ELECTRICAL PARTS ....................................................................................................................................... 5
MICROCOMPUTER CONTROL SYSTEM ....................................................................................................... 6
AH-N45DP2 AU-N45DP2 AH-N56DP2 AU-N56DP2 SERVICE MANUAL S3314AHN56DP2 SPLIT SYSTEM ROOM AIR CONDITIONERS INDOOR UNIT AH-N45DP2 AH-N56DP2 MODELS OUTDOOR UNIT AU-N45DP2 AU-N56DP2 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.
AH-N45DP2 AU-N45DP2 AH-N56DP2 AU-N56DP2 SPECIFICATIONS ITEMS INDOOR UNIT OUTDOOR UNIT INDOOR UNIT OUTDOOR UNIT AH-N45DP2 AU-N45DP2 AH-N56DP2 AU-N56DP2 Cooling capacity Moisture removal Liters/h Electrical data Phase – Single Rated frequency Rated voltage Rated current Cool 10.7 Rated input Cool 1.82 2.29...
AH-N45DP2 AU-N45DP2 AH-N56DP2 AU-N56DP2 MICROCOMPUTER CONTROL SYSTEM...
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CLUSTER GENERATOR FROM FAN MOTOR FB441 FB441 FB441 FB441 TO TERMINAL BOARD TOP“N” BCN101(BCN201) FROM TERMINAL BOARD TOP“1”“BLACK” FROM FAN MOTOR FROM THERMISTOR FROM CLUSTER GENERATOR FROM CLEANING SWITCH 1 FROM LOUVER MOTOR igure L-2. Printed Wiring Diagram for AH-N45DP2...
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AH-N45DP2 AU-N45DP2 AH-N56DP2 AU-N56DP2 TO TERMINAL BOARD TO TERMINAL BOARD BOTTOM“N” TOP“N” TO TERMINAL BOARD BOTTOM “L” FROM CLEANING SWITCH 2 TO TERMINAL BOARD TOP “2” FROM CLUSTER GENERATOR FROM FAN MOTOR FB441 FB441 FB441 FB441 TO TERMINAL BOARD TOP“N”...
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AH-N45DP2 AU-N45DP2 AH-N56DP2 AU-N56DP2 Microcomputer (IC1) IC1 is a CMOS, one chip, 8-bit microcomputer. Microcomputer port allocation is as follows. Pin Terminal Input Pin Terminal Input No. Name Output Function No. Name Output Function – 33 P20 CLEANING SW1 HOOT KEEP...
AH-N45DP2 AU-N45DP2 AH-N56DP2 AU-N56DP2 FUNCTIONS Operation modes Temperature control characteristic COOL operation COOL operation The compressor turns on or off, at the thermostat In the “COOL” mode, the thermostat circuit is lines C4 and C5. The outdoor fan motor is also controlled by four thermostat lines (C1 thru C5).
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AH-N45DP2 AU-N45DP2 AH-N56DP2 AU-N56DP2 Table H-1 ONE-HOUR TIMER When ONE-HOUR timer is set, the unit turns off automatically after one hour. The one hour timer Compressor Fan speed operation has priority over other time operation, such as the TIMER ON and TIMER OFF. If the Cooling zone "DH"...
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AH-N45DP2 AU-N45DP2 AH-N56DP2 AU-N56DP2 Outputs in each operation mode Table H-4 Compressor Outdoor Indoor Valve Mode Fan Motor Fan Motor Coil Cooling Circulating Cooling L/UL UL/D Dehumidiflying D/OFF Circulating Power on start If the connecting wire JP5 is shorten on the PWB...
AH-N45DP2 AU-N45DP2 AH-N56DP2 AU-N56DP2 TROUBLESHOOTING GUIDE OF CONTROL CIRCUIT The machine does not function at all with remote controller and switch on the indoor unit. Check the cleaning switch 2(1),CN9, CN8 and lead wires. Replace the cleaning switch 2(1). (or reset connector)
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AH-N45DP2 AU-N45DP2 AH-N56DP2 AU-N56DP2 The machine does not function with remote controller Push button " " on the wireless remote controller. Is transmitting Are batteries of the indicator of the remote wireless remote controller controller active ? proper ? Replace the batteries with new ones.
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AH-N45DP2 AU-N45DP2 AH-N56DP2 AU-N56DP2 The room is not cooled at all or not cooled. The compressor does not operate. Fig. 1 Temperature properties of indoor thermistors Room temperature Heat exchange thermistor TH1 thermistor TH2 Thermistor Color Connector Push the button "AUX." on...
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AH-N45DP2 AU-N45DP2 AH-N56DP2 AU-N56DP2 For AH-N56DP2 / AU-N56DP2 The room is not cooled at all or not cooled. The compressor does not operate. Push the button " AUX." on the indoor unit, for more than 5 sec. Using a tester, measure voltage at the terminals on the terminal board.
Outdoor unit Capillary tube Compressor Condenser Accumulator Figure R-1. Refrigeration Cycle for AH-N45DP2 / AH-N56DP2 Cycle temperature and service port pressure Based on 'ISO 5151 : 1994(E), condition T1' (at 220V refrigerant pipes length 7.5m) Model AH-N45DP2 AH-N56DP2 Cooling Cooling NO.
AU-N45DP2 AH-N56DP2 AU-N56DP2 DISASSEMBLING PROCEDURE FOR INDOOR UNIT MODEL [AH-N45DP2 / AH-N56DP2] CAUTION:DISCONNECT THE UNIT FROM THE POWER SUPPLY BEFORE ANY SERVICING Open the Opne panel, remove 2 Air Filters. Remove 6 screws fixing the Front panel. Open the Louver frame.unlook the hooks,and pull Remove the screw fixing the Cord holder.
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AH-N45DP2 AU-N45DP2 AH-N56DP2 AU-N56DP2 Close the Open panel. pushing the nail of the Remove a screw fixing the Control box cover. Front panel, and lift the Front panel up. Cut the fixing band and Remove the Cover B. Remove the unit-to-unit wiring from the Terminal board.
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AH-N45DP2 AU-N45DP2 AH-N56DP2 AU-N56DP2 Remove the Thermistor of the Evaporator. Cut the fixing band and Remove the Holder. Remove 2 screws fixing the Control box and Remove Connectors. remove it.
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AH-N45DP2 AU-N45DP2 AH-N56DP2 AU-N56DP2 Remove the Evaporator from the Cabinet. Remove a screw fixing the drain pan and pull Drain pan toward you. Remove 4 screws fixing the Side cover R, and pull up the Cross flow fan. Remove the Drain cover from the Evaporator.
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AH-N45DP2 AU-N45DP2 AH-N56DP2 AU-N56DP2 The Electric Control box. Remove a screw fixing the Cord holder and 2 screws fixing the Terminal board. Remove the screw fixing the Receiving filter. Remove 2 screws fixing the Transformer and pull Remove the 2 Switch and Photo detector unit.
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AH-N45DP2 AU-N45DP2 AH-N56DP2 AU-N56DP2 The LOUVER FRAME UNIT and related The DRAIN PAN and related Remove the screw fixing the FRAME GUIDE on Remove the screw fixing the Drain pan on both both side and take off the LOUVER UNIT.
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AH-N45DP2 AU-N45DP2 AH-N56DP2 AU-N56DP2 How to remove the Hi Voltage UNIT. Remove the connector of Louver motor and take off the Wire and Holder. Remove 2 screws fixing Holder. Push the one of the Vertical louver. Take off the HIGH VOLTAGE UNIT ASS’Y from How to remove the DISPLY COVER.
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AH-N45DP2 AU-N45DP2 AH-N56DP2 AU-N56DP2 FOR OUTDOOR UNIT MODEL AU-N45DP2 / AU-N56DP2 DISASSEMBLING PROCEDURE OF THE CONTROL BOX Loose 1 screw fixing the cabinet (rear side). Loose 3 screws fixing the control cover. Loose 1 screw fixing the side cover. Loose 3 screw fixing the cabinet (right side).
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AH-N45DP2 AU-N45DP2 AH-N56DP2 AU-N56DP2 Loose 1 screw fixing the rear cabinet (left side). Remove 3 terminals. Loose 3 screws fixing the bulkhead. Cut nylon band. DISASSEMBLING PROCEDURE OF THE FAN Loose the fan nut and fan can take out. Loose 1 screw fixing the control box.
AH-N45DP2 AU-N45DP2 AH-N56DP2 AU-N56DP2 REPLACEMENT PARTS LIST [AH-N45DP2 / AH-N56DP2] REF. NO. PART NO. DESCRIPTION Q'TY CODE CABINET AND UNIT PARTS 1- 1 CMOT-A415JBKZ Fan moter sub assembly 1- 3 GWAK-A270JBFA Front panel 1- 4 CHLD-A067JBK0 Bearing assembly 1- 5...
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AH-N45DP2 AU-N45DP2 AH-N56DP2 AU-N56DP2 REPLACEMENT PARTS LIST [AU-N45DP2 / AU-N56DP2] REF. NO. PART NO. DESCRIPTION Q'TY CODE CABINET AND UNIT PARTS 1- 1 LSUB-A024JBPZ Motor angle sub 1- 2 CMOTLB027JBEZ Fan motor [AU-N45DP2] 1- 2 CMOTLB028JBEZ Fan motor [AU-N56DP2] 1- 3...
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AH-N45DP2 AU-N45DP2 AH-N56DP2 AU-N56DP2 REF. NO. PART NO. DESCRIPTION Q'TY CODE SCREWS, NUT AND BOLT 6- 1 LX-BZA072JBE0 Special screw 6- 2 LX-NZ0128JBE0 Special nut 6- 3 LX-BZA140JBE0 Special screw 6- 4 LX-BZA292JBE0 Special screw 6- 5 LX-BZA166JBE0 Special screw...