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Service Manual

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2. GWH24AC D3DNA1B O Refrigerant System Diagram 4 Refrigerant System Diagram Heat exchanger i INDOOR muere ies es l gt E ooo 2 Way valve 5 o o E 8 E o E O e 4 Way valve Strainer i O o E Expansion valve O9 3 O O P Heat exchanger Strainer Strainer OUTDOOR Mo eae mmm PENE gt Cooling Heating Refrigerant pipe diameter 18K Unit Liquid 1 4 6 mm Gas 1 2 12 mm 24K Unit Liquid 1 4 6 mm Gas 5 8 16 mm Schematic Diagram o Schematic Diagram 5 1 Electrical Data Meaning of marks Indoor Unit Symbol Color symbol Symbol Color symbol wu wur BN BROMA VE elo BU prue RD RED e Back YEGN YELLOW GREEN GROUNDING Outdoor Unit uu meon w wie DEM ES o sa OR EN SATOVERLOADBNBROWN come COMPRESOR BU BUE o eros BK BAK 5 2 Electrical wiring O Indoor Unit Models GWH18AC D3DNA1B GWH24AC D3DNA1B TUBE ROOM TEM SENSOR TEM SENSOR DISP1 DISP2 AP1 ROOM LINA YOOALNO EVAPORATOR
3. AN ij gt Air outlet side S E E L p B e The dimensions of the space necessary for correct D installation of the appliance include the minimum 5 permissible distances to adjacent structures F sa p E S E E E Ej E Space to the obstruction ute zm Air inlet side e l E E ig Space to the wall E opace to E DH GM i 1 Air outlet side 23 INSTALLATION GUIDE 7 3 INDOOR UNIT INSTALLATION INSTALL MOUNTING PLATE 1 Carefully remove the mounting plate which is attached to the back of the indoor unit 2 The mounting plate should be located horizontally and level on the wall All minimum spacings shown in Fig 6 and Fig 7 should be maintained 3 If the wall is block brick concrete or similar material drill 2 5 mm diameter holes and insert anchors for the ap propriate mounting screws 4 Attach the mounting plate to the wall TL lo O O O o oo o o o fl o o Off Of Oo El o lt gt S E 0 o o o 0 D 0 o o o o 66 a DU 0 ES 10 Es CD W 0 co ey 5 oo N je ee x E O Mt 0
4. unit is powered off N Replace the related pipe Replace the related control panel Check eng outdoor control panel under cooling and indoor control panel under heating Finish y 48 Troubleshooting 9 2 3 4 Diagnosis of failure startup outdoor unit malfunction Indoor display LC dual 8 display heating indicator is off for 3S and blinks 11 times Main detection point ls the compressor wiring correct Is the off time of compressor enough e Is the compressor damaged Is the refrigerant charging too much Malfunction diagnosis process Energize the unit and start it If the stop time is not enough and the A If the stop time of compressor is N high and low pressure of system is not more than 3min balance please start it after 3min Y Improve the connection situation N of control board AP1 and compressor COMP connect it with wiring diagram If the compressor wire COMP UVW is well connected and connection sequence is correct Does the unit start up normally If the refrigerant charging is too much Y Y Charge the refrigerant with service manual Does the unit start p normally N Y 4 Replace control board AP1 If malfunction is removed E the TE E 49 Troubleshooting 9 2 3 5 Diagnosis of compressor synchronism outdoor unit malfunct
5. Les o i O o 25 6 650 5 A09664 Fig 6 18k Mounting Plate Spacing 24 11 4 290 A09665 Fig 7 24k Mounting Plate Spacing DRILL HOLE IN WALL FOR INTERCONNECTING PIPING DRAIN AND WIRING Refrigerant Line Routing The refrigerant lines may be routed in any of the four directions shown in Fig 8 a and b For maximum serviceability it is recommended to have refrigerant line flare connections and the drain connection on the outside of the wall that the fan coil is mounted on As viewed from front Q Right Exit E Lett ext Left Rear Exit a b Knockout 3 Knockout 2 Knockout 1 Right Rear Exit c A08281 Fig 8 Refrigerant Line Routing If piping is going through the back 1 Determine pipe hole position using the mounting plate as a template Drill pipe hole diameter per chart below The outside pipe hole is 1 2 in 13 mm min lower than inside pipe hole so it slants slightly downward see Fig 9 If piping is going to exit from the left rear it is recommen ded to field fabricate piping extensions to get the flare con nections to the outside of the wall 1 2 in 13 mm Min INDOOR OUTDOOR A07371 Fig 9 Drill Holes Model Size m e 9k 12k and 18k 2 56 65 24k 3 75 95 If piping is going through the right or left side 1 Use a small saw blade to carefully r
6. v Outdoor unit malfunction Number jumping Y Test voltage value with Test 12 position in diagram with voltage meter Number jumping Y y The circuit of outdoor unit Finish communication is normal 54 Removal Procedure 10 Removal Procedure 10 1 Removal Procedure of Indoor Unit N Warning Be sure to wait for a minimum of 10 minutes after turning off all power supplies before disassembling work ES Procedure E Remove panel Push the convex partson the left and right sides of the front panel and then lift the front panel panel Unscrew the screws fixing the display cover and pull out the plug Forcibly lift the front panel up wards from the clasps to take it out display cover plate screw 2 Remove filter and wire pressed clamp Top the middle section of air filter from the clasps at both sides Pull the air filter forward to remove It Unscrew the 1 screw on press plate to open the press wire board wire pressed clamp 3 Remove swing louver Push out the axile bush in the middle of air deflector Then slightly bend the air deflector to mEEEALLLeE 3 i 1 ii 4 remove it ml axile bush 4 Remove panel case Unscrew the 7 tapping screws fixing the front case and turn the front case backwards to re move it SCrews 55 Removal Procedure a 5 Remove water tray earth
7. 4 Push the T OFF button again the OFF icon will stop blinking and the time at which the unit will turn off is set The T OFF time will be stored in memory indefinitely until is is cancelled by pushing the the CANCEL button or the batteries are replaced in the remote control If the unit is running and the T OFF set time is reached the unit will turn off and the operation indicator light on the front panel will turn red The display on the remote control will remain the same as when the unit was running To turn the unit on again push the ON OFF button twice The operation indicator light on the front panel will turn green Timer ON and Timer OFF BB Timer Indicator ES calm co ed c A08308 Use both functions as described in TIMER ON and TIMER OFF sections to program the unit to turn on and shut off at specified times Times will be stored in memory until cancelled by user or the remote control batteries are replaced 16 Sleep Mode This mode is used to conserve energy and can be used when the unit is in the COOL HEAT or AUTO mode only Cool Mode Push the SLEEP button The SLEEP display will appear on the remote control dr R i Sleep Mode Icon OCT sme 08 08 A08309 After 1 hour the set point will be raised by 1 8 F 1 C After another hour the set point will be raised by another 1 8 F 1 C and the fan will run in low speed
8. Replace thermistor Problem solved Problem persists Check motor for open Yes or short Ok Replace outdoor motor Check output on outdoor board Ok Replace outdoor board A09364 Fig 32 High Condensing Temperature Is unit running in outdoor Yes ambient higher than 110 F Beyond operating range No l Clean coil Outdoor coil clean E Problem persists Problem solved Yes Yes Check connections from Yes Replace motor OD board Loose corroded or high resistance Clean repair connection Problem persists Problem solved No Yes Yes Check output on outdoor board Ok Outdoor motor ok Replace outdoor board Yes Connect low side gauge at suction service valve High head high suction High head low suction Measure discharge temp Yes Yes Yes Check amp draw to compressor Values within range Unit is overcharged Reclaim charge and weigh in correct charge Restriction in refrigeration Replace compressor circuit Yes Measure discharge temperature at the sensor on the discharge tube See Appendix A5 Replace outdoor board Ki A09365 Fig 33 Compressor Overcurrent Protection 40 DIAGNOSTIC CHARTS CONT Check heat sink for Yes Clean obstruction and dirt Problem fixed Check if connection Yes See note below is loose Is problem fixed Check voltage and current Measure voltage between Ok See note below X15 and X9
9. T ON time will be stored in memory indefinitely until it is cancelled by the user by pushing the CANCEL button or the remote control batteries are replaced If the unit is running and the T ON set time is reached the unit will continue operating normally NOTE When the unit is shut off by the user using the ON OFF button and if the T ON is set the following will be displayed on the remote control Set Point Time TIME ON icon On the display panel the operation light will turn red When the T ON is reached the display on the remote does not change and the unit is running as indicated by the operation light on the front cover turning green To get display on the remote push the ON OFF button once Timer OFF only Timer OFF Indicator PEE Li t MM cetim A08306 This function will allow the unit to stop automatically at the set time The timer can be set while the unit is on or while it is off To set the TIMER OFF function perform the following Push the T OFF button once 2 The TIMER indicator will appear on the remote control with OFF flashing 3 Push the TIME or TIME button until the desired ON time is reached NOTE Pressing the TIME or TIME will decrease or increase the time in 1 minute increments Pressing the TIME or TIME continuously will decrease or increase the time in 10 minute increments
10. persists Yes Yes Check indoor fan motor Replace indoor fan motor Yes Connect low side gauge Y m at suction service valve 99 Check application Measure discharge temp limits Normal suction High head high high head suction High head low suction Yes Yes Yes Non condensables Unit is overcharged in sys Pump down Reclaim charge and See note below and recharge unit weigh in correct charge Restriction in system Check capillary tube and check for damage to liquid line between indoor and outdoor units A09368 Fig 36 Unit Not Running Optimally Visually check outdoor Check reversing valve Unit for ice blockage Go to flow chart 12 Yes Check defrost sensor Ok Repl Go to flow chart 2 eplace sensor Yes Check application limits Ok Beyond operating range Yes Check ambient conditions Prime icing Yes Explain to customer To supplement flow chart 9 Check for blockage on outdoor coil and drain pan Are the hoks in drain pans blocked A09369 Fig 37 Unit Not Running Optimally HP in Heating 42 DIAGNOSTIC CHARTS CONT Visually confirm that fan No blades and outdoor coil Clear blockage are not blocked m Yes Trace connections from No OD board Connections ok Fix connection Yes Check motor windings 9 Replace Motor Ok Yes Motor ok Fig 38 Motors Clean or repair the con
11. Information required in the diagnoses can be found either on the wiring diagrams or in the appendi Required Tools The following tools are needed when diagnosing the units Digital multimeter e Screw drivers Phillips and straight head e Needle nose pliers Recommended Steps i Ze Refer to the diagnostic hierarchy chart below and determine the problem at hand Go to the chart listed in the diagnostic hierarchy and follow the steps in the chart for the selected problem Error codes if they occur are displayed on the LED panel on the front cover of the unit In addition some of the same errors are displayed by flashing LEDs on the outdoor board If possible always check the diaganostic codes displayed on the indoor unit first For problems requiring measurements at the control boards B WN 10 11 12 Always disconnect the main power When possible check the outdoor board first Start by removing the outdoor unit top cover Reconnect the main power Probe the outdoor board inputs and outputs with a digital multi meter referring to the wiring diagrams and input output charts found in the appendix Connect the red probe to hot signal and the black probe to the ground or negative Note that some of the DC voltage signals are pulse will give continuously variable readings If it is necessary to check the indoor unit board you must start by disconnecting the main power Next re
12. On the Unit o e 8 RUN S DEHUMIDIFY MODE INFRARED SIGNAL RECEPTOR TEMPERATURE HEAT INDICATOR it COOL INDICATOR S A08297 The temperature readout will be replaced by an error code if there is a malfunction 6 2 Remote Control Display 3 Y A08295 D TRANSMISSION INDICATOR Illuminates when remote SLEEP DISPLAY Indicates unit is running in SLEEP mode O CORNO ARS Sie ras LONDE IMS TEMPERATURE DISPLAY Temperature setting from ON OFF INDICATOR This symbol appears when the unit 61 F 16 C to 86 F 30 C will be displayed If FAN mode is turned on by the remote control and disappear when the is selected there will be no temperature displayed A USUS D SWING DISPLAY Indicates that louvers are moving FAN SPEED DISPLAY Indicates the set fan speed AUTO continuously for better air distribution is displayed when unit is running in AUTO mode CLOCK DISPLAY Indicates the current time 0 to 24 0 MODE DISPLAY Indicates the current operation mode hours AUTO COOL DRY FAN ONLY or HEAT O TIMER DISPLAY Indicates that time ON time OFF or qne Moe both is set COOL Mode DRY Mode FAN Mode HEAT Mode 08296 NOTE Symbols shown in this manual are for the purpose of demonstration During actual operation only the relevant symbols are displayed 12 6 3 Remote Control Operati
13. The SLEEP mode will be cancelled when the SLEEP button is pushed again Heat Mode Same as cooling mode but set points will be lowered by 1 8 F 1 C and the HEAT icon will disappear from the display panel Time Delay If the On Off button is pressed too soon after a stop the compressor will not start for 3 minutes due to the inherent protection against frequent compressor cycling The unit will only emit an audible beep when the signals are received correctly Heating Features If the unit is in the heating mode there will be a delay when the fan starts The fan will start only after the coil is warmed up to prevent cold blow Defrost Operation In heating mode if the outdoor coil is frosted the indoor fan and outdoor fan will turn off while system removes the frost on the outdoor coil H1 will be displayed on the display panel on the front cover of the unit The system will automatically revert to normal operation when frost is removed from the outdoor unit and H1 will disappear Auto Start If the power fails while the unit is operating the unit stores the operating condition and it will start operation automatically under those conditions when the power is restored CONTROL SYSTEM The 53GXC Q units are equipped with microprocessors in the indoor and outdoor units They perform the following two functions 1 Provide safety for the system 2 Control the system and provide optimum levels of comfor
14. ELECTRIC BOX Jg Schematic Diagram Outdoor Unit Models GWH18AC D3DNA1B O GWH24AC D3DNA1B O WARNING AWH Please don t touch any terminal when the SAT voltage of terminal P DC and N DC at SWH AP1 is higher than 30V to prevent the risk R a 6YEGN of electrical shock E OUTTUBE OUTROOM EXHAUST S C T TEM SENSOR TEM SENSOR TEM SENSOR RT1 y RT2 p RT3 p wel 28u 3RD e el ef x 15YE 16BU A COMP U COMP V COMP W T SENSOR OVC COMP Z U O O AJ C q INDC1 INDC2 PFCC1 PFCC2 l 12WH 130G 18YE I9YE A E IG These circuit diagrams are subject to change without notice please refer to the one supplied with the unit Schematic Diagram 5 3 Printed Circuit Board Indoor Unit e TOP VIEW a VOO DO e it or SWING UD tr LR R102 E i uer Neutral line ea HT mp Neutral line of health function d EEE Mem BG Live line vf 1 rss R43 TZ 181 p 1 1 P J17 ES pn Ec a vd Power cable of PG motor T TUE RO jas WE UE KA Fr ES re 2 Live line of health function L n3 EN Eis a PGF No PokName D 2 o N q e E m D 2 AN O gt a Dra Tm T a US Tet SO Ee GRJ823 A V1 1 u4 Jumper cap ok uox 710 C22 cast hos 2009 09 13 E 42 S nH as y p e m K 3L 3 EN Link to up down swing motor H NPS e R37R36R35 Aue o ud 9 Feedback line of PG motor E 049 C44 gr T R54 RSS RIOD Fr Ta
15. Go to chart 9 amp 10 A09359 Fig 27 Diagnostic Hierarchy 37 9 2 DIAGNOSTIC CHARTS Indoor fan motor running Connect low side gauge at suction service valve Measure discharge temp Yes Clean indoor coil and filter Problem fixed Problem solved Check indoor coil temperature thermistor Chart 4 ok Replace indoor board Yes Replace thermistor Fig 28 Indoor Freeze Protection Connect low side gauge at Ok Check compressor No suction service valve discharge line thermistor Measure discharge temp n Ok No Yes Suction and discharge pressures low High head low suction Check for leaks Restriction n refrigeration circuit Check for blocked capillary tube or a restriction in liquid line Reclaim charge and fix leak Weigh in charge Fig 29 High Compressor Discharge Temperature 38 Check motor Chart Check for leaks Reclaim charge and fix leak Weigh in charge A09360 Replace thermistor A09361 DIAGNOSTIC CHARTS CONT Reset circuit breaker Is Yes problem fixed Problem fixed Notes Before measuring the Volts DC on outdoor TB disconnect the field wire on terminal S Check the wires type and connections between Indoor and outdoor units Fix connection or Ex Before measuring the Volts DC on Indoor TB replace wiring disconnect the field wire on terminal S 1 Have the red probe of the meter
16. accurately measuring this vacuum depth The deep vacuum method is the most positive way of assuring a system is free of air and liquid water See Fig 17 5000 i olf A aseo 1 San jo 7 Sim 6 3000 2000 ee VACUUM TIGHT 4000 L TOO WET TIGHT 500 DRY SYSTEM O 1 2 3 4 5 6 7 MINUTES A95424 Fig 17 Deep Vacuum Graph Triple Evacuation Method The triple evacuation method should only be used when vacuum pump is only capable of pumping down to 28 in of mercury vacuum and system does not contain any liquid water Refer to Fig 18 and proceed as follows 1 Pump system down to 28 in of mercury and allow pump to continue operating for an additional 15 minutes 2 Close service valves and shut off vacuum pump 3 Connect a nitrogen cylinder and regulator to system and open until system pressure is 2 psig 4 Close service valve and allow system to stand for 1 hr Dur ing this time dry nitrogen will be able to diffuse throughout the system absorbing moisture 5 Repeat this procedure as indicated in Fig 18 System will then be free of any contaminants and water vapor WAIT WAIT EVACUATE CHECK FOR TIGHT DRY SYSTEM IF IT HOLDS DEEP VACUUM RELEASE CHARGE INTO SYSTEM m A95425 Fig 18 Triple Evacuation Method Final Tubing Check IMPORTANT Check to be certain factory tubing on both indoor and outdoor unit has not shifted during shipment Ensure tubes are not rubbing against each other or any sheet me
17. control more than one unit e If the remote control is lost damaged or the batteries are exhausted the system can be operated using the manual button located under the front panel 18 MODES OF OPERATION The units have five main operating modes 1 Fan only 2 Cooling 3 Heating heat pump only 4 Auto 5 Dry Dehumidification The units also have the manual mode that allows the unit to be operated without the remote control Fan Only Mode In this mode the system circulates the room air without changing the room air temperature Cooling Mode In this mode the system cools and dries the room air with the fan running continuously either at a selected fan speed or Auto fan speed The fan runs even when the compressor cycles off This feature enhances room comfort and efficiency of the system Compressor Outdoor Fan Operations and Indoor fan Operation As shown below the compressor and outdoor fan motor cycle on and off based on the conditions of the set point and the room temperature The indoor fan runs continuously Tan Ts 3 6 F Tamb2Tst1 8 F Tet 1 6 F posso ee et ee ee nn Ts Compressor matches load To 3 6 F fe TTA Compressor AN SS IKKKKKKKKKKKKKK Fig 18 Cooling Mode Indoor Fan Operation Cooling When in cooling mode the fan runs continuously either at the chosen set speed or in Auto mode where the speed is determined by the microprocessor based on the difference betwee
18. recommended deep vacuum method of 500 microns The alternate triple evacuation method may be used if the procedure outlined below is followed Always break a vacuum with dry nitrogen SYSTEM VACUUM AND CHARGE Using Vacuum Pump 1 Completely tighten flare nuts A B C D connect manifold gage charge hose to a charge port of the low side service valve See Fig 15 2 Connect charge hose to vacuum pump 3 Fully open the low side of manifold gage See Fig 16 4 Start vacuum pump 5 Evacuate using either deep vacuum or triple evacuation method After evacuation is complete fully close the low side of manifold gage and stop operation of vacuum pump ON I The factory charge contained in the outdoor unit is good for up to 25 ft 8 m of line length For refrigerant lines longer than 25 ft 8 m add 0 1 oz per foot of extra piping up to the maximum allowable length 8 Disconnect charge hose from charge connection of the low side service valve 9 Fully open service valves B and A 10 Securely tighten caps of service valves Outdoor Unit Refrigerant Indoor Unit E I qA Low Side re D SE Han Side H High Side Service Valve A07360 Fig 15 Service Valve Manifold Gage 500 microns Low side valve Low side valve A07361 Fig 16 Manifold 21 Deep Vacuum Method The deep vacuum method requires a vacuum pump capable of pulling a vacuum of 500 microns and a vacuum gage capable of
19. screw Electric box cover Unscrew the ground screw on the electric box cover and loose the clasps to remove electric box cover Pulll out the wiring terminal Unscrew the 2 screws fixing the water tray to remove the water tray screws water tray Remove electric box Unscrew the 2 screws fixing the electric box Unplug the motor terminal Unscrew the three ground screws Lift the electric box upwards to remove it Ta Remove evaporator assy Clamp Plate Unscrew the screws fixing the clamp plate of rear of Rear Pipe pipe at the back of evaporator to remove the plate screw Unscrew the screw on the right of evaporator screw 56 Removal Procedure EA Unscrew the 2 screws on the left of evaporator Turn the evaporator at certain angle to remove it SCrews Remove motor and cross flow louver ti Unscrew the screws fixing the press plate of motor and connecting motor and cross flow fan to remove the motor and cross flow louver SCrews cross flow louver motor 57 Removal Procedure 10 2 Removal Procedure of Outdoor Unit 18K Unit N Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work a OO 1 Remove top cover Twist off the fastening screw used for fixing the handle pull it downward and then remove the handle Twist off the screws around the top cover pull it upward and then remove the top cover Top cove
20. too high e Locked rotor on the compressor e Blockage in the refrigeration circuit capillary tubes for example e Outdoor air is blocked or restricted The compressor current is monitored continuously Based on the amp draw measured the microprocessor will allow the compressor to increase frequency maintain frequency drop frequency and eventually de energized the compressor if excessive amps are experienced a Frequency Ree AAA AAA AT ASAT SARA Xen RRR o o 10 Compressor Outdoor Fan Indoor Fan Il M D 5 A09349 Fig 17 Overcurrent Protection IPM Module Protection This can be caused by any of the following e Loss of cooling to the heat sink e High ambient temperatures e ow voltage oose screws fastening the board to the heat sink When this occurs H5 is displayed on the LED display on the front panel of the indoor unit SEQUENCE OF OPERATION Interface A wireless remote control supplied with the unit is the interface between the fan coil and the user The wireless remote control has the following characteristics e Dedicated controllers for C or F Each indoor units comes with two remotes that are clearly labeled for the appropriate temperature scale e The remote control range is from 61 F 16 1 C to 86 F 30 C e The same remote is used for both cooling only and heat pump units e The wireless remote control range is 25 ft 7 6 m e The same remote can be used to
21. unit will not start The same applies for the Heating mode if the selected temperature is lower than the room temperature Selecting the Fan Speed MEDIUM HIGH LOW AUTO A08304 The fan speed can be selected by pressing the FAN button NOTE When the unit is on the fan will run continuously in cooling or heating When in heating there might be situations where the fan will slow down or shut off to prevent cold blow Selecting the Horizontal Direction Louver Position When the unit is turned on the louvers default to the cooling or heating position If the louver position is not providing adequate comfort due to room layout or where people are gathered the user has two options 1 Have the horizontal louvers move continuously This is ac complished by pushing the SWING button When this button is pushed the SWING icon will appear on the re mote control and the louvers will operate in a preset range as shown in the figure below MM m po A NN Li LI N LILI F swine 08 08 mu 2 If a stationary position other than the default position is pre ferred push the SWING button once and allow the louver to move to the desired position then push the SWING button again A08307 NOTE Always use the remote control to adjust the louver position otherwise abnormal operation may occur If the louver is manually adjusted out if its range turn the unit off and then
22. 3 4 i Liquid Pipe inch Q 1 4 1 4 Outer Diameter S Gas Pipe inch 1 2 5 8 Height ft 0 18 gt Max Distance HRU Length ft The above data is subject to change without notice Please refer to the nameplate of the unit Constrction views 3 Construction Views 3 1 Indoor Unit Unit inch Constrction views 35 1 16 3 2 Outdoor Uni GWH18AC D3DNA1B O co b es pes gt E Ar Es CN I Cc D co V Se ES A_ 7 FS AFA AC o Y O co co Z e J U JL IN JX J X J X JU JL J LO eo ve N W n J gt 1 3 U n J X J N Ly n J ES 31 1 8 A il Z ll HHHH Hin B 37 15 16 22 1 16 39 3 8
23. 8 display heating indicator is off for 3S and blinks 3 times E4 dual 8 display operation is off for 3S and blinks 4 times Main detection point Is the electron expansion valve connected well Is the expansion valve damaged o ls there refrigerant leakage After the unit eo Is the overload protector damaged ls the discharge temperature sensor damaged de energized Malfunction diagnosis process for 20min If the overload protector SAT is well Troubleshooting connected Y Under ambient temperature test the resistance of overload of overload protector with ohmic meter resistance value is less than 10000 If the wiring terminal FA of electron expansion is well connected Y Check if electronic expansion valve coil is installed on the valve body normally v Replace overload protector SAT Check there is block for electronic expansion valve y Connect wire well with wiring diagram Remove mulfunction N y Check refrigerant if there is leakage please refer to specification Remove mulfunction heck if the discharge temperature senor is normal with temperature sensor esistance value mete Y Y Replace outdoor control board Finish v Replace discharge temperature sensor An 91 Troubleshooting 9 2 3 7 PFC correction for power factor malfunction outd
24. GO GREE b Service Manual MODEL GWH18AC D3DNA1B CB11500430 GWH24AC D3DNA1B CB11500450 Refrigerant R410A GREE ELECTRIC APPLIANCES INC OF ZHUHAI Part 1 Part 2 Part 3 Part 4 Part 5 Part 6 Part 7 Part 8 Table of Contents Summary and features 1 1 1 sese 1 Safety Precautions sese 2 Specifications 3 Construction Views 5 TON 5 GWAS ole e NIE NN 6 Refrigerant System Diagram eneen 7 Schematic Diagram eenen 8 9 1 Electrical BINE T 8 9 2 Electrical WIN 0 EEE NE 8 9 0 Printed Circuit ses a a di 10 Function and Control eneen eneen 12 bl Unit Display In 12 6 2 Remote MLD 12 6 3 Remote Control Operations sese ee eee eee 13 0 4 CONNOSCO sas sesuais ae RE EE 17 Installation Manual ennen eneen eneen 21 TNS TSN 21 7 2 MSO DAWN EE EE NE OE 23 TENT UNN 24 EE KON s UN EEE EEE 25 PP o ol 0 E RA 28 Exploded Views and Parts List e 29 TN 29 8 2 Outdoor UniL rar 33 Table of Contents Part 9 Troubleshooting sese ST SA eo di m 31 PA DARCOS UC Og IT NR E m T 38 9 2 2 Blinking LED NN MON 45 9 2 3 Check Maifunction Process ra 49 Part10 Removal Procedure 58 10 1 Removal Proce
25. Ok Check voltage and balance Replace capacitor Problem fixed Replace compressor between any two phases of U V and W Ok Replace outdoor board Remove screws remove heat sink remove thermal grease Apply new thermal grease and reassemble Check if voltage between power module P and N is too low and if current is too high In normal conditions voltage between P and N should be about 370V A09366 Fig 34 IPM Module Protection No Try to start unit using auto Function Unit runs Yes Use auto function to shut off unit Start unit using remote N No control Audible noise heard NO Check batteries OK Replace battery Unit started Yes Yes Problem solved Go to chart 13 Reset circuit breaker Is unit No Is there power to outdoor NO Check wiring and circuit running unit breaker and fix Yes Yes Check input and output on No Problem solved outdoor board OK Replace outdoor board Replace indoor board Yes Check components Ok Yes Check fuse on indoor Yes Check input and output on Flow charts 10 thru 12 board Ok indoor board Ok No Yes Replace defective component O Z O Determine defective Replace fuse component and replace gt eo o O N Fig 35 Unit Not Running No Diagnostic Code 41 DIAGNOSTIC CHARTS CONT Outdoor coil clean No Clean Gol Problem No Problem solved n persists Yes Yes Indoor filter clean Clean filter Problem Problem solved
26. P1 47 Troubleshooting Troubleshooting 9 2 3 3 Diagnosis of high temperature overload protection Check outdoor unit when cooling and indoor unit when heating Indoor unit display H4 dual 8 display heating indicator is off for 3S and blinks 4 times Main detection points e Is the indoor and outdoor ambient temperature in normal range e Is the indoor and outdoor fan running normally e Is the radiating environment of indoor and outdoor unit OK e Is the indoor and outdoor pipe temperature sensor normal Malfunction diagnosis process Anti high temperature overload protection f the outdoor ambient temperature is higher than 48127 Fahrenheit Normal protection please use y Y it after improve the outdoor p ambient temperature If the radiating of outdoor and indoor unit is well Y Improve the radiating environment of unit 1 Check if fan terminal OFAN is connected well N 2 Test if resistance value of any two terminals is less than 1kO with ohmic meter If the indoor and outdoor fan work well Y v If the temperature sensor is normal with pipe temperature resistance value meter Check outdoor pipe temperature under cooling and indoor Heplace fan capacity pipe temperature under heating C1 Replace fan motor f the pipe temperature sensor is normal Y Wait for 20min after the
27. alve and liquid valve Twist off the screws used for fixing the gas valve and liquid valve unsolder the spot weld between gas valve and return air pipe and then remove the gas valve and liquid valve gas valve 8 Remove Compressor Loosen the nuts of compressor unsolder weld spot shown on suction pipe and discharge pipe of compressor move the pipeline and then take out the compressor Bolt of Compressor 60 Removal Procedure 10 3 Removal Procedure of Outdoor Unit 24K Unit pe ma OOO 1 Remove top cover front side panel Twist off the clamping screws used for fixing the handle with screwdriver pull it downward forcibly and then remove the handle Twist off the screws around the top cover pull it ER top cover upward and then remove the top cover RE E Twist off the screws around the front side panel and T then remove the front side plate LA SEE eer en E q AA pee LIL EE Sy IG handle HI In BR dh MUT 2 Remove grille and right side plate Twist off the screws around the grille and then remove the grille Twist off the screws between right side plate and end plate of condenser valve support pull it upward and then remove the right side plate 3 Remove electric box Twist off the screws on electric box cover pull out the temperature sensor and then remove the electric box Ensure don not contact control panel when removing electric box cover
28. an is and check it with s voltage meter until the running normal component specification voltage decreased to 20V 3 If the ambient temperature is high which leads system pressure is high and Replace capacity exceed to the S capacity C Y C2 then energize units range invalid the unit can start it 4 If refrigerant to run charging is too much and leads the system pressure is high Replace 5 Other situations N control board which lead the AP1 System is high If control a AP1 and compressor COMP is well connected If they are loosened If the connection sequence is correct Correct it with Y service manual then energize the unit can start it to run If above abnormal Situation happened Replace N control board AP1 If AP1 and COMP is well connected or correct connection sequence Connect control board AP1 Y and compressor COMP with circuit wiring diagram then energize the unit can start it oes the unit work normally Test resistance of 3 terminals of compressor COMP with Replace resistance measuring apparatus Resistance value i and contrast with compressor normal N EU Sel resistance value of service COMP manual Test the resistance between 3 N terminals of compressor COMP and copper pipe with ME men resistance measuring i apparatus N Y Replace control board A
29. below 17 Stop Compressor NNN ES Reduce Comp Freq No Freq Increase 208 4 217 4 230 F A09347 Fig 15 Compressor Gas Discharge Temperature Protection When the compressor discharge temperature drops below 194 F the unit will resume normal operations Low Voltage Protection If the incoming voltage is below the minimum allowed E5 will be displayed on the front panel of the indoor unit Condenser High Temperature Protection Condenser high temperature can occur due to any of the following conditions e High outdoor ambient e Outdoor fan blocked e Outdoor coil blocked The outdoor coil thermistor continuously monitors the temperature and communicates with the microprocessor Depending on the temperature measured the compressor will be allowed to increase the frequency if needed to meet the load or is forced to run at the current or reduced frequency If the temperature gets excessively high the compressor will be de energized as shown below SS 133 Stop Compressor Reduce Comp Freq No Freq Increase 136 4 143 6 F A09348 Fig 16 High Temperature Protection When the outdoor coil temperature drops to 123 8 IF the unit will resume normal operations NOTE In heating the indoor fan is de energized 60 seconds after the compressor is de energized Compressor Over Current Protection Over current protection can result due to any of the following e The ambient temperature is
30. d personnel can perform basic maintenance functions such as cleaning coils All other operations should be performed by trained service personnel When working on the equipment observe precautions in the literature and on tags stickers and labels attached to the equipment Follow all safety codes Wear safety glasses and work gloves Keep quenching cloth and fire extinguisher nearby when brazing Use care in handling rigging and setting bulky equipment Read these instructions thoroughly and follow all warnings or cautions included in literature and attached to the unit Consult local building codes and current editions of the National Electrical Code NEC Recognize safety information This is the safety alert symbol A l When you see this symbol on the unit and in instructions or manuals be alert to the potential for personal injury Understand these signal words DANGER WARNING and CAUTION These words are used with the safety alert symbol DANGER identifies the most serious hazards which will result in severe personal injury or death WARNING signifies hazards which could result in personal injury or death CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage NOTE is used to highlight suggestions which will result in enhanced installation reliability or operation A WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal in
31. de where the speed is determined by the microprocessor based on the difference between the room temperature and the temperature set point as shown below High Medium Low Ts 1 8 F A09254 Fig 21 Auto Fan Heat Mode 19 Cold Blow Prevention This function prevents the cold air from blowing into a space when in heat mode When there is a demand for heating one of the following conditions occurs e Ifthe indoor coil temperature is lt 106 F 41 1 C and the room temperature is lt 75 F 23 4 C there will be a 3 minute time delay before the indoor fan runs at low speed for 5 minutes e f the indoor coil temperature is gt 106 F 41 1 C and the room temperature is 275 F 23 4 C the indoor fan will run at low speed for 1 minute After one of the above steps occur the indoor fan speed will be determined as shown below High E Medi m o Low NN 3 100 4 F 109 4 F A09354 Fig 22 Cold Blow Prevention Defrost Defrost is controlled by the microprocessor and will occur if the unit operated in the heating mode for at least 45 minutes and any of the conditions below lasted for more than 3 minutes Coil Temperature 23 32 41 F Outdoor Temperature A09355 Fig 23 Defrost The defrost cycle will terminate 12 minutes after the initiation of the defrost cycle or when the coil temperature is z50 F 10 C The defrost algorithm is shown below Defrost Initiated Defrost Term
32. dure of Indoor Unit eenen eenen 58 10 2 Removal Procedure of Outdoor Unit 18K Unit eese 61 10 3 Removal Procedure of Outdoor Unit 24K Unit 64 Summary and features Summary and features Indoor Unit GWH18AC D3DNA1BII GWH24AC D3DNA1BII Outdoor Unit GWH18AC D3DNA1B O GWH24AC D3DNA1B O Delle W m I I ll IL Remote Control so PS Sb e ela amp o Bi 8 FE YT1FF ff TIMER CM 1 Safety Precautions Safety Precautions Installing starting up and servicing air conditioning equipment can be hazardous due to system pressures electrical components and equipment location roofs elevated structures etc Only trained qualified installers and service mechanics should install start up and service this equipment Untraine
33. eeangumi dropreguener fem o o o 45 Troubleshooting 9 2 3 Check Malfunction Process Refer to indicator on indoor outdoor unit and malfunction table paste on the electric of cover or the top cover of unit to confirm the malfunction type The indicator of outdoor controller panel will display the related malfunction Some malfunctions are to be displayed on the indoor display while others will be seen on remote controller press light button 4 times continuously in 3S In below malfunction diagnoses process Y is for Yes N is for No In below malfunction diagnoses process controller panel AP1 is for outdoor controller panel Discharge electrolytic capacity and confirm voltage decreases to 20V below according to before method if not electrical shock or control panel damaged may occurr 9 2 3 1 Capacity charging malfunction outdoor unit malfunction Indoor unit display PU dual 8 display heating indicator is off for 3S and blinks 17 times Main detection point e Detect if the voltage of L and N terminal of wiring board is between 210AC 240AC by alternating voltage meter e Is reactor L well connected Is connection wire loosened or pull out Is reactor L damaged Malfunction diagnosis process Wait for 1min after the unit is energized Test the two terminal s test 3 voltage of electrolytic capacity by DC voltage meter Voltage is higher than 200V N Y Tes
34. emove the correspond ing plastic covering on side panel and drill the appropriate size hole where the pipe is going through the wall See Fig 8 c 2 Remove knockout 1 if you are running only the wiring Remove knockout 1 and 2 or knockout 1 2 and 3 if you are running both piping and wiring through the side of the unit 7 4 OUTDOOR UNIT INSTALLATION 1 Use a rigid base to support unit in a level position 2 Locate outdoor unit and connect piping and wiring 4 CAUTION EQUIPMENT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation Excessive torque can break flare nut depending on installation conditions Piping Connections to Outdoor Unit IMPORTANT Use refrigeration grade tubing ONLY No other type of tubing may be used Use of other types of tubing will void manufacturer s warranty Make sure there is enough piping to cover the required length between the outdoor and indoor unit Piping Guide Do not open service valves or remove protective caps from tubing ends until all the connections are made Bend tubing with bending tools to avoid kinks and flat spots Keep the tubing free of dirt sand moisture and other contaminants to avoid damaging the refrigerant system Avoid sags in the suction line to prevent the formation of oil traps Insulate each tube with minimum 3 8 in 10 mm wall thermal pipe insulation Inserting the tubing into the insulation before maki
35. eplace the batteries when there is no audible beep from the indoor unit or if the Transmission Indicator fails to light Set the Clock Before you start operating the air conditioner set the clock on the remote control as outlined below The clock panel on the remote controller will display the time regardless of whether the air conditioner is in use or not Initial Setting of the Clock After batteries are inserted in the remote control the clock panel will display 12 00 AM 1 Push the CLOCK button once e AM will flash 2 Push the TIME or TIME button Each time you press the button the time moves forward or backward by one minute depending on which button you press If you push the temperature button continuously the time adjusts in increments of 10 minutes 3 When the right time is achieved press the CLOCK button once to set the time The AM will stop flashing 4 To readjust the Clock Press the CLOCK button on the re mote The AM or PM will flash Repeat steps 1 through 3 NOTE Note The time of the CLOCK must be set before the AUTO TIMER function will operate A CAUTION UNIT OPERATION HAZARD Failure to follow this caution may result in equipment damage or improper operation Static electricity or other factors voltage fluctuations can cause the remote control clock to reset If your remote control is reset the time of 12 00 flashing set the clock before starting t
36. eration Never use the system compressor as a vacuum pump Refrigerant lines and indoor coil should be evacuated using the recommended deep vacuum method of 500 microns The alternate triple evacuation method may be used if the procedure outlined below is followed Always break a vacuum with dry nitrogen Keep your fingers and clothing away from any moving parts Clear the site after installation Make sure no foreign objects are left in the unit Always ensure effective grounding for the unit N Caution Never install on the place where a combustible gas might leak or it may lead to fire or explosion When the unit is installed at telecommunication centers or hospitals take a proper provision against noise When installing at a watery place provide an electric leak ground fault breaker Do not wash the unit with water Be very careful about unit transportation The unit should not be carried by only one person if it is more than 45lb Do not touch the heat exchanger fins wi th bare hands Do not touch the compressor or refrigerant piping whithout wearing glove Do not operate the air conditioner without air filter Should any emergency occur stop the unit and disconnect the power immediately Specifications 2 Specifications EN GWERCDENNS Total ET REPETI E W Standard Low High ee een 6155 7620 1820 6450 1200 7325 2300 7680 1750 8200 Total Capacity Btu h Standard Low Hi
37. ficient ventilation 3 Where there is no obstruction blocking the air inlet or outlet 4 Where it is able to withstand the full weight and vibration 5 Where itis dry and the unit is not exposed to direct sunshine or strong wind 6 Make sure that the outdoor unit is installed in accordance with the installation instructions and is convenient for maintenance and repair 7 Where the height difference between indoor and outdoor units is within 16ft and the length of the connecting tubing does not exceed 32ft 8 Where it is out of reach of children 9 Where the unit does not have negative impact on pedestrian or city amenity Safety Precautions for Electrical Wiring 1 A dedicated power supply circuit should be used in accordance with local electrical safety regulations 2 Don t drag the power cord 3 The unit should be reliably earthed and connected to an exclusive earth device by the professionals 4 The air switch must have the functions of magnetic tripping and heat tripping to prevent short circuit and overloading 5 The minimum distance between the unit and combustive surface is 5ft 6 The appliance shall be installed in accordance with national wiring regulations 7 An all pole disconnection switch having a contact separation of at least 1 8inch in all poles should be connected in fixed wiring 4 CAUTION EQUIPMENT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation Be s
38. gh 16000 25000 21000 26000 6200 22000 4100 25000 7800 26200 6000 28000 Power Input W Standard Low High La 2700 1750 2700 180 2650 240 2700 220 2660 260 2700 Raedern o to 24 1 122 15 Air Flow Volume CFM SH H ML 488 441 383 324 606 471 412 353 EER BTUW gt EER BTUW gt output ofFan Motor OT InputPowerorHeaer 7 7 gt IO A A mr OOO 40 7 15 11 45 6 16 1 12 2 Specifications Model of Outdoor Unit GWH18AC D3DNA1B O GWH24AC D3DNA1B O China Resources Shenyang Sanyo China Resources Shenyang Sanyo Compressor Manufacturer trademark CO LTD CO LTD Working Temp Range Codingheaina 41 lt T lt 115 5 lt T lt 86 EL HC CY ae x height H x coil width L 32 15 16 26 1 1 2 38 1 16 29 7 16 1 1 2 Fan Motor Speed rpm H M L 690 500 Outdoor Output of Fan Motor W 0 090 Fan Motor Capacitor uF Air Flow Volume of Outdoor Unit CFM 1883 2472 Fan Type Defrosting Method Auto defrost Auto defrost Isolation PS E Moisture Protection IP24 IP24 Permissible Excessive Operating 554 551 Pressure for the Discharge Side psi Permissible Excessive Operating 174 174 Pressure for the Suction Side psi Sound Pressure Level dB A Sound Power Level dB A 4 606 gt Dimension W H D inch 35 27 5 13 4 36 2 31 1 14 5 Dimension of Package W H D inch 40 5 28 9 18 1 41 9 33 19 Net Weight Gross Weight Ib 110 121 118 132 Refrigerant and Charge oz R410A 51 1 R410A 6
39. he unit Remote Control Operation Quick Start NOTE When transmitting a command from the remote control to the unit be sure to point the control toward the LED display on the front panel of the unit The unit will confirm receipt of a command by sounding an audible beep 1 Turn the unit on by pushing the ON OFF button 2 Select the desired mode by pushing the mode button j AUTO COOL gt DRY FNP HEAT A08301 NOTE Cool only units have no heat mode 3 Select the temperature set point by pointing the control to ward the unit and pressing the TEMP or TEMP temperature set point buttons until the desired temperature appears on screen 4 Select the desired fan speed by pressing the FAN SPEED button to select desired fan speed NOTE If unit is operating in Dry mode low fan speed will be displayed and the fan speed cannot be changed 5 Set the airflow direction When the unit is turned on the louvers default to the cooling or heating position The user can adjust the default louver position by pushing the SWING button The louver will start to move At this point the user can have the louver moving continuously or stopped when the desired position is achieved by pushing the SWING button Emergency Operation If the remote control is lost damaged or the batteries are exhausted the AUTO button on the unit can be used to run the unit Open the front cover panel and pre
40. if not electrolytic capacity will discharge and lead electric shock or burn out control panel temperature sensor 61 Removal Procedure see 3 3 OOP 4 Remove axial flow blade Loosen the clamp nut with spanner take out nuts spring washer plain washer and then remove the axial flow blade forcibly clamp nut axial flow blade Remove motor and motor support motor support Twist off the fixing screws and then take out the motor Twist oft the screws used for fixing the motor support pull it upward and then remove the motor support motor tapping screw E 6 Remove four way valve four way Unsolder the spot weld between four way valve and valve other pipes and then remove the four way valve sub assy weld spot 62 Removal Procedure see Prove 7 Remove the gas valve and liquid valve gas valve Twist off the screws used for the gas valve and liquid valve unsolder the spot weld between gas valve and return air pipe and then remove the gas valve and liquid valve liquid valve 8 Remove compressor Loosen the nuts of compressor unsolder the weld spot shown on suction pipe and discharge pipe of compressor Remove the pipeline and then remove the compressor bolt of compressor 63
41. inated SIEN SN anni WGC terier i AALY Indoor Fan IG SS Prevention Fig 24 Defrost continued AUTO MODE When the Auto setting is selected at startup the unit will run in cooling fan only or heating based on the room temperature at shown below At Startup oF Cooling 77 O FFFFFFFK SOS 644 L Heating Room Temperature A09357 Fig 25 AUTO Mode After startup and if the unit is running in cooling the compressor will be de energized when the room temperature is 73 4 F 23 C If the unit was running in heating the compressor will be de energized when the room temperature is 73 4 F 23 C There is a 6 minute time delay before modes are switched 20 Function and Control SLEEP MODE Additional energy savings can be realized by selecting the Slee mode When the sleep setting is selected the temperature set poin is adjusted automatically as shown below T 3 6 F TAKE i 177777 Cooling T18 Heating T 3 6 F 1HR 2HR A09258 Fig 26 SLEEP Mode Installation Manual 7 Installation Manual 7 1 Notices for Installation CO gt Please contact your Gree authorized service center when the unit is to be relocated Installation Site Instructions Proper installation site is vital for correct and efficient operation of the unit Avoid the following sites where strong heat sources vapour
42. ing Frame Fan Motor Motor Press Plate Pipe Clamp Drainage Pipe Stepping Motor Crank Rear Grill Electric Box Assy Electric Box 4 bit Terminal Board Main Board Jumper Capacitor Electric Box Cover2 Membrane Display Box Cover2 Display Box Receiver Window Shield cover of Electric Box Electric Box Cover1 Receiver Board D5005 Remote Controller Tube Sensor 20K black Ambient Temperature Sensor ODIE OTO TC TO T The above data are subject to be changed without notice 8 2 Outdoor Unit NW RN AAA GOTT a 33 Exploded Views and Parts List Description Part Code NE i GWH18AC D3DNA1B O Qty 6 4 wayValveAssy 08123248 1 8 SmallHande 26235401 1 9 Temperature Sensor 3900030801 1 Mainboard 30138167 1 The above data are subject to be changed without notice 34 35 Exploded Views and Parts List Description Part Code pia GWH24AC D3DNA1B O Qty 1 2 3 F Product Code CB115W0451 K54715 Cut off Valve 5 7 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 ES Es 3 5 6 ES 8 9 HO MR 12 12 14 d5 16 Hr 7 18 gt CR 20 21 Do 23 24 25 26 or 28 29 30 31 32 po The above data are subject to be changed without notice 36 9 Troubleshooting 9 1 Troubleshooting This section provides the required flow charts to troubleshoot problems that may arise NOTE
43. int and time e Press the On Off button to start the unit The unit will start in the last operating mode and set point The OPER indicator will appear The RUN indicator on the display panel turns green e Press button On Off to stop the unit The RUN indicator light on the display panel will turn red and the remote control will display the setpoint and time OPER will disappear NOTE If the On Off button is pressed too soon after a stop the compressor will not start for 3 minutes due to the inherent protection against frequent compressor cycling Selecting an Operating Mode Use the Mode button to select one of the available modes i AUTO COOL DRY EN HEAT A08303 A08301 The selected mode will be displayed on the remote control and the appropriate light will illuminate on the display panel When the unit is in AUTO 77 F 25 C will show on the display panel There is no icon for FAN ONLY on the display panel Setting the Room Temperature Set Point Pressing the TEMP and TEMP buttons will raise or lower the temperature The unit will confirm signal receipt with a beep and the value of the set temperature on the display on the remote control and on the front panel will change accordingly The temperature can be set between 61 F 16 C and 86 F 30 C NOTE In Cooling mode if the temperate selected is higher than the room temperature the
44. ion Indoor display H7 dual 8 display heating indicator is off for 3S and blinks 7 times Main detection point Is the system pressure over high Is the work voltage over low Malfunction diagnosis process Synchronism after Synchronism energize the unit occurred during and start it operation If the stop time of compressor is more than 3min If the outdoor fan works normally Check if the fan N terminal OFAN is connected well If the radiating of unit is well Improve the radiating of unit clean heat exchanger and increase ventilation If the compressor wire COMP UVW is well connected the connection sequence forwards to clockwise direction If the input voltage of unit is Start to run until the N power resume normal voltage A Connect Y normal wire well Replace Y control board AP1 Charge the If the refrigerant is too much Y refrigerant with service manual Remove E malfunction Replace Control board AP1 Replace compress Remove malfunction Y finish N Y Y Replace compressor Replace fan capacity C1 Replace outdoor fan 4 finish b id Y 50 9 2 3 6 Diagnosis of overload and discharge malfunction EO a unit malfunction Indoor display H3 dual
45. is 10 T a farse p x 10 emperature sensor DB De Ex cag B oman ai A f Dit ZE 528 eos E E nn i Display port tl AR U l 4 I HH N Port of communication with outdoor unit B T a E ze S Lr o C134 C139 12 13C136 c137C14 il TEN SMT T rso PTCF ar tr SF FE R89 vl PERERERPRE ui ee A Aa C102 e BOTTOM VIEW D in T TI IE nus OO mama m 10 Schematic Diagram Outdoor Unit e TOP VIEW Ge 2 5 pee c RN Ses we Frp La UH So fere LE T opero db BESSA WS sise U2 IN C219 Port Name Port Name E Compressor port zc Compressor overload protector 5 Fan HALL port jean CR o omms f e BOTTOM VIEW Port of communication with indoor unit Neutral line Reactor port 2 ER EDS TE AG E O uns Son kK pti LILILILILILILR RE ILIL H Ni EU LIE Om m Rum z m n pel ot pug 55 TR 9 mm uo Ll E ris 11 6 7 em HT O L mn qo R170 R113 C EFARIES Ed Gur ce2 e E 6 Function and Control 6 1 Unit Display Panels NOTE The display panel on the indoor unit can be turned on or off using the remote control Press the SWING button twice to turn the display on and off Some of the functions will appear on the display panel on the remote control or both
46. jury or death Before installing modifying or servicing system main electrical disconnect switch must be in the OFF position There may be more than 1 disconnect switch Lock out and tag switch with a suitable warning label O Highly dangerous electrical voltages are used in this system Carefully refer to the wiring diagram and these instructions when wiring Improper connections or inad equate grounding can cause accidental injury or death Ground the unit according to local electrical codes Connect all wiring tightly Loose wiring may cause over heating at connection points and a possible fire hazard e Make sure the ceiling wall is strong enough to hold the unit s weight The outdoor unit should be installed in a location where air and noise emitted by the unit will not disturb the neighbors O Properly insulate any refrigerant or condensate linerunning inside a room to prevent sweating that can cause dripping water and damage to walls and floors The outdoor unit must be installed on stable level surface where there is no accumulation of snow leaves or rubbish The unit should be installed according to the instructions in order to minimize the risk of damage from earthquakes hurricanes or strong winds Contact of refrigerant and fire generates poisonous gas Use specified refrigerant only A CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper op
47. l outside to inside 3 Lift indoor unit into position and route piping and drain through hole in wall inside to outside Fit interconnecting wiring into back side of indoor unit 4 Hang indoor unit on upper hooks of wall mounting plate as shown in Fig 13 q Fig 13 Hanging Indoor Unit A08283 5 Open front cover of indoor unit and remove field wiring ter minal block cover see Fig 14 26 A09666 Field Wiring Cover Interconnecting Cable A08279 Fig 14 Field Wiring Cover 6 Pull interconnecting wire up from back of indoor unit and position in close to the terminal block on indoor unit 7 Push bottom of indoor unit onto mounting plate to com plete wall mount 8 Connect wiring from outdoor unit per connection diagram see Fig 12 NOTE Polarity of power wires must match original connection on outdoor unit 9 Replace field wiring cover and close front cover of indoor unit 10 Connect refrigerant piping and drain line outside of indoor unit Refer to Fig 10 for proper installation of flare connec tions Complete pipe insulation at flare connection then fasten piping and wiring to the wall as required Com pletely seal the hole in the wall A CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation Never use the system compressor as a vacuum pump Refrigerant tubes and indoor coil should be evacuated using the
48. leetonoren mame AC current detect ra maana le meme Compressor reverse protegi wa ic mes Dvercompressorphasecumenpmedion PO pic mes nletube sensor malfncien sp pica mes S Outdoor oC fan motor malfuneion fs H G T outetube sensor malnctn f r O pia mes Bormannin o po Compressoroveioadsensermammelon le Deo EE Succeammgdustpromeelon emee Compressorovertoadproiedion mm ne times System abnomalprotecion o fu 0 foink imes ipmiproteeton mm sims PEO proto mo foinkoimes Kompessersssteppmdon eee Heating ani high temperature drop Requeney ju foinkioimes Sempre O CST Compressor prolecion againstioss orphase ne tes Compressor phase urent delecon aru malamente Compressor demagnetzalon protection he nera times losimgEEPROMmalundon oem Communication fare between main board and dmverboad P6 ci times Capaotorchargemaltuneton fm 0 foinktrimes PWsensordmutmalundon cr mes S PM igh temperature protecton fem 0 foinkioimes PN voltage drop protection fu 0 foinkzoimes Low PN vollage protection fm times Current detect creutmaituncion or Currentsensormaltuneion Pe Compressorloss ofphaseprotecion fu TT Compressoriockedroryproieeion H LLL PWowrtmpemueimi dopfequenmy Je po awayvaleremrsatabnome wp Disconnection ofthe eshausttemperature sensor O Cpowermmwlagedemdemr fe TT Over ube temperature drop eue Ani r
49. move the front cover of the unit and then control box cover Carefully remove the indoor board from the control box place it face up on a plastic surface not metal Reconnect the main power and repeat steps 5 6 and 7 Disconnect main power before reinstalling board to avoid shock hazard and board damage Unit has a problem Unit displays a diagnostic code Refer to page identify error code and use appropriate diagnostic chart Unit not running and no diagnostic code Go to chart 8 2 For problems requiring pressure measurements 1 Connect the low pressure gauge to the gauge connection port on the suction service valve Set compressor speed using the system remote control as follows COOLING Select a set point of 66 F and push the sleep button 4 times HEATING Select a set point of 84 F and push the sleep button 4 times With the system operating at steady state conditions make the following measurements a Outdoor ambient temperature b Compressor discharge temperature as close to the compressor as possible c Suction pressure 4 Refer to the Appendix and select a suction pressure and discharge temperature range based on the outdoor ambient temperature for either cooling or heating Compare the measured pressure and temperature to the values in the chart to determine if the operating pressures and temperatures of the systems are normal or not Unit running but not optimally
50. n the room temperature and the temperature set point as shown below Outdoor Fan Indoor Fan A09249 Te Ts 3 6 F A09250 Fig 19 Auto Fan Cool Only Mode Heating Mode In this mode the system heats the room air with the indoor fan running at either the selected speed or on Auto As the cooling mode the indoor fan will run continuously unless interrupted by the cold blow algorithm This algorithm will not allow the fan to run 1f the indoor coil temperature drops below a preset value Compressor and fan operation As shown below the compressor and outdoor fan cycle on and off based on the actual room temperature versus the set point The outdoor fan is de energized 30 seconds after the compressor is de energized The reversing valve is energized in heating and will stay energized for 2 minutes after the compressor is de energized The reversing valve is energized 2 seconds before the compressor Is energized T 9 F T 3 6 F i i I 1 Tg 9 F I 1 i Compressor i matches load U Ts 3 6F Lp eme nie Compressor RRR z3minutes AN Nl N N III NS Q 1 Outdoor Fan NANN 5 AN Cold Blow KE Indoor Fan RQ AN prevention A09252 Fig 20 Heat Mode Indoor Fan Operation Heating When in heating mode as long as the coil temperature is above the threshold for cold blow prevention the fan runs continuously either at the chosen set speed or in Auto mo
51. nection Check RV connection on outdoor board Ok Yes Check RV output on outdoor board Ok Replace outdoor board Yes Check RV solenoid Ok Replace solenoid Yes Replace reversing valve Fig 39 Reversing Valve 43 A09370 A09371 DIAGNOSTIC CHARTS CONT Check wiring and connection between receiver and ID board Ok Fix wiring or connection Check input and output on ID and receiver Replace receiver board boards Ok Replace remote control Fig 40 Receiver Board 44 A09372 9 2 2 Blinking LED of Indoor Outdoor Unit 140 Name of malfunction Display of double Display of lamp eight code Running lamp Cooling lamp Heating lamp Eos ani ee ngprotecien fer ames 1 Compressorehaustivghlemperalue protestan Jes ei mes o oS Ac overcurentprotecten eee SOSO Communication failure between indoor unitand ouldoorunt fes oi tes po TT ant highiemperature protection f ei mes o No feedback ofindoor fan marier po Jumper cap malfunction proso o 65 eii mes indoor ambient sensor open or shore eem doort besensoropenorshotdmut fee ei mes Outdoor ambient sensor open orshortoreut E tes fOudooriubesenseropenorshonereut e O its Exwustsensoropenorshotewadt b pits STH ei times Over current imp fequeney o mms ighemausttemperaturemit eroprequener fo mom Cwervoliagepro
52. ng the connections will save time and improve installation quality 1 Remove service valve cover if provided with unit 2 Cut tubing with tubing cutter 3 Install correct size flare nut onto tubing and make flare con nection 4 Apply a small amount of refrigerant oil to the flare connec tion on the tubing 5 Properly align tubing in with service valve 6 Tighten flare nut and finish installation using two wrenches as shown in Fig 10 A07354 Fig 10 Tighten Flare Nut 29 INSTALL ALL POWER AND INTERCONNECTING WIRING TO OUTDOOR UNIT IT Son O x Fig 11 High Wind Installation E E E TI a A07350 Outdoor Unit Wiring Connections 1 Mount outdoor power disconnect 2 Run power wiring from main box to disconnect per NEC and local codes Set outdoor unit in place 3 Remove field wiring cover fromunit by removing screws 4 Connect conduit to the conduit panel See Fig 12 5 Properly connect both power supply and control lines to ter minal block per the connection diagram 6 Ground unit in accordance with NEC and local electrical codes 7 Use lock nuts to secure conduit 8 Reinstall field wiring cover A CAUTION EQUIPMENT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation Be sure to comply with local codes while running wire from indoor unit to outdoor unit Every wire mu
53. on again Sometimes in the heating mode when the SWING button is 15 pushed the louvers will not start moving right away This is due to the fact that the fan will not start running until the coil temperature is warm enough to prevent discomfort to the user by blowing cold air Selecting Vertical Direction of the Louver The vertical louvers can be adjusted manually to direct the airflow to achieve the optimal comfort in the space A07543 Timer Function TIMER ON to start the unit and TIMER OFF to stop the unit can be used separately or together The clock on the remote control must be set before using this function Timer ON onl UU OOF Timer ON Indicator Ts ER AM nnn TT LIO LUO A08305 This function will allow the unit to start automatically at the set time The TIMER ON can be set while the unit is on or off To set the TIMER ON function perform the following 1 Push the T ON button once 2 The timer indicator will appear on the remote control with ON flashing 3 Push the TIME or TIME until the desired on time is reached NOTE Pressing the TIME or TIME will decrease or increase the time in 1 minute increments Pressing the TIME or TIME continuously will decrease or increase the time in 10 minute increments 4 Push the T ON again The ON icon will stop blinking and the time at which the unit will start is set The
54. on terminal S and the black probe on terminal N Reconnect Na No further action is wiring when measurements are complete required Reset main power and restart system using remote Problem persists Yes Measure Volts DC on Y Measure Volts DC on R And outdoor TB between S amp N es indoor TE between SEN g se connections Ok Ok Replace outdoor board Replace indoor board Thermostat wires cannot be used Wires should be connected per connection diagrams Failure to do that will result in a communication error Polarity needs to be maintained between indoor and outdoor units There is 3 minutes to make the measurement before the diagnostic light comes back on A09362 Fig 30 Communication Error Reser mall powershe No further action is required restart system using remote Problem persists Yes Check sensor connector at ID or OD board Connection good Fix connection Yes Check input and output on indoor or outdoor board Replace board Yes Check sensor resistance Replace sensor Appendix A4 Yes Double check connection for corrosion or high resistance A09363 Fig 31 Temperature Sensor 39 DIAGNOSTIC CHARTS CONT Yes Is unit running in outdoor ambient higher than Beyond operating range 110 F Clean coil Outdoor coil clean Problem persists Problem solved Check outdoor coil temperature thermistor Chart 4 ok
55. ons A CAUTION EQUIPMENT DAMAGE HAZARD Failure to follow this caution may result in equipment damage Handle the control with care and avoid getting the control wet IMPORTANT The remote control can operate the unit from a distance of up to 25 ft 7 6 m as long as there are no obstructions This is one way communication only from remote control to fan coil The remote control can perform the following basic functions e Turn the system ON and OFF e Select operating mode e Adjust room air temperature set point and fan speed e Adjust airflow direction Refer to the Remote Control Function section for detailed description of all the capabilities of the remote control Battery Installation Two AAA 1 5 v alkaline batteries included are required for operation of the remote control To install or replace batteries 1 Slide the back cover off the control to open the battery com partment 2 Remove old batteries if you are replacing the batteries 3 Insert batteries Follow the polarity markings inside the battery compartment 4 Replace battery compartment cover A08299 NOTE 1 When replacing batteries do not use old batteries or a different type battery This may cause the remote control to malfunction 2 If the remote is not going to be used for several weeks remove the batteries Otherwise battery leakage may damage the remote control 3 The average battery life under normal use is about 6 months 13 4 R
56. oor mainboard damaged Is the communication circuit of outdoor mainboard AP1 damaged Malfunction diagnosis process Com If the unit is operation normal before malfunction Y Check connection wire of indoor and outdoor unit with circuit diagram v Check if controller connection wire g E of indoor and outdoor electric box is Y recen correct loosened Check connection wire of indoor and outdoor unit with circuit diagram If the connection wire o electric box is normal d N Check connection wire of indoor and Y outdoor unit with circuit diagram Y Check communication circuit of outdoor unit If the malfunction is removed Replace outdoor Y mainboard AP1 f the malfunction is removed f the malfunction is emoved Problem of communication circui N v Replace indoor mainboard Y Y Y C Finish gt y 93 Troubleshooting Diagnosis process for outdoor communication circuit refer to key test point of outdoor unit Es Test voltage value with Test 10 position in diagram with voltage meter Number jumping Y v Test voltage value with Test 15 position in diagram with voltage meter Y N Number jumping Y v Test voltage value with Test 11 position in diagram with voltage meter
57. oor unit malfunction Indoor display HC dual 8 display heating indicator is off for 3S and blinks 6 times Main detection point e Check if reactor L of outdoor unit and PFC capacity are damaged Malfunction diagnosis process q Start b l Check the connection wire of reactor L of outdoor unit and PFC capacity Replace connection If there is damaged short If the malfunction is circuit emoved wire with circuit diagram v Hemove PFC capacity and test resistance of N two terminals Capacity is E He energize Y the unit and If the resistance If the malfunction is GO circuit and start it replace it emoved N Cut the terminal of reactor test the resistance between two terminals of reactor with ohmic meter Re Replace the energize If there is damaged If the malfunction is reactor the unit and start it short circui removed Y Replace control board N AP1 v 1 Finish b 52 Troubleshooting 9 2 3 8 Communication malfunction outdoor unit malfunction Indoor display E6 dual 8 display heating indicator is off for 3S and blinks 6 times Main detection point e Check if the connection wire and the built in wiring of indoor and outdoor units are connected well and not damaged Is the communication circuit of ind
58. op air conditioner operation and all other features of the Remote Control and display panel How to remove and clean the air filter How to set air deflection louver Explain care and maintenance Present the Owner s Manual and installation instructions to customer 8 Exploded Views and Parts List 8 1 Indoor Unit 29 Exploded Views and Parts List Description Part Code i GWH18AC D3DNA1 B Qty NO 1 2 3 4 9 T 34 ElectricBoxCover2 1 2011400904P 1 85 Membrane none 0 37 Display Box none 0 38 Receiver Window none 1 0 39 Shield cover of Electric Box 01412010 1 40 ElectricBoxCovert_________ 201140000 1 41 Receiver Board D5005 30545052 1 42 Remote Controller 30510000 1 43 l TubeSensor 20K black 390000591 1 44 Ambient Temperature Sensor 390000451 1 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 20 26 21 28 29 30 31 32 33 The above data are subject to be changed without notice 30 31 Exploded Views and Parts List Description Part Code p GWH24AC D3DNA1B I ouver Swing Connecting Rod Louver Clamp Axile Bush guide louver Water Tray Water Tray Glue Plug Water Tray Assy Rear Case Cross Flow Fan O Gasket sub assy of Bearing Cross Flow Fan Bearing Holder sub assy Evaporator Supporter Evaporator Assy Wall Mount
59. r handle Screw 2 Remove grille and right side plate Twist off the screw around the grille and then remove the grille Twist off the screws between right side plate and end plate of condenser valve support pull it upward and then remove the right side plate A 3 Remove electric box Disassemble the screws on electric box cover pull out the temperature sensor and then remove the electric box Ensure don not contact control panel when removing electric box cover if not electrolytic capacity will discharge and lead electric shock or burn out control panel Temperature sensor 58 Removal Procedure Step Procedure 4 Remove axial flow blade Loosen the tight nut with spanner and remove the nuts spring washer plain washer then remove the axial flow blade forcibly clamp nut axial flow blade 5 Remove motor and motor support Twist off the clamping screws take out the motor twist off the screws used for fixing the motor support pull it upward and then remove the motor support motor 6 Remove electronic expansion valve and four way valve four way valve Unsolder the spot weld between electronic expan sion Pee valve and other connection and then remove the o valve electronic expansion valve Unsolder the spot weld between the four way valve and other connection and then remove the four way valve 59 Removal Procedure La Remove the gas v
60. rging appropriate Malfunction diagnosis process Energize the unit and start it Test the voltage between L N of Y wiring board XT by AC voltage meter Is L N voltage of XT in 210VAC 250VAC IPM protection happened after the unit is running for a period time Y Y Start the unit test voltage test 3 of Two terminals voltagel test3l of Is voltage input in the normal range Test the voltage between L N of wiring board XT by DC voltage meter Is coil resistance of compressor normal Is there reliable insulation between compressor coil and copper tube Check voltage of power supply and make it resume to 210VAC 250VAC Does the unit electrolytic capacity on N control board AP1 with DC voltage meter before protection electrolytic capacity is higher than 250VT N YK work normally Re connect capacity C2 with circuit wiring diagram and energize the unit start it Please confirm y z 1 If the heat EE situation of capacity C2 exchanger of with circuit wiring onnection of capacity Y outdoor and diagram after the unit is 19 loosened indoor unit is de energized dirty If there is barrier to N influence exchanger of outdoor and Remove connection wire Turn off power supply and indoor unit of capacity C2 test it su n 20min or e 2 If the indoor with capacitance meter Tara CENA ds and outdoor f
61. s flammable gas or volatile liquids are emitted e high frequency electro magnetic waves are generated by radio equipment e welders and medical equipments are placed e salt laden air prevails such as close to coastal areas the air is contaminated by industrial vapours and oils e the air contains sulfer gas such as in hot spring zones e the air has deteriorated or there is high possibility of corrosion Installation Site of Indoor Unit Install the indoor unit 1 Where airflow is not blocked and cool air spreads over the entire room 2 Where the condensing water can be easily drained out and where it is easily connected to outdoor unit 3 Where it is out of reach of children 4 Select the place where the wall is strong enough to withstand the full weight and vibration of the unit 5 Be sure to leave enough space to allow access for routine maintenance The installation site should be 98inch or more above the floor 6 Where it is 39 inch or more away from TV set or any other electric appliances T Select a place where the filter can be easily taken out 8 Make sure that the indoor unit is installed in accordance with installation dimension instructions 9 Do not use the unit in the laundry or around the swimming pool etc 21 Installation Manual Installation Site of Outdoor Unit Install the outdoor unit 1 Where noise and outflow air emitted by unit will not annoy neighbors 2 Where there is suf
62. ss the AUTO button once briefly when the system is off To stop emergency operation push the AUTO button once The emergency operation can also be stopped by pushing the ON OFF CLOCK T OFF or T ON twice AUTO button A08300 The following occurs when the AUTO button is pushed e 77 F 25 C will be displayed on display panel e Unit will run in FAN ONLY mode if return air temperat ure is between 68 F 20 C and 77 F 25 C e Unit will run in HEATING if return air temperature is less than 68 F e Unit will run in COOLING if return air temperature is greater than 77 F 25 C e Fan speed will be set to AUTO e SWING will be on 14 REMOTE CONTROL FUNCTIONS The remote control is the interface between the user and the high wall systems Commands are entered by the user to control the system Any command that has been entered with the remote control will remain in the memory until it is changed by the user or the batteries are replaced NOTE When entering commands point the remote control in the direction of the LED display on the front panel The A will appear for a short period of time on the remote control when the command is entered The unit will only emit an audible beep when the signals are received correctly On Off Button DID LILIT 1 08 88 A08302 When the air conditioner is not in operation the remote control will display the last set po
63. st be connected firmly Loose wiring may cause terminal to overheat or result in unit malfunction A fire hazard may also exist Therefore be sure all wiring is tightly connected No wire should be allowed to touch refrigerant tubing compressor or any moving parts Disconnecting means must be provided and shall be located within sight and readily accessible from the air conditioner Connecting cable with conduit shall be routed through hole in the conduit panel Outdoor unit Terminal Block mmm U Conduit panel if K Conduit ie 115 1 60 Connection Diagram t N t n ep s Main Power to Power Indoor Supply Unit 115 1 60 Outdoor Units Ground Control CONNECTING CABLE OUTDOOR TO INDOOR Indoor Unit Power Supply 115 1 60 Indoor Units Ground Control 208 230 1 60 Connection Diagram CONNECTING CABLE LL OUTDOOR TO INDOOR 7 Po ut az 11 12 GND SS Main Power to Power Indoor Supply Unit 208 230 1 60 208 230 1 60 208 230 1 60 Outdoor Units Ground Control ts 12 GND Indoor Unit Power Supply 208 230 1 60 208 230 1 60 Indoor Units Ground Control Fig 12 Field Wiring INSTALL ALL POWER INTERCONNECTING WIRING AND PIPING TO INDOOR UNIT 1 Run interconnecting piping and wiring from outdoor unit to indoor unit 2 Pass interconnecting cable through hole in wal
64. t and efficiency 3 Minute Time Delay In order to protect the compressor there is a 3 minute delay on break even if the control is calling for heating or cooling Indoor Coil Freeze Protection When the unit is running in the COOL or DRY MODE the indoor coil can freeze due to any of the following e Low system charge e Reduced indoor airflow e Restricted refrigerant flow e Low ambient temperature outdoor e Low load indoor The indoor coil thermistor monitors the coil temperature continuously Any time the coil temperature drops below 30 2 F 1 C the compressor and the outdoor fan 30 seconds later will be switched off until the coil temperature rises above 42 8 F 6 C and the compressor was off for a minimum of 3 minutes Compressor TNN SSN ANN SS AN ANN ANNAN 42 8 F Outdoor Fan Indoor Fan 30 2 F A09346 Fig 14 Coil Freeze Protection High Compressor Discharge Temperature The compressor discharge temperature can be high due to any of the following Low refrigerant charge e Blocked capillary The compressor discharge line thermistor continuously monitors the temperature and communicates with the microprocessor Depending on the temperature measured the compressor will be allowed to increase the frequency to meet the load or is forced to run the current or reduced frequency If the temperature gets excessively high the compressor will be de energized as shown
65. t the DC voltage between L N terminal of wiring board XT Malfunction of circuit is detected Replace Y by voltage of control board controller board AP1 AP1 Turn off and Feier peer Re energized oltage is between N supply make to turn on the If the malfunction is Y 210VAC 250VAC voltage resume removed gt 210VAC unit 250VAC Y Turn off power supply and waiting for 20min or test voltage of capacity s two N terminals test 3 by DC voltage meter until the voltage decreased to 20V Check the connection of reactor L in the circuit wiring diagram Connect the i o wiring of Re energized P um S reactor L wiring e maltunction IS SEM N reactor L with to turn on the removeda Y circuit wiring unit diagram Y Replace control board N AP1 46 9 2 3 2 IPM protection desynchronizing malfunction phase current of compressor is overcurrent outdoor unit malfunction Indoor display H5 dual 8 display heating indicator is off for 35 and blinks 5 times P5 dual 8 display heating indicator is off for 3S and blinks 15 times H7 dual 8 display heating indicator is off for 3S and blinks 7 times Main detection points Are control board AP1 and compressor COMP well connected Are they loosened Is the connection sequence correct Is the work load of unit heavy Is radiating of unit OK Is the refrigerant cha
66. tal Pay close attention to feeder tubes making sure wire ties on feeder tubes are secure and tight START UP Test Operation Perform test operation after completing gas leak and electrical safety check 1 Push the ON OFF button on Remote Control to begin testing NOTE A protection feature prevents the air conditioner from being activated for approximately 3 minutes 2 Push MODE button select COOLING HEATING FAN mode to check if all functions work correctly SYSTEM CHECKS 1 Za Conceal the refrigerant and condensate lines where possible Make sure that the drain line slopes downward along its en tire length Ensure all refrigerant and condensate lines and connections are properly insulated Fastenrefrigerant and condensate lines to the outside wall when possible Seal the hole through which the cables and refrigerant and condensate lines pass INDOOR UNIT Li Do all Remote Control buttons function properly 2 Do the display panel lights work properly 3 4 Does the air deflection louver function properly Does the drain work OUTDOOR UNIT 1 Are there unusual noises or vibrations during operation 28 Explain Following Items To Customer With The Aid Of The Owner s Manual li nm RU P How to turn air conditioner on and off selecting COOLING HEATING and other operating modes setting a desired temperature setting the timer to automatically start and st
67. ure to comply with local codes while running wire from indoor unit to outdoor unit Every wire must be connected firmly Loose wiring may cause terminal to overheat or result in unit malfunction A fire hazard may also exist Therefore be sure all wiring is tightly connected No wire should be allowed to touch refrigerant tubing compressor or any moving parts Disconnecting means must be provided and shall be located within sight and readily accessible from the air conditioner Connecting cable with conduit shall be routed through hole in the conduit panel NOTE Polarity of power wires must match original connection on outdoor unit Earthing requirements 1 Air conditioner is type I electric appliance Please ensure the the unit is reliably earthed 2 The yellow green wire in air conditioner is the earthing wire which can not be used for other purposes Improper earthing may cause electric shock 3 The earth resistance should accord to the national criterion 4 The user s power must have reliable earthing terminal Please don t connect the earthing wire with the following 1 Water pipe 2 Gas pipe 3 Contamination pipe 4 Other place that professional personnel consider is unreliable 5 The model and rated values of fuses should accord with the silk print on fuse cover or related PCB 22 Installation Manual 7 2 Installation Drawing Dae Space to the ceiling Space to the all

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