MSF3-12HRN2(AAC
Contents
1. 34 E a OR Pee ceu E E E E eae ee 34 AUO restart TUNCUO Nasa ee eee ln a 34 A te eer en ere OE AR R er cee A 34 Model and Paramelers uuu lo 35 Tronbieshootiijig rm 36 Display Dog Rae TL PEE 36 Jio be hO ii asista ee oa 37 Diagnostic ENA askja zai zac O GEJA rn EC 38 Resetting phenomenon often occurs during operation ooooooWoWo WWW 39 Operation lamp flashes and Timer lamp off a 39 Operation lamp flashes and Timer lamp on a 39 Operation lamp off and Timer lamp flashes a a 40 Operation lamp on and Timer lamp flashes a a venen 40 Operation lamp flashes Timer lamp flashes a a 40 Characteristic of temperature Sensor a aaaaaaaaaaaaananaunnnnnnnnaunnnununnnnnunnnnnnunnnnnnnnnnnnnnnnnnunnnnnunnnnnnna 41 Service manual 1 Precaution 1 1 Safety Precaution To prevent injury to the user or other people and property damage the following instructions must be followed e Incorrect operation due to ignoring instruction will cause harm or damage e Before service unit be sure to read this service manual at first 1 2 Warning Installation e Do not us2. d wd _ O dSNVH 67 vl CS WOO ISdS AVIHBWN u EAT 100 NYA Tho NVA Of d ISd I To z I mn BOO oD Te 4 TE t3 301 Nd OIND Nt IOA oa Ara os N ES ER 2 SE Icd ISSA ic INO a z 4 vd 5 mo 09 SPI NI Id 3 s gine SHINI LIA Vas gg st Zd Od Ara gaende DS aa Od ARI ds dd vv ALS z onda Od rr d S MOI STA E ai 018 0d gs HIS a zna Sd NN NEAL Ex AND vas I o otat W TS S OA HIND or 4100001 ASTANQOTT 9INO TMS IV Mb Ov FM 01 SSA EERTE S Sy OE SM 99168LAN z R AS A91 4001 T Ter ra MAKAR KENA Lar TEMEER EIA Out o gt u a OREN U car SER ET UM NVL o q Lauk E z AOVACHH dSNVA PERAH A BH ZE EEG I AK aos CA m 4 ONTT suq ROI BOMEN ABE WOE 5 OST 61A LEGE TEEN AN ERIC WA a AS H AS SL BAT CI8L 12 p1007NI Id 10 Service manual 7 2 Wiring diagram MSF3 07CRN2 MSF3 09CRN2 MSF3 12CRN2 INDOOR UNIT OUTDOOR UNIT OVERLOAD RELAY COMPRESSOR Y G BLUE COMPRESSOR x CAPACITOR de CAPACITOR 11 Service manual MSF3 07HRN2 MSF3 09HRN2 MSF3 12HRN2 STEP MOTOR Es z INDOOR NTR 34 BBB j y Tem UN F PUR Z R m mis Gi m3 2 S a 7 GA gt gt n ath E B PL D D D T m1203 4 INDOOR UNIT OUTDOOR UNIT 1 BLACK OVERLOAD RED RELAY C T BLACK COMPRESSOR RED Y G ze AMIR COM
3. 3 5 The current protection of the compressor Current down 3sec Compressor turn off after 5 seconds later 5min Compressor turn off Current up after 5 minute later fan The outdoor fan turn off heating restore The outdoor fan turn Indoor fan On low speed cooling compressor On outdoor fan On If compressor turns off for continuously 4 times due to current protection in 5 minutes from Compressor On the unit stops and LED displays failure information and can t returns to normal operation automatically 11 4 Fan only mode Fan speed is high mid low Auto 11 5 Cooling mode The 4 way valve is closed at cooling mode The action of the compressor and the outdoor fan T indoor temperature Compressor on outdoor fan on Room temp down Room temp up Compressor off outdoor fan off 0 1 T Ts 29 Service manual Auto fan at cooling mode High fan Mid fan Room temp down Low fan Room temp up 1 3 5 T Ts Anti freezing control to indoor evaporator at cooling mode T evaporator temp Compressor and outdoor fan on EVAP temp down EVAP temp up Compressor and outdoor fan off after 5 mins TES TEG T 11 6 Dehumidifying mode 11 6 1 The 4 way valve is off in dehumidifying mode 11 6 2 Compressor and Indoor Fan actions in dehumidifying mode C B A 0 2 TA TS Compressor and Outdoor Fan a A LOW JON 6minutes BREEZE OFF 4minutes NON LOW JON 5minutes
4. 5 sec at the starting Time Delay Safety control Restarting is for approx 3 minutes Indoor fan speed control high med low breeze Operation indication Lamps LED Light up in the LED LCD for each operation mode Two direction air vane The unit will decide the louver direction according to operation mode Sleep mode auto control The fan is turn to low speed cooling heating The unit will be turn off at the seventh hour Independent dehumidification The function is usually used in rainy days in springtime or damp areas Self diag function The function will be operate in any operation Air flow Direction control The louver can be set at the desired position or swing up and down automatically Auto mode The unit can be change by the room temperature Turbo mode Anti cold function Prevent the cold wind at the beginning of unit start Defrost mode Auto restart function Flexible wiring connection Easy clean panel Service manual Outdoor unit Power relay control The unit has 3 mins delay between continuously ON OFF operations Low noise air flow system Bird tail propeller fan makes the outdoor unit run more quietly Hydrophilic aluminum fin The hydrophilic fin can improve the heating efficiency at operation mode 4 way valve control It is only operated in the heating operation mode except defrosting operation Discharge pipe temperature protect Anti rust cabin
5. A the defrosting time is 7 5minutes At condition the defrosting time is 10 minutes After three times continuous 7 5minute defrost the fourth defrost time should be 10 minutes The circulation is as following 7 5 minutes 7 5 minutes 7 5minutes 10 minutes defrost defrost defrost defrost 11 8 3 Ending condition of defrosting If one of following conditions is satisfied end the defrost and turn into heating mode A The defrost time has reached to 7 5 or 10 minutes B The compressor current has reached to Iberrosr Or above lpeRosr differs in different models 11 8 4 Defrosting Actions Defrost 10 or 7 5 minutes J Compressor i 25s gt lt 5s 4 way valve a gt 4 2s Outdoor fan m 2 i Indoor fan 3 j 10s gt lt q 11 9 Auto mode 11 9 1 The air conditioner automatically selects one of the following operation modes cooling heating or fan only according to the temperature difference between room temperature TA and set temperature TS Heating fan only at cooling Fan only Cooling I 1 2 TA TS 11 9 2 The indoor fan blows automatically in corresponding selected mode 11 9 3 The motion of indoor fan s blade should accord with the selected operation mode 11 9 4 One mode should be carried out for at least 15 minutes once selected If the compressor cannot start for 15 minutes reselect the operation mode according to the room temp and set temp o
6. defective Check if AC 14 5V exists at the secondary coil of transformer Yes No Y Take off the secondary plug of transformer and then check if AC 14 5V exists at the secondary coil of transformer No v Yes Indoor PCB is defective Indoor PCB is defective 38 Service manual 13 4 Resetting phenomenon often occurs during operation That is automatically entering to the status when power is on The reason is that the instantaneous voltage of main chip is less than 4 5V Check according to the following procedure Resetting phenomenon often occurs during operation Yes After changing indoor PCB check if the failure realease 1 Yes Y Indoor PCB is defective After changing indoor fan motor check if the failure realease YES Power supply circuit has problems 13 5 Operation lamp flashes and Timer lamp off Is connector connection good Is voltage being applied to the fan motor Indoor PCB is defective Fan motor is defective 13 6 Operation lamp flashes and Timer lamp on Is connector connection good Repair the connector Replace the sencor 39 Service manual 13 7 Operation lamp off and Timer lamp flashes Operation lamp off and Timer lamp flashes After changing the main control boarc check if the failure realease Indoor PCB is defective The
7. 12 C D CD 0 C D 4 C D 7 C D 15 C D ressure Conditions 11 C W 6 C W 1 W 6 C W 9 C W x C W a 21 5 3 CINE IE Ds ka cm awe Pressure aso 2 KU CLL 20 Service manual 9 3 MSF3 09CRN2 Cooling mode Outdoor temperature Dry bulb temp Indoor R Pressure 25 C 30 C 35 C 45 C 50 C Conditions Fb i 15 W kg cm id 10 2 10 8 17 C W kg cm 19 C W kg cm 0 10 5 11 2 23 W kg cm 9 4 MSF3 09HRN2 Cooling mode Outdoor temperature Dry bulb temp Indoor m Pressure 309C 35 C Conditions 21 C D Pressure 5 8 1 8 4 15 C W kg cm 24 C D Pressure 7 9 8 2 8 7 2 9 5 10 1 17 W kg cm 27 C D Pressure 8 0 8 5 9 2 9 9 10 2 10 8 19 C W kg cm 0 23 C W kg cm Heating mode OUTDOOR CONDITIONS Indoor M 12 C D 7 C D 0 C D 4 C D 7 C D 15 C D ressure Conditions 11 ecw ACW ecw cw xcw 15 C bus 26 5 25 0 22 0 21 5 20 5 kg cm 18 ASA 27 0 26 0 23 5 22 5 20 8 kg cm 9 0 20 C 27 5 26 5 25 0 23 0 21 0 kg cm 22 Pressure 28 5 27 0 25 5 23 9 21 5 kg cm 21 Service manual 9 5 MSF3 12CRN2 Cooling mode Outdoor temperature Dry bulb temp ndoor o sec sc we ao we 2 24 C D Pressure 17 C W kg cm Pressure kg cm Pressure kg cm 9 6 MSF3 12HRN2 Cooling mode ndoor Pressure Conditions
8. 21 C D Pressure 15 C W kg cm 17 C W kg cm Pressure kg cm Pressure kg cm Heating mode OUTDOOR CONDITIONS Indoor Braden 12 C D 7 C D 0 C D 4 C D 7 C D 15 C D Conditions 11 C W 6 C W 1 C W 6 C W 9 C W W Pressure Pressure Pressure 0 Pressure B 21 4 22 0 23 6 24 0 N PS N B 22 Service manual 10 Capacity table 10 1 MSF3 07CRN2 OUTDOOR TEMPERATURE DRY Indoor Conditions Total capacity kW 1 92 1 82 1 69 1 54 1 41 1 31 Input kW 0 63 0 70 0 77 0 84 0 90 0 97 Total capacity kW 2 22 2 17 2 05 1 88 1 71 1 55 pee 10 2 MSF3 07HRN2 OUTDOOR TEMPERATURE DRY Indoor Conditions Input kW 0 72 0 99 23 Service manual WINTER OUTDOOR CONDITIONS 12 C D 7 C D 4 C D 0 C D 11 C W 6 C W 3 C W 1 C W 10 3 MSF3 09CRN2 Indoor Conditions OUTDOOR TEMPERATURE DRY Indoor eer p 290 we ae e ase Conditions input KW sensitive capactykWw 193 186 182 178 194 Craw 08 105 144 422 aide 24 Service manual x7 3 4 REN O9HRN2 OUTDOOR TEMPERATURE DRY BE Conditions Total eae KW 2 44 2 32 2 16 1 98 1 82 1 70 21 C D Input kW 0 87 0 95 1 03 1 11 1 20 1 28 WINTER OUTDOOR CONDITIONS indoor 12 C D 7 C D 4 C D 0 C D 4 D 7 C D Conditions 11 C W 6 C W 3 C W 1 C W 6 C W 8 C W Capacity kW 3 53 3 1
9. 3 2 75 1 77 1 47 1 42 Service manual 10 5 MSF3 12CRN2 Indoor 25 C 30 C 35 C 40 C 45 C 50 Conditions Total capacity kW 3 31 3 14 2 92 2 68 2 45 ed 35 29 2 55 19 W Sensitive capacity kW 2 71 2 65 2 42 2 30 Total capacity kW 4 05 3 96 3 88 3 15 3 57 3 39 32 C D Sensitive capacity kW Input kW 10 6 MSF3 12HRN2 OUTDOOR TEMPERATURE DRY Indoor Conditions a Total capacity kW 3 18 2 32 26 Service manual WINTER OUTDOOR CONDITIONS Indoor Conditions Capacity KW 446 406 359 217 194 190 nputkW 164 143 129 113 108 098 27 Service manual 11 Electronic function 11 1 Proper symbols and their meaning TA Indoor ambient temperature TE Indoor evaporator temperature TS Setting temperature through the remote controller lasec Self protection amp of compressor continue three seconds until turns off the compressor Isun Self protection amp of compressor continue five minutes until turns off the compressor Iran Self protection amp of outdoor fan indoor fans when they change from higher wind to lower wind Ikestore Amp self protection return value THpernosr High wind defrosting temperature difference TMperrosr Middle wind defrosting temperature difference TLpernosr Low wind defrosting temperature difference TE1 Anti cold wind from Fan Off to Breeze temperature TE2 Anti cold wind from Breeze to Se
10. BREEZE OFF 5minutes C LOW ON 4minutes BREEZE OFF 6minutes Repeat on and off cycle 11 6 3 Low room temperature protection When room temperature decreases to below 10 C compressor and outdoor fan will stop indoor fan is Breeze Dehumidifying operation will be resumed when room temperature restores to over 13 C 30 Service manual 11 6 4 At dehumidifying mode the anti freezing function of the indoor heat exchanger is the same as that of cooling mode 11 6 5 At dehumidifying mode the action of fans of indoor is the same as that of air only mode 11 7 Heating mode 11 7 1 Generally the 4 way valve is open in heating mode but it is closed in defrosting mode 4 way valve must delay 2 minutes compared with compressor if the compressor changed into non heating mode or turned off 4 way valve doesn t delay in dehumidifying mode 11 7 2 Generally the outdoor fan is turned off with the on off action of compressor in heating mode except for the defrosting mode or the end of defrost 11 7 3 Action of compressor and outdoor fan motor at heating mode compressor must run for 7 minutes after starting and then judge temperature Meanwhile other protections are still valid Compressor and outdoor fan off Room temp down Room temp up Compressor and outdoor fan on Ts Ts 2 Ts 3 T This parameter can be changed from 0 to 3 11 7 4 Indoor Fan actions at heating mode Indoor Fan can be set at HIGH MID LOW AUTO by using a remot
11. Cover Service manual Room airconditioner Split Wall Mounted Type Applied to WMSF3 07CRN2 MSF3 07HRN2 MSF3 09CRN2 MSF3 09HRN2 AAC 09ESCH MSF3 12CRN2 MSF3 12HRN2 AAC 12ESCH NOTE Before servicing the unit please read this at first Always contact with your service center if meet problem 1 1 1 2 3 1 3 2 6 1 6 2 7 1 r 8 1 8 2 8 3 8 4 8 5 8 6 8 7 8 8 8 9 9 1 9 2 9 3 9 4 9 5 9 6 10 10 1 10 2 10 3 10 4 Content Content FOC ET 4 m a 2 BA accu unuy E EA 2 VA NO 2 A E MERE 3 DIMENSION aa 5 MAOO Dg 5 OUTDOOR OAM cites aun a RANA 5 Kor ble muu AR s 6 Fefrigerant Cycle daga Mi 8 Operation MIS onn aa EN IU 9 Cooling DEFA N oeaan a it 9 ea D EL 9 Schematic diagram and Wiring diagram oo oo Wo 10 SENNA han seria ioia Mean ea o 10 WING AGAM eren eeen A AA eenden ayu Qosa 11 installation detalls uuu RE 13 Wrench torque sheet for installation uns aaa aaa aa eenen eener eenenrveneneennenvennen nnn nnns 13 Conrnescirng the Cables minti r u uu u uu a a u u S u aa 13 Pipellength and the SleVatlon ita 13 Air purging of the piping and indoor unit annees Wa 14 Pumping down Re installation uns Wo Wb 15 Ise alr purging Re hstallaloM sepa enteren ie a ee dee ia 16 Balance refrigerant of the 2 way 3 way valves aaa
12. PRESSOR Y CAPACITOR CAPACITOR Service manual 8 Installation details 8 1 Wrench torque sheet for installation Outside diameter 8 2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet 8 3 Pipe length and the elevation ipe si Max Fes Standard Max Additional length Elevation refrigerant m g m Capacity Btu h Indoor unit Indoor unit In case that more than Caution Capacity is base on standard length and maximum allowance length is base of reliability Oil trap should be install per 5 7 meters 13 Service manual 8 4 Air purging of the piping and indoor unit Required tools Hexagonal wrench adjustable wrench torque wrenches wrench to hold the joints and gas leak detector Note The air in the indoor unit and in the piping must be purged If air remains in the refrigeration piping it will affect the compressor reduce the cooling capacity and could lead to a malfunction of unit Be sure using a torque wrench to tighten the service port cap after using the service port so that it prevents the gas leakage from the refrigeration cycle Procedure Recheck the piping connections Open the valve stem of the 2 way valve counterclockwise approximately 90 wait 10 seconds and then set it to closed position Be sure to use a hexagonal wrench to operate the valve stem Check for gas leakage Check the f
13. anaaaananaaaaaaaananananaaanananannnaanananannanananaaaanaananaaa 17 FV I lO Re TRE TS Z R R A id NR ARA 18 Gas charging PO naa ena 19 Pressure tab gem em 20 MSESOACRN2 nent antenne a a na an 20 RN ae E 20 MOFS OSCANZ ER 21 MOR OOOI N m cR UM T 21 Miele T268RN2 u ue m 22 MORTAN a a N an LM E 22 Capacity ae aa na 23 MOFOOZERNZ AOR San 23 MSES O HISINZ ibo aan a BL at R d ena Dei M I MM DIM EMIL 23 A C i MM ue e c 24 c Y 25 10 5 10 6 11 11 1 11 2 11 3 11 4 11 5 11 6 11 7 11 8 11 9 11 10 11 11 11 12 11 13 12 13 13 1 13 2 13 3 13 4 13 5 13 6 13 7 13 8 13 9 14 Content VISES AZ G N2 P M 26 octo Re MAA NN 26 Electronic function uuu u u uuu uuu uu elt SBN BAN 28 Proper symbols and their meaning 28 FUNCNO Pm 28 F OL CUO nme eU TP T LA 28 Pa on TOG A H 29 on Ag Na 29 Deburmaltylrag MO EEn 30 FSE Mag Oro A AE Pa cae ens na PA an Pata PAN Na GRAIN 31 Defrosting mode available for heating mode 32 AUTO NMO OE need 33 Force COON TUNCHO NM e
14. charge set to the service port of the 3 way valve Connect the charge hose with the push pin to the gas service port Air purging of the charge hose Open the low pressure valve on the charge set slightly to purge air from the charge hose Set the 2 way valve to the close position Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 0 1MPa Immediately set the 3 way valve to the closed position Do this quickly so that the gauge ends up indicating 0 3 to 0 5Mpa Disconnect the charge set and amount the 2 way and 3 way valve s stem nuts and service port caps Use a torque wrench to tighten the service port cap to a torque of 1 8 kg m Be sure to check for gas leakage Service manual 8 6 Re air purging Re installation oda VENEN pad al Indo t A Indoor unit 4 1 Liquid side Outdoor unit IURE M TUN sio Charging cylinder Procedure Confirm that both the 2 way and 3 way valves are set to the closed position Connect the charge set and a charging cylinder to the service port of the 3 way valve Leave the valve on the charging cylinder closed Air purging Open the valves on the charging cylinder and the charge set Purge the air by loosening the flare nut on the 2 way valve approximately 45 for 3 seconds then closing it for 1 minutes repeat 3 times After purging the air use a torque wrench to tighten the flare nut to on the 2
15. drained away properly A bad connection may cause water leakage O Keep level even when installing the product To avoid vibration of water leakage Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods It may cause a problem for your neighbors Use two or more people to lift and transport the product Avoid personal injury O Do not install the product where it will be exposed to sea wind salt spray directly It may cause corrosion on the product Corrosion particularly on the condenser and evaporator fins could cause product malfunction or inefficient operation Operational e Do not expose the skin directly to cool air for long periods of time Do not sit in the draft This could harm to your health Do not use the product for special purposes such as preserving foods works of art etc It is a consumer air conditioner not a precision refrigerant system There is risk of damage or loss of property Do not block the inlet or outlet of air flow It may cause product failure Use a soft cloth to clean Do not use harsh detergents solvents etc There is risk of fire electric shock or damage to the plastic parts of the product Do not touch the metal parts of the product when removing the air filter They are very sharp There is risk of personal injury Do not step on pr put anything on the product outdoor units There is risk of persona
16. e a defective or underrated circuit breaker Use this appliance on a dedicated circuit There is risk of fire or electric shock For electrical work contact the dealer seller a qualified electrician or an Authorized service center Do not disassemble or repair the product there is risk of fire or electric shock Always ground the product There is risk of fire or electric shock Install the panel and the cover of control box securely There is risk of fire of electric shock e Always install a dedicated circuit and breaker Improper wiring or installation may cause fore or electric shock O Use the correctly rated breaker of fuse There is risk of fire or electric shock Do not modify or extend the power cable There is risk of fire or electric shock Do not install remove or reinstall the unit by yourself customer There is risk of fire electric shock explosion or injury Be caution when unpacking and installing the product Sharp edges could cause injury be especially careful of the case edges and the fins on the condenser and evaporator For installation always contact the dealer or an Authorized service center There is risk of fire electric shock explosion or injury Do not install the product on a defective installation stand It may cause injury accident or damage to the product Be sure the installation area does not deteriorate with age If the base collapses the air c
17. e after the air conditioner running under economic mode after 2 hours and during the next time the set temp do not change The total time is 7 hours after 7 hours the unit stops 11 12 Auto restart function In case of a sudden power failure this function automatically sets the unit to previous settings before the power failure when power returns 11 13 Turbo mode In cooling mode when pressing the Turbo button on the remote controller the unit will enter Turbo mode with ultra high speed and reach the set temperature more quickly After running 20 minutes in turbo mode the indoor fan will automatically recover the preset speed 34 12 Model and Parameters 35 4C 10 C MSF3 07HR 7 5A 6 2A 5 2A 4 2A 3 24 28 C 32C 30 C 26 C 10 C 60 C o3C 50 C 200 124 17e C 1 8e C 19 C Service manual MSF3 09CR MSF3 12HR 10 0A 7 5A 5 5A 4 5A 35 sa lec ES 320 po E le He oc teo K COO e cie mo 20 C tec 28 C 19 C 26 C Service manual a roupresnooting 13 1 Display board Infrared signal receptor OPERATION AUTO TIMER C Es C ECON PRE DEF C Operation The indicator flashes once every second after power is on and illuminates when the air conditioner is in operation imer indicator The indicator illuminates then TIMER is set ON PRE DEF indicator For cooling amp heating mode only The air conditioner starts defrosting automatically i
18. e controller but Anti cold wind function prevails Anti cold wind control function at heating mode T indoor exchanger temp T temp down Fan off TE4 TE1 TE3 TE2 T Setting fan speed Breeze 31 Service manual 11 7 5 Auto wind at heating mode T indoor temp Low fan Room temp down Room temp up Med fan 0 2 T Ts 11 7 6 Indoor evaporator high temperature protection at heating mode T indoor exchanger temp T temp down Compressor on Fan on ee TES TE8 TE7 T Compressor off Fan off Compressor on Fan off 11 7 7 The louver opens to Standard Angle ANGLHEAT when power is on for the first time 11 8 Defrosting mode available for heating mode 11 8 1 Defrosting condition Defrosting starts when either of the following 0 amp 2 D A and B are satisfied A The compressor keeps running for 40 minutes or more B The temperature difference of evaporator and room temperature meets one of the following Med fan High fan Low fan x Breeze TL def TM def TH def TA TS 2 Calculate from the end of latest defrost evaporator high temp Protection only closes outdoor fan with the compressor still running Add up to 90 minutes 32 Service manual 11 8 2 Defrosting time At condition CD If item B is satisfied before item A it would be regarded as severe frosting and the defrosting time is 10 minutes If item B is satisfied after item
19. et Valve protection cover Service manual 3 Dimension 3 1 Indoor unit Service manual 4 Specification MSF3 07GRN2 MSF307HRN2 MSF3 09CRN2 MSF3 00HRN2 Power supply Ph V Hz 1 220 240V 50Hz 1 220 240V 50Hz 1 220 240V 50Hz 1 220 240V 50Hz Cooling EE a oom w Heating BR KANE CN EC ES Starting current PG135X1C 4DZ2 PG135X1C 4DZ2 PG180X1C 4DZ3 PG180X1C 4DZ3 Brand TOSHIBA TOSHIBA TOSHIBA TOSHIBA 8086 8172 8086 8172 10800 10800 Input 765 785 765 785 Compressor Locked rotor Amp LRA 25 5 25 5 Thermal protector UP3SE0591 T71 UP3SE0591 T71 UP3SE0591 T61 UP3SE0591 T61 Refrigerant oil ml 400 400 400 400 wom wom mom rem med _ Indoor noise level Hi Mi Lo dB A 35 32 30 35 32 30 36 32 30 36 32 30 wwe YDK24 6T YDK24 6T YDK24 6T YDK24 6T Brand Welling Welling Welling Welling Outdoor fan Input motor oe CA j Refrigerant type R407C Liquid side Gas side 06 35 09 53 06 35 09 53 06 35 09 53 06 35 09 53 Refrigerant piping mt m o ttt sas KKK Operation temp 17 30 17 30 Application area z 10 14 10 14 14 21 14 21 Note The noise date is base on hemi anechoic chamber during actual operation these values are normally somewhat different as a result of ambient condition The above design and specifications are subject to change without prior notice for p
20. f outdoor unit frosts in heating operating At this time PRE DEF indicator illuminates Auto indicator This indicator flashes when the air conditioner is in AUTO operation ECON indicator This indicator illuminates while the air conditioner is in economic operation 36 Service manual 13 2 Troubleshooting For cooling mode Operation Timer Failure phenomenon lamp lamp Indoor fan speed has been out of control for over 1 minute Indoor room temp or evaporator sensor is open circuit or short circuit Over current protection of the compressor occurs 4 times EEROM error No over zero signal X Extinguish x Flash at 5Hz For heat pump mode Operation Timer Defrosting Failure phenomenon lamp lamp lamp X X gt _ Over current protection of the compressor occurs 4 times X ndoor fan speed has been out of control for over 1 minute emp sensor on indoor evaporator is open circuit or short circuit ndoor room temp sensor is open circuit or short circuit EEROM error On se X Extinguish x Flash at 5Hz sm o over zero signal O 37 Service manual 13 3 Diagnostic chart After energizing no indicator is lighted and the air conditioner can t be operated After energizing the air conditioner can not be operated Check if AC 220V power supply outputs to indoor PCB Yes Check if AC 220V exists at the primary coil of transformer I Indoor PCB is
21. itions However excludes the initial pull down stage 6 2 Heating operation Indoor air temp C DB 35 30 L Outdoor unit air temp C DB Note The chart is the result from the continuous operation under constant air temperature conditions However excludes the initial pull down stage Service manual 7 Schematic diagram and Wiring diagram Schematic diagram 7 1 WAS NI Nvd LI80d 97 LAOd NT YAMOT ESET MATT MI ACI TAL SI E OVASLZANTO R 6CH sol HEILA pr ANO A O 2 I XA ma WEN SIND o T m JWOD QVOT eAz OEE SSA IND 3 00 OEE PSA Dir p ACH GET OEE GPA 7 Hl ha OEE ava 007NIN 619 sI e D EHS dA OCE LPA gt L T i W AAS E YN LINO IN M EM noD 7 0 7 dNOD SH y NONE t c o tas n 821 01 T st NAS ie TIND 7 UNO N d dALS Ino BM T ESO SEE oe 5 Ste HEA Sh FE DEZA NV amo vicio Bim RE OY N LLL LOT xi 010 ONV NAV lt QQAV x eva td TWAZZNA dal MOVAGAHH dSNV gt HS T
22. l injury and failure of product Always insert the filter securely Clean the filter every two weeks or more often if necessary A dirty filter reduces the efficiency of the air conditioner and could cause product malfunction or damage e Do not insert hands or other object through air inlet or outlet while the product is operated There are sharp and moving parts that could cause personal injury Do not drink the water drained from the product It is not sanitary could cause serious health issues Use a firm stool or ladder when cleaning or maintaining the product Be careful and avoid personal injury O Replace the all batteries in the remote control with new ones of the same type Do not mix old and mew batteries or different types of batteries There is risk of fire or explosion Do not recharge or disassemble the batteries Do not dispose of batteries in a fire They may burn of explode e If the liquid from the batteries gets onto your skin or clothes wash it well with clean water Do not use the remote of the batteries have leaked The chemical in batteries could cause burns or other health hazards Service manual 2 Function Operation ON OFF by remote controller Sensing by room temperature Room temperature sensor Pipe temperature sensor Room temperature control Maintain the room temperature in accordance with the setting temperature Starting temperature control Indoor fan is delayed for
23. lare connection for gas leakage Purge the air from the system Set the 2 way valve to the open position and remove the cap from the 3 way valve s service port Using the hexagonal wrench to press the valve core pin discharge for three seconds and then wait for one minute Use torque wrench to tighten the service port cap to a torque of 1 8 kg m 18n m 14 Outdoor unit Set the 3 way valve to the opened position Mounted the valve stem nuts to the 2 way and 3 way valves Check for gas leakage At this time especially check for gas leakage from the 2 way and 3 way stem nuts and from the service port Caution If gas leakage is discovered in step 3 above take the following measures If the leaks stop when the piping connections are tightened further continue working from step 4 If the gas leaks do not stop when the connections are retightened repair the location of the leak discharge all of the gas through the service port and then recharge with the specified amount of gas from a gas cylinder Service manual 8 5 Pumping down Re installation 1 pm valve N A Close Procedure Confirm that both the 2 way and 3 way valves are set to the opened position Remove the valve stem caps and confirm that the valve stems are in the opened position Be sure to use a hexagonal wrench to operate the valve stems Operate the unit for 10 to 15 minutes Stop operation and wait for 3 minutes then connect the
24. lectric shock or fire e Stop operation and close the window in storm or hurricane If possible remove the product from the window before the hurricane arrives There is risk of property damage failure of product or electric shock Do not open the inlet grill of the product during operation Do not touch the electrostatic filter if Service manual the unit is so equipped There is risk of physical injury electric shock or product failure e When the product is soaked flooded or submerged contact an Authorized service center There is risk of fire or electric shock Be caution that water could not enter the product There is risk of fire electric shock or product damage e Ventilate the product from time to time when operating it together with a stove etc There is risk of fire or electric shock e Turn the main power off when cleaning or maintaining the product There is risk of electric shock e When the product is not be used for a long time disconnect the power supply plug or turn off the breaker There is risk of product damage or failure or unintended operation Take care to ensure that nobody could step on or fall onto the outdoor unit This could result in personal injury and product damage CAUTION Always check for gas refrigerant leakage after installation or repair of product Low refrigerant levels may cause failure of product e Install the drain hose to ensure that water is
25. m with liquid refrigerant If the system cannot be charge with the specified amount of refrigerant if can be charged with a little at a time approximately 150g each timeO while operating the air conditioner in the cooling cycle however one time is not sufficient wait approximately 1 minute and then repeat the procedure pumping down pin 4 Immediately disconnect the charge hose from the 3 way valve s service port K Stopping partway will allow the refrigerant to be discharged If the system has been charged with liquid refrigerant while operating the air conditioner turn off the air conditioner before disconnecting the hose 5 Mounted the valve stem caps and the service port Use torque wrench to tighten the service port cap to a torque of 18N m Be sure to check for gas leakage Service manual ressure tapie Note The pressure data is from 3 way valve the pressure data are pressure above atmosphere D Dry bulb temp W Wet bulb temp 9 1 MSF3 07CRN2 Cooling mode Outdoor temperature Dry bulb temp Indoor Pressure 25 C 30 C 35 C 40 45 50 Conditions 15 C W kg cm 24 C D on gt W S e r 19 C W kg cm 32 C D Pressure 23 C W kg cm 9 2 MSF3 07HRN2 Outdoor temperature Dry bulb temp Indoor Pressure 25 C 30 C 35 C 409C 45 C 50 Conditions 15 C W kg cm E W kg cm 19 W kg cm ESSI 73 7 8 8 4 9 2 10 1 23 W kg cm Indoor p
26. onditioner could fall with it causing property damage product failure and personal injury e Do not let the air conditioner run for a long time when the humidity is very high and a door or a 2 windows is left open Moisture may condense and wet or damage furniture e Take care to ensure that power cable could not be pulled out or damaged during operation There is risk of fire or electric shock Do not place anything on the power cable There is risk of fire or electric shock e Do not plug or unplug the power supply plug during operation There is risk of fire or electric shock Do not touch operation the product with wet hands There is risk of fire or electric shock O Do not place a heater or other appliance near the power cable There is risk of fire and electric shock e Do not allow water to run into electric parts It may cause fire failure of the product or electric shock Do not store or use flammable gas or combustible near the product There is risk of fire or failure of product e Do not use the product in a tightly closed space for a long time Oxygen deficiency could occur e When flammable gas leaks turn off the gas and open a window for ventilation before turn the product on Do not use the telephone or turn switches on or off There is risk of explosion or fire e If strange sounds or small or smoke comes from product Turn the breaker off or disconnect the power supply cable There is risk of e
27. r reselect when the set temp varies 33 Service manual 11 10 Force cooling function 11 10 1 Select forced cooling function with the forced cooling button or the switch 11 10 2 The compressor is unconditionally turned on after 30 minutes cooling operation whose fan mode is set as low the A C operates at the DRY mode with a set temp of 24 C 11 10 3 All protections of remote control cooling are available at forced cooling operation 11 10 4 Forced Auto function Select forced auto function with the forced auto button or the switch In forced auto status the A C operates at remote control mode with a set temp of 24 C 11 11 Sleep mode 11 11 1 The sleep function is available at cooling heating or auto mode 11 11 2 Cooling The set temperature rise 1 C per hour Two hours later the set temperature will maintain as a constant and the fan speed is kept at low speed The total time is 7 hours after 7 hours the unit stops 11 11 3 Heating The set temperature decrease 1 C per hour Two hours later the set temperature will maintain as a constant and the air circulation is kept at low speed Anti cold function takes precedence over all The total time is 7 hours after 7 hours the unit stops 11 11 4 Auto After an hour running under economic mode the set temp will rise 1 Cif it is under cooling mode the set temp will decrease 1 C if it is under heating mode the set temp will be changeless if it is under fan only mode the condition will be the sam
28. roduct improvement Service manual Power supply 220 240V 50HZ Moisture Removal L h 1 2 Starting current A 33 0 33 0 Indoor fan motor woe YDK20G 4E S YDK20G 4E S Pd m wp eee u gt m Refrigerant piping 06 35 012 7 I Note The noise date is base on hemi anechoic chamber during actual operation these values are normally somewhat different as a result of ambient condition The above design and specifications are subject to change without prior notice for product improvement 7 Service manual 5 Refrigerant cycle diagram Cooling only LIQUID SIDE CAPILLARY TUBE HEAT EXCHANGE EVAPORATOR HEAT EXCHANGE CONDENSER PA gt 4 GAS SIDE COMPRESSOR gt Heat pump mode INDOOR UNIT OUTDOOR UNIT m CHECK VALVE LIQUID SIDE Heating Model onl aa Ea aj nod e 2 WAY VALVE m HRK Y 1 e sk WAY VALVE 9 lt REVERSING SWAT VA ACCUMU VALVE LATOR de Heating Model Only COMPRESSOR COOLING HEATING CAPILLARY TUBE rn EXCHANGE EVAPORATOR CONDENSER GASSDE lt p 7 E Service manual 6 Operation limits 6 1 Cooling operation Outdoor unit air temp C DB Cooling 5 10 15 20 25 30 35 40 Indoor air temp C DB Note The chart is the result from the continuous operation under constant air temperature cond
29. tting Fan Speed temperature Anti cold wind from Setting Fan Speed to Breeze temperature TE4 Anti cold wind from Breeze to Fan Off temperature TES Evaporator low temperature protection entering temperature TE6 Evaporator low temperature protection restoring temperature TE7 Evaporator high temperature protection compressor off temperature TE8 Evaporator high temperature protection fan off temperature TE9 Evaporator high temperature protection restoring temperature 11 2 Function Remote receiving Testing and forced running Position set for indoor unit wind vane LED displaying and alarm On or off Timer Protection for the compressor Current protection High temperature protection of indoor heat exchanger at heating mode Auto defrosting and heating recovery at heating mode Anti cold air at heating mode Anti frozen at cooling mode 11 3 Protection 11 3 1 3 minutes delay at restart for compressor 11 3 2 Sensor protection at open circuit and breaking disconnection 11 3 3 Fan Speed is out of control When Indoor Fan Speed is too high higher than 2100RPM or too low lower than 300RPM for 50 seconds the unit stops and LED displays failure information and can t returns to normal operation automatically 11 3 4 Cross Zero signal error warning If there is no Cross Zero signals in 4 minutes the unit stops and LED displays failure information and can t returns to normal operation automatically 28 Service manual 11
30. vice manual 8 8 Evacuation LN Liquid side gt Outdoor unit a 7 rd 2 way valv N B T ino rd 3 way valve N E Q omm Vacuum pump Procedure Connect the vacuum pump to the charge set s centre hose Evacuation for approximately one hour Confirm that the gauge needle has moved toward 0 1 Mpa 76 cmHg vacuum of 4 mmHg or less Close the valve Low side on the charge set turn off the vacuum pump and confirm that the gauge needle does not move approximately 5 minutes after turning off the vacuum pump Disconnect the charge hose from the vacuum pump Vacuum pump oil if the vacuum pump oil becomes dirty or depleted replenish as needle 18 Service manual 8 9 Gas charging F m ak A z Indoor unit y y Liquid side nem L Outdoor unit m h gi jf 2 way za i K nn p JU Gas side N es valve N i i Open ATEN gt es A i Charging cylinder Procedure 1 Connect the charge hose to the charging cylinder Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder 2 Purge the air from the charge hose Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air be careful of the liquid refrigerant 3 Open the valves Low side on the charge set and charge the syste
31. voltage of power supply is too low less than 187V Outdoor unit fault such as the compressor Power supply fault 13 8 Operation lamp on and Timer lamp flashes EEROM error indoor PCB is defective 13 9 Operation lamp flashes Timer lamp flashes This is alarm signal when the main chip can t detect over zero signal When such failure occurs the main control board must have fault 40 Service manual 14 Characteristic of temperature sensor Resistance KO Temp C Resistance KO 14 6181 44 4 3874 s sz i 198 as 421 sexo 1 132681 o 40459 12 6451 7 38897 s asin a o 37348 46 5725 11 5 49 3 5896 44 23 4 10 9731 50 3 451 IN 3 41 5878 24 10 4736 51 3 3185 2 39 8239 25 10 52 3 1918 1 37 1988 26 9 5507 53 3 0707 0 35 2024 27 9 1245 54 2 959 1 33 3269 28 8 198 55 2 8442 2 31 5635 29 8 3357 56 2 1382 3 29 9058 30 7 9708 57 2 6368 4 28 3459 31 1 6241 58 2 5397 5 26 8778 32 1 2946 59 2 4468 6 25 4954 33 6 9814 60 2 3971 7 24 1932 34 6 6835 61 2 2725 8 22 5662 35 6 4002 62 2 1907 9 21 8094 36 6 1306 63 2 1124 10 20 7184 37 5 8736 64 2 0373 11 19 6891 38 5 6296 65 1 9653 FRA 41
32. way valve Check the gas leakage Check the flare connections for gas leakage Discharge the refrigerant Close the valve on the charging cylinder and discharge the refrigerant until the gauge indicate 0 3 to 0 5 Mpa Disconnect the charge set and the charging cylinder and set the 2 way and 3 way valves to the open position Be sure to use a hexagonal wrench to operate the valve stems Mount the valve stems nuts and the service port cap Be sure to use a torque wrench to tighten the service port cap to a torque 18N m Be sure to check the gas leakage 16 Service manual 8 7 Balance refrigerant of the 2 way 3 way valves Liquid side Outdoor unit pa i ay valve x Procedure Confirm that both the 2 way and 3 way valves are set to the open position Connect the charge set to the 3 way valve s service port Leave the valve on the charge set closed Connect the charge hose with the push pin to the service port Open the valves Low side on the charge set and discharge the refrigerant until the gauge indicates 0 05 to O 1 Mpa If there is no air in the refrigeration cycle the pressure when the air conditioner is not running is higher than 0 1Mpa discharge the refrigerant until the gauge indicates 0 05 to 0 1 Mpa If this is the case it will not be necessary to apply a evacuation Discharge the refrigeration gradually if it is discharged too suddenly the refrigeration oil sill be discharged 17 Ser
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