor Unit

    Outdoor unit Indoor unit Gas pipe side Valve 4-Way valve Di s charge Heat Accumlator Suction exchanger Compressor (evaporator) Heat exchanger Liquid pipe (condenser) side Valve Strainer Electron Strainer expansion valve COOLING HEATING Indoor unit Outdoor unit Gas pipe side Valve 4-Way valve Di s charge...

  • Page 20: Printed Circuit Board

    (opti o nal ) ROOM TEMP. TUBE TEMP. RECEIVER FAN MOTOR SENSOR SENSOR DISPLAY BOARD CONNECTOR MANUAL PANEL TERMINAL ROOM TUBE DISP1 DISP2 DC-MOTOR COM-INNER1 BLOCK N(1) N(1) COM-OUT AC-L PRINTED CIRCUIT BOARD JUMP CABLE YEGN YEGN SWING-LR SWING-UD1 SWING-UD2 EVAPORATOR YEGN ELECTRIC BOX...
  • Page 21 COMP TUBE OUTROOM EXHAUST COMP TEM.SENSOR TEM.SENSOR TEM.SENSOR YEGN YEGN COMP-U COMP-V COMP-W INDOOR UNIT OVC-COMP N(1) N(1) COMU AC-L1 OFAN1 YEGN TERMINAL HEAT-L AC-L2 LX-2 HEAT-N1 HEAT-N2 BLOCK LX-1 POWER HEATER HEATER (COMP) (CHASSIS) FAN MOTOR WARNING Please don't touch any terminal when the COMP.
  • Page 22 WARNING Please don't touch any terminal when the COMP. voltage of terminal P(DC+) and N(DC-) at AP1 is higher than 30V to prevent the risk YEGN U(R) COMP of electrical shock! OUTTUBE DISCHARGE OUTROOM V(S) W(C) MAGNETIC 4-WAY TEMP. SENSOR TEMP.
  • Page 24 Input of neutral Interface 1 of Neutral wire of electric Live wire of 4-way 13 Temp sensor wire of power electric reactor heater of chassis valve Input of live Interface 2 of Neutral wire of electric Live wire of electric U,V,W three phases wire of power electric reactor...
  • Page 25 Compressor overload Compressor interface Temperature sensor Electric expansion valve protector Communication interface Fan HALL interface Outdoor fan 4-way valve with indoor unit Live wire Earthing wire Neutral wire Reactor interface 1 PFC capacitor interface 1 Reactor interface 2...
  • Page 27 ON/OFF button FAN button MODE button +/- button TURBO button button button CLOCK button TIMER ON/ TIMER OFF button TEMP button button (before opening cover (after opening cover I FEEL button ON/OFF button LIGHT button FAN button X-FAN button QUIET button MODE button SLEEP button +/- button...
  • Page 28 ATUO Low fan Medium-low fan Medium fan Medium-high fan High fan AUTO COOL HEAT...
  • Page 31 battery reinstall remove Cover of battery box...
  • Page 32 Start cooling Tamb. Tpreset Previous running status Tpreset –3˚C(5ºF~6ºF) Stop cooling ≥ 6 min. ≥ 3 min. ≥ 6 min. Compressor Outdoor fan Set fan speed Indoor fan Stop Tamb. Start cooling Tpreset Previous running status Tpreset –2˚C(3ºF~4ºF) Stop cooling ≥...
  • Page 33 Start heating Tpreset +5˚C(9ºF~10ºF) Previous running status Tpreset +2˚C(3ºF~4ºF) Tamb. Start heating 6 min. 3 min. 6 min. Compressor Blow residual Outdoor unit Blow residual heat heat Indoor unit 2 min. 2 min. 4-way valve Stop Heating mode Tpreset Keep current Cooling mode, =20ºC (68ºF)(if cooling-only unit, it is Fan mode,...
  • Page 34 Tamb. 11ºC(51ºF) 9ºC(48ºF) High Med. Fan speed Tamb. 31ºC(87ºF) Tpreset + 3ºC(5ºF~6ºF) reset + 1ºC(1ºF~2ºF) High Super high Med. Fan speed...
  • Page 35 Tamb. Tpreset +4ºC(7ºF~8ºF) Tpreset +2ºC(3ºF~4ºF) Tpreset -3ºC(5ºF~6ºF) Mute Med. High Fan speed Tamb. Tpreset +3ºC(5ºF~6ºF) Tpreset Tpreset -2ºC(3ºF~4ºF) High Med. Mute Fan speed...
  • Page 36 This position is start point 0 °...
  • Page 38 1. Compensation function of input parameters According to the structure of wall-mounting unit, considering the comfortability for operation, indoor ambient temperature when the compressor is at OFF status is higher than set temperature under heating mode. 2. Control of detecting the availability of parameters For ensuring the safety and reliability of operation, please insert the outdoor discharge temperature sensor into the corresponding temperature sensor bushing to make sure that the control system can detect system discharge temperature accurately.
  • Page 39 11.2 Under cooling or drying mode, if T <6, the operation frequency of compressor may increase or decrease; inner tube 11.2.1 If the unit is stopped because of freeze protection for 6 times successively, it can’t resume operation automatically and the malfunction will be displayed continuously, which can only be resumed by pressing ON/OFF button.
  • Page 42 Space to the wall Space to the wall At least 5 8/9 inch At least 5 8/9 inch Drainage pipe...
  • Page 43 Start installation Preparation before installation Read the requirements select installation Prepare tools for electric connection location Select indoor unit Select outdoor unit installation location installation location Install the support of outdoor unit Install wall-mounting (select it according to the actual situation) frame, drill wall holes Connect pipes of indoor Fix outdoor unit...

  • Page 45: Outlet Pipe

    Wall Wall Mark on the middle of it Gradienter Space Space to the to the wall wall 5 8/9inch 5 8/9inch above above Right Left Ф2 3/4inch Ф2 3/4inch Open-end (Rear piping hole) (Rear piping hole) wrench Pipe Pipe joint Union nut Union nut Pipe...
  • Page 46 Screw Panel Wiring cover Indoor and outdoor power cord Indoor unit pipe Liquid pipe Band Drain hose Drain hose Connection pipe Band connection wire sleeve Indoor power cord Wiring Cover Outdoor unit Indoor Outdoor Wall pipe Sealing gum Upper hook Lower hook of wall-mounting frame...
  • Page 47 09/12K N(1) Indoor unit connection Power L1 L2 18/24K N(1) Drain vent Chassis Outdoor drain join t At least 1 1/6 inch above the floor Drain hose Indoor unit connection Foot holes Foot holes The drain hos can't raise upwards Wall Liquid pipe Pipe joint...
  • Page 48 The drain hose can't be fluctuant The water outlet can't be placed The drain hose in water can't be fluctuant The water outlet can't be fluctuant Liquid valve Piezometer Gas valve Valve cap Refrigerant charging vent Nut of refrigerant Charging vent Vacuum pump Inner hexagon spanner...
  • Page 51 Malfunction and Status Display Table Malfunction of Display of Malfunction of Indoor Unit Outdoor Unit Status of LED Status of LED Lamp Lamp Malfunction Display Malfunction Name Type LED Lamp LED Lamp Yellow Nixie Lamp Tube Cooling Heating Lamp Lamp Operation Blinks Malfunction of Circuit for zero cross detection...
  • Page 52 Wrong connection of communication wire or malfunction of expansion valve (free match) Malfunction of current detection for the Blinks for complete unit 13 imes Wrong connection of communication wire or status of detecting malfunction of expansion valve (free match) Blinks Mode conflict for 7 times...
  • Page 53 If malfunction occurs,corresponding code will display and the unit will resume normal until protection or malfunction disappears. Yellow indicator blinks for once Compressor stars (normal) Defrosting (normal display of indoor unit) Yellow indicator blinks for twice Anti-freezing protection (normal Yellow indicator blinks for 3 times display of indoor unit) IPM protection Yellow indicator blinks for 4 times...
  • Page 54 Analysis or processing of some of the malfunction display: 1. Compressor discharge protection operation; malfunction of compressor; malfunction of protection relay; malfunction of discharge sensor; outdoor temperature too high. Processing method: refer to the malfunction analysis in the above section. 2.
  • Page 55 Display Method of Outdoor Unit (Indicator has 3 kinds Display Method of Indoor Unit of display status and they will be displayed Malfunction A/C status Possible Causes circularly every 5s.) Name □OFF Indicator Display (during Dual-8 blinking, ON 0.5s and OFF 0.5s) ■Illuminated Blink Code...
  • Page 56 Display Method of Outdoor Unit (Indicator has 3 kinds Display Method of Indoor Unit of display status and they will be displayed Malfunction A/C status Possible Causes circularly every 5s.) Name □OFF Indicator Display (during Dual-8 blinking, ON 0.5s and OFF 0.5s) ■Illuminated Blink Code...
  • Page 57 Display Method of Outdoor Unit (Indicator has 3 kinds Display Method of Indoor Unit of display status and they will be displayed Malfunction A/C status Possible Causes circularly every 5s.) Name □OFF Indicator Display (during Dual-8 blinking, ON 0.5s and OFF 0.5s) ■Illuminated Blink Code...
  • Page 58 Display Method of Outdoor Unit (Indicator has 3 kinds Display Method of Indoor Unit of display status and they will be displayed Malfunction A/C status Possible Causes circularly every 5s.) Name □OFF Indicator Display (during blinking, Dual-8 ON 0.5s and OFF 0.5s) ■Illuminated Blink Code...
  • Page 59 Start Is the wiring terminal between temperature sensor and the controller loosened or poor ly contacted? Insert the temperature sensor tightly M alfunction is eliminated. Is there short circuit due to tri-pover of the pa rts? Make the parts upright Malfunction is eliminated.
  • Page 60 Start Pull the blade by hand under de-energization status Adjust the motor and Whether the blade assembly to let blade can operate the motor can operate smoothly smoothly Is malfunction eliminated Check whether the Reinsert the wiring wiring terminal between terminal of indoor fan indoor fan and main board is loose...
  • Page 61 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 62 Poor contact of any line may lead to communication malfuntion. Is there incorrect match between the main board and the display panel or between the indoor and outdoor boards? Is there incorrect connection?
  • Page 63 Outdoor unit: (1) Capacity charging malfunction (outdoor unit malfunction) (AP1 below is control board of outdoor unit) Main detection point: ● Detect if the voltage of L and N terminal of wiring board is between 210AC-240AC by alternating voltage meter; ●...
  • Page 65 Energize and switch on Use AC voltmeter If the voltage Check the supply to measure the IPM protection between terminal L voltage and voltage between occurs after the and N on wiring terminal L and N machine has run for restore it to board XT is within a period of time?
  • Page 66 (3) Diagnosis for anti-high temperature, overload protection (AP1 below is control board of outdoor unit) Main detection point: ● If the outdoor ambient temperature is in normal range; ● If the indoor and outdoor fan is running normal; ● If the radiating environment of indoor and outdoor unit is well. Malfunction diagnosis process: Anti-high temperature, overload protection...
  • Page 67 (4) Diagnosis for failure start up malfunction (AP1 below is control board of outdoor unit) Main detection point: ● If the compressor wiring is correct? ● If the stop time of compressor is enough? ● If the compressor is damaged? ●...
  • Page 68 (5) Diagnosis for compressor synchronism (AP1 below is control board of outdoor unit) Main detection point: ● If the system pressure is over-high? ● If the work voltage is over-low? Malfunction diagnosis process: Synchronism Synchronism after energize the unit occurred during and start it operation Check if the fan...
  • Page 69 (6) Diagnosis for overload and discharge malfunction (AP1 below is control board of outdoor unit) Main detection point: ● If the electron expansion valve is connected well? Is the expansion valve damaged? ● If the refrigerant is leakage? ● If the overload protector is damaged? Malfunction diagnosis process: After the unit de-energized...
  • Page 70 (7) PFC (correction for power factor) malfunction (outdoor unit malfunction) (AP1 below is control board of outdoor unit) Main detection point: ● Check if reactor (L) of outdoor unit and PFC capacity are damaged. Malfunction diagnosis process: Start Check the connection wire of reactor (L) of outdoor unit and...
  • Page 71 (8) Communication malfunction (AP1 below is control board of outdoor unit) Main detection point: ● Check if the connection wire and the built-in wiring of indoor and outdoor unit is connected well and no damaged; ● If the communication circuit of indoor mainboard is damaged? If the communication circuit of outdoor mainboard (AP1) is damaged Malfunction diagnosis process: Start If the unit is operation...
  • Page 86 27 26 25...
  • Page 90 Steps Procedure 1. Before disassembling the unit Before disassembling the unit. 2. Remove filter Open the panel. Loosen the clasps on filter, push the filter inward and then pull it upward, then the filter can be removed. 3.Remove guide louver Remove the axial bushing of big guidelouver.
  • Page 91 Steps Procedure Remove the rotating shaft of big guidelouver from the groove, slightly bend thebig guide louver to remove it. big guide louver Remove the axial bushing of small guidelouver. axial bushing Remove the rotating shaft of small guide louver from the groove, slightly bend the small guide louver to remove it.
  • Page 92 Steps Procedure panel, to remove the display. 5.Remove front case Remove the screws fixing electric box cover 2, to remove the electric box cover electric box cover 2 screw screw clamp Remove the screws fixing front panel, loosen the clamps, to remove the front panel.
  • Page 93 Steps Procedure 6.Remove swing fan blade Loosen the clamps fixing swing connecting rod, to remove the swing connecting rod. clamp swing connecting rod clamp remove the swing fan blade. swing fan blade 7.Remove electric box sub-assy heat exchanger thermistor Remove the indoor tube temp. sensor. earth wire Remove the screws fixing earth wire, to remove the earthwire.
  • Page 94 Steps Procedure to remove the cover. electric box cover electric box cover sub-assy screw Remove every wiring terminals, and remove the electric box cover sub-assy. 7.Remove evaporator sub-assy auxiliary piping pipe clamp Remove the screws fixing connection pipe clamp, to remove the connection pipeclamp. screw screw...
  • Page 95 Steps Procedure auxiliary piping Remove the screws fixing evaporator sub-assy, slightly regulate the tube, to remove the evaporator sub-assy. evaporator sub-assy 8.Remove cross fan blade and motor motor, to remove the motor. up&down swing motor to remove the motor. left&right swing motor...
  • Page 96 Steps Procedure Remove the screws fixing motor clamp, to remove the motor clamp. screw motor clamp Remove the cross fan blade and motor. bearing cushion rubber base Remove the shafting bearing cushionrubber base cross fan blade motor bladeandmotor, and then remove the motor.
  • Page 97 Steps Procedure 1. Before disassembling the unit Before disassembling the unit. 2. Remove filter Open the panel. Loosen the clasps on filter, push the filter inward and then pull it upward, then the filter can be removed. 3.Remove guide louver Remove the axial bushing of big guidelouver.
  • Page 98 Steps Procedure Remove the rotating shaft of big guide louver from the groove, slightly bend thebig guide louver to remove it. big guide louver Remove the axial bushing of small guide louver. axial bushing Remove the rotating shaft of small guide louver from the groove, slightly bend the small guide louver to remove it.
  • Page 99 Steps Procedure panel, to remove the display. 5.Remove front case Remove the screws fixing electric box cover 2, to remove the electric box cover electric box cover 2 screw screw clamp Remove the screws fixing front panel, loosen the clamps, to remove the front case.
  • Page 100 Steps Procedure 6.Remove swing fan blade Loosen the clamps fixing swing connecting rod, to remove the swing connecting rod. clamp swing connecting rod clamp remove the swing fan blade. swing fan blade 7.Remove electric box sub-assy heat exchanger thermistor Remove the indoor tube temp. sensor. earth wire Remove the screws fixing earth wire, to remove the earth wire.
  • Page 101 Steps Procedure to remove the cover. electric box cover electric box cover sub-assy screw Remove every wiring terminals, and remove the electric box cover sub-assy. 7.Remove evaporator sub-assy auxiliary piping pipe clamp Remove the screws fixing connection pipe clamp, to remove the connection pipe clamp. screw screw...
  • Page 102 Steps Procedure auxiliary piping Remove the screws fixing evaporator sub-assy, slightly regulate the tube, to remove the evaporator sub-assy. evaporator sub-assy 8.Remove cross fan blade and motor motor, to remove the motor. up&down swing motor to remove the motor. left&right swing motor...
  • Page 103 Steps Procedure Remove the screws fixing motor clamp, to remove the motor clamp. screw motor clamp Remove the cross fan blade and motor. bearing cushion rubber base Remove the shafting bearing cushion rubber base cross fan blade motor blade and motor, and then remove the motor.
  • Page 104 Steps Procedure Before disassembly of the unit Before disassembling the unit. 2. Remove filter panel Open the panel. air filter Loosen the clasps on filter, push the filter inward and then pull it upward, then the filter can be removed. hooks air filter...
  • Page 105 Steps Procedure 3. Remove the panel screw Remove the screws fixing display on the panel, to remove the display. display Along the groove fixing front panel, slide the rotor shaft outward to remove the front panel. panel Remove the panel. 4.
  • Page 106 Steps Procedure 5. Remove Axial bush Remove the axial bush of horizontal louver to remove the axial bush. Axial sleeve hook Remove Axial bush Axial bush 6. Remove front case Remove the screw cover of front case, unscrew the 8 screws of front case with screwdriver.
  • Page 107 Steps Procedure 7. Remove electric box temperature sensor Remove Temperature Sensor; Twist off the earthing screw fixing the evaporator. screw earth wire electric box cover 2 Remove the screw of electric box.Take out the electric box cover to separate the electric box cover 2. Remove every wiring terminals, and remove the screws fixing electric box to remove the electric box sub-assy.
  • Page 108 Steps Procedure 8. Remove evaporator sub-assy water tray Loosen the clasps connecting the water tray and chassis, and then remove the water tray. Remove the screws fixing connection pipe clamp, to remove the connection pipe clamp. pipe clamp screw Remove the screws fixing evaporator sub-assy, slightly regulate the tube, to remove the evaporator sub-assy.
  • Page 109 Steps Procedure srews srews Turn over the indoor unit and adjust the pipe line to the position as shown by the broken line. Lift up the evaporator, and then remove the evaporator. evaporator 9. Remove the cross-flow louver and motor Remove the 2 screws of step motor with screwdriver, and remove the step motor.
  • Page 110 Steps Procedure Remove screws fixing cross flow blade and motor. Cross blow blade Fan motor Remove the motor sub-assy. Ring of Bearing Pull out the plug of ring of bearing.
  • Page 111 1. Before disassembly 2. Remove top cover Remove the screws connecting top cover, left and right side plate, as well as panel, to remove the top top cover cover. 3. Remove handle Remove the screws connecting handle and right side plate, to remove the handle.
  • Page 112 4. Remove panel and grille Remove the screws fixing panel, to remove the panel. Remove the screws connecting panel grille and panel, loosen the clamp, to remove the panel grille. panel grille 5. Remove valve cover Remove the screw fixing valve cover, to remove the cover.
  • Page 113 6. Remove left side plate Remove the screws fixing left side plate and condenser support board, to remove the left side plate. left side plate 7. Remove cross fan blade Remove the screw nut fixing cross fan blade, remove the gasket and spring cushion, to remove the cross fan blade.
  • Page 114 9. Remove electric box assy electric box cover Remove screws fixing electric box assy and mid-isolation board, loosen the bonding tie, pull off the wiring terminal, lift to remove the electric box assy. electric box assy 10. Remove electric reactor Remove the screws fixing electric reactor, to remove the electric reactor.
  • Page 115 12. Remove mid-isolation board Remove the screws connecting mid-isolation board, chassis and condenser assy, to remove the mid-isolation. mid-isolation board 13. Remove four-way valve assy four-way valve assy Welding cut the spot weld of four-way valve assy, compressor air suction/discharging valve and condenser pipe outlet, lift to remove the four-way valve assy.
  • Page 116 15. Remove big and small valve assy Remove screws connecting condenser assy and chassis, to remove the condenser assy. Remove the screws fixing big and small valve, to remove the valves. small valve big valve condenser assy...
  • Page 117 Steps Procedure 1. Remove big handle,valve cover and top cover big handle Remove the screw connecting the big handle and right side plate, and then remove the big handle. Remove the screw connecting the valve cover and right side plate, and then remove the valve cover. valve cover Remove the screws connecting the top cover with top cover...
  • Page 118 Steps Procedure Remove the screws connecting the outer case with motor support, isolation plate and chassis; lift the outer case upwards; loosen the clasps of outer case with right side plate and left side plate, and then remove the outer case. outer case 3.
  • Page 119 Steps Procedure 4. Remove axial flow blade Remove the nut fixing axial flow blade and then remove the blade. axial flow fan motor support Remove the 6 screws fixing the motor and then remove the motor. Remove the 2 screws connecting the motor support and chassis, and then loosen the stopper to remove the motor support.
  • Page 120 Steps Procedure 6. Remove the soundproof sponge Tear off the sticking stripe and then remove the soundproof sponge. soundproof sponge 7. Remove isolation plate Remove the 2 screws connecting the isolation plate and condenser side plate; remove the 3 screws connecting the isolation plate and chassis, and then remove the isolation plate.
  • Page 121 Steps Procedure 9. Remove compressor compressor Remove the 3 foot nuts fixing compressor and then lift the compressor upwards to remove the compressor and damping cushion. Note: Keep the ports of discharge pipe and suction pipe from foreign objects. condenser sub-assy 10.
  • Page 122 Steps Procedure 1. Remove big handle,valve cover and top cover Remove the screw connecting the big handle and right side plate, and then remove the big handle. Remove the screw connecting the valve cover and right side plate, and then remove the valve cover. handle valve cover 2.Remove top panel...
  • Page 123 Steps Procedure 4.Remove grille and panel Twist off the screws connecting the grille and panel, and then remove the grille. Twist off the screws connecting the panel, chassis and motor support with screwd-river, and then remove the panel. grille panel 5.Remove right side plate right side plate Twist off the screws connecting the right side...
  • Page 124 Steps Procedure 7.Remove electric box electric box Twist off the screws on electric box, cut off the tieline with scissors or pliers, pull out the wiring terminal, pull it upwards to remove the electric box. Twist off the screws on electric box (fireproofing) electric box with screwdriver, and then remove the electric (fireproofing)
  • Page 125 Steps Procedure 9.Remove motor support Twist off the tapping screws fixingthe motor support, pull it upwardsand then remove the motor support. motor support 10.Remove isolation sheet Twist off the screws connecting isolation sheet and end plate of condenser and chassis, and then remove the isolation sheet.
  • Page 126 Steps Procedure 12.Remove gas valve and liquid valve Twist off the 2 bolts fixing the valve sub-assy. Unsolder the soldering joint between gas valve and air-return pipe and then remove the gas valve.(note: when unsoldering the soldering joint, wrap the gas valve with wet cloth completely to gas valve avoid the damage to valve, and release all refrigerant completely at first).
  • Page 127 Steps Procedure 15.Remove left side plate Twist off the screws connecting the left side plate and chassis with screwdriver, and then remove the left side plate. left side plate 16.Remove chassis and condenser Pull it upwards to separate the chassis and condenser.
  • Page 129 Pipe Pipe cutter Leaning Uneven Burr Pipe Shaper Downwards Union pipe Pipe Hard mold Expander Pipe Smooth surface Improper expanding damaged leaning crack uneven surface thickness The length is equal...
  • Page 133 If the product you bought is equipped with wired controller, please refer to the following introductions of wired controller. 1 Displaying Part Fig1.1.1 Outline of wired controller 1.1 LCD Display of Wired Controller Fig.1.1.2 LCD display 1.2 Instruction to LCD Display Table 1.1 Symbols Description...
  • Page 134 2 Buttons 2.1 Layout of Buttons 2.2 Functions of Buttons Table 2.1 Name Function Enter/Cancel Function selection and cancellation. ▲ Running temperature setting of the indoor unit, range:16~30 C(61~86°F). Timer setting, range:0.5-24 hr. ▼ Setting of the high/middle/low/auto fan speed. Mode Setting of the Cooling/Heating/Fan/Dry/Auto mode of the indoor unit.
  • Page 135 3.3 Temperature Setting Press ▲or ▼ to increase/decrease the preset temperature. If pressing either of them continuously, the temperature will be increased or decreased by 1°C every 0.5s,as shown in Fig.3.3.1. In the Cooling, Dry, Fan or Heating mode, the temperature setting range is 16°C~30°C(61°F~86°F). In the Auto mode, the setting temperature is unadjustable.
  • Page 136 Timer on setting under the “Off” state of the unit is shown as Fig.3.5.2. Fig.3.5.2 Timer on Setting under the “Off” State of the Unit Timer range: 0.5-24hr. Every press of ▲or ▼ will make the set time increased or decreased by 0.5hr. If either of them is pressed continuously, the set time will increase/ decrease by 0.5hr every 0.5s.
  • Page 137 3.7 Sleep Setting Sleep on: Press Function under the On state of the unit till the unit enters the Sleep setting state. After that, press Enter/Cancel to Sleep off: When the Sleep function is activated, press Function to enter the Sleep setting status. After that, press Enter/Cancel to cancel this function.
  • Page 138 3.9 E-heater Setting E-heater (auxiliary electric heating function): In the Heating mode, E-heater is allowed to be turned on for improvement of effciency. Once the wired controller or the remote controller enters the Heating mode, this function will be turned on automatically. Press Function in the Heating mode to enter the E-heater setting interface and then press Enter/Cancel to cancel this function.
  • Page 139 3.11 Other Functions a. Lock Upon startup of the unit without malfunction or under the “Off” state of the unit, press ▲ and ▼ at the same time for 5s till the wired controller enters the Lock function. In this case, LCD displays After that, repress these two buttons at the same time for 5s to quit this function.
  • Page 140 Fig.4.2 Fig.4.2 shows the installation steps of the wired controller, but there are some issues that need your attention. with electricity during the whole installation. 2) Pull out the four-core twisted pair line from the installation holes and then let it go through the rectangular hole behind the soleplate of the wired controller.
  • Page 141 5 Errors Display If there is an error occurring during the operation of the system, the error code will be displayed on the LCD, as show in Fig.5.1. If multi errors occur at the same time, their codes will be displayed circularly. Note: In event of any error, please turn off the unit and contact the professionally skilled personnel.

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