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SERVICE MANUAL AE-X2M14LR - RB Climatizzatori Sharp Milano

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2. L Q 9 pir Control i Ei HC Vs Vo RL IC i IGBT L1 L2 ehm 1 P 1 I JC control l AM o 9 J BCN13 Active Filter Circuit 3 Active Filter Driving Electronics Circuit At the operation of compressor the microcomputer IC1 as the 50th pin gets will turn the transistor Q4 ON through the transistor By this 18V is supplied to the 3rd pin of connector BCN13 of the Active Filter and the Active Filter will be turned ON 4 Protection Circuit of Active Filter In order to prevent from the destruction of Active Filter due to the excessive over output voltage of Active Filter the Active Filter will be turned OFF immediately at the abnormal output voltage by monitoring the output voltage At the same time the operation of compressor will be stopped Detec tion circuit of the abnormal voltage detects the abnormal voltage by inputting the output voltage of Active Filter to the 4th pin of comparator IC 109 at the divided voltage by the resistors R31 R32 and R33 and comparing with reference voltage When the output voltage of Active Filter reaches 450V or higher the 4th pin of IC5 will be higher than the reference voltage at the 5th pin the output of comparator will be reversed H gt L the L signal will be entered at the 52nd pin of mic
3. 67 19 67 2 621 645 151 AEX2M14LR 3 CAPACITY TABLE Recommended Combination Outdoor Units Indoor Units AY XPM7 9 12FR GS XPM9 12 GS XPM7 9 12FR 12 7 9 9 AE X2M14LR 9 7 7 7 COOLING CAPACITY TABLE Operating Combination of Cooling Capacity kW Running Current A Power Consumption W Status Indoor Units A B A B RATING Min Max RATING Min Max RATING Min Max 12 09 2 2 1 6 3 8 1 8 4 3 4 1 1 6 5 3 900 350 1160 12 07 2 4 1 4 3 8 1 8 4 3 4 1 1 6 5 3 900 350 1160 2 Room 09 09 1 9 1 9 3 8 1 8 4 3 4 1 1 6 5 3 900 350 1160 09 07 2 1 1 7 3 8 1 8 4 3 4 1 1 6 5 3 900 350 1160 07 07 1 9 1 9 3 8 1 8 4 3 4 1 1 6 5 3 900 350 1160 12 OFF 9 4 3 4 1 4 4 0 4 2 1 5 6 0 900 320 1320 1 Room 09 OFF 2 6 OFF 2 6 1 4 3 3 3 0 1 5 4 2 660 320 920 07 OFF 2 0 OFF 2 0 1 4 2 7 2 3 1 5 3 2 510 320 700 HEATING CAPACITY TABLE Operating Combination of Heating Capacity kW Running Current A Power Consumption W Status Indoor Units A B A B RATING Min Max RATING Min Max RATING Min Max 12 09 2 5 1 9 4 4 1 9 5 4 6 6 1 7 5 9 950 370 1300 12 07 2 8 1 6 4 4 1 9 5 4 6 6 1 7 5 9 950 370 1300 09
4. 9 Remove the 13 screws fixing the rear cabinet then remove it 1 screw is at the left 5 screws are at the right 7 screws are at the rear AEX2M14LR 13 Remove the 3 screws fixing the coil for PFC then remove it How to disassemble the control box assembly NOTE When the coil re install silicone grease must be paste to the back face of the coil 16 Cut the 3 wire fixing bands Disconnect the 7 connectors CN6 CN15 CN9A CN16 CN17 CN5 CN101 IPM Lift up the Control Board Unit PWB and remove it Control board unit pw ee Install this SHAORT CIRCUIT CONNECTOR in a new CONTROL PWB at CONTROL PWB exchange 15 Remove the 6 thermistors on copper tube NOTE Caution to position when re installing 17 Disconnect the 2 terminals Blue and Brown And Remove the 3 screws fixing the terminal board angle assembly TH8 BROWN then turn it inside out Just on the tilted pipe TH7 WHITE Just on the horizontal pipe TH6 BLUE Just on the horizontal pipe Blue Brown TH3 GREEN BLACK er Ya all Sa SS TH2 ORANGE Refer to page 5 5 Mounting position of thermistors and expansion valves AEX2M14LR 18 Disconnect the 5 terminals T1 2 4 6 MRY1 and
5. AEX2M14LR 2 FUNCTIONS 1 FREQUENCY CONTROL 1 AC current peak control Cooling mode 13 6A Heating mode 13 6A 2 Prevention control of outdoor heat exchanger overheating If the temperature of the outdoor heat exchanger exceeds the over heating prevention line 1 or 2 during cooling the operating fre quency is lowered by approximately 5 to 15Hz After that the frequency is lowered approximately 5Hz once every 60 seconds or approximately 15Hz once every 120 seconds When the tempera ture of the outdoor heat exchanger goes below the overheating prevention clear line the frequency is raised by approximately 5Hz once every 60 seconds and normal operation is restored If the fre quency is lowered to minimum frequency without the temperature of the outdoor heat exchanger decreasing and this condition lasts for 1 minute the compressor will be stopped Overheating Prevention line 1 55 C Lower 5Hz once every 60 seconds Overheating Prevention line 2 57 Lower 15Hz once every 120 seconds Overheating Prevention clear line 54 C 3 Prevention control of compressor overheating If the temperature of the compressor exceeds approximately 108 C the operating frequency is lowered approximately 5Hz After that the frequency is lowered approximately 5Hz once every 60 seconds When the compressor temperature drops below approxi mately 108 C the frequency is raised
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10. 2 520 5 8 SNES 64 v9 v Phot ped NRG ASZ ASZ i 33081 MZZL z 98 098 858 961 te 3 z a sium 5 Syelu zio ra 209 600 Al GEL The e val D i DOPODDE L NO 3 EEED E s Ine anap snis gt d ny p yze io vs Mty L 039 199 m rj Sola Lay t 5 20 7018 poet O17 34 A s E A1ddns uaMod O00 37009 Ly 44 019 ES Ayup megas ted 5 AOSZ 3 i 3 5 gt r S NR ge ea RSS a az WVYOVIG 98 092 HIivLIN 2X a3Vv AEX2M14LR CHAPTER 2 EXPLANATION OF CIRCUIT AND OPERATION 1 BLOCK DIAGARM 1 20 ar Fuse Fuse Power supply circuit Smoothing circuit Active filter circuit Filter circuit gt CPU oscillator circuit Y DC power supply circuit lt DC over voltage detection cir
11. 6 4 2 0 2 4 6 8 10 12 Outside air temp C 3 0 24 26 28 30 32 34 36 38 40 42 44 Outside air temp C At Cooling for AY XPM9FR for AE X2M14LR 2 REFRIGERANT PIPE INSTALLATION WORKS 1 Piping Max piping length A 25m INDOOR UNIT Min piping length A 3m Max total piping length of all unit 40m Max level difference B OUTDOOR f total piping length exceeds 25m UNIT add 15g of refrigerant per 1m When the outdoor unit is placed at a higher level than the indoor units pro vide a trap near the hose s lead in port oe UJ J VA N TRAP At Heating for AY XPM9FR for AE X2M14LR 2 Air removing Use an adapter for preventing vacuum pump oil from flowing back to the gauge manifold hose ON OFF operation of the vacuum pump should be made by the adapter switch 1 Remove both valve shaft caps of the stop valves 2 Remove the service port cap of the stop valve gas side 3 Connect the gauge manifold hose to the service port and the vac uum pump Be sure that the hose end to be connected to the ser vice port has a valve core pusher 4 Open the gauge manifold valve and operate the vacuum pump for 10 15 minutes Make sure the compound gauge reads 0 1MPa 76cmHg 5 Close the gauge manifold valve 6 Turn off the vacuum pump 7 Fully open the stop valve liquid side with hexagon socket screw
12. X 5 times Open circuit of the thermistor SIGNAL 5 o X 6 times Power module IPM abnormality 9 X 7 times Abnormal AC current 10 o 6 5 4 3 21 61514131211 1 19 X 8 times Abnormal wire check 7 i T X 9 times Cycle temperature error INDOOR UNIT B nr CN12A CN12B CNBC SUCTION 8 T I UNIT 2 _ _ _ _ 9 _ _ 9 9 X 11 times Rotation error of the fan motor AWAY CONTROL BOARD UNIT 10 0 X 12 times Thermal fuse aor ri terminal board H VALVE 1119 X 13 times otation error of the compressor NEUTRAL HIGH VOLTAGE iit 12 9 X 14 times Power factor module AF1 or clock error The microcomputer s GND Ine which i3 Lioz 0207 The 2 LEDs of the display board shown at left wil all flash SIGNAL control the thermistor etc share the synchronously en ee HEN For indication patterns No 1 No 2 and No 4 only the LED the control components a raz 3L corresponding with ite abnorma unit mil flash result in electrical shock hazard shown above the or the normal unit will flash in the Do not earth osilloscope etc during TH Wi slow flashing cycle as it may result WIRE CHECK PUMP DOWN LED DIAGNOSIS ON OUTDOOR UNIT RELAY BOARD UNIT LED turns on L iB O Slow flashing 1 time for 1 second O Quick flashing 3 times for 1 second Example No 3 Overheat error Compressor Power module on POWER FUSES FUSES 9 o 9 POWER SUP
13. 50Hz Current waveform Before Current waveform Active Filter 2 Active Filter Voltage Raise Circuit The IGBT in the figure below is the switching transistor of the Active Filter By adding ON signal to the gate of IGBT from the control IC IGBT turns ON and the collector current Ic flows This current flows from the side of the diode bridge DB to the Choke coil the side of the diode bridge DB through IGBT from the Choke coil L At this time energy is stored in the choke coil L Next when gate signal of IGBT turned OFF IGBT will be turned OFF and the energy stored in L during the ON time of IGBT will be discharged through the diode D electrolytic capacitor C load primary side and the side of DB Assuming the input voltage of Active Filter voltage between and of DB as Ei the output voltage voltage at the both ends of smooth capacitor as Vo switching cycle of IGBT as T and ON time of IGBT as ton the voltage between collector emitter of IGBT Vs will be as follows Vs 0 during ON of IGBT ton Vs Vo during OFF of IGBT T ton Here assuming no loss in L and IGBT average value of Vs turns equal to Ei Ei T ton T x Vo Therefore Vo T T ton x Ei As ton is a smaller value than T output voltage Vo will be higher than input voltage Ei AEX2M14LR
14. 6 After 5 10 minutes fully close the stop valve liquid side by turn ing the hexagon socket screw key clockwise 7 After 2 3 minutes immediately close the stop valve gas side fully 8 Press the PUMP DOWN SWITCH SW1 on the display board unit for 5 seconds or more The operation of indoor outdoor unit will stop 9 Replace the service port cap and both valve shaft caps tightly NOTE Wait more than 90 seconds after finishing pump down and turn off the circuit breaker off Stop valve gas side Stop valve liquid side L WIRE CHECK PUMP DOWN CAUTION Execute the pump down operation using with PUMP DOWN SWITCH The compressor might stop on the way if pump down is operated while cooling operation mode with out PUMP DOWN SWITCH 4 MISWIRING CHECK Miswiring check must be performed after installation reinstallation and service This multi type air conditioner is designed with a WIRE CHECK SWITCH on the outdoor unit and miswiring of unit to unit wir ing will be self corrected by microcomputer Miswiring check may not be performed when the outdoor temperature is below 5 C 1 Complete the unit to unit wiring piping and perform the air remov ing of the pipes Turn the electrical circuit breaker ON Before turn ing the circuit breaker ON make sure no one is working on the indoor units installation Electrical shock or injury may occur Check that all LED 2 on
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16. 14 Active Filter start up when in operation without stop None Yes Yes source clock can not be detected for 1 con clock error operation ping tinuous second at startup z Operation stops if there is no input of rotation When outdoor 15 Pc unit Dean pulse signal from outdoor unit fan motorfor unit fan is in Operation OFF or Yes X1 Yes Yes 30 seconds operation 7 Automatically restarts 16 DC compressor Operation stops if rotation of compressor is During compres after safety time 180 8 times Yes Yes rotation error abnormal sor operation sec IPM overheat pre 5 Automatically restarts vention control The compressor stops if the temperature of During compres 17 5 after safety time 180 No limit No No IPM high tempera Heat sink exceeds 90 sor operation sec ture error 18 Thermal fuse error etna ies the outdoor terminal Operation OFF 1times Yes Yes board below x1 The outdoor unit restarts four times before the indoor unit error is displayed complete shutdown 2 TROUBLESHOOTING GUIDE 1 SELF DIAGNOS IS FUNCTION AND DISPLAY MODE 1 To call out the content of the self diagnosis memory hold down the emergency operation button for more than five seconds when the indoor unit is not operating a According to the content of the self diagnosis memory the Operation LED main category and the Plasmacluster lon LEDs sub cat
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18. 09 22 22 4 4 1 9 5 4 6 6 1 7 5 9 950 370 1300 09 07 2 5 1 9 4 4 1 9 5 4 6 6 1 7 5 9 950 370 1300 07 07 2 2 2 2 4 4 1 9 5 4 6 6 1 7 5 9 950 370 1300 12 OFF 3 9 OFF 3 9 1 2 4 6 5 2 1 5 7 2 1140 320 1570 1 Room 09 OFF 3 0 OFF 3 0 1 2 4 2 3 8 1 5 6 4 830 330 1400 07 OFF 2 4 OFF 2 4 1 2 3 3 3 1 1 5 4 6 680 320 1010 4 ELECTRICAL PARTS Compressor DA130A1F 28F Hermetically sealed DC twin rotary Outdoor fan motor MLB051 Fuse 1 101 QFS GA065JBZZ 20A 250V Fuse 6 QFS GA064JBZZ 1A 250V Fuse 3 4 QFS GA062JBZZ 3 15A 250V Fuse 5 QFS GA063JBZZ 2A 250V 2 14 5 WIRING DIAGRAMS WIRING DIAGRAM UNIT in case that FUSE101 protector has been fused the voltage is kept high at C9 C10 BR BROWN WH WHITE YELLOW TERMINAL BOARD ee NO LED indication pattern Abnormal comments UNIT A eg Normal TE 8 1 Abnormal signal line zEEE Sz 2 0 X1 times Short circuit of the thermistor NEUTRAL NF TS 3 2 times Overheat error Compressor Power module LIVE 3 CNG 4
19. 3 connectors 21 Remove the 2 screws fixing the heat sink cover then remove it CN14 CN2 CN13 Active Filter 23 Remove the each of 4 screws fixing the heat sink NOTE Confirm two kinds of spacer put in 4 holes have clung Seal the 4 burring holes with silicone sealer before reinstalling 20 Disconnect 2 connectors CN1 CN9 Then lift up the relay board unit PWB and remove it AEX2M14LR 24 Disconnect the 5 terminals TP TU TV TW TN and 1 connector 25 Disconnect the 6 terminals P lo L1 12 and 1 connector CN114 on the IPM PWB And Remove the 2 screws fixing the CN13 on the active filter And Remove the 2 screws fixing the IPM PWB and remove it power module and remove it NOTE When the IPM PWB re install silicone grease must be paste NOTE When the active filter re install silicone grease must be paste to the back face of the IPM to the back face of the Active Filter Active filter or Power transistor module IPM NG CAUTION Fix the connector of the power module securely 2 Mounting position of thermistors and expansion valves Mounting position of thermistors and expansion valves are shown below Thermistor Check the cord color of thermistor before mounting Thermistor Suction Suction A Suction B Suction C are mounted on GAS side pipes Thermistor Heat exchanger is mounted on LIQUID side pipe Expansion valve Check the labels before connecting to the Control
20. 6 6 1 Fan Cross flow fan Propeller fan Connections Refrigerant coupling Flare type Refrigerant tube size Gas Liquid 3 8 1 4 Maximum length per unit m 25 Maximum length total m 40 Maximum charge less length m 25 Maximum height difference m 10 Additional Charge per m g 15 Drain joint mm Connected part O D 616 Others Safety device Compressor Thermistor Fan motors Thermal fuse indoor unit Thermal protector Out door unit Fuse Micro computer control Air filters Anti mold polypropylene net of injection type Washable Net dimensions Width mm 790 950 890560 Height mm 278 645 Depth mm 198 323 290433 Net weight kg 10 51 NOTE The condition of star xx marked item are 1905151 Representative connection 2 14 2 EXTERNAL DIMENSION un ARA ERR he 5 940 890 50 5 ERR ERR
21. 65 TSPC G699 JBRZ AK N Name label 1 66 PSEL C378 JBEZ AB Insulator 1 67 PSEL C379 JBEZ AB Insulator 1 68 LSUB A038JBWZ AN Flare cup sub S 1 69 PSEL C382JBEZ AC Seal D 1 71 CFTA A339 JBKZ AY Control cover assembly 1 73 PSEL C938 JBEZ AK Insulator 1 76 TLAB C511 JBRA AC Label 1 77 TLAB E787 JBEZ AK EU energy label 1 78 PSPF B073JBEZ AK Compressoor cover C2 1 83 PSEL D274JBEZ AG Accum cushion CONTROL BOX PARTS 2 1 DBOX A079 JBYZ AS Cont box spot assembly 2 2 DSGY EO095JBKZ CB N Control board unit 2 3 LANG A451 JBWZ AE Cont box angle 2 4 LANG A458 JBWZ AR Terminal board ang 2 5 LBNDKA1 54 JBWZ AN Capacitor band 2 6 LHLD 0261 JBMO AB Cord holder 2 7 LPLTPA016JBFZ AG Pwb support A 3 AEX2M14LR PRICE NEW PART NO PARTS CODE RANK MARK RANK DESCRIPTION 1 OUTDOOR UNIT 2 8 LPLTPA017JBFZ AG Pwb support B 2 9 LPLTPA018JBFZ AG Heatsink support 2 10 LPLTPA027JBFZ AN Pwb support C 2 11 PCOV A601 JBWZ AQ Heatsink cover 2 12 PSEL C376JBEZ AC Insulator 2 13 PRDAFA215JBEZ BE Haet sink 2 14 PRDAFA216JBEZ BC Heat sink 2 15 PSEL C037JBEZ AE Insulator 2 16 PSEL C074JBEZ AC Insulator 2 17 PSEL C374JBEZ AC Seal 2 18 PSHE A195JBEZ AH Angle sheet 2 19 PSHE A196JBEZ AE
22. Board Unit Thermistor Suction Black m Label N 4 Expansion valve B Thermistor Suction B White Label METS Expansion valve ANIN I Thermistor Suction A Blue iE Thermistor Heat exchanger Orange I Expansion valve Connector label CAUTION Mismounting and misconnecting will cause error or failure AEX2M14LR MEMO AEX2M14LR SHARP PARTS GUIDE MULITI SPLIT TYPE ROOM AIR CONDITIONERS OUTDOOR UNIT MODEL AE X2M14LR In the interests of user safety Required by safety regulations in some countries the set should be restored to its original condition and only parts identical to those specified should be used CONTENTS 1 OUTDOOR UNIT 4 PACKING PARTS 2 CONTROL BOARD UNIT PARTS INDEX 3 IPM30A BOARD PARTS Parts marked with A are important for maintaining the safety of the set Be sure to replace these parts with specified ones for maintaining the safety and performance of the set This document has been published to be used SHARP CORPORATION fo after sales service only The contents are subject to change without noti
23. Cord holder sheet 2 20 PSPA A064JBEO AA Spacer 2 21 PSPA A065JBEO AA Spacer 2 22 PSPA A150JBZZ AF Spacer 2 23 DSGY C347 JBKZ BV IPM30A board assembly 2 26 QTANZA0 21 JBZZ AN Terminal board 4P 2 27 QTANZA044 JBZZ AU Terminal board 2 28 QW i ZA120 JBZZ AU Compressor cord for compressor 2 46 PSHE A273JBEZ AF Protection sheet for display PWB 2 62 RC AZA046 JBEO BE Electrolytic capacitor C9 2 63 RC EZA250JBZZ BG Electrolytic capacitor C10 2 65 VHDD25VB60 1 AN Diode bridge DB1 2 66 RH HXA096JBZZ AZ Thermistor TH6 TH8 2 67 RH HXA095JBZZ BC Thermistor TH1 TH4 2 80 RTHM A022JBEO AN Thermistor TH1 2 83 TLAB B777JBRZ AC Caution label 2 84 TLAB D246 JBRZ AF Label 2 85 TLAB D243JBRZ AM Label 2 93 RH TXA008 JBZZ BR Active filter 2 98 PSEL C377JBEZ AC Insulator 2 99 RHOG A169 JBEO AK Thermistor HEATSINK CYCLE PARTS 3 1 CCiL A158JBKZ AX Coil 3 2 DVLV A952JBKZ AU Flare union unit 3S 3 3 DVLV A953JBKZ AU Flare union unit 3S 3 4 DVLV A954JBKZ AU Flare union unit 2S 3 5 DVLV A668JBKZ AZ Sway valve unit 3 6 DVLV A669JBKZ AW 3way valve unit 3 7 GLEG A029 JBEO AE Comp cushion rubber 3 8 LBSHCA005JBEO AA Terminal bushing 3 9 LX NZA250JBEZ AE Flare nut 3 10 LX NZA251 JBEZ AG Flare nut 3 11 PACU A052JBEZ BH N Accumulator 3 12 PCAP A083JBEZ AC Nut bonnet 3 13 PCAP A084JBEZ AC Nut bonnet 3 14 PCMPRA5 24 JBEZ CM Compressor 3 15 PCON A61 1 JBPZ CH Condenser 3 16 PCOV
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25. approximately 5Hz once every 60 seconds and normal operation is restored If the fre quency is lowered to minimum frequency without the temperature of the compressor decreasing and this condition lasts for 1 minute the compressor will be stopped 4 Prevention control of indoor heat exchanger overheating Two minutes after room several decrease If the temperature of any of indoor heat exchangers exceeds the overheating prevention line 1 or 2 during heating the operating frequency is lowered to mini mum frequency When the temperature of all of indoor heat exchangers go below the overheating prevention line 1 the fre quency is raised by approximately 5Hz once every 60 seconds and normal operation is restored If the condition that the frequency is minimum lasts for 2 minutes the compressor will be stopped when normal gt If the temperature of any of indoor heat exchangers exceeds the over heating prevention line 1 or 2 during heating the operating frequency is lowered by approximately 5 to 15Hz After that the frequency is low ered approximately 5Hz once every 60 seconds or approximately 15Hz once every 90 seconds When the temperature of all of indoor heat exchangers go below the overheating prevention line 1 the fre quency is raised by approximately 5Hz once every 60 seconds and normal operation is restored If the condition that the frequency is min imum lasts for 2 minutes the compressor will be stopped Ove
26. diagnosis mode No Check the failure with the outdoor unit Y Check that the power between I the terminal board N and 1 TO of the indoor unit is 230V 50Hz Y Check the pressure I Repair the wiring between the units 04 U09 au Josseduio ay vejd y oN ASL 56 eDeyo y 129009 1 H Nel ewe si JosseJduioo y L uej 1 oN 0 10 0UJ uey JO AS eu 2940 pue us w q A N A d S A nIA eouejsiseJ Y S 14v lnpoui d HA 1J M0d 34 eae dey 9NO 10euu05 ay S A Bu dd 4 sanjea eoue 91 99 491 56 391661 ay JO uoeo S 1 i 0 L 3V einpou 10 024 112 12w40 89A b uuoo 984 JOMOd 991 JO jeur OU jueuno u Bulpuim M N M d 99 Y O
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28. receives a request from one or more indoor units after 90 seconds have passed it will be turned on and the expansion valve corresponding to the requesting indoor unit will be opened When the indoor unit of a room requests for the cooling operation to the outdoor unit and it runs responding to the request requests for the heating can t be accepted if the indoor units in other rooms send individual requests If the indoor unit in another room sends a request for the heating operation the operation lamp and timer lamp of the indoor unit in that room start flashing in turn to inform that the unit is in the standby mode If the operation in one room is stopped while the indoor unit in another room is in the stand by mode the operation mode requested by the indoor unit which is now in the stand by mode will be accepted At this time the compressor will be temporarily stopped to switch the four way valve and restart after 90 seconds During the cooling or dry operation the expansion valve corresponding to the indoor unit that is not running is closed Therefore the refrigerant will not flow into those units However if the heating operation is in progress it is possible that it flows into indoor units which are out of operation depending on the cycle conditions As a result the indoor exchanger may be heated up even if it is not activated This is not abnormal When the operations in all rooms are stopped the compressor is off and the expansion valve
29. system indepen gt lt y gt lt dent the location of rotor detecting the phase differ ence between driving voltage phase and line current 8 phase flowing in motor coil and controls the modulation E rate data to get the phase difference at the best effi iii EN Difference of current ciency Best timing F and voltage peak Voltage Current phase difference Concept chart of the current phase difference control 5 DC Current Detection Sensor Circuit Control of current phase difference is made by reading in the phase difference generated at the both edges of shunt registor R100 by the compres sor electrifying current on the PWB through the Op amp ICQ to the microcomputer This is a control to modulate up to the phase with the best effi ciency by comparing the phase of this input current so called compressor electrifying current with the compressor driving voltage In the case that phase difference between motor voltage and current is large current delay is large the control will be made by lowering the compressor modulation rate data compressor effective value IPM FUSE 101 T S 250V 20A C121 KA KA Fe 630 9 I9 2 o M TW o CIN z Wy RUNS tae R100 T000p ZD101 m Inverter current detection circuit CHAPTER 3 FUNCTION AND OPERATION PROTE
30. terminals of the low voltage circuits control circuits for microcomputer and thermistors and drive circuits for expansion valve and relays on the control printed circuit board PWB are connected Do not touch the cabinet or bring metal parts into contact with the cabinet to the compressor drive power supply 370 VDC negative terminal Therefore exercise most caution to prevent electric shock If a measuring instrument used for the test is grounded its chassis ground has the same electric potential as the 0 V probe Since non insulated circuits have the following voltage potential difference from the ground connection of the grounding wire results in a short circuit between the 0 V line and the ground thus allowing an excessive cur rent to flow to the tester to cause damage If the sheaths of the thermistor lead wires or expansion valve lead wires inside the outdoor unit become damaged due to pinching by the front panel or other metal parts or contacting a pipe a high voltage can flow and destroy the circuits To prevent these problems carefully conduct assembly work Reason The oscilloscope chassis ground has the same electric potential as the 0 V probe The entire electronic control section of the outdoor unit has a voltage potential difference from the ground When the oscilloscope is setup the 0 V line and the ground voltage ground will be short circuited resulting in an excessive current flow to cause dama
31. the display board unit are flashing synchronously in a slow one flash per second cycle If either one or more of all LED is are kept lighted on check and correct the M wrong wirings among N 1 2 terminals so that all LED will flash slowly showing normal condition Press the WIRE CHECK SWITCH SW2 on the display board unit for 5 seconds or more The flashing of all LED will change Mis wir ing mis piping check will start and the indoor and outdoor units will start operating The red operation lamp on the indoor unit will flash and three BEEP will be emitted Miswiring of unit to unit wir ing will be self corrected 3 E Wrong piping works cannot be corrected and will be detected as an error When an error is detected during checking all LED will show triple flash for eight times The indoor and outdoor operation will stop Turn the circuit breaker OFF and check and correct the miswiring mispiping After correction return to step 1 and repeat the miswiring mispiping check again If error is still detected or other types of LED signal should be indicated please contact a ser vice technician Refer to wiring diagram attached inside the out door unit cabinet for self diagnosis signal a All LED LED1 2 will flash synchronously in a slow one flash per second cycle when miswiring mispiping check is completed with no error detection 3 6 minutes and the operation of indoor and outdoor units will
32. 0562JBE0 AD Terminal cover 3 17 PMUF A091 JBEZ AZ Muffler 3 18 PVLVRA040JBEZ BM Expansion valve 3 19 PVLVXA081 JBEZ BB Reverse valve 3 20 RMOTSA038 JBZZ BD N Coil 3 21 FCMPRA244JBKZ CM Compressor assembly 3 7 3 8 3 14 3 16 ACCESSORY PARTS 4 1 LHLD A459 JBEZ AD Holder 4 2 LPFT A029JBFO AD Drain joint 4 3 TiNS B240JBRZ AK N Installation manual English Italian 4 4 Ti NS B241 JBRZ AK N Installation manual French Spanish 4 5 LBND A046 JBEO AE Wire fixing band 4 6 Ti NS B242JBRZ AK N Installation manual Portuguese SCREWS AND NUTS 6 1 LX BZA434JBEZ AR Special screw 6 2 LX BZA075JBEO AA Special screw for earth 6 3 LX BZA078JBEZ AB Special screw 6 4 LX BZA140JBE0 AB Special screw 6 5 LX BZA364JBEZ AC Special screw 6 6 LX HZA007 JBEZ AE Special screw 6 7 LX NZA319JBEZ AE Special nut 6 8 LX NZA313JBEZ AE Special nut 6 9 XBPS740P14JS0 AB Machine screw 6 10 XCTS740P10000 AC Tapping screw 6 11 XBPS740P20J00 AF Machine screw 6 12 XBPS730P10000 AF Machine screw 6 13 LX BZA140JBEO AB Special screw 6 14 XTTWW40P16000 AC Special screw AEX2M14LR PRICE NEW PART NO PARTS CODE RANK MARK RANK DESCRIPTION 2 CONTROL BOARD UNIT PARTS 2 2 DS8GY E095 JBKZ CB N Control board unit 2 2 1 QFS GA065JBZZ BA Fuse FUSE1 101 2 2 2 QFS GA062JB
33. 1 C DB depending on conditions 2 14 3 ACTIVE FILTER CIRCUIT This circuit uses Active Filter Module and IPM as the figure below for the high efficiency operation of compressor Choke coil Active Filter ae uh Rectification circuit gt Noise filter r compressor circuit gt B Bae T _ Positional detection Voltage raise signal Sine wave current g 9 ON OFF Compressor Control L Driving signal source IC1 1 Active Filter In the case the direct current is obtained by the diode bridge and smooth capacitor from the commercial power source the current wave shape will be the pulse shape at the peak of the voltage wave shape as shown in the figure below For this reason the harmonic current will be generated and at the same time the power factor will be deteriorated While monitoring the AC input voltage in the control circuit in order to be the same phase and wave shape as this voltage wave shape IGBT is made ON OFF by the carrier frequency of approximately 20 kHz By adoption of this Active Filter the current wave shape can be made to the sine wave synchronized to the commercial power source and the power factor can be made to almost 99 As a result of this reactor can be disused Active Filter works for the improvement of power factor and as the countermeasures for the harmonic current Power supply voltage
34. 195JBEZ 1 2 18 AH LPLTPAOiTJBFZ 1 028 AG PSHE A196JBEZ 1 2 19 AE LPLTPAO18JBFZ 1ED g AG PSHE A273JBEZ 1 2 46 AF LPLTPA027JBFZ 1 2 10 AN PSKR A353JBWZ 171 750 AZ LSUB AO024JBPZ AP PSPA A064JBEO 1 2 20 LSUB A038 JBWZ 1 1 8 AN PSPA A065JBEO 1 2 21 AR LX BZA075JBE0 AK PSPA A146JBE0 1 1 51 AC LX BZAO78JBEZ T 058 PSPA A150JBZZ 1 2 22 AF LX BZAi40JBEO 15854 PSPF B072JBEZ 1 1 53 AK 7 158219 AB PSPF B073JBEZ 1 1 78 AK LX BZAS364JBEZ 1 6 5 AG PSPF B112JBEZ 1 1 52 AY LX BZA434JBEZ 18 1 AR PSPF B113JBEZ 1 1 52 1 AY LX HZAO007JBEZ TER PSPF B114JBEZ 1 1 82 2 AQ LX NZA280JBEZ 1 8 9 AE PTUB A196JBEZ 1 1 54 AK LX NZA281JBEZ AG PVLVRA040JBEZ 1 8 18 BM LX NZAS318JBEZ 1 6 8 PVLVXA081JBEZ 1 8 19 BB LX NZA319JBEZ 1 6 7 AE Q 1 UM QFS GA062JBZZ 2 2 2 2 AF MSPH A026JBEO S RES SS p AB QFS GA063JBZZ 2 2 2 3 AE MSPH A027JBEG AB QFS GA064JBZZ 2 2 2 4 AF MSPR A036JBE0 AB QFS GA065JBZZ 2 2 2 1 BA MSPR A046JBE0 ME QSPGCA006JBZZ 2 SA1 AH MSPH 129JBEG ME AD QSW PAO16DREO 2 8W1 3 AB UN QTANZA021JBZZ 1 2 26 AN NFANPATZZJBFA EXTRA BE QTANZA044JBZZ 1 2 27 AU CP QW iZA120JBZZ 1 2 28 AU PACU A052JBEZ 1 8 11 BH N R 1 PCAP AO83JBEZ 153515 AC RC AZA046JBEO 1 2 62 BE POCABSAOBATBEZ pe ERE RC EZA250JBZZ 1 2 68 BG PCMPRAS24JBEZ CH RFiL A116JBZZ 2 L8 L4 AY FOONSASTIJBEZ 173 15 RFiLNAOO7CBZZ 2 L6 AR PCOV 0562JBEG 1 3 16 AD RFiLNAO13JBZZ 2 L5 BE PCOV AST8JBEZ AE RH HXA095JBZZ 1 2 67 BC PCOVSABSSJHEZ
35. 32 in the heating mode and start operation No Is the outdoor compressor running Yes Yes Does the air get cooler in the cooling operation mode Refer to 1 All rooms are not cooled Y Yes Check the four way valve Has the cycle been s witched No Y The heating cycle is normal CN4 1 and 3 of the 4 way valve Is AC230V applied between the connector Yes Pressure check jte Y Replace the outdoor control P W B Replace the 4 way valve AEX2M14LR CHAPTER 4 REFRIGERATION CYCLE 1 REFRIGERATION SYCLE UNITA x STOP valve Liquid on Heat exchanger Expansion valve B Heat exchanger Accumulator Compressor 4 way valve Heat exchanger INDOOR UNIT Refrigeration Cycle Expansion valve A STOP valve Gas OUTDOOR UNIT INDOOR UNIT Cooling gt gt 1 Cycle temperature and pressure in stop valve heating Flow of Refrigerant Operation Mode No Cool Cool Testrun Heat MAX Heat Test run 1 72 63 69 43 2 40 38 1 3 AY XPM7FR amp 3 13 15 28 24 AY XPM7FR amp 2 units 4 17 21 4 4 Stop valve pressure gas s
36. 39 how 12 0 ju 35 LIS 2 2 ele 8NO 1 22 4 0 d I y Norions 00102 70 bog G Wi 9 e anoo FH hol gagi AOL 085 Peer 199 T lt AAB Norions noe ved 20 eoo wand ee a bles 550 9 0241 9 Lad ze 84 5 Led xz 191 2 97 3 IO E EDEKI 5 scare i ZONE ove fee t 5 CEE is zon TE 88 seu assu 154 Litas 3 gon Tas 23 p EHE 2c 22 DES I num fai sad nal ka Se v a P 9 ATO H2 T5 SES Ss Ee ge 8Md Wd raat EI Ema AV18H 75 5 z E E 5 dVvOOS9Q0I e A HH 1 2101 2 m E 3 us D e 355 89 AL E 3 BOLD y rz 201 n 4 PENTOLE 808 298 i 14 5 5 5 E 38 iu z Po F yx EM LO J1OMLINOO 70 t 5 6 Qy axa ae zx ee m AL N V uea ip MEE d 1 8 BE ENO sasni N EE E AAT a A EO Y 5 5 SOF LNO I wm 34089 M27 AA Ais
37. 9 499U9 jeuuouqv Ieuuuouqv 0 uogeuedo e eungO sun uorsuedxe edid eAjeA sBojo 1181 uorsuedxe edid eA eA dojs shojo jueJeBujei 12040 2 uesa iya jo junouje payloads y 2 jo payloads y 2 e god eui 1 A quuesse god y jueuno OV c aas duejuonejedo e e 1o ouu uej y 2 2 3y 1 15 1oopino y ansug ute 1oopino y Moy insua L 10119 11 wnwxew OV e e e asno e Wd 100pino s9ejd y Aynunuoo 440 u ym jueuno OV L e e uej eu yo uO z 1 3U yo uO z 1u unO J snio are 400pino oy p jonnsqoun eunsu3 are y pejonujs
38. AEX2M14LR SHARP SERVICE MANUAL No S2038AEX2MLRT MULITI SPLIT TYPE ROOM AIR CONDITIONERS OUTDOOR UNIT MODEL AE X2M14LR In the interests of user safety Required by safety regulations in some countries the set should be restored to its original condition and only parts identical to those specified should be used CONTENTS CHAPTER 1 SPECIFICATIONS CHAPTER 3 FUNCTION AND OPERATION OF PRO 1 5 TECTIVE PROCEDURES 2 EXTERNAL 1 PROTECTIVE FUNCTIONS AND OPERA 3 CAPACITY TABLE a a fd 4 ELECTRICAL 2 TROUBLESHOOTING GUIDE 5 WIRING CHAPTER 4 REFRIGERATION CYCLE CHAPTER 2 EXPLANATION OF CIRCUIT AND OP 1 REFRIGERATION SYCLE ERATION 2 REFRIGERANT PIPE INSTALLATION 1 BLOCK DIAGARM 2 7 WORKS citctascuecuicisantutecirunseccreticdiecdiars 2 3 ACTIVE FILTER CHAPTER 5 DISASSEMBLING PROCEDURE 4 EXPLANATION OF IPM DRIVE CIRCUIT 2 6 1 Parts Guide Parts marked with A are important for maintainin
39. AF RH HXA096JBZZ 1 2 66 AZ PCOV A601JBWZ Ere RH iXA859JBZZ 8 2 28 1 BQ PCOV B484JBFA 1 1 56 AG 2 1 1 PDATSA24123ETA BC RH iZA140JBEO 2 iC2 AE PEPEPDASTUIBEZ 11 58 AG RHOG A169 JBEO 1 2 99 AK RH QXA005JBZZ 2 PTC1 AW PARTS CODE No AEN EART RH TXA008J5ZZ 1 2 93 BR 7 BR RH VXA002JBZZ 2 NR1 NR3 AF RiC A022BDEO 2 107 AE RiC A025BDEO 2 108 1612 RMOTSA058JBZZ 1 3 20 BD N RRLYDA008JBZZ 2 RY1 AH RRLYDAO10JBZZ 2 MRY1 AN RR WZA028JBEO 3 R1 RTHM A022JBE0 1 2 80 AN RTRN A294JBZZ 1 1 55 BG RTRN A305JBZZ 2 CT1 N RTRNWA034JBZZ 2 TRi AG S SPAKCC801JBEZ 4 5 1 BD N T TiNS B240JBRZ 1 4 8 AK N TiNS B241JBRZ 1 4 4 AK N TiNS B242JBRZ 1 4 6 N TLAB B709JBRA 1 1 57 AH TLAB B777JBRZ 1 2 83 AC TLAB C250JBRA 1 1 60 AG TLAB C511JBRA 1 1 76 AC TLAB C773JBRZ 1 1 62 AN TLABCC545JBRZ 1 1 64 AH TLAB D243JBRZ 1 2 85 AM TLAB D246JBRZ 1 2 84 AF TLAB E544JBRZ 1 1 61 AM TLAB E787JBEZ 1 1 77 AK TLABMA819JBRA 1 1 63 N TSPC G699JBRZ 1 1 65 AK N V VHD18R139 6 1 2 D2 4 AB 7 2 D19 21 AB VHD1SR35 4A 1 2 D26 37 AC VHD188133 1 2 01 D38 VHDD25VB 1 VHDD25VB60 1 1 2 65 AN 6 2 Di4 AD VHGPC81716P 1L 2 PCi AD VHGPC817XP3 1L 2 PC4 6 8 AD VHGPC853HXP 1R 2 PC5 7 9 AG VHiK
40. CTIVE PROCEDURES 1 PROTECTIVE FUNCTIONS AND OPERATIONS NO Function Operation Description Detection time Restart condition Restart In Out time door door Compressor is stopped if a current approxi Durna tens Automatically restarts 1 DC over current mately 24A or more flows in the power tran 9 p after safety time 180 4times Yes Yes sor operation sistor module seconds Lowers the operating frequency if the com Automatically restarts pressor AC current exceeds set value During compres 2 AC over current after safety time 180 4 times Yes Yes 16 0A Stops the compressor if the current sor operation seconds exceeds at minimum frequency Lowers the operating frequency if the tem Compressor over perature of the compressor thermistor TH1 Duhatompras Automatically restarts 3 heat prevention con rises above 108 C Compressor is stopped if after safety time 180 No limit No No trol the thermistor stay above 108 C for 2 min P seconds utes at minimum frequency Automatically restarts Compressor Compressor is stopped if the compressor when thermistor 1 4 p 9 thermistor is above 113 C Or when TH1 9 p temperature falls below 4 times Yes Yes temperature error sor operation shorts 99 C approximately 30 minutes Lowers the operating frequency if the tem Outdoor heat perature of the outdoor heat exc
41. IC12 3 IPM30A BOARD PARTS 2 23 DSGY C347 JBKZ BV IPM30A board assembly 2 23 1 RH i XA859 JBZZ BQ Power module PS21267 P R1 RR WZAO28 JBEO AE Cement Resistor R100 RH TXAO008JBZZ BR ACTIVE FILTER SACT32420G VHDD25VB 1 DIODE BRIDGE D25VB60 4 PACKING PARTS PRICE NEW PART NO PARTS CODE MARK RANK DESCRIPTION 4 PACKING PARTS 5 1 SPAKCC801 JBEZ BD N Packing case 5 2 CPADBA131 JBKZ AZ Bottom pad assembly 5 3 CPADBA132JBKZ AS Packing pad assembly AEX2M14LR mINDEX PARTS CODE No PRICE NEW BANC PARTS CODE No PANE ARI RANK C 1 PGUM A115JBEZ 1 1 21 AM CCHS A789JBTB 1 1 1 BD PGUM A119JBEZ 1 1 22 AG CCiL A158JBKZ 1 8 1 AX PGUM A120JBEZ 1 1 23 AG CFTA A339JBKZ 1 1 71 AY PGUM A121JBEZ 1 1 24 AE CMOTLB426JBEZ 1 1 2 CA PGUMSO170JBEO 1 1 26 AE CPADBA131JBKZ 4 5 2 AZ PGUMSA319JBEZ 1 1 27 AF CPADBA132JBKZ 4 5 3 AS PMUF A091JBEZ 1 8 17 AZ D 1 PRDAFA163JBEZ 1 1 25 AP DBOX A079JBYZ 1 271 AS PRDAFA215JBEZ 1 2 18 BE DCAB A161JBTA 171 8 BN
42. N u jo eouejsise si A N A oN Papeuuoo ENDS 1 1 ON n N n d T 2 Ae panos pejeuuoo 9NI SI eu oN 1 Ad oue sis 1 JO upee S JeDueuoxe 105 Si ON T y ieduie Joopyno 10 SMeJoS UMA ESS uis eeu eu SOA oN ZH 1 10198 19MOd HO 10 ejes ASL 5 9249911 gy S9A yeay Josseud 515169 gMd 994 SI W09 JO 101511 oN 1 Bunejedo 10 9 5 1 SeA uejJoopijno s eouejsiseJ y S L yulsyeoy ay Woy Jo 348S u youq 19 jeuuojsue T S9A e ul au S jueuno y JO eui SI L_ pejoeuuoo 9 NO SI A 1 N 1 yjeuuouqe Wal 1 y 100pjno 10119 fy 104984 19d a a us i Jueuns OW TEMROUAY lnpoui Jemog 101019 JO Jo uedo ry 3 7 2 When room is not cooled other rooms cooled Is the timer lamp of the indoor unit in the room not cooled flashing Press the OPERATION butto
43. PLY Cincurr 2501 250V 2A o jn NEUTRAL N u Ll FUSE LIVE R 1500 uF 1008 E 40V 420V COMPRESSOR GIRE 545 from CONTROL PWB CN14 from ELECTROLYTIC CAPACITOR C10 FROM CONTROL PWB from COMPRESSOR TERMINAL if W ORANGE from COMPRESSOR TERMINAL from COMPRESSOR TERMINAL U RED V WHITE ooo o aaa SS gt O00 o s o wwwwwwwa Ya 55 gt o ool T N E C105 gt 98 C02 from CONTROL PWB BCN1 IPM P W B 1 4 AEX2M14LR 9LNO8 3 1O3 1NOO YOLOW Od ula 1ddf1S YAMOd ayog TIVNIIASH3 L ubu LINN VOS TVNIIASH3 L Na LINA TVNIIAS3 L 8 TOHLINOO 21399 TOH LNOO JINON YALA JALOV uY L ENDO 8 Woy M r NMOY9 p wt D Y 1081402 W033 n uu Wdl E m a E 19 I Spm SINO m 8 100 8 uo Wb 0 394 JD M0113A E N3389 00 VZ AOGZ sm 134 20 s a 30193130 NOILISOd IOH LNOO AVM YOLOW NV4 OND XO8 Na YAMOd TVNIIASH3 L
44. PRDAFA216JBEZ 1 2 14 BC DSGY C347JBKZ 1 2 23 BV PSEL B954JBEZ 1 1 30 AF 7 3 2 23 BV PSEL B956JBEZ 1 1 81 AF DSGY E095JBKZ 172 2 CB N PSEL B966JBEZ 1 1 32 7 2 2 8 CB N PSEL CO11JBEZ 1 1 84 AC DVLV A668JBKZ 178 5 AZ PSEL CO17JBEZ 1 1 85 AC DVLV A669JBKZ 1 3 6 AW PSEL CO19JBEZ 1 1 86 AD DVLV A952JBKZ 178 2 AU PSEL C037JBEZ 1 2 15 AE DVLV A958JBKZ 1 3 3 AU PSEL CO74JBEZ 1 2 16 AC DVLV A954JBKZ 178 4 AU PSEL C260JBEZ 1 1 37 CFE PSEL C261JBEZ 1 1 88 AC FCMPRA244JBKZ 1 8 21 PSEL C262JBEZ 1 1 89 AC FCOV A330JBWZ 1 1 4 AZ PSEL C277JBEZ 1 1 40 AG FH iXA4984JBKZ 2 166 N PSEL C282JBEZ 1 1 41 AD Cay PSEL C343JBEZ 1 1 42 AE GCAB A366JBT 171 5 BR PSEL C353JBEZ 171 48 AP GFTA A455JBTB 1 1 6 PSEL C354JBEZ 1 1 44 AE GGADFA042JBFA 171 7 BH PSEL C369JBEZ 1 1 45 GLEG A029JBE0 1 3 7 AE PSEL C370JBEZ 1 1 46 GPLTMAO59JBTB 1 1 8 AF PSEL C371JBEZ 1 1 47 LL PSEL C372JBEZ 1 1 48 AC LANG A481JBWZ 1 3 8 AE PSEL C373JBEZ 1 1 49 AC LANG A488JBWZ 10 24 AR PSEL C374JBEZ 1 2 17 AC LANGKA236 JBPZ 1 1 9 AY PSEL C376JBEZ 1 2 12 AC LANGKA253JBPZ 1 1 8 1 AM ESELCOSTTUJBEZ 1 2 98 AC LBND A046 JBEG TAF AE PSEL C378JBEZ 1 1 66 AB LBNDKA154JBWZ 1 2 5 AN PSEL C379JBEZ 1 1 67 AB LBSHGAOOSJBEO AA PSEL C382JBEZ 1 1 69 AC LHLD 0261JBMOG AB PSEL C938JBEZ 1 1 73 AK CHUDSAZ5OJBEZ AD PSEL D235JBEZ 1 1 28 AG LHLD ABS74JBFA i i 16 AE PSEL D236 JBEZ 1 1 59 AG EBETTAUSSJHEU 1 4 2 PSEL D274JBEZ 1 1 88 AG LBITPRAOSSJBEZ AG PSHE A
45. WN SW2 AV 1321 2 AlddNS IVNIWYAL Woy 213 8 Md AlddNS YAMOd w9LNOu 10139 AlddNS YAMOd wSLNOu AlddNS H3MOd CONTROL P W B and DISPLAY P W B AEX2M14LR EE LINOS LNO
46. ZZ AF Fuse FUSES 4 2 2 3 QFS GA063JBZZ AE Fuse FUSE5 2 2 4 QFS GA064JBZZ AF Fuse FUSE6 D2 4 VHD1SR139 6 1 AB Diode 15 RFi LNAO13JBZZ BE Normal coil L5 L6 RFiLNAOO7CBZZ AR Common coil L6 02 VS2SA1586G 1L AB Transistor Q2 RTRN A305JBZZ N Transformer CT1 D14 VHDRK36LF011B AD Diode D14 D19 21 VHD1SR139 6 1 AB Diode D26 37 VHD1SR35 4A 1 AC Diode D26 37 1 RH i XB001 JBNA Micro computer IC1 IC2 RH i ZA140 JBEO AE Integrated circuit IC2 4 VHiSTRL472 1 AL Integrated circuit IC4 IC5 VHiKiA339F 1L AD Integrated circuit IC5 IC6 FH i XA494 JBKZ N EEPROM AEX2MA4LR IC6 IC7 RiC A022BDE0 AE Integrated circuit IC7 IC8 VHiMM1431A 1 AD Integrated circuit IC8 9 VHiNJM2904M 1R AD Integrated circuit IC9 NR1 NR3 RH VXA002 JBZZ AF Varistor NR1 NR3 1 VHGPC81716P 1L AD Photo coupler PC1 Q11 VSKRC245M 3 AC Transistor Q11 013 15 V828A1020Y 1 AH Transistor Q13 15 RY1 RRLYDAOO08 JBZZ AH Relay RY1 SA1 QSPGCAO006 JBZZ AH Surge absorb SA1 SWi 3 Q8SW PAO016DREO AB Tact switch SW1 2 3 RTRNWAO034 JBZZ AG Transformer TR1 MRY1 RRLYDA0O10JBZZ AN Relay MRY1 PTC1 RH QXA005JBZZ AW PTC thermistor PTC1 1314 RFiL A116JBZZ AY Coil L3 4 D1 038 VHD1SS133 7 1 AA Diode D1 38 4 6 8 VHGPC817XP3 1L AD Photo coupler PC4 6 8 PC5 7 9 VHGPC853HXP 1R AG Photo coupler PC5 7 9 IC3IC12 RiC A025BDE0 AE Integrated circuit IC3
47. and the display returns to normal condition after this display period The content of self diagnosis cannot be called out by the self diagnosis display function of the outdoor unit 2 The self diagnosis display function of the outdoor unit indicates the error information by flashing LED1 Example of self diagnosis display on outdoor unit Compressor high temperature abnormality ON 0 5 sec 0 5 0 5 0 5 0 5 0 5seq 0 5 sec 0 5 0 5 sec 0 5 sec 0 5 sec 0 5 sec 0 5 sec OFF Main category Sub category Malfunction No 5 jun 400pjno JO yo uO z pueog Ieuluu Aquiesse Ionuoo 1 y 6 Aiddns 104 0 c L Aiddns 104 pieoq 9e d x L Aiddns 10J paeoq u _ 95 Ieuu ul uoneedo ui syun Ajquiesse god jun 100pjno eui eoejdes y Od pun A
48. ce AEX2M14LR 1 OUTDOOR UNIT 2 21 137 N O29 AEX2M14LR PRICE NEW PART NO PARTS CODE RANK MARK RANK DESCRIPTION 1 OUTDOOR UNIT CABINET AND UNIT PARTS 1 1 CCHS A789 JBTB BD Base pan assembly 1 2 CMOTLB426 JBEZ CA Fan motor 1 3 DCAB A161 JBTA BN Rear cabinet assembly 1 4 FCOV A330JBWZ AZ Coil cover assembly 1 5 GCAB A366 JBTA BR Cabinet 1 6 GFTA A455JBTB AP Control box cover 1 7 GGADFA042JBFA BH Fan guard 1 8 GPLTMA059 JBTB AF Side cover 1 9 LANGKA236JBPZ AY Motor angle 1 9 1 LANGKA253 JBPZ AM Fan Motor angle sub 1 10 LHLD A574JBFA AE Thermistor holder 1 11 L8UB A024 JBPZ AP Motor angle sub 1 12 MSPR A026 JBEO AB Spring 1 13 MSPR A027 JBEO AB Thermistor spring 1 14 MSPR A036 JBEO AB Thermistor spring 1 15 MSPR A046 JBEO AC Protector spring 1 16 MSPR A129JBEO AD Cycle spring 1 17 NFANPA142JBFA BE Propeller fan 1 18 PCOV A578 JBEZ AE Sw board cover 1 19 PCOV A589 JBEZ AF Cover 1 20 PDAi A241JBTA BC Flare coupling base 1 21 PGUM A115JBEZ AM Damper rubber 1 22 PGUM A119JBEZ AG Valve rubber 1 23 PGUM A120JBEZ AG Valve rubbe
49. cuit Expansion valve A drive circuit gt Expansion valve I Expansion valve B drive circuit Expansion valve gt Expansion valve C drive circuit gt Expansion valve kK 3 15A Fuse gt 4 way valve relay drive circuit 4 way valve N o 2 I 4 Outdoor fan motor drive circuit gt Outdoor fan motor D 20A Fuse m gt Power transistor module drive circuit Y gt Power transistor module oN Unit unit wiring lt gt Serial I O circuit Y _ power and serial signals CPU reset circuit Compressor CPU DC overcurrent detection circuit AC overcurrent detection t lt Current transformer Compressor thermo circuit Compressor thermistor RE CN8A t lt Heat exchanger pipe thermo circuit I Heat exchanger pipe thermistor CN8A Outdoor temp thermo circuit t Outdoor temperature thermistor G CN8A Suction pipe thermo circuit t lt Suction pipe thermistor BK CN8A t lt Heat sink thermo circuit t lt Heat sink thermistor BK CN8B I Unit A thermo circuit Thermistor unit A BL Suction thermistor CN8C t lt Unit B thermo circuit Thermistor unit B WH LED drive circuit LED t lt Pump down switch circuit t lt Wire check switch circuit t lt Position detection circuit Compressor t lt Thermal fuse circuit t lt Thermal fuse in terminal board CN5
50. d Thermistor No Connector Color Connector pin Compressor thermistor TH1 CN8A Red No 1 to 2 Heat exchanger pipe thermistor TH2 CN8A Orange 3 to 4 Outdoor temp thermistor TH3 CN8A Green No 5 to 6 Suction thermistor TH4 CN8A Black No 7 to 8 Thermistor unit A suction TH6 CN8C Blue No 1 to 2 Thermistor unit B suction TH7 CN8C White No 3 to 4 Figure 3 Temperature properties of heatsink thermistor 500 4 Thermistor Signal Color 400 Heatsink Black To measure the resistance first remove 1 the connector as shown at right 300 4 Heatsink thermistor TH5 black 25 C resistance 50kQ I aa 200 4 Resistance 6 14 12 3k 7 3 25k Q 20 0 20 40 60 80 100 Temperature 100 7 2 How to distinguish the defective parts 1 When all rooms are not cooled Are the timer lamps of the in Yes door units in all rooms flashing No Press the OPERATION button to start operating the air condi tioner One room operation ON Set the cooling mode to 18 C Y Yes Is the compressor of the outdoor unit operating No 1 Y Y The cooling cycle is abnormal Are the timer lamps of the indoor Yes Check the failure symptom with units in all rooms flashing the failure
51. d The operating frequency is as shown in the table below The indoor fan is s topped All expansion valve are open for 5 minutes 3900 rpm after that 3700 rpm Defrost stop When defrosting time exceeds 10 minutes When the temperature of the outdoor heat exchanger rises above approximately 15 C Defrost stop is determined by either of the above conditions and the compressor is stopped At the same time the outdoor fan go ON The compressor is reactivated in the heating cycle 1 minutes after it was stopped and normal control resumes 12 Power factor module Output voltage If a voltage error over 450V is detected at power factor module output voltage the compressor is stopped for 3 minutes In this case the out door fan does not stop for 3 minutes and another try will be made Three retries are allowed On the fourth retry a complete stop request signal is sent to the indoor unit and the outdoor unit will remain stopped until reset is performed At this time the 3 minutes delay for control of the outdoor unit will not function therefore do not cancel by removing the plug and cutting the power 13 Winter cool Cooling operation is available during the winter season by the built in winter cool function Lower limit of outdoor temperature range is 10 C DB When the outside air temperature is low the outdoor unit fan operates at slower speed NOTE Built in protect drive may work when outdoor temperature falls below 2
52. d recovery diode i ke N side eo LU LV LW IGBT 1 VcIN n t 4 e N GND Bootstrap circuit 2 DC over current detection circuit When a current about 24A or higher flows through the shunt resistor R100 on IPM printed circuit board PWB the voltage on this resistor is input to IPM CIN pin 16 Then the gate voltage of the lower phase IGBT LU LV LW inside the IPM turns OFF to cut the over current off At the same time an L output which lasts about 1 8 ms is generated from IPM Fo pin 18 and it results in an L level input to over current detection input pin 53 of the microcomputer IC1 and then turns OFF the compressor driving signal output IC1 from pins 65 to 70 to the IGBT gate 4 Protection circuit status SET RESET Lower phase Internal IGBT gate 2 About 24 5 1 j Output current Ic A 2 Sense voltage relative to shunt resistance Delay by CR time constant circuit About 1 8 ms Error output Fo 2 14 3 120 energizing control digital position detection control This control system detects the digital position detection signal and adjusts the rate of acceleration deceleration accordingly The motor s induced voltage waveform is input to the comparator in the form of PWM switched pulse and a position detection signal is generated as a reference voltage which i
53. egory flash in sync with the Timer LED on the indoor unit b In the event a complete shutdown occurs due to a malfunction the Operation LED red Timer LED yellow Plasmacluster lon LED blue c If the power cord is unplugged from the AC outlet or the circuit breaker is turned off the self diagnose is memory loses the stored data flash to indicate the general information of the generated malfunction 2 Display of detailed self diagnosis result with main category and sub category indications When malfunction information is called out the main cat egory and sub category of the self diagnose is result are indicated by the Operation Timer and Plasmacluster lon LEDs on the indoor unit Timer LED yellow Operation LED red Plasmacluster lon LED blue Basic flashing cycle due to 1 Example of self diagnosis result displayed on indoor unit Suction thermistor open circuit error error E sec 1 sec 1 sec 5 sec ON OFF 16 8 4 2 1 Figures in indicate numbers binary notation assigned based on the flashing sequence ON OFF Flashing for main category indication 4 a 4 1 5 Flashing for sub category indication 2 2 outdoor unit according to the content of self diagnosis The self diagnosis display function of the outdoor unit is active only for about 3 to 10 minutes after self diagnosis is performed during operation
54. g the safety of the set Be sure to replace these parts with specified ones for maintaining the safety and performance of the set iim iuaa m F ee ee This document has been published to be used for SHARP CORPO RATION after sales service only The contents are subject to change without notice AEX2M14LR CHAPTER 1 SPECIFICATIONS 1 SPECIFICATION ITEMS INDOOR UNIT OUTDOOR UNIT AY XPM7FR 9FR 12FR AE X2M14LR Cooling capacity kW 2 INDOOR OPERATION 7K amp 7K 3 8 1 8 4 3 Heating capacity kW 2 INDOOR OPERATION 7K amp 7K 4 4 1 9 5 4 Moisture removal Liters h 1 6 Electrical data Phase Single Rated frequency Hz 50 Rated voltage V 230V Cool A 4 1 1 6 5 3 Rated sument Heat A 4417 59 Cool w 900 350 1160 Rat d input Heat W _ 950 370 1300 95 Power factor Heat 94 Type Hermetically sealed DC twin rotary Compressor Model DA130A1F 28F Oil charge Ester oil VG74 Evaporator Silt Fin and Grooved tube type Condenser Corrugate Fin and Grooved tube type Refrigerant system Control Expansion valve Name of refrigerant R410A Refrigerant volume 1680g High Med Low 37 34 28 Noise level at cooling dB A 9FR 39 36 28 45 12FR 40 37 29 Fan system Drive Direct drive High Med Low 7FR 8 0 7 4 5 4 Air flow quantity at cooling m3 min 9ER 8 6 7 9 56 33 12FR 10 2 8
55. ge to the oscilloscope or indoor electric circuits CAUTION when attaching or removing the board When operating only the outdoor unit cooling 48 3 Hz fixed mode to make the outdoor unit run in cooling mode apply a voltage of 220 240V AC to L and N on the terminal board and push the pump down switch SW1 Avoid operating the outdoor unit alone for long periods of time UNTB a Um um g UD 5 8 UNIT C S9 RC _s gt SW2 WIRE CHECK PUMP DOWN Figure 2 Temperature properties of outdoor thermistors TH2 Heat exchanger pipe thermistor CN8A 3 TH3 Outdoor temp thermistor CN8A F TH4 Suction thermistor CN8A 8 1 20000000 11000000 6 TH6 Thermistor unit A CN8C 1 Connector Connector TH7 Thermistor unit B CN8C 8 4 CN8A i CN8C e TH1 compressor thermistor CN8A 1 3 r1 0 resistance 400 8 5 2 30k 14 5 k S 300k 25 resistance 25 C resistance o ASK 20k 4 431 kQ 200K TH2 100 2 28k 10k TH6 TH8 1 72k I I 0 20 0 60 80 100 120 Temperature C 20 20 0 20 40 Temperature C 60 To measure the resistance first remove the connector from the boar
56. hanger rises During compres Automatically restarts 5 exchanger overheat above 57 C during cooling Stops the com 9 p after safety time 180 No limit No No gt sor operation prevention control pressor if the temperature stays above 57 C seconds for 2 minutes at minimum frequency Compressor ia stopped if heat exchanger or When the room Thermistorshori outdoor thermistor shorts Close the expan is activated turns Operation OFF ime Yes Yes sion valve of the corresponding room if ON and the com some suction thermistor shorts pressor starts Compressor is stopped if compressor or When the room heat exchanger or outdoor thermistor opens turns ON andthe 7 Thermistor open Close the expansion valve of the corre CONDIGSSOE Operation OFF 1time Yes Yes sponding room if some suction thermistor starts shorts opens Ae abnormal ur Compressor is stopped if the operating fre During compres Automatically restarts 8 quency is above 70Hz and the compressor after safety time 180 4 times Yes Yes rent Sor operation current is below 0 8A sec INDOOR If open while timer LED blinks operation is continued If short operation is continued OUTDOOR Automatically restarts Closes the expansion valve of the corre aS soon 8s tH serial 9 Serial signal error sponding room if the outdoor unit does not During operation limit Yes Yes PEU communication receive a serial signal from one or more becomes po
57. he temperature of the heat sink exceeds 90 C the compressor is stopped In this case the outdoor fan does not stop and when the temperature of the heat sink decreases to 80 C 180 seconds after operation is stopped another try will be made Three retries are allowed On the fourth retry a complete stop request signal is sent to the indoor unit and the outdoor unit will remain stopped until reset is performed At this time the 3 minutes delay for control of the outdoor unit will not function therefore do not cancel by removing the plug and cutting the power Also if the temperature of the heat sink exceeds 100 C a complete stop request signal is sent to the indoor unit and the outdoor unit will remain stopped until reset is performed At this time the 3 minutes delay for control of the outdoor unit will not func tion therefore do not cancel by removing the plug and cutting the power 5 SERIAL SIGNALS Serial signals consist of all 96 bit signals If the condition as outdoor unit unable to receive a serial signal from the indoor unit continues for 30 seconds it closes the expansion valve which corresponds to the room which can not be communicated If all indoor units can not com municate with the outdoor unit the compressor is stopped 6 THERMISTOR OPEN OR SHORT When compressor heat exchanger outdoor thermistor suction ther mistor CN8A are in OPEN or SHORT condition even if they are in the condition which an operation s
58. iA339F 1L 2 165 AD VHiMM1431A 1 2 108 AD VHiNJM2904M 1R 2 VHISTRL472 1 2 104 AL VS2SA1020Y 1 2 Q13 15 VS2SA1586G 1L 2 02 VSKRC245M 7 8 2 011 AC X XBPS730P10000 176 12 AF XBP8740P14J80 176 9 AB XBPS740P20J00 T 6 11 XCTS740P10000 1 6 10 AC XTTWW40P16000 1 6 14 AC AEX2M14LR SHARP COPYRIGHT 2009 BY SHARP CORPORATION ALL RIGHTS RESERVED No part of this publication may be reproduced stored in retrieval systems or transmitted in any form or by any means electronic mechanical photocopying re cording or other wise without prior written permission of the publisher
59. ide MPa gauge 1 00 1 13 2 35 1 72 Frequency Hz 60 35 70 30 1 80 67 77 54 2 38 37 2 3 AY XPM12FR 3 10 13 39 28 1 unit 4 12 18 3 5 Stop valve pressure gas side MPa gauge 0 78 1 01 3 20 2 25 Frequency Hz 65 35 70 35 AEX2M14LR Running unit No Operation Mode Cool MAX Cool Test run Heat MAX Heat Test run 1 73 63 77 48 2 37 37 2 4 AY XPM9FR 3 10 14 38 28 1 unit 4 14 20 4 5 Stop valve pressure gas side MPa gauge 0 87 1 07 3 12 1 98 Frequency Hz 50 30 60 25 1 68 62 69 41 2 37 36 3 4 m 3 11 14 34 28 4 16 20 5 6 Stop valve pressure gas side MPa gauge 0 93 1 07 2 83 1 79 Frequency Hz 40 20 50 20 Standard conditions Indoor side Outdoor side Dry bulb temp C Relative humidity Dry bulb temp C Relative humidly Cooling 27 47 35 40 Heating 20 _ 7 87 2 PERFORMANCE CURVES NOTE Total cooling capacity and total input with 2 units running Running frequency 60HZ 1100 Running frequency 50HZ m 1000 am e zs amp 900 90 a lt 800 LA 00 2 A E 19 5 34 k 18 32 8 17 ET 30 16 5 60 a 28 8 50 26 45 40 ES 8 T 8 5 4 0 2 8 3 5
60. ignal is transmitted from indoors the compressor will not start If any suction thermistors CN8C become OPEN or SHORT resistance the protective procedure will work only for the cycle corresponding to the malfunctioning suction thermistor 7 MISWIRING CHECK Mis wiring check is conducted by detecting the indoor heat exchanger temp For example when the expansion valve for only room A is open and the wiring is correct the indoor heat exchanger temp for room A will reduce If the wiring is incorrect the indoor heat exchanger temp for a different room will reduce 8 SAFETY TIME When the unit is operated by the remote control after the breaker is turned on the safety device of the compressor will work and the com pressor will not operate for 90 seconds 9 PUMP DOWN SWITCH When the PUMP DOWN SWITCH SW1 is pressed for 5 seconds or more the total A C system will start its TEST RUN automatically and the compressor frequency will be 48 3 Hz When operating only the outdoor unit cooling 48 3 Hz fixed mode To make only the outdoor unit run in cooling mode and apply a voltage of 230 V AC to N and L on the terminal board and push the pump down switch SW1 Avoid operating the outdoor unit alone for long periods of time 10 CONTROL OF COMPRESSOR OR AND EXPAN SION VALVE For 90 seconds after turning on the AC power the compressor will not be activated even if indoor units request the compressor to do so If the compressor
61. key Turn all the way up to contact AEX2M14LR 8 Fully open the stop valve gas side with hexagon socket screw key Turn all the way up to contact 9 Disconnect the gauge manifold hose from the service port 10 Replace the service port cap and both valve shaft caps tightly Turn until the torque suddenly increases Now tighten a 1 6 turn more NOTE Use gauge manifold and hoses exclusive for R410A After air removal check the tube connections for gas leak using a leakage detector or soapy water Regarding leak age detector use high sensitivity type designed specially for R410A Gauge manifold Stop valve gas side Stop valve liquid side Hexagon socket screw key OT 4mm Valve shaft cap OPEN 3 Pump down Pump down is adopted in the case of unit removal for reinstallation abandonment repair etc Pump down is to collect the refrigerant into the outdoor unit by control of the stop valves and the compressor 1 Turn the circuit breaker on 2 Check that all LED 2 on the display board unit are flashing synchronously in a slow one flash per second cycle 3 Stop the air conditioner operation 4 Remove both valve shaft caps of the stop valves 5 Press the PUMP DOWN SWITCH 5 1 on the display board unit for 5 seconds or more The indoor outdoor unit will start operation in the pump down mode the OPERATION lamp on the indoor unit will flash and three BEEP will be emitted
62. n to start operating the air conditioner Set the cooling mode to 18 C Yes Check the failure Y symptom with the failure es diagnosis mode Is the timer lamp of the indoor unit in the room not cooled flashing Y Short circuit of the thermistor error Check that the power Open circuit of the thermistor error between the terminal No board N and 1 of the indoor unit is AC 230V Is the resistance value of the ther mistor for UNIT A TH6 or UNIT B TH7 Yes Yes Replace the indoor control PWB No Y Repair the wiring between the units Replace the thermistor or the expansion valve UNIT A or the expansion valve UNIT B Replace the outdoor control PWB x 3 When all rooms are not heated Abnormal fan motor of indoor unit Y Open circuit of serial signal line Short circuit of serial signal line Is the resistance value of the winding in the fan motor Yes Y Replace the indoor fan motor No Is the wiring between the units connected by mistake or broken No Yes Repair the wiring between the units Y Replace the indoor control PWB Press the ON switch on the remote control to run the air conditioner Set the temperature to
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64. r 1 24 PGUM A121 JBEZ AE Damper rubber 1 25 PRDAFA163JBEZ AP Heat sink 1 26 PGUMS0170JBEO AE Damper rubber 1 27 PGUMSA319JBEZ AF Damper rubber 1 28 PSEL D235JBEZ AG INSULATOR 1 30 PSEL B954JBEZ AF Bulkhead insulator 1 31 PSEL B956JBEZ AF Bulkhead seal 1 32 PSEL B966JBEZ AC Bulkhead seal 1 34 PSEL C011JBEZ AC Insulator 1 35 PSEL C017JBEZ AC Cabinet seal 1 36 PSEL C019JBEZ AD Insulator 1 37 PSEL C260JBEZ AC Seal A 1 38 PSEL C261 JBEZ AC Seal B 1 39 PSEL C262 JBEZ AC Seal C 1 40 PSEL C277JBEZ AG Cover insulator 1 41 PSEL C282 JBEZ AD Cushion 1 42 PSEL C343JBEZ AE Bulkhead insulator A 1 43 PSEL C353JBEZ AP Insulator 1 44 PSEL C354 JBEZ AE Insulator 1 45 PSEL C369 JBEZ AC Accum cushion 1 46 PSEL C370JBEZ AC Insulator 1 47 PSEL C371 JBEZ AC Seal 1 48 PSEL C372JBEZ AC Seal 1 49 PSEL C373JBEZ AC Seal 1 50 PSKR A353JBWZ AZ Bulkhead 1 51 PSPA A146JBEO AC Spacer 1 52 PSPF B112JBEZ AY Compressor cover A2 1 52 1 PSPF B113JBEZ AY 1 52 2 PSPF B114JBEZ AQ 1 53 PSPF BO72JBEZ AK Compressor cover B2 1 54 PTUB A196JBEZ AK Pipe insulator 1 55 RTRN A294 JBZZ BG Active coil L1 1 56 PCOV B484 JBFA AG TUBE COVER 1 57 TLAB B709 JBRA AH Label 1 58 PFPFPD477JBEZ AG INSULATOR 1 59 PSEL D236 JBEZ AG INSULATOR 1 60 TLAB C250 JBRA AG Unit label 1 61 TLAB E544JBRZ AM Service label 1 62 TLAB C773JBRZ AN Label 1 63 TLABMA819 JBRA N INVERTER LABEL 1 64 TLABCC545 JBRZ AH Wiring diagram 1
65. rheating prevention line 2 57 57 Overheating When ON 54 When OFF line 1 900 2100 5200 7200 2 OVER CURRENT PROTECTION DC over current detection AC over current detection To protect against over current due to sudden change in load the compressor is stopped if 24 DC is exceeded in the DC section If the set value of AC current is exceeded in the AC section the compressor is stopped 90 seconds after the compressor has been stopped another starting try will be made Three retries are allowed On the fourth retry a com plete stop request signal is sent to the indoor unit and the outdoor unit will remain stopped until the indoor operation is stopped DC over cur rent is detected by the power module AC over current is detected by CT1 on the outdoor PWB Cooling mode 16 0 Heating mode 16 0 3 COMPRESSOR PROTECTION CONTROL If the temperature of the compressor exceeds 113 C the compressor is stopped In this case the outdoor fan is not stopped until the tem perature of compressor drops below 99 C In 90 seconds after the compressor is stopped if the temperature is below 90 C another starting try will be made Three retries are allowed On the fourth retry a complete stop request signal is sent to the indoor unit and the out door unit will remain stopped until the indoor operation is stopped 4 POWER TRANSISTOR MODULE PROTECTION If t
66. rocomputer IC1 and the operation of the Active Filter will be stopped 18V 5V 9 R33 270KF R32 270KF pc IC1 62 W Voltage 12 C57 R31 R34 4 64KF 9 53KF 50V __ cse ov 50V ov 2 14 4 EXPLANATION IPM DRIVE CIRCUIT The power supply for the IPM drive and the shunt resistor for over current detection etc are provided out of the IPM in control PWB 1 IPM drive power supply circuit The power supply for driving the upper phase IGBT HU HV HW drive employs a Bootstrap system The 15 V power supply for the lower phase IC is provided by the control printed circuit board PWB 1 Brief explanation of Bootstrap system single power drive system To supply power to the upper phase IC the microcomputer IC1 turns ON the lower phase IGBT LU LV LW It results in a charging current that flows through the electrolytic capacitor in each upper phase IC input and charges the Bootstrap capacitor up to 15V voltage The power supply for the subsequent stages is stored when the lower phase IGBT is ON in common drive control of the compressor Initial charge period gt Charging current group mo Bootstrap capacitor E I Y HU HV HW EE HVIC tek ct ERRARE gt L Tte AN High voltage withstanding I high spee
67. s in all rooms are fully opened 11 DEFROST OPERATION 1 Overview Defrosting begins during heating if the conditions for compressor operation time and outdoor heat exchanger temperature are met When defrosting begins the indoor and outdoor fans stop Defrost ing stops when the temperature of the outdoor heat exchanger goes above approximately 15 C or defrosting time exceeds 10 min utes Defrost mask time Defrost mask time Defrost mask time Heating begins Defrosting Defrosting Max 10 min Max 10 min 2 Defrosting If the compressor operation time is more than 20 minutes in the heating mode and the outdoor air temperature and outdoor heat exchange temperature satisfy the defrosting conditions the defrosting operation is started When the defrosting operation is started the indoor fan starts to run intermittently When the outdoor heat exchanger temperature reaches approx 15 C or above or when the defrosting time exceeds 10minutes the defrosting opera tion is quit AEX2M14LR More than 20 mn More than 20 min More than min Heating operation start ee Defrosting Defrosting Max 10 min Max 10 min 3 During defrosting When defrosting begins the compressor stops Approximately 1 minutes later the compressor reactivates in the refrigeration cycle and the outdoor heat exchanger is defrosted Each mode is as fol lows The outdoor fan is s toppe
68. s equal to 1 2 of 370 VDC However since there is no induced voltage waveform when the PWM waveform is OFF the microcomputer works in an internal processing so that detection is enabled only when it is ON Based on the position signal detected actual PWM waveform output timing is determined Since it does not use a filter circuit the accuracy of detection The microcomputer works in an internal processing to eliminate spiky voltage during the regenerative process Furthermore even if the induced voltage is low position detection is still possible and it allows sensor less operation at low rotation speed in the initial stage of operation These reduce the starting current and improve reliability of IPM Terminal voltage waveform Reference voltage D 1 2 of DC voltage Spiky voltage N Comparator output waveform cancelled Position signal waveform 4 180 energizing control This is the control system to moderate the speed by the current phase difference for higher efficiency and lower Motor voltage noise of the compressor The current phase difference control is the control system paid attention to the interre lation between efficiency and phase gap generated by the applied voltage of motor and current in the coil of motor as shown in the figure below Motor current This control is the forced magnetization
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70. ssible indoor unit for 30 seconds Compressor is stopped if the outdoor unit does not receive a serial signal from all indoor units ee Miswiring check opera 10 Miswiring check Compressor is stopped and miswiring check During miswiring Gon will nottrestart 4 times Yes Yes error operation ends operation automatically Lowers the operating frequency if the tem Indoor heat perature of any of indoor heat exchanger Automatically restarts 11 exchanger overheat rises high temperature during heating 9 4 p after safety time 180 No limit No No sor operation prevention control Stops the compressor if the temperature stay sec high for 2 minutes at minimum frequency Power factor mod Compressor stops if DC voltage is 450V or During compres Automatically restarts 12 ule Active Filter Omp p 9 9 after safety time 180 4 times Yes Yes higher sor operation over voltage error sec Power factor mod Automatically re starts 43 ule Active Filter Compressor stops if DC voltage is 270V or During compres tor safety time 180 4times Yes Yes low voltage error lower sor operation sec NO Function Operation Description Detection time Restart condition Restart In Out time door door Power factor mod When power frequency cannot pe At compressor Compressor continues determined startup when power
71. stop The red operation lamp flashing on the indoor unit will go off 6 Place the control box cover back in the reverse order Correction points on error detection a Are all piping the total multi air conditioner system connected b Are the stop valves open SW1 WIRE CHECK PUMP DOWN Ae AEX2M14LR CHAPTER 5 DISASSEMBLING PROCEDURE If in carrying out repairs and modifications the work requires the use of arc and flame producing apparatus such as welding brazing and soldering equipment this work shall only be started after the rooms have been thoroughly ventilated While the work is being carried out the mechanical venti lation if any shall be kept in constant operation and all windows and doors kept open In the case of repairs to parts of the refrigerant circuit it may be necessary that not only the workman but also a second person shall be present for observation and assistance Necessary protective equipment shall be available and in the case of open flames or arcs fire extinguishing apparatus shall be ready to hand Welding and brazing shall be carried out by qualified workmen 1 OUTDOOR UNIT CAUTION DISCONNECT THE UNIT FROM POWER SUPPLY BEFORE ANY SERVICING 1 PROCEDURE 4 Remove the 4 screws fixing the fan guard then remove it and remove the 7 screws fixing the cabinet then remove it 1 Remove the 2 screws fixing the pipe cover then remove it 3 screws are at the lef
72. t 2 screws are at the right 1 screw is at the front 1 screw is at the rear lt 5 Remove the 3 screws fixing the control box angle then remove it e dr CAUTION DISCHARGE ELECTROLYTIC CAPACITOR BEFORE TOUCHING THIS CAPACITOR OR OTHER COMPO NENTS OR WIRINGS 6 Cut the 2 wire fixing bands AEX2M14LR 7 Disconnect the 9 connectors 10 Unfasten the nut fixing the propeller fan then remove it Expansion valve CN12A CN12B 2pcs Remove the 5 screws fixing the control box then remove it Thermistor CN8A CN8B 2pcs 1 screw is at the right Fan motor CN3 1pc 4 screws are at the front Reverse valve coil CN4 1pc NOTE How to disassemble of control box assembly is shown in step 15 25 Display board unit CN11 1pc NOTE Caution to connectors position especially the expansion valves when reinstalling 1 8 R th B Remove the 2 screws fixing the fan motor angle assembly then Remove Me compressor remove it with lifting up as unhook the hook on the base pan Disconnect 5 terminals Remove the 3 screws fixing the fan bulkhead assembly then Coil for PFC1 L1 2pcs White remove Compressor 3pcs Red White and Orange NOTE Caution to connectors position especially the compressor when reinstalling

SERVICE MANUAL AE-X2M14LR - RB Climatizzatori Sharp Milano

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