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1. TWHT TWH D No Name E mme E iss ow DI MP om SI 9 Wiri inal of displ LABEL C EE a En E 4 iring terminal of display g KEN Ne board 4 RET TT Interface of power cord I M mE 4 DC fan ws mu us C ANN SS i By pass valve POWER um D Der P i E iq E 1 RK E EEE mu i qu a E E E a co i x a 6 Electric heating of chassis HI D A E xem E Ro eo E d MB z 7 f4 en Bt inn TO irn 5 7 4 way valve way valve mom 4 CH TY E fy EU gt 8 AC fan sau tas ous We EI aa Edd a E afz 1 H umane LIES Lo CIO er Ba 9 Electric heating belt ILL LI iL fr E ze om ei i i i EE c RR C ED ee 7 AS PEEN 7 10 Communication terminal C63 um m cl e ls SC S 2 ua m ES EE ERE ly u High pres
2. Fig 24 Y x the drain hose can t e upwards 8 6 a my Fig 25 ASS U shaped curve Fr drain hose Note 1 The through wall height of drain hose shouldn t be higher than the outlet pipe hole of indoor unit As show in Fig 25 2 Slant the drain hose slightly downwards The drain hose can t be curved raised and fluctuant etc As show in Fig 26 3 The water outlet can t be placed in water in order to drain smoothly As show in Fig 27 29 Service Manual x The drain hose can t be fluctuant x 8 8 Check after Installation and Test Operation LJ 8 1 Check after Installation x x Tie water Check according to the following requirement after finishing outlet can t installation H The drain 4 be placed gt 3 gt MS can t in water NO Items to be checked Possible malfunction be fluctuant R R a RE Fig 27 Has the unit been The unit may drop shake or P TO cant be fluctuant installed firmly emit noise LE Have you done the lt may cause insufficient cooling Fig 26 refrigerant leakage test heating capacity Is heat insulation of It may cause condensation and pipeline sufficient water dripping i lt may cause condensation and 2 8 7 Vacuum Pumping and Leak Detection Ji
3. 47 Installation and Maintenance Service Manual Part Code GVH48AH M3DNA5A O Product Code CHO90W00500 3 Above data is subject to change without notice Description Z O QW 10 12 4 15 16 17 18 19 20 21 22 3 4 25 26 27 28 29 30 31 2 33 34 35 36 37 8 9 40 41 42 NIN CA m m z ov UU zu ojm nio A lt m m Ols z O O ojoj jo 3 a OSlo D o vlo o elo O O alaja jo Ko ER ojajo a 5 ol vols 2 2 a I u o gt be N Ml Ee o le olle o o Sopa c 0 So lojw 3 SID ala Fle wp g g 5 amp O Io lt 0 7 a 2 1mio 03 E a Slug 5 UU elSalL 9 2 o ixlol u UU D olol alolo 3 D 2 mio gt E x a ajx x EI x 9 3 3 H m 9 clo gt e 315 gt gt D I O ca Zo E ol n D D o 0 7 ke 12 D oja lt a gt lt 5 a9 Di lt S Zo S ola o o c 9 Eg E a m amp amp gt o E Sie gt JNE S E o 09 lt 3 amp c T 2 A S o lt 5 lt O S O E 5 lt Q Q Di o B a a mn D o E Di zA o I c T gt n o lt O IA UO 9 els 3 gs s le n S als 0 Dise Io Ke Ke o u O Sole vals 21013 lol TNC oe ET SIP eio oo lt TOO T ols 53 oe 18 Ka kel o o 0171919 Celolal c op alt Uls n o SR 19 ISD o Is 15 o OIS c Q o lt gt in Q lt A 3 2 amp 6 9 o 12 1
4. LL E 5 o AAA L 90 a A s mes 2 80 o E S 80 o 70 of S amp zo 8 60 C8 Condition Indoor DB20 C WB15 C Condition Indoor DB27 C WB19 C 50 O1 Indoor air flow Super High 60 Indoor air flow Super High H Pipe length 5m Pipe length 5m 40 mmm SE E Kg e E GEES GEES GE S 50 30 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 10 5 0 5 7 10 Outdoor temp C Outdoor Temp C 2 3 Cooling and Heating Data Sheet in Rated Frequency Cooling e EE Pressure of gas pipe Inlet and outlet pipe Rated ah N C connecting indoor and temperature of heat outdoor unit exchanger P MPa meo 1206 27 19 35 24 0 8 1 0 8 0 12 43 39 Super High Fan speed of Fan speed of indoor unit outdoor unit Heating S Pressure of gas pipe Inlet and outlet pipe pene Tee C C connecting indoor and temperature of heat Fan speed of Fan speed of outdoor unit exchanger indoor unit outdoor unit P MPa Tico Gr 36 38 74 22 Super High Instruction T1 Inlet and outlet pipe temperature of evaporator T2 Inlet and outlet pipe temperature of condenser P Pressure at the side of big valve Connection pipe length 5m 0 09 Technical Information Service Manual 3 Outline Dimension Diagram 3 1 Indoor Unit 400 580 Unit mm Technical Information o e 3 2 Outdoor Unit 1107 Unit mm
5. e Display status of swing BLOW Function e When the typeface light is on it indicates setting the BLOW function E HEATER Function e This icon on the displayer turns on indicates that the E HEATER function turned on the electrical heating according to a certain condition it can put into use TIMER Function When the typeface light is on it indicates setting the timer function S E HEATER TIMER SLEEP Function e When the typeface light is on it indicates setting the sleep function Technical Information 15 Service Manual 16 6 2 Description of Each Control Operation 1 Basic Functions 1 1 Cooling Mode When Tamb gt Tpreset 1 C the unit will run in cooling mode Meanwhile compressor and outdoor fan will run Indoor fan will run at setting fan speed When Tamb sTpreset 1 C the unit will stop running in cooling mode Compressor and outdoor fan will stop running while indoor fan is still running at setting fan speed When Tpreset 1 C Tamb Tpreset 1 C the unit will keep previous running status 1 2 Dry Mode When Tamb Tpreset 2 C the unit will run at cooling mode Meanwhile compressor and outdoor fan will run Indoor fan will run at low fan speed When Tpreset 2 C lt Tamb xTpreset 2 C compressor and outdoor fan will run for 6mins and then stop running for 4mins and they will run like that circularly Indoor fan will run at low fan speed Whe
6. HU UN HIN Service Manual Technical Information Service Manual 4 Refrigerant System Diagram Cooling amp Heating model Indoor unit Outdoor unit Gas pipe i side NES Valve E an Heat exchanger Compressor evaporator pres ye Heat OY exchanger Liquid pipe condenser i Y side n Valve OQ M pul Strainer Electronic Strainer expansion s COOLING lt t HEATING Connection pipe specification Liquid pipe 3 8 9 52mm Gas pipe 5 8 16mm Technical Information o e Service Manual 5 Electrical Part 5 1 Wiring Diagram e Instruction Symbol Symbol Color Symbol Symbol Color Symbol m e Su pe O TN e Indoor Unit J RT CN7 J CN411 AP2 ROOM TEMP 9 7 MAIN BOARD SENSOR TR OUT1 TR OUT2 1 RT2 lt lt CN6 CN390 CN391 TUBE TEMP 7 AP1 MAIN BOARD y y SENSOR NS TR IN LAA NAM AAZ SAND E cia TRANSFORMER DISPLAY APA 77 5 CNB BOARD TERMINAL N1 X632 T BOARD Su Q lt FAN X1 N1 X632 gt HNO d BU RD BK BK O COM X10
7. 12 Soldering appliance refrigerant container 23 Service Manual 8 Installation 8 1 Installation Dimension Diagram o SEH A iind from obs cles 200 ios S emmen aen ap A from wall 30cm at least for piping side Away from back side Away from obstacled 60cm above Away fi Sa ror n ob st 60cm above acles e o Installation and Maintenance Service Manual Installation Procedures Start installation Preparation before installation for electric connection location e the a Ce ee Prepare tools Select indoor unit Select outdoor unit installation location installation location Install the support of outdoor unit Drill wall holes select it according to the actual situation Connect pipes of indoor Fix outdoor unit unit and drainage pipe Connect wires of indoor unit Install drainage joint of outdoor unit only for cooling and heating unit C Bind up pipes Connect pipes of outdoor unit Make the bound pipes pass through the wall hole and then co
8. Malfunction is eliminated no es Is the fan motor running abnormally is the fan speed too y low or does it fail to run no Check the motor and reinstall the motor to have the fan run normally no Malfunction is eliminated leasure the current of live wire n the main board with a clamp ampere meter Is the current higher than the value of the overcurrent protection no yes Replace the controller no yes Malfunction is eliminated Is there blockage inside the system Filth blockage ice plug greasy blockage the Y valve hasn t been opened completely yes no Flush the heat exchangers with high pressure nitrogen no Malfunction is eliminated Is the compressor running abnormally Is there abnormal sound or oil leakage is he temperature of the shell too high etc yes no Replace the compressor no yes Malfunction is eliminated Replace the control panel End 36 Installation and Maintenance Service Manual 9 3 Judgement by Flashing LED of Outdoor NO Name of malfunction Outdoor Display Error Code 10 11 12 13 14 15 16 17 18 E1 E2 E3 E EG 19 20 21 IPM high temperature protection Over voltage protection for PN Low PN voltage protection 22 23 24 Current Detect Sensor malfunction IPM
9. 7 There s blockage in the system filth blockage ice plug greasy blockage Y valve hasn t beenopened completely 31 Service Manual 9 2 How to Check Simply the Main Part of Indoor 1 High pressure protection E1 Start A te Are the display panel and main board no Connect the display panel with the main board well connected tightly Malfunction is eliminated no Are the OVC termina on the main board connected Connect the OVC terminal on the main board with Term ell with the high pressure switch on the no the high pressure switch on the complete unit well Malfunction ts eliminated yes complete unit es y lt no Is the wiring of high pressure If the red high pressure Switch is loosened please connect the wires according to the circuit diagram E a hace yes If the high pressure switch is broken or poorly contacted Malfunction is eliminated yes gt please replace it Un ILI E Adjust the volume of refrigerant according to the ian e nimi m Is the refrigerant superabundant yes requirement of the system Malfunction is eliminated yes no 4 no s there poor heat exchange Including filth blockage of hea yes Adjust the unit to improve the heat exchange of unit Malfunction is eliminated yes P
10. GRCC Change for Life Service Manual Model GVH48AH M3DNA5A Refrigerant R410A GREE ELECTRIC APPLIANCES INC OF ZHUHAI Service Manual Table of Contents Part Technical Information sees 1 4 Summary EE 1 2 Specifications EE 2 2 1 Specification Sheet EE 2 2 2 Capacity Curve in Different Outdoor Temperature sss 4 2 3 Cooling and Heating Data Sheet in Rated Frequency nnen ennen verven ennen 4 3 Outline Dimension Diagram ET E ME 5 nn A 5 32 ordi eec 6 4 Refrigerant System Diagram cO 7 5 Electrical Patto ode tton aa 8 9 1 MIMO Misc m 8 52 PCB Printed BISSraiixsascencuiesbe oo 10 6 Function and Control nn 12 6 1 Function Buttons or Air CONC adn 12 6 2 Description of Each Control Operation ennen kreere kr LEE ENE aus 16 6 3 Remote Controller Introduction raices 18 Part ll Installation and Maintenance 22 T Notes for Installation and Maintenance 22 8 Installation e eee e oreet ete ope tent ete Rattan teretes 24 8 1 Installation Dimension Diagram cocinada ti it De nra ies 24 8 2 Installation Parts Checking serveren co Sera c bera DR Fee cen 26 8 3 Selection of Installation Location onincuu ete puero do bna ornat e sns senen ceca unn ENE 26 8 4 Electric Connection E WE EEN 26 Installations Indoor i ERR E a ba 26 8 6 Installation of Qutdoor Daiana dea 28 8 7 Vacuum Pumping and Leak Detection uico oon oi 30 8 8 Check after
11. O O Y AN I HEATS K455 E e as 8 AIR FAN xi 8 E Mese Sg 2 g LL cH i Y IN o FU630 y C632 e CN449 D455 TL L630 8 N CN630 a t A LI ms 12 L FAN L AIR L uw 5 SC con 772 13 188H 2500 XST cay aped o ki e x FAN SH K446 oO x101 R25 SH Ka Koc K444 I z S 5 vum COM n LI oa R27 g ROI Nu di L EA K451 R101 ele X mein cn ow TE Desi peso 190 Jk o ao Y D440 LF E R73 R26 C12 HT 0445 9 2 9 8 Gem Sei Lt R29 por 22223822 n y Ge 1 F y 326 EA N Cl l gt END mio2 Duo b ug 32 HD elo as TT HSH R104 4 cn cl aS 8 58 C163C10 erc D03 TI gt 3 d 352 EB y za pe 3 D17 DUX FF NO mod DIO LC dt us J5 gt R28 ES J36 337 aal 4 Juror RS gt 8e sg EIER id P R30 Dis d 010 SS amp geog SE TJ g D105 CC p CH 06 p20 J38 ge B D104 R105 GR J39 RI3 2 Rios Com sa R32 Es rer 340 RIS E mo er R36 Zoo ia Re e Q101 05 MARK AREA 342 R94 F c102 AF gt LJ B i ry airs U CN12 R110 R33 cs amo caa cuia C42 J43 JE aioe Ou Ing 4H LIES 354 C5 R109 cue Jio 27028 C10 g 3 EI 2 8 Ee J55 a 344 de ees LJ ken 9 e US ts TL nj SILOS ar cT S s ES u2 ose H BZ ES og Ug R57 R58 C60 cs zl 45 346 38 E 5 de copa ag R59 5 F gate CN4 C59 LL moe d d El e B pen gggeesogoscEssS DT ge tt oon z d GER poro gous ES sa ER F Ootje f es EEES E Seo y Oo ue us 2 EEE ei ii n E p JF c25 a 4a MEL d JB6 120300 3 a EST sen G 77 mo Se 072 c71 c57 cse CNIOS UNITE ET CNY 38
12. The circuit on mainboard is damaged please replace the ODU mainboard 18 P8 Module temperature too high protection Main check points a After daubing radiating glue on IPM module fix it with screw if the glue is aging or the fixing screw is loosened please daub the glue again or fix the screw and test again if the malfunction still exist please replace the mainboard 19 PH ODU DC bus bar voltage too high Malfunction description When it is detected the voltage of DC bus bar on electrolytic capacitor is over 400V Main check points a Check if the input voltage is too high that out of normal power supply voltage range Installation and Maintenance oo 41 Service Manual 20 PL ODU DC bus bar voltage too low Malfunction description When it is detected the voltage of DC bus bar on electrolytic capacitor is less than 200V Main check points a Check if the input voltage is too low that out of normal power supply voltage range ODU DC bus bar voltage test point is showed as following picture please measure the voltage of DCLINE P and DCLINE N with multimeter DC grade 9 YE CN TEN T i ao N DCLINE P Si pepe Kb ind CG IC ri mz ERI DEKEN 21 Pc Current detection circuit malfunction current sensor malfunction Malfunction description Check if IU and IV is more than 1 65V 12 5 before powering on the unit Main check points Measure if the IU IV us abnormal when power off the unit if th
13. Twist off the screw used for fixing the outer case pull the cabinet outwardand then remove the cabinet cabinet 7 Remove air guard Remove 4 screws fixing the air guard and then air guard disassemble the air guard 58 o Installation and Maintenance Service Manual Steps Procedure 8 Remove electric box electric box Cut off the tieline pull out the wiring terminal remove all the connecting wires twist off the screws used for fixing the electric box pull it upward and then remove the electric box 9 Remove axial flow blade Twist off the nuts used for fixing the axial flow blade pull the axial flowblade outwardand then remove the blade axial flow blade Installation and Maintenance e 59 Service Manual Procedure 10 Remove motor Twist off the screws used for fixing the motor pull out the motor wire and pull it outward then remove the motor 11 Remove four
14. 5 E6 IDU ODU communication malfunction Main check points a Check if the wiring connection if IDU and ODU is correct b Check if the filter communication power supply voltage is normal if the DC voltage is more than 54 15 please replace the ODU filter c Measure the voltage between D9 U2 C15 U1 and the reference point if the voltage between D9 U2 and reference point is not within 0 5V please replace the IDU mainboard if the voltage between U1 and reference point is not within 0 1 1V while the voltage between C15 and reference point is not within 0 5V please replace ODU mainboard Test point U4 ZC e I Test point D9 Se reference test point 38 eee Installation and Maintenance Service Manual 6 F2 ODU tube temp sensor open short circuit Malfunction description The ODU tube temp sensor temperature value is too high or too low that out of the normal range Main check points a Pull off the ODU tube temp sensor check if the temp sensor resistance value match with present temperature b If the temp sensor resistance is normal please replace ODU mainboard 7 F3 ODU ambient temp sensor open short circuit Malfunction description The ODU ambient temp sensor temperature value is too high or too low that out of the normal range Main check points a Pull off the ODU ambient temp sensor check if the temp sensor resistance value match with present temperature b If the temp sensor resistance is no
15. Blade ever exe 1 16 peercConlerBorSubAe 3004098 o Ww Gud A mes 1 38 puo O mb Det 3e AT 3 jan ma a fwr ouet Panes Dees 3 bewer O T 3 amp 5 TON 3 ies wmuw 1 4 fir itake PaneiAssy OOOO men 5 35 Manet O AE 1 pewcBeCoe omw MET 37 feric Box Cover Sub Assy OW O 1 33 pwmoOme Ooo o wes AT 39 pewcBodey 3exowm ETA 39 emeng o 1 5 Radar 4s META 3 amtme wm 3 Fue Too 4 34 PrwlerHwsmgSubamy me 1 35 kent mT 36 rainage Pipe Subasey Om3MM 1 Ca wm 38 Fan Motor o is9wesg 39 pss O 224 4 peawde O Heg 1 4 peepee 3emdmoi 3 a kee OO o o o 3 4 amp penre O o 1 44 Connecting ome OOOO o mamme 1 4s Connecting Cable OO men ATA Above data is subject to change without notice lc co 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 mnmi 2 2 j2 2 2l 46 O Installation and Maintenance Service Manual 10 2 Outdoor Unit
16. During switching the two swing settings Sl icon will blink for 2s 19 Technical Information o Service Manual 6 A button Press this button can select left amp right swing Swing angle can be selected circularly in sequence as below gt E C AA WI gt gt no display m A A A horizontal louvers RAN Ca TS stops at current position Swing angle is displayed dynamically When selecting MA with remote controller it s auto swing Horizontal louver of air conditioner will swing left amp right automatically at the maximum angle When selecting me with remote controller it s the fixed position swing Horizontal louver of air conditioner will stop at E that position as shown by the icon to swing When selecting Tom its the circulating swing Horizontal louver of air conditioner will swing circularly according to the angle as shown by the ion KE Under unit off status press button and FX button simultaneously to switch between simple swing setting and fixed angle swing setting During switching the two swing settings FX icon will blink for 2s 7 HEALTH SAVE button HEALTH FUNCTION After pressing HEALTH button remote controller will switch circularly as below HEALTH gt AIR gt AIR HEALTH gt no display When selecting HEALTH by remote controller HEALTH function will be started up When selecting AIR by remote controller AIR function
17. Module Reset 25 Driver Module Communication Fail Charging Circuit Malfunction 1 E1 High pressure protection Malfunction description The pressure of ODU high pressure side is too high Main check points a Is the system pressure is normal b Is the pressure switch is normal c If above two issues are normal the mainboard circuit is with malfunction please replace mainboard 2 E2 Freeze protection Malfunction description Too low tube temperature of IDU under cooling mode Main check point a Check if the IDU fan speed is normal if the air inlet outlet is smooth b Check if the IDU ODU heat exchanger is too dirty that affect the heat exchanging effect Installation and Maintenance oo 37 Service Manual 3 E3 Low pressure protection Malfunction description The pressure of ODU low pressure side is too low Main check points a Is the system pressure is normal b Is the pressure switch is normal c If above two issues are normal the mainboard circuit is with malfunction please replace mainboard Pressure switch terminal of low Pressure 4 E4 The air discharging temperature is too high Main check points a Pull off the ODU air discharging temp sensor check if the temp sensor resistance value match with present temperature b Check if the refrigerant is too much or too little c Check if the IDU ODU heat exchanger is too dirty that affect the heat exchanging effect
18. R208 Ed ECN6 cnz g BRG 88 bie Cal ZZ GRIS35 Al V1 3 2014 03 11 spay Bott i 2 3 T e Dottom view 1 HI H UOLTRG no 10 Name Wiring terminal of display board Needle stand of temperature sensor Connect to GRJ306 2A2CN411 on PCB board Needle stand of left amp right swing Needle stand of up amp down swing Fan speed control terminal of drive board of DC fan Terminal of live wire for drive board of DC fan Terminal of live wire Terminal of neutral wire Input terminal of transformer Communication terminal Technical Information Service Manual e Outdoor Unit e Top view 18 17 16 15 14 13 12 11 10
19. and valve support and then remove the gas and liquid vales Twist off the screws used for fixing the unsolder the spot weld between electric expansion valve notice before soldering the refrigerant should be released completely pull it outward and then remove the electric expansion valve Installation and Maintenance e gas and liquid seperator compressor electric expansion valve gas valve e valve support liquid valve 61 Service Manual 16 Remove clapboard Remove 5 screws connecting clapboard end plate of condenser and chassis and then remove clapboard clapboard 17 Remove left side plate JOO Twist off the screws connecting the left side plate and chassis withscrewdriver and then remove the left side plate left side plate 18 Remove condenser Remove 2 screws fixing end plates of condenser and chassis and lift the condenser upwards to remove it condenser 62 e Installation and Maintenance Service Manual Appendix Appendix 1 Reference Sheet of Celsius and Fahrenheit Conversion formula for Fahrenheit degree and Celsius degree Tf Tcx1 8 32 Set tempe
20. in Dry mode press ON OFF button that can turn on the unit directly e b When the unit start up running the status light will display in red indicated as power turn on and free duty ee Mode Button Press the button the circulating changes of mode are shown as below o DE Heating Air Supply __ Auto the controller will determine its operation mode according to changes of room temperatures under this mode Cooling display cooling state Dehumidification reduce temperature and keep the setting room temperature without any change Air supply The compressor doesn t on work and only the indoor blower is on running under this mode Heating Display the state of heating Note Single cooling machine is not equipped with heating mode CC eS E Function v A AMB Mode ON OFF Aand Vv A andY Button Under the situation without setting the function press A and Wbuttons the setting temperature goes up and down 1 C the regulating range is from 16 C to 30 C e Under the conditions of setting the functions can proceed with the round trip option of this function set A and Y opposite direction of circulation e Keep pressing A and Y buttons for 3 seconds continuously functions of all buttons on the display panel will be conductively closed and then press any button the buzzer will ring once while LC is flashing for three times on the location of double 8 and resume to normal dis
21. way valve and air intake pipe four way valve Release the refrigerant completely unsolder the air intake pipe of compressor outlet pipe of condenser connecting pipe of gas valve and gas and liquid separator then pull the four way valve and air intake pipe CITI TAE A UO OOD OD OUD Y 12 Remove Discharge Tube Discharge Tube Discharge the refrigerant completely unsolder the pipelines connecting the compressor and the condenser assy and then remove the discharge tube NOTE Before unsoldering please discharge the refrigerant completely When unsoldering the soldering joint wrap the gas valve with wet cloth completely to avoid damage to the valve caused by high temperature 60 e Installation and Maintenance Service Manual 13 Remove gas and liquid separator Loosen the two screws used for fixing the gas and liquid separator pull it upward and then remove the gas and liquid separator 14 Remove compressor Twist off the nuts used for fixing the compressor withwrench pull the compressor upward to remove it 15 Remove valve support g electric expansion valveg gas valve and liquid valve Unsolder the spot weld connecting capillary and connecting pipe of liquid valve remove 2 bolts fixing the valve support with wrench Remove 4 bolts connecting gas and liquid valves
22. will be started up When selecting AIT HEALTH AIR and HEALTH function will be started up When there s no display on remote controller AIR and HEALTH function will be turned off SAVE function Under cool mode press SAVE button and the unit will operate under SAVE mode Dual 8 nixie tube on remote controller displays SE Air conditioner will operate at auto speed Set temperature can t be adjusted Press SAVE button again to exit SAVE mode Air conditioner turn back to original set speed and set temperature 8 X FAN button After pressing this button under cooling or dry mode remote controller displays the character of X FAN and X FAN function is started up Press this button again to cancel X FAN function The character of X FAN will disappear Note After starting up X FAN function when turning off the unit indoor fan will continue to operate for a while at low speed to dry the residual water inside the indoor unit When the unit operates under X FAN mode press X FAN button can turn off X FAN function Indoor fan stops operation immediately 9 TEMP button Press this button can see indoor set temperature indoor ambient temperature or outdoor ambient temperature on indoor unit s display Temperature is set circularly by remote controller as below FABRE When selecting 7 by remote controller or no display temperature indicator on indoor unit displays set temperature When selecting 3 by r
23. 000W 16000W 10 expansion screws are needed e 0 Installation and Maintenance Service Manual Fig 17 at least 3cm above the floor Step two install drain joint only for cooling and heating unit 1 Connect the outdoor drain joint into the hole on the chassis as shown in the picture below 2 Connect the drain hose into the drain vent As show in Fig 18 o DCE LI C6 ee Q drain Bee chassis outdoor drain joint Fig 18 Step three fix outdoor unit 1 Place the outdoor unit on the support 2 Fix the foot holes of outdoor unit with bolts As show in Fig 19 M drain hose foot holes handle foot holes front side plate Fig 19 Fig 20 Step four connect indoor and outdoor pipes 1 Remove the front side plate As show in Fig 20 2 Remove the screw cap of valve and aim the pipe joint at the bellmouth of pipe As show in Fig 21 S pipe E fl gas valve CA LV ES union nut i Fig 21 liquid pipe liquid valve 3 Pretightening the union nut with hand 4 Tig
24. 1 2 O BN BN CH AC L X631 gt lt 3 A YEGN E AP3 FILTERBOARD CN16 CN4 CN3 XT1 Z PE1 NOUTLOUT Y Y Y PED v nM Mo M3 INDOOR UNIT YEGN d LI LI BE DCFANMOTORCJPE yp DowN LEFT RIGHT STEPPING MOTOR STEPPING MOTOR Technical Information Service Manual e Outdoor Unit F BK RT1_ 50K d EXHAUST TERMINAL BLOCK ia d TEMP SENSOR BN TC BN AAA BN 12 RT2 15K L1 mm Ui AC L1 1 L1 OUT X5 gt gt BN L1 TSENSOR2 gt gt d OUTROOM BK sk tt gk 2 TEMP SENSOR L2 m L2 AC L2 X2 L2 OUT X6 gt lt lt 12 WH RT3_ 20K In VT vr 1 vt L la OUTTUBE L3 me L3 7 ACL3X3 L3 OUT XT gt gt 1318 TEMP SENSOR BU BU AAR SC N mm N N X4 N OUT X8 gt gt PU n lt lt N X1 l WH o YEGN xui COM BHH AP1 evil 1 gt ISP POWER FILTER BOARD L REACTOR PE E X9 Y Y SS BU BN BK YEGN WH 16 gt 4 pl x Ope OVERLOAD PROTECTOR ME Z BU na per A A OVC COMP b SAT ga Ha CAT Lan SNNT LPP I O La 3 BN L U COMP YEGN U COMP U gt L L3 a 45 AP2 BK 3 V COM Nn d YEGN V COMP V gt gt 551 VOME TERMINAL BLOCK MAIN BOARD vr L ERI i W COMP W 555 bog OPE gt lt E DC MOTOR2 4V1 FA HEAT HPP Y yo p ES Y D PE RD RD
25. 4 15 6 17 18 MA 20 NC E 22 2 o2 25 26 27 28 a 30 ar 32 39 34 as 36 37 38 28 E 4 E ECC as 46 48 e c Installation and Maintenance Service Manual 11 Removal Procedure N Caution discharge the refrigerant completely before removal 11 1 Removal Procedure of Indoor Unit 1 Remove air inlet panel Remove the screw stopper remove the screws fixing air inlet panel and pull the upper part of air inlet panel outwards air inlet panel 2 Remove air outlet panel Remove the screws fixing the top and lower part of air outlet panel push the air outlet panel upwards slightly and then remove the air outlet panel 49 Installation and Maintenance Service Manual 3 Remove display board horizontal swing motor and vertical swing motor Remove the screws fixing controller box EL E display board remove the controller box cover to get 2 remove the display board remove the TT i screw fixing motor in the air outlet panel sub assy remove the horizontal swing motor and vertical swing motor l step motors eh NIE 4 Remove air guard Remove the screw fixi
26. 4 2 998 0 873 11 87 35 28 13 16 2 896 0 848 to 875 29 126 68 277 10 085 e 270 10 082 74 35 31 11 57 7 70 5 2 11 09 El 5 60 23 3 57 18 2 1 2 611 109 0 779 0 1 2 523 110 0 758 2 72 2439 73 238 t2 an 35 9 779 4 2 28 0 697 36 9 382 5 2 206 0 678 76 243 us ue 7 200 ne 062 3 3 3 3 78 1 997 0 625 9 1 933 0 608 49 02 46 6 H El 4i zes so tem no osa 42 732 a 18u Es El Ej 39 8 297 40 7 967 38 15 44 6 791 3 1 699 122 0 547 125 0 505 126 0 492 129 0 456 130 0 444 133 0 412 134 0 401 1 645 4 7 34 58 32 94 31 38 10 1 27 18 25 92 14 24 73 15 1 594 47 6 038 48 5 809 45 i 1 544 51 5 197 52 4 986 1 322 2 es 124 22 53 55 4 456 94 1 207 21 51 56 4 294 5 1 171 18 e 1436 19 es es er e 1451 89 1408 90 1363 ez EI El 7 7 7 7 7 7 7 7 8 40 09 43 7 065 82 1 754 121 0 561 8 8 85 87 1 497 88 9 9 93 9 E D E ES 36032 45 659 IN B D Installation and Maintenance o oO 65 Service Manual Resistance Table of Tube Temperature Sensors for Indoor and Outdoor 20K eet Resstnce kG User Resistance remco esstancek emt Dm ome pp oum aj se as ama m z o 39 HEE HCN 162 1 22 22 8
27. 5 4 773 1 346 62 4 605 1 307 4 289 4 14 1 198 3 998 1 164 6s 64 o5 e 3861 CNN m TO ono NEN E 153 3 23 21 85 ws 2 29 e pe sp p A E 123 27 18 13 EE 40 ma 29 168 9 104 6 30 16 1 9s an 1543 Se RES 8917 33 m 84 61 34 13 59 73 80 31 35 13 04 74 76 24 BRECH ve 75 7241 68 79 65 37 56 19 53 46 46 11 8 37 BEER Ls ose 38 01 7 173 36 24 6 905 31 47 6 167 30 04 5 942 a Lan sm oso e lt Installation and Maintenance Service Manual Resistance Table of Discharge Temperature Sensor for Outdoor 50K Temp C Resistance k0 Temp C Resistance kQ _ Temp C Resistance k0 29 835 10 98 a 183 8 7998 n 934 so 1765 27 12 8907 51 6 7038 13 8495 25 6608 14 8105 53 6208 15 735 54 5806 16 738 548 9 70 5 Installation and Maintenance o oO 67 JF00302342 GREE GREE ELECTRIC APPLIANCES INC OF ZHUHAI Add West Jinji Rd Qianshan Zhuhai Guangdong China 519070 Tel 86 756 8522218 Fax 86 756 8669426 Email gree gree com cn Hittp www gree com HONG KONG GREE ELECTRIC APPLIANCES SALES LIMITED Add Unit 2612 26 F Miramar Tower 132 Nathan Road TST Kowloon HK Tel 852 31658898 Fax 852 31651029 For product improvement specifications and appearance in this manual are s
28. Installation and Test Operation sess 30 o 9 Table of Contents Service Manual 9 Maintenance A 31 9 1 Judgement by Flashing LED of Indoor union anita 31 9 2 How to Check Simply the Main Part of Indoor iii 32 9 3 Judgement by Flashing LED of Outdoor 37 9 3 Maintenance Method for Normal Malfunchon A 43 10 Exploded View and Parts List ooo 45 A e PECUNIIS EUR 45 102 Outdoor A A AE 47 11 Removal Procedure me 49 11 1 Removal Procedure of Indoor Unit asia 49 11 2 Removal Procedure of Outdoor E 56 Appendix nn 63 Appendix 1 Reference Sheet of Celsius and Fahrenheit AE 63 Appendix 2 Configuration of Connection PIPE unn duda tar rr rau pina wassen 63 Appendix 3 Pipe Expanding Method socios ii 64 Appendix 4 List of Resistance for Temperature Sensor sss 65 Table of Contents 5 o Service Manual ion Technical Informat Part I 1 Summary Indoor Unit GVHA48AH M3DNAS5A I Outdoor Unit GVH48AH M3DNA5A O Remote Controller YB1F2 XFAN Technical Information Service Manual 2 Specifications 2 1 Specification Sheet GVH48AH M3DNASA Product Code CH090000500 Rated Voltage 380 415 Suppy fRatedFrequency mk Supply Rated Frequency 50 60 Phases IN HA 65 y 1850 1800 1700 1530 55 85 Power c Mode Cooling Capacity Heating Capacity Cooling Power Input Heating Power Input Cooling Power Current H
29. YE WE A WARNING al due Please don t touch any M rp electronic component or m H HPS LP terminal when the machine NOTE M1 EHH is running stopping or Motor ground m A K T has been powered off for only applies I d ELECTRONIC less than 30 minutes to tothe iron Tj FANMOTOR 4 way EXPANSION COMPRESSOR HIGH PRESSURE prevent electric shock shell motor pp VALVE VALVE BAND HEATER PROTECTION SWITCH J These wiring diagrams are subject to change without notice please refer to the one supplied with the unit Technical Information ee Service Manual 5 2 PCB Printed Diagram e Indoor Unit e Top view hj 9 8 7
30. ature protection of compressor E4 Check the system yes eliminate the blockage Abnormal system blockage no Check wiring and yes fan capacitor replace motor Motor speed of outdoor unit is abnoral under cooling mode Problem is solved no no Check the unit to let the air come in and come out smoothly Abnormal air in for outdoor unit under cooling mode no no Normal syste but resistance value of discharge temperature sensor for compressor is abnormal Problem is solved Replace tempera ture sensor no lt 4 v Replace control panel End Installation and Maintenance o e 5 Overcurrent protection E5 Start yes Is the supply voltage unstable with big fluctuation no Normal fluctuation is within 10 of the rated voltage on the nameplate no Service Manual yes Malfunction is eliminated es Is the supply voltage too low with overload y no Adjust the supply voltage to maintain it within normal range no yes Malfunction is eliminated yes the indoor outdoor heat exchanger too dii or are the air inlet and outlet blocked Clean the indoor and outdoor heat exchangers and remove the blockage of air inlet and outlet no
31. bient tep Pd Up amp down swing Introduction for Buttons on Remote Controller Note After putting through the power the air conditioner will give out a sound Operation indictor b is ON red indicator After that you can operate the air conditioner by using remote controller e At ON status after each pressing button on remote controller the signal con es on remote controller will flash once Air conditioner will give out a sound which indicates the signal has been sent to air conditioner At OFF status display screen on remote controller displays set temperature At on status display screen on remote controller displays the corresponding startup function s icon o 9 Technical Information Service Manual 1 ON OFF Button Press this button can turn on or turn off the air conditioner After turning on the unit operation indicator b on indoor unit is ON green indicator Color may be different for different models and indoor unit gives out a sound 2 MODE Button Press this button to select your required operation mode AUTO COOL DRY FAN HEAT C S B e gt X After selecting auto mode air conditioner will operate automatically according to ambient temperature Set temperature can t be adjusted and also can t be displayed Press FAN button can adjust fan speed Press 31 button and button can adjust swing angle e After selecting cool mode air conditioner operat
32. c s Is the voltage of power supply according to the lt may cause malfunction or voltage marked on the damage the parts nameplate Is electric wiring and pipeline installed correctly Is the unit grounded securely Does the power cord It may cause malfunction or follow the specification damage the parts Is there any obstruction It may cause insufficient cooling in air inlet and air outlet heating The dust and sundries caused It may cause malfunction or during installation are damaging the parts removed The gas valve and liquid valve of connection pipe are open completely Use vacuum pump 1 Remove the valve caps on the liquid valve and gas valve and the nut of refrigerant charging vent 2 Connect the charging hose of piezometer to the refrigerant It may cause malfunction or damage the parts charging vent of gas valve and then connect the other charging hose to the vacuum pump 3 Open the piezometer completely and operate for 10 15min It may cause electric leakage to check if the pressure of piezometer remains in 0 1MPa 4 Close the vacuum pump and maintain this status for 1 2min to check if the pressure of piezometer remains in 0 1MPa If the pressure decreases there may be leakage 5 Remove the piezometer open the valve core of liquid valve and gas valve completely with inner hexagon spanner e 6 Tighten the screw caps of valves and refrigerant charging vent As show in Fig 28 It may cau
33. cording to the color tighten the screw and then fix the power connection wire with wire clip As show in Fig 12 Outdoor unit connection 27 wiring board earthing wire Note the wiring connection is for reference only please refer to the actual one 4 Adjust the position of upper and lower adjusting baffle clamp the connection pipe and drain pipe as firm as possible 5 Tighten the screws A Note All wires of indoor unit and outdoor unit should be connected by a professional 1 If the length of power connection wire is insufficient please contact the supplier for a new one Avoid extending the wire by yourself 2 For the air conditioner with plug the plug should be reachable after finishing installation 3 For the air conditioner without plug an air switch must be installed in the line The air switch should be all pole parting and the contact parting distance should be more than 3mm Step seven bind up pipe 1 Bind up the connection pipe power cord and drain hose with the band As show in Fig 14 2 Reserve a certain length of drain hose and power cord for installation when binding them When binding to a certain degree separate the indoor power and then separate the drain hose As show in Fig 15 3 Bind them evenly 4 The liquid pipe and gas pipe should be bound separately at the end indoor and outdoor power cord N indoor
34. current heating timing air renewal setting and room temperature can be shifted in sequence When a certain character is flashing it in dicates can proceed its setting and go on setting by press buttons The action will be confirmed if without receiving other operating order in 5 seconds Or press the function button to leave for the confirm Press the function button under the status of running drying service can directly proceed shutdown Press the function button under the status of shutdown and non drying can proceed timing setting Service Manual ee Technical Information Service Manual d WM s E RUN TIMER BLOW SWING COOL HEAT AUTO TEMP E l C 8 m C se hd SLEEP AIR E HEATERSHING zem AUTO L M H mem SAVE ROOM OFFICE C Speed Function v A AMB Mode ON OFF Je e dsip pue uonoun suoyng Setting e Display setting temperature Room temperature e Indicate temperature of indoor circumstances Supper strong When the typeface light is on it indicates setting the super strong SE function Mode of save lu e Indicate mode of save ROON Mode of room e Indicate mode of room OFFICE Office mode e Indicate mode of office Mode of restaurant e Indicate mode of restaurant Common mode e Indicate common mode Status of swing e Display status of swing Status of swing
35. e Manual 2 Freeze protection E2 Start Clean the filter check whether there s enough space at the top of indoor unit Is the problem solved Poor air return in indoor unit no no Check whether jumper yes gt cap and motor is normal Is the problem solved The fan speed is abnormal no Is the problem solved Evaporator is dirty es Clean the evaporator no System is normal but resistance value of indoor tube temperature sensor is abnormal es Replace temperature Is the problem sensor solved no 1 no Replace control panel Installation and Maintenance o eo Service Manual 3 Low pressure protection of compressor E3 E3 is displayed on the unit Re insert it tightly to ensure reliable contact Is the No malfunction iminated Yes i System pressure higher than the acting alue of the low pressure switch Yes Add refrigerant Is the malfunction Yes Lei liminated 1 Test when denergized Replace the low pressure switch Yes Is the No malfunction Yes i veniet Yes The controller is defined abnormal replace it Yes End v 34 e 9 Installation and Maintenance Service Manual 4 High discharge temper
36. e voltage value is not around 1 65V please replace the mainboard L 22 PO IPM module reset Malfunction description DSP chip reset and initialize Main check points Check if the wiring distribution in electric box is regular tidy the wire and test again if the problem still exist please replace the mainboard 23 Ld Lack phase Malfunction description Compressor current is detected less than a certain value during operation Main check points Check if the CPU mainboard is loosened or incorrect inserted Well insert and test again if the problem still exist please replace the mainboard 24 PU Charging circuit malfunction Malfunction description The DC bus bar voltage is less than 100V during charging Main check points Check if the circuit wiring connection is loosened or correct as wiring diagram well connect the wire if the malfunction still exist please replace the mainboard oo Installation and Maintenance Service Manual 9 3 Maintenance Method for Normal Malfunction 1 Air Conditioner Can t be Started Up Possible Causes Discriminating Method Air conditioner Status Troubleshooting Confirm whether it s due to power failure If yes No power supply or poonAfter energization operation indicator isn t bright wait for power recovery If not check power connection for power plug and the buzzer can t give out sound supply circuit and make sure the power plug is connected well Wrong wire connection bet
37. eating Power Current Rated Input Rated Current Air Flow Volume SH H M L SL Volume SEER SCOP Application Area Model of indoor unit Indoor Unit Aluminum Fin copper Tube 07 94 472X62X836 MP35AK MP35AB Output of Swing Motor DEER os 20 A AAA MT eo 9 Technical Information Service Manual Model of Outdoor Unit EM GVH48AH M3DNA5A O Outdoor Unit Product Code CHO90W00500 Compressor Manufacturer Trademark MITSUBISHI ELECTRIC p GUANGZHOU COMPRESSOR CO LTD Compressor Modelo OOOO SUS compressor Ol RS compressor ee rt Overload Protector E Throtting Method o ron expansion valve Condenser Fom CA incon Tube Fame to Defosting mera mate Desing Cmaene O O A oo LN Moisture Prowcion OA Permissible Excessive Operating Pressure 43 or the Discharge Side i Permissible Excessive Operating Pressure 25 or the Suction Side Refigerant RA Outer Diameter Gas Pipe 016 Max Distance Height 10 Max Distance Length 25 Connection Pipe Note The connection pipe applies metric diameter The above data is subject to change without notice please refer to the nameplate of the unit Technical Information o 0 Service Manual 2 2 Capacity Curve in Different Outdoor Temperature Cooling Heating 120 120 140 110 A A E E D E E E 100 100 O q
38. emote controller temperature indicator on indoor unit displays indoor ambient temperature When selecting by remote controller temperature indicator on indoor unit displays outdoor ambient temperature Note e Outdoor ambient temperature display may can t be selected for some models When indoor unit receives signal it displays indoor set temperature Only for the model whose indoor unit has dual 8 display 10 TIMER button e At ON status press this button once can set TIMER OFF The character of HOUR and OFF will flash Press or button within 5s can adjust the time of TIMER ON After each pressing of or button time will increase or decrease half an hour When holding or button 2s later the time will change quickly until to reach to your required time After that press TIMER button to confirm it The character of HOUR and OFF won t flash again Cancel TIMER OFF Press TIMER button again under TIMER OFF status 20 ee Technical Information Service Manual e At OFF status press this button once can set TIMER ON Please refer to TIMER off for detailed operation Cancel TIMER ON Press TIMER button again under TIMER ON status Note Time setting range 0 5 24 hours Time interval between two operations can t exceed 5s Otherwise remote controller will exit the setting status automatically 11 TURBO button When pressing this button under cooling or heat
39. ence office The setting temperature speed blowing up and down as well as left and right can be adjustable If users change the setting temperature speed blowing up and down as well as left and right the operation will run in accordance with the status of setting adjustment The services setting of blowing up and down as well as left and right of next time start up will be remained before last shutdown while the setting temperature and speed will run with the default Under the energy saving mode while the heating service is on running the setting temperature speed blowing up and down as well as left and right can be adjustable If users change the setting speed blowing up and down as well as left and right it will run according the status of users setting adjustment But the setting temperature under the energy saving cooling function can not be adjusted AMB AMB Buttons Continued e The modes of living room restaurant conference office can only be called out by pressing buttons of air con ditioner panel If receiving the sig nal from remote control when the air conditioner is running the modes of living room restaurant confere nce office it will exit from the abo vementioned modes and run acc ording to the modes of remote control FUROR Function Button Under the status of switch on Every time press the function button the settings of up and down left and right drying con
40. enter the status of normal standby The 1 and 2 Functions are for trial use only Technical Information o e Speed Function v A h xe A COOL HEAT AUTO DRY C s x aks afl H Turso SAVE ROOM OFFICE C Speed Button Press this button the speed can shift in the circulation among of Auto Low Medium High Super Auto Note the function of forced low speed under operation of dehumi dification is not available AMB AMB Button e Press this button AMB circulating changes set forth below Energy saving Living Room uud Normal e Restaurant Conference Office e Adjustable method of AMB Button The switch on of AMB mode at first time is the default of normal mode when shutting down and starting up again the AMB mod will keep the setting status before last shutting down Under the modes of energy saving conference office and restaurant the sleep function will be automatically cancelled And the sleep function is not adjustable sleep function is only available on service for cooling dehumidification and heating under normal mode 13 Jekejdsip pue uogoun suoyng AN ORE 3 a s TIMER BLOW SWING TEMP EA x TEN SLEEP AIR E HEATER SWING SPEED AUTO L H ueo SAVE ROOM x O COOL HEAT AUTO C se h A OFFICE Speed AMB Function v A AMB Buttons Continued e Under the modes of living room restaurant confer
41. es under cool mode Cool indicator 3 amp on indoor unit is ON You can press or button to adjust set temperature Press FAN button can adjust fan speed Press 31 button and button can adjust swing angle e After selecting dry mode air conditioner operates under dry mode at low speed Dry indicator d on indoor unit is ON Under dry mode fan speed can t be adjusted Press 31 button and S button to adjust swing angle After selecting fan mode air conditioner operates only under fan mode All mode indicators on indoor unit is OFF Press FAN button can adjust fan speed Press 31 button and button to adjust swing angle e After selecting heat mode air conditioner operates under heat mode Heat indicator on indoor unit is ON You can press or button to adjust set temperature Press FAN button to adjust fan speed Press 31 button and button to adjust swing angle Cooling only unit can t receive the signal for heating mode Note For preventing cold wind after starting up heating mode indoor fan will blow fan after delaying 1 5min Details time is decided by indoor ambient temperature Temperature setting range on remote controller 16 C 30 C Fan speed setting range auto low speed medium speed and high speed 3 or button e After each pressing of or button it can increase or decrease set temperature 1 C Hold or button 2s
42. g Method Air conditioner Status Troubleshooting Connect wires according to wiring diagram to make sure all wiring terminals are connected irmly Refrigerant is leaking Wrong wire connection or poor Check the wiring status according to circuit connection diagram tepping motor is damaged Stepping motor can t operate Repair or replace stepping motor Others are all normal while horizontal louver Replace the main board with the same model can t operate Installation and Maintenance o e 43 44 Service Manual 4 ODU Fan Motor Can t Operate Discriminating method air conditioner status Troubleshooting Connect wires according to wiring diagram to make sure all wiring terminals are connected rong wire connection or poor Check the wiring status according to circuit Change compressor oil and refrigerant If no better replace the compressor with a new one Connect wires according to wiring diagram to rong wire connection or poor Check the wiring status according to circuit M make sure all wiring terminals are connected connection diagram Measure the capacity of fan capacitor with an Capacity of compressor is universal meter and find that the capacity is out of damaged he deviation range indicated on the nameplate of Spaen the Compressor capacitor Power voltage is a little low or Use universal meter to measure the power Supp A high oltage The voltage is a little high or low 99 quip ge reg Use uni
43. g bolt must be installed make sure the installation support is firm 4 Ware safety belt if the height of working is above 2m 5 Use equipped components or appointed components dur ing installation 6 Make sure no foreign objects are left in the unit after fin ishing installation Refrigerant Safety Precautions 1 Avoid contact between refrigerant and fire as it generates poisonous gas Prohibit prolong the connection pipe by welding 2 Apply specified refrigerant only Never have it mixed with any other refrigerant Never have air remain in the refrigerant line as it may lead to rupture or other hazards 3 Make sure no refrigerant gas is leaking out when installation is completed 4 If there is refrigerant leakage please take sufficient measure to minimize the density of refrigerant 5 Never touch the refrigerant piping or compressor without wearing glove to avoid scald or frostbite Improper installation may lead to fire hazard explosion electric shock or injury e 9 Installation and Maintenance Service Manual Main Tools for Installation and Maintenance 1 Measuring tape 2 Screw driver 4 Electroprobe 5 Universal meter D T Electronic leakage detector 8 Vacuum pump 10 Pipe pliers pipe cutter 11 Pipe expander pipe bender Installation and Maintenance oo 0o 9 3 Impact drill drill head electric drill 6 Torque wrench open end wrench inner hexagon spanner 9 Pressure meter
44. g sheet Place the open end wrench on the pipe joint and place the torque wrench on the union nut Tighten the union nut with torque wrench As show in Fig 6 5 Wrap the indoor pipe and joint of connection pipe with insulating pipe and then wrap it with tape As show in Fig 7 screw gt TE pipe joint union nut Pipe air a a Pee ll RTS i Fig 4 Fig 5 open end wrench union nut EE Ves M h d pipe orque j x E indoor pipe 7 insulating pipe Fig 6 Fig 7 Installation and Maintenance o e Refer to the following table for wrench moment of force Hex nut diameter mm Tightening torque N m SCHER 9 52 3 8 12 1 2 Step five install drain hose 1 Connect the drain hose to the outlet pipe of indoor unit As show in Fig 8 2 Bind the joint with tape As show in Fig 8 3 Add insulating pipe in the indoor drain hose in order to prevent condensation As show in Fig 10 Drain hose Outlet pipe 3 e i Oo WT EF hose Tape Outlet pipe Fig 9 Fig 8 p Drain hose es CN II SEM Insulating pipe Fig 10 Step six connect wire of indoor unit 1 Make the power connection wire go through the cable cross hole of indoor unit As show in Fig 11 power MU connection cable cross wire hole Fig 11 2 Remove the wire clip connect the power connection wire to the wiring terminal ac
45. g to the local safety regulations use qualified power supply circuit and air switch 3 The air switch must have the functions of magnetic tripping and heat tripping in order to prevent short circuit or overload Please install the air switch with suitable capacity according to the sheet below Capacity of air switch 48K 16A 4 Make sure the power supply matches with the requirement of air conditioner Unstable power supply or incorrect wiring may result in electric shock fire hazard or malfunction Please install proper power supply cables before using the air conditioner 5 Properly connect the live wire neutral wire and grounding wire of power socket 6 Be sure to cut off the power supply before proceeding any work related to electric safety 7 Do not put through the power before finishing installation AN Grounding Requirement 1 The air conditioner is first class electric appliance It must be properly grounded with specialized grounding device by a professional Please make sure it is always grounded effectively otherwise it may cause electric shock 2 The yellow green wire in air conditioner is grounding wire which can t be used for other purposes 3 The grounding resistance should comply with national electric safety regulations 8 5 Installation of Indoor Unit Step one Choosing Installation location Recommend the installation location to the client and then confirm it with the client Step two ope
46. gh Right amp left swing button This button is used for control the on off of right amp left swing motor After each pressing this button the on off status of the right amp left swing motor will be changed for once Technical Information oe 17 Service Manual 18 6 3 Remote Controller Introduction Buttons on Remote Controller ON OFF Button TFAN AUTO F e all OPER AIR HEALTH X FAN amp D e ssl AR i TURBO MODE Button Button FAN Button N Zl Button w Button Ml e E oo O6 0 6 HEALTH SAVE Button X FAN Button Q 3 e Note X FAN is the same with BLOW FAN A 6 7 TEMP Button d D fp 9 TIMER Button X FA TEMP TIME e SLEEP us TURBO Button D SLEEP Button LIGHT Button Introduction for Icons on Display Screen a ennn Set fan speed Air Mode eene FAN AUTO SA Send signal E al OPER Gn A AIR HEALTH X FAN e mode Auto mode p d wor mE P fan Cool mode feses d Dry mode l je idi NI UN e o Set temperature Fan mode ETA Li TURBO mm es O Turbo mode Heat mode E aart HOUR Le TIMER ON TIMER OFF Eege d moje Ce Set time Child lock 4 S55 en hed Light Sleep mode Os cas B Z en Left amp right swing i fa Set temp a indoor ambient temp x L LH Outdoor am
47. hten the union nut with torque wrench by referring to the sheet below Hex nut diameter mm Tightening torque N m 06 1 4 15 20 09 52 3 8 30 40 12 1 2 016 5 8 P19 3 4 70 75 Installation and Maintenance o eo Step five connect outdoor electric wire 1 Remove the wire clip connect the power connection wire to the wiring terminal according to the color fix them with screws As show in Fig 22 yellow green blue black brown yellow green POWER Indoor unit connection Note the wiring connection is for reference only please refer to the actual one 2 Fix the power connection wire with wire clip Note 1 After tightening the screw pull the power cord slightly to check if it is firm 2 Never cut the power connection wire to prolong or shorten the distance Step six neaten the pipes 1 The pipes should be placed along the wall bent reasonably and hidden possibly Min semidiameter of bending the pipe is 10cm 2 If the outdoor unit is higher than the wall hole you must set a U shaped curve in the pipe before pipe goes into the room in order to prevent rain from getting into the room As show in Fig 24
48. ing mode air conditioner will enter into quick cooling or quick heating mode The character of TURBO is displayed on remote controller Press this button again to exit turbo function and the character of TURBO will be disappeared on remote controller 12 SLEEP button Press this button under cooling heating or drying mode can start up sleep function C icon will be displayed on remote controller Press this button again to cancel sleep function icon on remote controller will be displayed 13 LIGHT button Press this button can turn off the light for indoor unit s display 25 icon on remote controller will disappear Press this button again to turn on the light for indoor unit s display X icon on remote controller will be displayed Function Introduction for Combination Buttons Child lock function Press and buttons simultaneously can turn on or turn off child lock function When child lock function is started up icon will be displayed on remote controller If operate remote controller amp icon will flash three times while remote controller won t send signal Switchover function for temperature display After turning off the unit by remote controller press button and MODE button simultaneously to switch between C and F Operation Guide 1 After putting through the power press ON OFF button on remote controller to turn on the air conditioner 2 Press MODE button to select your
49. inished the unit will start heating normally During the time of defrosting dual 8 will display H1 3 2 Swing Function Users can start up or stop the function of up amp down swing right amp left swing o 9 Technical Information Service Manual 3 3 Sleep QD If the controller is in cooling or dry mode after the sleep function is started Tpreset will be increased but it won t increase over 3 C Then the unit will run at the increased temperature 2 If the controller is in heating mode after the sleep function is started Tpreset will be decreased and it won t decrease over 3 C Then the unit will run at the decreased temperature 3 4 Timer Timer ON and timer OFF can be set by remote controller or buttons and the setting range is 0 5 24hrs 3 5 Buzzer Upon energization and operation the buzzer will give out a beef 3 6 Power off Memory Function Memory content mode up amp dwon swing 7 statuses right amp left swing ON OFF setting temperature setting fan speed health light timer After power failure the unit will run according to the memory content automatically when power recovered If energize the unit after power failure and the unit is turned on before power failure the compressor will be delayed for 3mins for protection if the unit is turned off before power failure the compressor won t be delayed for 3mins for protection If the timer is reached before power failure the unit will run according to the mode before
50. later set temperature on remote controller will change quickly After reaching to your required time loosen the button Temperature indicator on indoor unit will also change accordingly Temperature can t be adjusted under auto mode e Under TIMER ON TIMER OFF or Clock setting you can press or button to adjust time Refer to TIMER button for details 4 FAN button Press this button you can select the fan speed in sequence auto AUTO low speed 4 medium speed 44 high speed af om 2 ad df Note Under auto mode air conditioner will select proper fan speed according to ex factory setting automatically Air conditioner will select proper fan speed according to ex factory setting automatically Low speed under dry mode 5 3l button Press this button can select up amp down swing Swing angle can be selected in sequence as below y N Sch Ki no display 4 horizontal louvers A di I stops at current position When selecting 31 with remote controller it s auto swing Horizontal louver of air conditioner will swing up amp down automatically at the maximum angle When selecting N y L T A with remote controller it s the fixed position swing Horizontal louver of air conditioner will stop at that position as shown by the icon to swing Under unit off status press button and II button simultaneously to switch between simple swing setting and fixed angle swing setting
51. lete unit stops and operation of remote controller or controller is unavailable During cooling and drying operation compressor and outdoor fan stop while indoor fan operates The complete unit stops During cooling and drying operation compressor and outdoor fan stop while indoor fan operates During heating operation all loads stop During cooling and drying operation compressor and outdoor fan stop while indoor fan operates During heating operation all loads stop 1 The main board and the display panel are not connected well 2 The OVC terminal on main board is not connected well with the high pressure switch on the complete unit 3 The wiring of high pressure switch is loosened 4 Refrigerant is superabundant 5 Poor heat exchange including blocked heat exchanger and bad radiating environment 6 Ambient temperature is too high if it is 3 phase unit the high pressure protection may be caused by overcurrent protection due to this reason 7 The supply voltage is abnormal if it is 3 phase unit the high pressure protection may be caused by overcurrent protection due to this reason 8 The air intake and air discharge at indoor outdoor heat exchanger are not smooth The air cycle is short circuited 9 Filter and heat exchange fins of indoor outdoor units are blocked 10 The system pipeline is blocked 11 The gas valve and liquid valve for outdoor unit are not completely opened 12 The OVC inp
52. n Tamb lt Tpreset 2 C compressor and outdoor fan will stop running Indoor fan will run at low fan speed 1 3 Heating Mode When TambsTpreset 1 C the unit will run in heating mode and the corresponding load will start running Indoor fan will run at the condition of anti cold wind When Tamb gt Tpreset 1 C the corresponding load will be stopped Indoor fan will run at setting fan speed and the condition of blowing residual heat When Tpreset lt Tamb lt Tpreset 1 C the unit will keep previous running status 1 4 Fan Mode Indoor fan will run at setting fan speed Compressor outdoor fan and reversing valve will stop running 1 5 Auto Mode In this mode the unit will decide its running mode according to the ambient temperature When Tamb 26 C the unit will run in cooling mode Internal setting temperature is 26 C When 20 C lt Tamb lt 26 C the unit will run in dry mode Internal setting temperature is 24 C When Tamb lt 20 C the unit will run in heating mode Internal setting temperature is 20 C When Tamb 224 C the unit will quit from the heating mode As for the cooling only unit when Tamb lt 20 C the unit will run at fan mode and the internal setting temperature is 20 C When Tamb224 the unit will quit from the fan mode 2 Protection Function 2 1 Indoor Antifreezing Protection When antifreezing protection is detected the corresponding load will be stopped After the antifreezing protection is released controlle
53. n piping hole 1 Choose the position of piping hole according to the direction of outlet pipe 2 Open a piping hole with the diameter of 70mm on the selected outlet pipe position In order to drain smoothly slant the piping hole on the wall slightly downward to the outdoor side with the gradient of 5 10 As show in Fig 1 Indoor Outdoor Piping hole Y 48K 70mm I 2 70mm 5 10 e Fig 1 ee Installation and Maintenance Service Manual Note 1 Pay attention to dust prevention and take relevant safety measures when opening the hole 2 The plastic expansion particles are not provided and should be bought locally Step three outlet pipe 1 The pipe can be led out in the direction of left right or rear As show in Fig 2 2 After confirming the direction of outlet pipe loosen the screws at the upper and lower adjusting baffle to let the connection pipe drain pipe connects the indoor unit As show in Fig 3 left back right Fig 2 left back right Al Gn Z Gp upper and lower adjusting baffle Fig 3 Step four connect the pipe of indoor unit 1 Take out the left and right screw cover and then remove the screws on air inlet panel to remove the panel As show in Fig 4 2 Aim the pipe joint at the corresponding bellmouth As show in Fig 5 3 Pretightening the union nut with hand 4 Adjust the torque force by referring to the followin
54. ng air guard and then remove the air guard air guard 50 Q Installation and Maintenance Service Manual 5 Remove electric box assy Remove the screw fixing electric box cover to remove the electric box cover disconnect each wiring terminal remove the relevant electrical elements according to the requirement remove the screw fixing electric box to remove the electric box assy electric box cover Installation and Maintenance Q 51 Service Manual 6 Remove top cover Remove the screw fixing top cover to remove the top cover 7 Remove evaporator assy Remove the screws fixing the top connection plate and lower connection plate of evaporator pull the left side plate and right side plate outwards slightly to remove the evaporator water guard and water tray after evaporator removing the evaporator remove the left and right air guard and water guard at the top side of evaporator water tray water guard 52 o Installation and Maintenance Service Manual Steps Procedure 8 Remove propeller housing clamp Remove the screws fixing propeller housing clamp and then pull the propeller housing clamp outwards to remove the pr
55. nnect outdoor unit Connect wires of outdoor unit Neaten the pipes Vacuum pumping and leakage detection Check after installation and test operation Finish installation Note this flow is only for reference please find the more detailed installation steps in this section Installation and Maintenance o 25 8 2 Installation Parts Checking Name Indoor unit 7 Sealing gum Outdoor unit 8 Wrapping tape Connection pipe 9 eae GROUSE Drainage pipe 10 Fixing screw 5 Connecting Drainage plug cooling cable power cord and heating unit Owner s manual remote controller Wall pipe Note 1 Please contact the local agent for installation 2 Don t use unqualified power cord 8 3 Selection of Installation Location Basic Requirement Installing the unit in the following places may cause malfunction If it is unavoidable please consult the local dealer 1 The place with strong heat sources vapors flammable or explosive gas or volatile objects spread in the air 2 The place with high frequency devices such as welding machine medical equipment 3 The place near coast area 4 The place with oil or fumes in the air 5 The place with sulfureted gas 6 Other places with special circumstances Indoor Unit 1 Avoid installing the indoor unit in a place where generated or leaked inflammable gas will stay 2 Avoid installing the indoor unit in a mois
56. nnection pipe e The calculation method of additional refrigerant charging amount on 36000 Btu h 10548 W the basis of liquid pipe enee Max length of Max height g capacity connection pipe difference 5000 Btu h 1465 W 9000 Btu h 2637 W 24000 Btu h 7032 W 28000 Btu h 8204 W SISSlalalalalajaja 3 3 3 3 3 3 3 3 3 3 42000 Btu h 12306 W 48000 Btu h 14064 W e When the length of connection pipe is above 5m add refrigerant according to the prolonged length of liquid pipe The additional refrigerant charging amount per meter is different according to the diameter of liquid pipe See the following sheet e Additional refrigerant charging amount prolonged length of liquid pipe X additional refrigerant charging amount per meter Additional refrigerant charging amount for R22 RA07C R410A and R134a Diameter of connection pipe Outdoor unit throttle Liquid pipe mm Gas pipe mm Cooling only g m Cooling and heating g m 096 89 5 or O12 6 or 09 5 016 or 019 925 4 or 0315 2 019 or 622 2 120 350 2 2 120 250 022 2 lo 0 350 Installation and Maintenance 63 Appendix 3 Pipe Expanding Method 64 Note Improper pipe expanding is the main cause of refrigerant leakage Please expand the pipe according to the following steps A Cut the pip e Confirm the pipe length according to the distance of indoor unit and outdoor unit e Cut the required pipe with pipe cutter B Remove the b
57. no no s the ambient temperature too high If it is a 3 phase unit high pressure yes gt Decrease the ambient temperature Malfunction is eliminated yes gt protection may be caused by overcurrent rotection due to this no lt 4 no Is the supply voltage normal If it is a 3 phase unit high pressure protection may no The normal voltage is lower than 90 of the rated Malfunction is eliminated yes gt be caused by overcurrent protection voltage on the nameplate due to this no yes SS Dee e Are the air beans _ Adjust the system to make the air intake and air Bees intake and air discharge at indoor outdoor heat no gt discharge of indoor and outdoor heat exchangers e Malfunction is eliminated yes gt exchanger smooth smooth ML yes 4 no gn A Sei Ee M um filth blockage on the filter or on he gt LM heat exchanger fins of indoor outdoor unit Ip Se pe Remove the blockage Malfunction is eliminated no Remove the blockage inside the pipeline of the system Malfunction is removed yes gt no L Arte gas valve and liquid valve for _ no pen the outdoor gas valve and liquid valve complete Malfunction is eliminated yes ___ outdoor unit opened completely es SE E Zeg yes q no y Replace the controller End 32 ee Installation and Maintenance Servic
58. opeller housing clamp propeller housing clamp 9 Remove propeller housing sub assy Remove the screws fixing propeller housing to remove the propeller housing sub assy propeller housing sub assy Installation and Maintenance O 53 Service Manual 10 Remove centrifugal blade Remove the nut fixing centrifugal blade to remove the centrifugal blade centrifugal blade 11 Remove motor Remove the remove the wire clamp on the rear plate disconnect the motor wire and remove the screws fixing motor to remove the motor 54 o Installation and Maintenance Service Manual Steps Procedure 12 Remove chassis Remove the screws fixing chassis to remove the chassis chassis 13 Remove left side plate and right side plate left side plate right side plate Remove the screws fixing left side plate and right side plate to remove the left side plate and right side plate sub assy Installation and Maintenance 55 Service Manual 11 2 Removal Procedure of Outdoor Unit Steps Procedure 1 Remove top panel top panel Twist off the screws used for fixing the top co
59. parts touching here s abnormal sound fro outdoor unit position of outdoor unit tighten screws and ogether inside the outdoor unit stick damping plaster between connected parts Short circuit inside the magnetic During heating the way valve has abnormal e 3 Replace magnetic coil coil electromagnetic sound T Abnormal shake of compressor Outdoor unit gives out abnormal sound Adjust the support toot mator comipressor ighten the bolts If add too much refrigerant during maintenance Abnormal sound inside the compressor please reduce refrigerant properly Replace compressor for other circumstances Abnormal sound inside the ee Installation and Maintenance Service Manual 10 Exploded View and Parts List 10 1 Indoor Unit 1 2 3 A 56 7 8 91011 12 13 14 15 316 17 18 19 2021 22 Lati 7j M ae E fef ERE Ea NE Ag y ig B Se AA ll JU TT Pr d 43 42 41 40 39 38 37 36 35 34 33 32 31 L30129 28 27126125 X Installation and Maintenance o e 45 Service Manual Er Part Code Description NO GVH48AH M3DNAB5A l Qty 1 TE OOOO o os TT 3 bet Side Pate tie O Dm 1 3 Right Side Piete Sub Assy ms 1 4 esprit O OOOO eee 5 s ter Tray Sub assy mm 6 evaporatorAssy O WS 1 7 ememweSemo RMT 8 Protection Cover 3004 TA 9 pai owes AT 10 _ erankshaft of Guide ower WSezosg 5 her tom TAN 5 ui
60. play so as to prompt users that the buttons have been locked up When keep pressing again the two buttons for another 3 seconds continuously the function of lockup will be removed and resume to display in normal state ee Technical Information Service Manual D OO s 2 ser TIMER BLOW SWING TEMP Kei SS SLEEP AIR E HEATERSMWING SPED AUTO L Jekejdsip pue uonoun suoyng AandV A and Y Buttons Continued e After switch on at first time if without any button input 1 consecutively press twice of A buttons in 20 seconds and soon access to the running of forced heating After the blades of blowing up and down opens to the minimum position start up running of all loads indoor and outdoor high speed blowers All characters will be displayed when the non inductive thermometer bulb is broken down The fault codes of breakdown will be displayed when the inductive thermometer bulb is broken down and then the buzzer rings After shutdown for five minutes or receiving shutdown signal within 5 minutes it enter the status of normal standby 2 consecutively press twice of W buttons in 20 seconds and soon access to the running of forced cooling After the blades of blowing up and down opens to the minimum position start up running of all loads indoor and outdoor high speed blowers besides the four way valve and then the buzzer rings After shutdown for five minutes or receiving shutdown signal within 5 minutes it
61. power failure after power recovered if the timer isn t reached the timer will be continued and time will be recalculated 3 7 LED Display Module Control 1 Indicator control Indicator will be in red when the unit is in standby status and it will turn to green when the unit is turned on When any one of the circumstances as below occurs the green indicator will blink compulsory heating compulsory cooling defrosting antifreezing protection overcurrent protection high low voltage protection of compressor high temperature protection of discharge pipe 2 Use the light button on remote controller to turn off the LED display When cancel the light by remote controller the complete display screen will go out except the running indicator 3 8 Buttons ON OFF button This button is used for control the on off of controller After each pressing of this button the on off status will be changes for once Mode button After pressing the mode button it will be selected and display as auto cooling drying fan heating not available for cooling only unit 8 and buttons This two buttons are used for adjusting temperature and timer Up amp down button This button is used for control the up amp down swing motor and it will be selected and displayed as angle 1 gt angle 2 angle 3 angle 4 angle 5 to and fro swing stop swing amp Fan speed button fan speed will be selected as auto low medium high super hi
62. r will run at setting mode Buttons won t be shielded during the antifreezing protection 2 2 High Pressure Protection of System When high pressure protection is detected the corresponding load will be stopped All button and remote control signal will be shielded and E1 will be displayed after high pressure protection of compressor is released all buttons and remote control signal will become normal 2 3 Low Pressure Protection of System When low pressure protection is detected for the first time the corresponding load will be stopped and the indicator will blink If the low pressure protection is detected for twice successively the corresponding load will be stopped and E3 will be displayed They can t resume automatically 2 4 High Temperature Protectionfor Discharge Pipe When high temperature protection for discharge pipe is detected the corresponding load will be stopped E4 will be displayed 2 5 Indoor High Temperature Resistant Protection When high temperature resistant protection is detected the corresponding load will be stopped 2 6 Overcurrent Protection When overcurrent protection is detected the corresponding load will be stopped and E5 will be displayed 3 Other Function 3 1 Defrosting The unit will judge according to the tube temperature and ambient temperature when it s detected that the outdoor condenser is frosting the unit will start defrosting Indoor fan and four way valve will stop running After defrosting is f
63. rature Fahrenheit display Fahrenheit e temperature CF Celsius CC CF 68 68 20 Ambient temperature Fahrenheit display Fahrenheit temperature CF CF Fahrenheit Fahrenheit display Fahrenheit 3 display Fahrenheit A A temperature CB Celsius C temperature CP Celsius CCD CF CF 86 86 30 Fahrenheit Fahrenheit display Fahrenheit 3 display Fahrenheit temperature CF Celsius CC temperature CF CF CF Celsius C 32 33 32 55 56 55 4 13 79 80 78 8 26 36 35 6 37 38 37 4 i 27 59 15 82 83 82 4 28 60 8 16 84 85 84 2 29 86 07 86 30 31 46 47 46 4 64 4 18 88 89 87 8 66 2 19 90 89 6 3 91 92 Celsi 2 4 41 42 41 43 44 42 8 48 49 48 2 50 51 so 10 69 8 21 93 94 93 2 71 6 22 95 96 95 2 33 34 35 36 37 us C 0 1 2 9 4 5 6 7 10 12 52 53 51 8 11 54 53 6 75 2 24 98 6 77 25 Appendix 2 Configuration of Connection Pipe 1 Standard length of connection pipe e 5m 7 5m 8m 2 Min length of connection pipe is 3m 3 Max length of connection pipe and max high difference 7000 Btu h 2051 W 4 The additional refrigerant oil and refrigerant charging required after 12000 BiU 3518 W prolonging connection pipe e After the length of connection pipe is prolonged for 10m at the basis 15000 BNS AE W of standard length you should add 5ml of refrigerant oil for each additional 5m of co
64. re and grounding wire of power supply must be corresponding to the live wire neutral wire and grounding wire of the air conditioner 8 The power cord and power connection wires can t be pressed by hard objects 9 If power cord or connection wire is broken it must be replaced 10 If the power cord or connection wire is not long enough please get the specialized power cord or connection wire from the manufacture or distributor Prohibit prolong the wire by yourself 11 For the air conditioner without plug an air switch must be installed in the circuit The air switch should be all pole parting and the contact parting distance should be more than 3mm 12 Make sure all wires and pipes are connected properly and the valves are opened before energizing 13 Check if there is electric leakage on the unit body If yes please eliminate the electric leakage 14 Replace the fuse with a new one of the same specification if it is burnt down don t replace it with a cooper wire or conducting wire 15 If the unit is to be installed in a humid place the circuit breaker must be installed Installation Safety Precautions 1 Select the installation location according to the require ment of this manual See the requirements in installation part 2 Handle unit transportation with care the unit should not be carried by only one person if it is more than 20kg 3 When installing the indoor unit and outdoor unit a suffi cient fixin
65. required mode AUTO COOL DRY FAN HEAT 3 Press or button to set your required temperature Temperature can t be adjusted under auto mode 4 Press FAN button to set your required fan speed auto low medium and high speed 5 Press XI button and button to select fan blowing angle Replacement of Batteries in Remote Controller y 1 Press the back side of remote controller marked with of battery box along the arrow direction 2 Replace two 7 AAA 1 5V dry batteries and make sure the position of polar and polar are correct 3 Reinstall the cover of battery box as shown in the fig and then push out the cover g 3 m z Note WW Signal sender Battery e During operation point the remote control signal sender at the receiving window on indoor unit e The distance between signal sender and receiving window should be no more than 8m and there should be no obstacles between them e Signal may be interfered easily in the room where there is fluorescent lamp or wireless telephone remote controller should be close to indoor unit during operation e Replace new batteries of the same model when replacement is required Cover of e When you don t use remote controller for a long time please take out the batteries battery box Remove e If the display on remote controller is fuzzy or there s no display please replace batteries 21 Technical Information o Service Man
66. rmal please replace ODU mainboard 8 F4 ODU air discharging temp sensor open short circuit Malfunction description The ODU air discharging temp sensor temperature value is too high or too low that out of the normal range Main check points a Pull off the ODU air discharging temp sensor check if the temp sensor resistance value match with present temperature b If the temp sensor resistance is normal please replace ODU mainboard 9 H6 ODU DC fan malfunction Main check points a Check if the DC fan connection terminal is well contacted b If only one fan is with malfunction please interchange the two fan terminal to see if the malfunction is eliminated If so the DC fan is with malfunction please replace the DC fan otherwise please replace the ODU mainboard If all above is normal please replace the ODU mainboard DC fan terminal Installation and Maintenance 39 Service Manual 10 P5 Compressor phase current overcurrent protection Malfunction description Compressor operation current is over than the setting protection value Main check points a Check if the indoor and outdoor ambient temperature is over than normal cooling heating temperature range b Check if the evaporator is too dirty that affect the heat exchanging effect 11 H3 Compressor overload protection Malfunction description Temperature of top compressor is over than the limit value Main check points a Normally the compre
67. s too low 15 Lc Compressor startup failure Main check points a Check if the compressor wiring connection is well connected b Check if the compressor startup interval is over 3 minutes if not please water for 3 minutes than turn on the unit c Check if there s too much refrigerant d Check if the compressor is damaged measure the resistance between any two phase of the three phases they should be almost the same if they re with big difference the compressor is damaged please check the insulation condition of three phases to the case 16 PU ODU capacitor charging malfunction Malfunction description after the unit is energized before the compressor starting operation the electrolytic capacitor on mainbiard should be charging After the charging command is received if it is detected by chip that the voltage of electrolytic capacitor is low it is ODU capacitor charging malfunction Main check points a Check if the unit voltage input is within normal range b Check if the electric reactor connection wiring and capacitor connection wiring is well connected if the electric reactor is open circuit c If above two issues are normal please replace ODU mainboard 17 P7 Module temp sensor circuit malfunction Malfunction description There s a thermal resistance on top of IPM module for detecting the module surface temperature if it is detected by chip that the temperature is over the normal range Main check points a
68. se insufficient cooling heating capacity 2 Test Operation 1 Preparation of test operation vacuum pump The client approves the air conditioner installation refrigerant 1 Specify the important notes for air conditioner to the client charging vent 2 Method of test operation valve cap Put through the power press ON OFF button on the remote controller to start operation Press MODE button to select AUTO COOL DRY FAN and HEAT to check whether the operation is normal or not H the ambient temperature is lower than 16 C the air conditioner can t start cooling Fig 28 Leakage Detection 1 With leakage detector Check if there is leakage with leakage detector 2 With soap water If leakage detector is not available please use soap water for leakage detection Apply soap water at the suspected position and keep the soap water for more than 3min If there are air bubbles coming out of this position there s a leakage 30 o 9 Installation and Maintenance Service Manual 9 Maintenance 9 1 Judgement by Flashing LED of Indoor Malfunction Error AIC Status Possible Causes Name Code High pressure protection High discharge temperature protection of compressor Installation and Maintenance During cooling and drying operation except indoor fan operates all loads stop operation During heating operation if it is inverter unit the complete unit stops if it is floor standing unit the comp
69. ssor overload protection switch is always on check if the switch is normal i z Compressor overload detection terminal E e 5 12 H5 IPM module protection Main check points a Check if the compressor wiring connection is well connected if the compressor wiring sequence is correct The correct wiring sequence is yellow blue red in anticlockwise direction b Measure if the DC voltage between D10 is around 15V if it is less than 13 5V or more than 18V please replace ODU mainboard c Pull off the compressor connection wire measure the impedance between phase U V W and P N if any of them is short circuit please replace the ODU mainboard d Check if the compressor is damaged measure the resistance between any two phases of the compressor three phases They should be almost the same if they re with big difference the compressor is damaged please check the insulation condition of three phases to the case gt s xxx Phase U phase V phase W LI sg ar aure ate l Se D Yo Mam d 40 Installation and Maintenance Service Manual 13 HC PFC protection Main check points a Check if the unit voltage input is normal b Check if the inductance wire is well connected c If the above two issues are normal please replace the ODU mainboard 14 H7 Compressor out of step malfunction Main check points a Check if the system pressure is too high b Check if the working voltage i
70. sure valve nmm E AUS c e GH 12 Low pressure vave ge e Macs EXE D e zm mew EHE E Overload protection anm ca WEFR el E nie 23E BQ He a 76 13 i t Hm wa p Dr 3 e i ed CS e j Ez i terminal el compressor High pressure sensor y Low pressure sensor Electronic expansion valve 18 Terminal of compressor ee MN x we ES ES A HC 7 EO oo a he l X In Ee Hr Se LL Tu a i wm dem orto E E E 3 lue Dau 250 ag V uBPus V LBPi VA GRZ88 A V2 1 2014 02 28 D N ERE e 01717 3 415 8 7 8 9 sign O y 2 3 4 e Bottom view U2 t pa bD a bD a d hd D P mm mu EE EE FE EE 8 mmm e e e CJ D a cc H a e a d dea D dpa vo O e 11 Technical Information o Service Manual 6 Function and Control 6 1 Function Buttons of Air Conditioner Jo SI ser BLOW SING a TEMP e m AIR E HEATERSHING SPEED AUTO L M Xx O COOL HEAT AUTO o C s oM ak ff H Turso SAVE ROOM OFFICE iran Speed Je e dsip pue uonoun suoyng ON OFF ON OFF Button e Press this button to turn on the unit When unit is turned on the original setting like Timer Sleep function will be canceled Note When the unit is running
71. t place or in a place where oil may be splashed on the unit 3 Select a location where outlet air may reach each corner of the room 4 Select a location where connection pipe can be led to outdoor conveniently 5 Select a location where air inlet and outlet won t be blocked 6 Select a location with least affection of outdoor air 7 Select a location with firm and flat floor 8 Retain sufficient space for maintenance and installation 9 Ensure the installation meets the requirement of installation dimension diagram 10 Keep it away from fluorescent lamp Outdoor Unit 1 Select a location where the noise and outflow air emitted by the outdoor unit will not affect neighborhood 2 The location should be well ventilated and dry in which the outdoor unit won t be exposed directly to sunlight or strong wind 3 The location should be able to withstand the weight of outdoor unit 4 Make sure that the installation follows the requirement of installation dimension diagram 5 Select a location which is out of reach for children and far away from animals or plants If it is unavoidable please add fence for safety purpose 6 The height difference between indoor unit and outdoor unit should be within 5m The length of connection pipe should be within 10m 26 Service Manual 8 4 Electric Connection Requirement N Safety Precaution 1 Must follow the electric safety regulations when installing the unit 2 Accordin
72. tion posu s proper Adjust the installation position and install the Me according to installation requirement for air and outdoor unit is improper Conditioner rainproof and sunproof for outdoor unit Discharged air temperature during cooling is higher than normal discharged wind temperature Discharged air temperature during heating is Find out the leakage causes and deal with it lower than normal discharged wind temperature Add refrigerant Unit s pressure is much lower than regulated range Malfunction of 4 way valve Blow cold wind during heating Replace the 4 way valve Discharged air temperature during cooling is higher than normal discharged wind temperature Discharged air temperature during heating is Malfunction of capillary lower than normal discharged wind temperature Replace the capillary Unit t pressure is much lower than regulated range If refrigerant isn t leaking part of capillary is blocked i he pressure of valves is much lower than that Gier stated in the specification H p y Horizontal louver can t swing Refer to point 3 of maintenance method for details Malfunction of the IDU fan motor The IDU fan motor can t operate Refer to troubleshooting for H6 for maintenance method in details Malfunction of the ODU fan motor The ODU fan motor can t operate de paint 4 of maintenance method for Compressor can t operate hash point 5 of maintenance method for 3 Horizontal Louver Can t Swing Possible Causes Discriminatin
73. ual Part Installation and Maintenance 7 Notes for Installation and Maintenance 22 Safety Precautions Important Please read the safety precautions carefully before installation and maintenance The following contents are very important for installation and maintenance Please follow the instructions below eThe installation or maintenance must accord with the instructions eComply with all national electrical codes and local electrical codes ePay attention to the warnings and cautions in this manual eAll electric work must be performed by a licensed technician according to local regulations and the instructions given in this manual eBe caution during installation and maintenance Prohibit incorrect operation to prevent electric shock casualty and other accidents N Warnings Electrical Safety Precautions 1 Cut off the power supply of air conditioner before checking and maintenance 2 The air condition must apply specialized circuit and prohibit share the same circuit with other appliances 3 The air conditioner should be installed in suitable location and ensure the power plug is touchable 4 Make sure each wiring terminal is connected firmly during installation and maintenance 5 Have the unit adequately grounded The grounding wire can t be used for other purposes 6 Must apply protective accessories such as protective boards cable cross loop and wire clip 7 The live wire neutral wi
74. ubject to change without prior notice
75. unit band liquid pipe drain hose 28 Service Manual indoor power cord Fig 15 Note 1 The power cord and control wire can t be crossed or winding 2 The drain hose should be bound at the bottom Step eight place the indoor unit 1 Put the bound pipes in the wall pipe and then make them pass through the wall hole 2 Stuff the gap between pipes and wall hole with sealing gum As show in Fig 16 3 Fix the wall pipe 4 Check if the indoor unit is installed firmly indoor outdoor wall pipe sealing gum lez UZ mi ZZ Fig 16 A Note Do not bend the drain hose too excessively in order to prevent blocking 8 6 Installation of Outdoor Unit Step one fix the support of outdoor unit select it according to the actual installation situation 1 Select installation location according to the house structure 2 Fix the support of outdoor unit on the selected location with expansion screws N Note 1 Take sufficient protective measures when installing the outdoor unit 2 Make sure the support can withstand at least four times the unit weight 3 The outdoor unit should be installed at least 3cm above the floor in order to install drain joint As show in Fig 17 4 For the unit with cooling capacity of 2300W 5000W 6 expansion screws are needed for the unit with cooling capacity of 6000W 8000W 8 expansion screws are needed for the unit with cooling capacity of 10
76. urrs e Remove the burrs with shaper and prevent the burrs from getting into the pipe C Put on suitable insulating pipe D Put on the union nut e Remove the union nut on the indoor connection pipe and outdoor valve install the union nut on the pipe E Expand the port e Expand the port with expander Note e A is different according to the diameter please refer to the sheet below Outer diameter mm unm 66 6 35 1 4 Max 9 52 3 8 12 12 70 1 2 16 15 88 5 8 F Inspection e Check the quality of expanding port If there is any blemish expand the port again according to the steps above Service Manual Pipe Shaper Downwards Union pipe Smooth surface leaning damaged crack uneven v lt surface thickness The length is equal Installation and Maintenance Service Manual Appendix 4 List of Resistance for Temperature Sensor Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units 15K Temp C Resistance kO Temp C Resistance ka Tempco Resistance ka Temp C Resistance ka 19 20 1875 so 384 98 1 071 48 os 21 oe 60 am 99 109 ar os 22 waa 61 3579 10 1009 16 115 23 16 39 62 3 454 0 98 45 1087 24 1568 63 3333 102 0952 a wa 25 15 64 327 19 095 48 oa 26 1436 315 104 089 12 92 22 27 13 7
77. ut is at high level 1 Poor air return in indoor unit 2 Abnormal fan speed 3 Dirty evaporator 4 System is normal but the indoor tube temperature sensor is abnormal or the tube temperature sensor is not connected well 1 The main board and display panel are not connected well 2 The LPP terminal on the main board is not connected well with the high pressure switch on the complete unit 3 The wiring of the high pressure switch is loosened High pressure Switch is damaged or poorly contacted 4 Insufficient or leaking out refrigerant 5 The LPP input is at high level 1 Abnormal system e g blockage etc 2 Abnormal rotation speed of outdoor motor cooling 3 Abnormal air intake cooling 4 System is normal but the compressor discharge temperature sensor is abnormal or poorly contacted 1 Unstable supply voltage Normal fluctuation shall be within 1096 of the rated voltage on the nameplate 2 Supply voltage is too low and load is too high 3 Measure the current of live wire on main board If the current isn t higher than the overcurrent protection value please check the controller 4 The indoor and outdoor heat exchangers are too dirty or the air inlet and air outlet are blocked 5 The fan motor is not running Abnormal fan speed fan speed is too low or the fan doesn t run 6 The compressor is not running normally There is abnormal sound oil leakage or the temperature of the shell is too high etc
78. ver with screwdriver lift up the top cover and then remove the top cover 2 Remove front side plate Twist off the screws used for fixing the front side plate pull the front side plate forward and outward and then remove the front side plate front side plate 56 e Installation and Maintenance Service Manual Step Procedure 3 Remove right side plate Twist off the screw used for fixing the right side plate and then pull the right side plate outward right side plat 4 Remove guard grille Remove 6 screws fixing the guard grille and then remove the guard grille Installation and Maintenance e 57 Service Manual 5 Remove grille Twist off the screw used for fixing the grille loosen the clasp pull out the grille outward and then remove the grille 6 Remove cabinet
79. versal meter to measure the resistance Coil of compressor is burnt out ws Repair or replace compressor between compressor terminals and it s O Cylinder of compressor is blocked Compressor can t operate Repair or replace compressor 6 Air Conditioner is Leaking Discriminating method air conditioner status Troubleshooting Drain pipe is blocked ater leaking from indoor unit Se the Foreign objects inside the drain Drain pipe is broken ater leaking from drain pipe Replace drain pipe rapping is not tight Wee from the pipe connection place rap it again and bundle it tightly 7 Abnormal Sound and Vibration Discriminating method air conditioner status Troubleshooting hen turn on or turn off the unit he panel and other parts will here s the sound of PAPA Normal phenomenon Abnormal sound will expand and there s abnormal disappear after a few minutes sound hen turn on or turn off the unit here s abnormal sound due e Normal phenomenon Abnormal sound will i ae ater running sound can be heard e o flow of refrigerant inside air disappear after a few minutes conditioner Foreign objects inside the indoor Remove foreign objects Adjust all parts unit or there re parts touching here s abnormal sound fro indoor unit position of indoor unit tighten screws and stick ogether inside the indoor unit damping plaster between connected parts Foreign objects inside the outdoo Remove foreign objects Adjust all parts unit or there re
80. ween indoor unit and outdoor unit Under normal power supply circumstances or poor connection for wiringloperation indicator isn t bright after energization terminals Check the circuit according to circuit diagram and connect wires correctly Make sure all iring terminals are connected firmly Make sure the air conditioner is grounded reliably Make sure wires of air conditioner is connected correctly Check the wiring inside air conditioner Check hether the insulation layer of power cord is damaged if yes place the power cord Model selection Tor all SWitehis fter energization air switch trips off Select proper air switch improper After energization operation indicator is bright e Malfunction of remote controller while no display on remote controller or buttons Replace batteries for remote controller have noar Repair or replace remote controller 2 Poor Cooling Heating for Air Conditioner Possible Causes Discriminating Method Air conditioner Status Troubleshooting et temperature is improper Observe the set temperature on remote controllerlAdjust the set temperature After energization room circuit breaker trips off at Electric leakage for air conditione once Rotation speed of the IDU fan Small wind blow Set the fan speed at high or medium motor is set too low ilter of indoor unit is blocked Check the filter to see it s blocked Clean the filter Installation position for indoor unio heck whether the installa

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