Page 1: Table Of Contents
PACKAGED AIR CONDITIONER A P H 4 5 0 P G Manual SERVICE AIR CONDITIONER CONTENTS 1. Pre c a u t i o n s 2. Product Specifications 3. Operating Instructions and I n s t a l l a t i o n 4.
Page 3: Precautions
As the repair of the unit involves a lot of dangerous elements, do not allow children to approach nearby during repair work. Cleaning Upon completion of the repair, clean the air conditioner and surrounding area, and inform the customer of completion of the repair. Samsung Electronics...
Page 4 M E M O Samsung Electronics...
Page 5: Product Specifications
2. Product Specifications 2-1 Table Model APH450PG ITEM Indoor unit Outdoor unit ø/V/Hz 3 / 380 / 50 Power source Capacity kcal/h 11,250 / 12,200 BTU/h 45,000 / 48,800 (Cooling/Heating) Aux. heater Watt/h 3,000 5,000 / 4,700 Power consumption E.E.R (Cooling/Heating) kcal/Wh 2.25 / 2.60...
Page 6 2-2 Dimensions Unit : mm Samsung Electronics...
Page 7: Operating Instructions And
Low, medium, high lamp Selection of airflow Left-right lamp Current temperature Indoor temperature display Desired temperature Desired temperature display Fan speed diagram Low, medium, high, turbo lamp Convenience reservation Reserve lamp and reserve time display Current time Current time display Samsung Electronics...
Page 8 The heater is not operating when the switch is selected to the off position. * Operating functions Time/Temperature Fan Speed Fan Speed Remote control display adjustment Operating Light display On/Off Button Sensor Power Light Operating Mode Selection Auxiliary Heater Timer Time/Temperature Time or Temperature Switch (option) adjustment Selection adjustment Samsung Electronics...
Page 9 Wire of sensor (2 strand) Cable tie Power cable Piping box Putty Drain hose Pipe band Piping box Finishing tape Rubber cabi slot Insulation tape Rubber cabi hole Insulation tube for indoor Drain plug out unit piping connection Samsung Electronics...
Page 10: Installation
* The outdoor unit should be installed in accordance with the service space. Above 15cm Above 50cm Space for piping Above 50cm and wiring Above 30cm Above 15cm Space for piping Above 15cm and wiring The air outlet faces toward the wall. The air inlet faces toward the wall. Samsung Electronics...
Page 11 * Be sure to fix wires from/to the indoor and outdoor unit on the piping insulated. Avoid wires contact to bare pipe or valve directly without any insulated spacer. * Must be use the approval wire according to IEC or EN requirement. Samsung Electronics...
Page 12 6. After completion of the installation, check the connecting area for any gas leakage. 7. Wind a finish tape when the wiring of the refrigerant pipe, the unit, and the drain piping are com- p l e t e d . Outdoor unit checking area Indoor unit checking area Samsung Electronics...
Page 13 Then tighten it again using the spanner in the direction as shown in the figure . Outer Diameter Tightening Torque Final Torque Remarks ø 9.52mm 400 kg • cm 450 kg • cm ø 19.05mm 700kg • cm 750kg • cm Samsung Electronics...
Page 14 When you hit the area for piping connection slightly with a hammer, a hole is made. - If there is any reason to change connection, fill in hole with ruber cabi slot. Holes for piping connection (2 points) Samsung Electronics...
Page 15 2 . Remove the nut fastened to the leg holder, and then insert the leg holder into the hole of the outdoor unit leg. 3 . Fix the unit securely with the nut. Outdoor unit leg Leg holder Foot holder Samsung Electronics...
Page 16 3 seconds to drain the gas out. Repeat this procedure three times. Liquid side Gas side Open the valve cock of valve(B) and valve(A) completely.a 3-Way valve 3-Way valve Close the cap of each valve. Outdoor unit Check the valve for leakage. 3-10 Samsung Electronics...
Page 17: Outdoor Unit
OUTDOOR UNIT Gas pipe side Close the gas pipe side valve, and loosen the pressure gauge connected. Then open the gas pipe side valve again. Liquid pipe side Tighten the cap of each valve using a specified tool. 3-11 Samsung Electronics...
Page 18 1. Check the piping connection area for any gas leakage. Outdoor connection area Indoor connection area 2. Is the drain hose properly connected? Drain hose Indoor and outdoor connection 3. Is the insulation of the piping in good condition? 4. Is grounding properly made? Insulation 3-12 Samsung Electronics...
Page 19 3. Be sure to perform the test operation after installation. It is easy to start the test operation in winter if you increase the sensor temperature to 23°C ~ 25°C by holding the indoor temperature sensor. (Cooling operation) Temperature Sensor 3-13 Samsung Electronics...
Page 20 M E M O 3-14 Samsung Electronics...
Page 21: Disassembly And Reassembly
Main PCB 1) Separate the PCB connect wire after separating the control box cover. 2) Separate the connection wire to separate the front cover and duct. 3) The main PCB should be separated by turn over the mountain tab. Samsung Electronics...
Page 22 Disassembly and reassembly Parts Procedure Remarks Front cabi 1) The front cabi should be separated by giving strength downward after loosening 2 screws at the lower end. Plate top 1) The plate top should be separated by loosen- ing screws. Samsung Electronics...
Page 23 2) Then the ass’y grille out should be separated by giving strength upward ( ↑ ). Ass’y Blower in 1) First loosen the 4 screws at left and right sides. 2) Then the ass’y duct should be separated by lifting it. Samsung Electronics...
Page 24 Procedure Remarks Evaporator 1) First separate the cover after loosening the screws fixed at evap cover R. 2) Then separate the 3 screws fixed at cabinet BKT of evaporator BKT. 3) Evaporator should be separated by flinging ahead. Samsung Electronics...
Page 25 3) Then the screws binding the holder top blow- er and duct should be separated. 4) The duct of one side should be separated as the picture shows after loosening the upper binder. 5) The binder of the motor and the duct should be separated. Samsung Electronics...
Page 26 6) Then the motor should be separated. 7) The bracket fixed at the motor should be sep- arated. Panel PCB 1) Should be separated after loosening the insu- lating material and binders at the back of the front side. Samsung Electronics...
Page 27 1) Packaged air conditioner outdoor unit 2) The binders of the front side should be sepa- rated. 3) The flank and the binders should be separat- ed from each other. Control box 1) Connect distributed wires in the control box. Samsung Electronics...
Page 28 M E M O Samsung Electronics...
Page 29: Troubleshooting
Short of heater temperature sensor Check of heater wiring diagram Open of heater temperature sensor Check of sensor attachment location When the electrical heater is over heated Check of heater temperature sensor departure Check of PCB open/shore Replacement of sensor Samsung Electronics...
Page 30 Is the output wave at IC2 pin No. 11~18 a square wave? Check and replace the IC2. Is the harness between the main PCB and panel PCB well Reassemble or replace the harness connected? after checking it. LED display or panel PCB defective. Samsung Electronics...
Page 31 DC pin No. 11, 12, 12V? and 13? Is the voltage at both ends/of indoor fan motor AC 187V~253V? Then check the wiring harness for open. Check and replace the indoor fan motor. Samsung Electronics...
Page 32 Then check the wiring of indoor and Then AC 187V~253V? check the wiring of indoor and or open. Then check and replace the Is the voltage at both ends/of the electronic contactor terminal AC 187V~253V? electronic contactor Replace the compressor. Samsung Electronics...
Page 33 Is the unit normally operated when pressing the on/off Then replace the remote control. button after replacing the bettery? Is the receiving wave of the MICOM(IC1) No.24 a square wave? Then replace the receiver module. Check and replace the MICOM(IC1). Samsung Electronics...
Page 34: Pcb Inspection
1. Heat operation AC187V~AC253V? (When selecting each 2. Set the desired temperature at a fan speed) sufficiently lower level than the 2) The indoor fan motor does not turn. current temperature. Samsung Electronics...
Page 35 M E M O Samsung Electronics...
Page 36: Exploded Views And Parts List
6. Exploded Views and Parts List 6-1 Indoor Unit Samsung Electronics...
Page 37: Samsung Electronics
DB61-40037A HOLDER-BLADE ZN-DC1, -, -, SAH-165CH DB66-30070A BLADE-H SECC-P, T0.5, 230, - 33~39 ASS’Y DB94-30143C ASS’Y BLOWER IN APH450PG, 6uF DB61-40233A HOLDER-TOP BLOWER SGCCM, T2.0, -, AP-1100 DB90-40112B ASS’Y-CASE DUCT R AP-1100, T0.8 DB63-10431A COVER-BELL MOUTH SGCCM, T0.8, -, -, M, AP-1100 DB90-40112A ASS’Y CASE DUCT L...
Page 38 6-2 Outdoor Unit 6-2-1 Outdoor Unit Samsung Electronics...
Page 39 “ Non-heater model DB93-40272A PARTITION T1, -, 389.17°ø1239.46 DB67-30025A ASSY-BASE OUT AP-3508, M8 WELD BOLT DB99-10114A ASSY VALVE 3/8" CHECK APH450PG DB99-10115A ASSY-4 WAY V/V APH450PG DB90-10071B ASSY-CABI OUT LW SD SECC-P(20/20), T0.8 DB90-10085B ASSY-CABI OUT UP SD SECC-P(20/20), T0.8...
Page 40 6-2-2 ASS’Y CONTROL BOX Parts List CODE NO Description Specification Q’ty Remark DB93-40419A ASS'Y CONTROL BOX OUT SGCC-M, Z(Z=22) 2501-001098 CAPACITOR OUT 450VAC 4uF DB34-90089A MAGNET-CONTACTOR 42AF35AL DB65-40022A TERMINAL BOARD 600V 35, 15A DB34-90090A MAGNET-CONTACTOR 42AF35ALPM Heater only DB47-90121A FILTER-NOISE PC4-F05 Samsung Electronics...
Page 41 6-3 Remote Control Parts List CODE NO Description Specification Q’ty Remark DB93-30026K ASS’Y-REMOCON AR-H60 DB61-10022A CASE-REMOCON(UPP) DB61-10011A CASE-REMOCON(LW) DB73-20013A RUBBER(BT) DB93-10509A ASS’Y-REMOCON PCB APH450PG DB64-40008J WINDOW-REMOCON PC T1.5 DB63-10081A COVER BATTERY Samsung Electronics...
Page 42 M E M O Samsung Electronics...
Page 43: Block Diagrams
•Selector of Heater On/Off Workload operation Function selector •Indoor fan motor - low, medium, high, Heat turbo Cool •Left-right motor •Compressor •Outdoor fan motor Turbo •4-way valve Temperature control: Electric circuit(DC+5V) low, high Electric circuit(DC+12V) Electric transformer Electric power input Samsung Electronics...
Page 44: Refrigerating Cycle Block Diagram
UseTemp. Condition (°C) STD Pressure Operating Condition (kg/cm2G) Indoor Outdoor (GAS SIDE) Standard 4.5~5.5 40~45 9~12 Cooling Max over load 6.5~7.5 50~55 14~18 Low temp 30~35 Standard 18.5~20.5 32~36 65~75 Heating Max over load 36~40 70~80 Deice 28~32 40~45 Samsung Electronics...
Page 45 M E M O Samsung Electronics...
Page 46: Pcb Diagrams
8. PCB Diagrams 8-1 Ass’y Main PCB (Code No : DB93-10519A, B) Samsung Electronics...
Page 47 PCB Diagrams PARTS LIST CODE NO DESIGN LOCATION Description Specification APH450PG Remark DE62-30031A HEAT SINK(L) AL6063 T16.8 W23.5 L30 SK1, SK4 DE47-30019A SPARK-KILLER ESQ-1201 F701, F702 3601-001094 FUSE FST 250V 5A 20mm F101 DB47-90053A FUSE FST 250V 2.0A 20mm VAR1...
Page 48 8-2 Ass’y Panel PCB(Code No : DB93-10520A, B) Samsung Electronics...
Page 49 DIODE SW 1N4148 1.2V DB07-10050A LED LAMP LTL-4212 RED T P10.0 DE07-20142A LED DISPIAY SSG-9405T-01 SW1-SW4, SW6-SW8 DB34-90082A SW-TACT KPT-1115D 3408-000326 SW-SLIDE 3711-000570 CONNECTOR-WAFER SMAW250-10-WHT 3711-001111 CONNECTOR-WAFER SMAW250-08-WHT 3711-001147 CONNECTOR-WAFER SMAW250-09-WHT 3710-000193 CONNECTOR-WAFER BH250-04R WHT 3711-000940 CONNECTOR-WAFER YFAW205-304R WHT Samsung Electronics...
Page 50 M E M O Samsung Electronics...
Page 51: Wiring Diagrams
FAN MOTOR DRIVE RELAY ( T U R B O ) RY 7 OUTDOOR FAN DRIVE RELAY RY 8 4 WAY V/V DRIVE RELAY RY 1 1 H E ATER DRIVE RELAY H E AT E R P. T.C. HEAT E R Samsung Electronics...
Page 52 C 1 , 2 C A PACITOR OUT N . F. B CIRCUIT BREAKER 25A 6 3 H HIGH-PRESSURE SWITCH FM1, 2 FAN MOTOR OUT N / F NOISE FILT E R * USE 25AMPS TIME DELAY FUSE OR CIRCUIT BREAKER Samsung Electronics...
Page 53 And if you need more information, please see the service bulletin Copyright Tr a d e m a r k s Samsung is a registered trademark and ®œ 1995 by Samsung Electronics Co., Ltd. SyncMaster 17GLi/CMG7387L and All rights reserved. MacMaster...
Page 54: Schematic Diagrams
10. Schematic Diagrams 10-1 Indoor Unit 10-1 Samsung Electronics...

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