DB98_14413A(1)_co 10/9/03 5:43 PM Page 3 CEILING TYPE AIR CONDITIONER INDOOR UNIT OUTDOOR UNIT FH052EAMT FH070EAMT UH052EAMT UH070EAMT SERVICE AIR CONDITIONER Manual CONTENTS 1. Product Specifications 2. Disassembly and Reassembly 3. Refrigerating Cycle Diagram 4. Set Up the Model Option 5. Control Specification & Troubleshooting 6. Exploded Views and Parts List 7. PCB Diagram 8. Wiring Diagram 9.
DB98_14413A(1)_1** 10/9/03 5:40 PM Page 1 1. Product Specifications 1-1 Table INDOOR UNIT FH052EAMT FH070EAMT OUTDOOR UNIT UH052EAMT UH070EAMT Btu/h 18,700 23,800 W 5,500 7,000 Btu/h 20,400 26,100 W 6,000 7,700 MODEL Cooling Capacity Heating ø/V/Hz 1/220 ~ 240/50 1/220 ~ 240/50 Cooling W 1,800 2,400 Heating W 1,850 2,600 Cooling A 8.0 11.0 Power Supply Power Input Running Current A 8.2 11.9 H.H r.p.m - - Hi r.p.m 1,020 1,160 Mid r.p.m 920 1,060 Low r.p.
DB98_14413A(1)_1** 10/9/03 5:40 PM Page 2 Table(cont.) INDOOR UNIT FH052EAMT FH070EAMT OUTDOOR UNIT UH052EAMT UH070EAMT MODEL R410a R410a Charge g 1,550 1,650 Adding Charge g/m 25 30 Elec.Expansion Valve Elec.Expansion Valve Type Refrigerant Control Outdoor Unit Type Slit Slit Row x Stages x Fin Pitch 2 x 28 x 1.5mm 2 x 28 x 1.5mm Heat Exchanger H mm 648 648 W mm 880 880 Dimensions Weight D mm 310 310 Net / Gross kg 67 / 72 69 / 74 Liquid mm(inch) 6.
DB98_14413A(1)_1** 10/9/03 5:40 PM Page 3 1-2 Dimensions 1-2-1 Indoor Unit (Unit : mm) 1,000 197 240 Back side 650 922 45 200 50 Pipe outlet (bottom side) Air intake hole (Ø50) Wiring hole Drain hose outlet Air flow blade(up/ down) Air flow blade(right/ left) Remote control sensor Defrosting indicator Air filter Filter sign indicator Fan indicator Auto indicator Front grille Timer indicator Operation indicator On/Off button Samsung Electronics 3
DB98_14413A(1)_1** 10/9/03 5:40 PM Page 4 Product Specifications 1-2-2 Outdoor Unit 880 4 31 0 648 (Unit : mm) Samsung Electronics
DB98_14413A(1)_1** 10/9/03 5:40 PM Page 5 2. Disassembly and Reassembly Stop operation of the air conditioner and remove the power cord before repairing the unit. 2-1 Indoor Unit No Parts 1 Electrical Part Procedure Remark 1) Open the grille by pressing 3 position. (center and both side) 2) Detach the air inlet grille. 3) Open the cover of component electrical box by removing 3 screws.
DB98_14413A(1)_1** 10/9/03 5:40 PM Page 6 Disassembly and Reassembly No Parts 2 Fan & Motor Procedure Remark 1) Detach the screw and untie earth wire of motor. 2) Disconnect of housing of motor wire. 3) Disconnect the capacitor wire.
DB98_14413A(1)_1** 10/9/03 5:40 PM Page 7 Disassembly and Reassembly No Parts Procedure Remark 4) Loosen the guard safety by removing 6 screws. 5) Detach the upper case of fan. (2EA) 6) Loosen the 4 screws what is fix the motor. 7) Detach the fan and motor assembly.
DB98_14413A(1)_1** 10/9/03 5:40 PM Page 8 Disassembly and Reassembly No Parts Procedure Remark 8) Loosen the set fixing bolts. (with a M3 wrench) 9) Detach the fan. 3 Drain Pan 1) Disconnect the display pcb wire as shown in picture. (white housing) 2) Disconnect the step motor wire as shown in picture. (blue housing) 3) Disassemble the hanger bracket by removing the 1 screw.
DB98_14413A(1)_1** 10/9/03 5:40 PM Page 9 Disassembly and Reassembly No Parts Procedure Remark 4) Loosen the 3 screws of front side. 5) Disassemble the assembly front cover part. 6) Disconnect the step motor wire as shown in picture. 7) Detach the wire clamp fixed in base part. 8) Detach the front cover assembly completely.
DB98_14413A(1)_1** 10/9/03 5:40 PM Page 10 Disassembly and Reassembly No Parts Procedure Remark 9) Loosen the screw what is fix with base part and drain pan. (upper side:2EA) 10) Loosen the screw what is fix with base part and drain pan. (lower side:2EA) 11) Detach the drain pan completely.
DB98_14413A(1)_1** 10/9/03 5:40 PM Page 11 Disassembly and Reassembly No Parts 4 Evaporator Procedure Remark 1) Disconnect the thermistor wire as shown in picture. (white housing) 2) Loosen the 2 screws shown in picture. 3) Loosen the 2 screws shown in picture and remove plastic part. (white) 4) Loosen the 2 screws shown in picture and remove steel bracket. 5) Disassemble the 4 screws steel plate in rear side of the unit.
DB98_14413A(1)_1** 10/9/03 5:40 PM Page 12 Disassembly and Reassembly No Parts Procedure Remark 6) Loosen the 2 screws as shown in picture. 7) Detach the plastic cover as shown in picture. 8) Detach the evaporator assembly.
DB98_14413A(1)_1** 10/9/03 5:40 PM Page 13 Disassembly and Reassembly No Parts 5 Stepping Motor Procedure Remark 1) Loosen the 4 screws in rear side of front cover assembly as shown in picture. 2) Loosen the 2 screws as shown in picture. 3) Disassemble the blade and stepping motor assembly and remove the 2 screws stepping motor. 6 Display PCB 1) Loosen the 3 screws in rear side of front cover assembly as shown in picture. 2) Disassemble display PCB assembly and disconnect wire.
DB98_14413A(1)_1** 10/9/03 5:40 PM Page 14 2-2 Outdoor Unit No Parts 1 Cabinet Procedure Remark 1) Turn off the unit and remove the power cable. 2) Detach the top cover. 3) Detach the control box cover. 4) Unplug the ass'y cable. 5) Detach the cabi-side. 6) Detach the cabi-front. ● Cautions When you assemble the parts, check if the each parts and component electric box are fixed firmly. 2 14 Fan Motor & Propeller Fan 1) Loosen the indicating bolt screw. 2) Disassemble the propeller fan.
DB98_14413A(1)_1** 10/9/03 5:40 PM Page 15 3. Refrigerating Cycle Diagram Indoor Unit Outdoor Unit ❋ Allowable pipe length : Max. 30m ❋ Allowable drop distance : Max.
DB98_14413A(1)_1** 10/9/03 5:40 PM Page 16 4. Set Up the Model Option 4-1 Setting Option Setup Method Option No. : Step 1 : Enter the Option Setup mode. 1st Take out the batteries of remote control. 2nd Press the temperature insert the battery again. 3rd Make sure the remocon display shown as button simultaneously and . Step 2 : Enter the Option Setup mode and select your option according to the following procedure. 1 The default value is Otherwise, push the . button to .
DB98_14413A(1)_1** 10/9/03 5:44 PM Page 17 Set Up the Model Option 7 The default value is Otherwise, push the . button to . Every time you push the button, the display panel reads or repeatedly. 7 8 Push the 8 button to set the display panel to . Every time you push the button, the display panel reads ... repeatedly. 9 10 9 Push the button to set the display panel to . Every time you push the button, the display panel reads ... repeatedly.
DB98_14413A(1)_1** 10/9/03 5:40 PM Page 18 Set Up the Model Option ■ OPTION ITEMS REMOCON SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 FH070EAMT 0 3 5 4 0 0 1 C 0 0 0 0 FH052EAMT 0 3 5 4 0 0 1 9 0 0 0 0 MODEL 18 Samsung Electronics
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 19 5. Control Specification & Troubleshooting 5-1 Operation Specification 5-1-1 Tracking process marked on display part 4-1-1 • Left numeral is an address that outdoor unit transfers communication. - - - ... - Left Right (Calling indoor unit) 4-1-1 • Right numeral marks address that is answered. 4-1-1 • During the tracking, left calls indoor unit through - and checks. At this time ...
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 20 Control Specification & Troubleshooting 5-1-3 Setting Up Option Switches ■ KEY ■ Dispaly K2 K4 DIS 1 DIS 2 DISPLAY MODE CHECK MODE RESET K1 SEG 1 SEG 2 SEG 3 SEG 4 K3 ■ Summary of KEY functions Function K4 K3 K2 K1 Number (Displayed on SEG 3, 4) (Displayed on SEG 3, 4) (Displayed on SEG 3, 4) (Displayed on SEG 3, 4) of press times 1 Adding refrigerant at heating mode Adding refrigerant at cooling mode Reset Displays data 2 Test operation at heat
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 21 Control Specification & Troubleshooting 5-1-4 Wired remote controller display specification at error occurring Display Description Communication error when there is no signal from outdoor unit to wired remote controller. Remarks Communication error In case of no signal for 2 minutes Communication error when there is no answer from wired remote controller to indoor unit.
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 22 5-2 Troubleshooting When error occurs in air conditioner, error code is displayed on indoor unit display lamp and outdoor unit. 5-2-1 Indoor unit LED error diagnosis ■ Error detection and reoperation ■ ● If error occurs during the operation, badness is indicated by LED flickering and all operation is stopped except LED. ■ ● When reoperating by remote controller and switch determine the error mode after normal operation.
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 23 Control Specification & Troubleshooting 5-2-2 Outdoor unit display specification at error occurring Display No DIS1 DIS2 Description 1 High discharge temperature(Protection control) 2 High condensor temperature(Protection control) 3 Reverse phase detection error (Protection control) 4 Compressor stop due to frozen evaporator of indoor unit (every times) 5 Error of momentary power failure(Disappears when the unit is Off/On) 6 During the defrosting
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 24 5-3 Sequence for trouble diagnosis 5-3-1 Outdoor temperature sensor(OPEN/SHORT) Outdoor unit display Er → t1 (Outdoor temperature sensor OPEN/SHORT error) (Operation) Indoor unit display How to determine Reason of error (Timer) (Airflow) (Filter) Disconnection and short of outdoor temperature sensor Disconnection or leak of applied sensor Is not separated the out temperature sensor connector from PCB?(CN41) No Reoperation after connection to connector P
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 25 Control Specification & Troubleshooting 5-3-2 Outdoor heat exchanger temperature sensor error(OPEN/SHORT) Outdoor unit display Er → t2 (Outdoor heat exchanger temperature sensor error(OPEN/SHORT) (Operation) Indoor unit display How to determine Reason of error (Timer) (Airflow) (Filter) Disconnection and short of outdoor heat exchanger temperature sensor Disconnection or leak of Applied sensor Is not separated the out heat exchanger temperature sensor co
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 26 Control Specification & Troubleshooting 5-3-3 Outdoor discharge temperature sensor error(OPEN/SHORT) Outdoor unit display Er → t3 (Outdoor discharge temperature sensor OPEN/SHORT error) (Operation) Indoor unit display How to determine Reason of error (Timer) (Airflow) (Filter) Disconnection and short of outdoor heat exchanger temperature sensor Disconnection or leak of Applied sensor Is not separated the outdoor discharge temperature sensor connector fro
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 27 Control Specification & Troubleshooting 5-3-4 Communication error during the operation Outdoor unit display Er → E1 (Communication error during the operation) (Operation) Indoor unit display Disconnection and short of communication lines Reason of error (Timer) (Airflow) (Filter) Disconnection and short of outdoor heat exchanger temperature sensor Disconnection or leak of Applied sensor To check the display after pressing the reset key on outdoor PCB Mu
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 28 Control Specification & Troubleshooting 5-3-5 Communication error between indoor and outdoor after initial power input.
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 29 Control Specification & Troubleshooting 5-3-6 Indoor floating switching error Outdoor unit display Er → E3 (Indoor floating switching error ) (Operation) Indoor unit display How to determine (Timer) (Airflow) (Filter) The status continues over 1 minute that indoor unit floating switch is opened.
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 30 6. Exploded Views and Parts List 6-1 Indoor Unit 24 26 30 39 29 38 41 28 4 5 27 17 2 40 42 18 1 19 8 9 10 20 35 11 12 22 6 31 32 23 16 3 34 13 21 43 25 7 36 37 33 45-7 45-6 45-3 15 45-4 45-5 45-2 45-8 45 45-1 14 44 You can search for the updated part code number through the ITSELF. URL : http://itself.sec.samsung.co.
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 31 Exploded Views and Parts List ■ Parts List No. Code No.
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 32 Exploded Views and Parts List ■ Parts List(cont.) No. Code No.
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 33 MEMO Samsung Electronics 33
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 34 6-2 Outdoor Unit 20 1 2 21 22 15 23 16 5 4 24 8 13 25 9-7 9-1 9-3 10 3 11 9-6 9 9-2 9-5 14 12 9-4 17 19 26 18 6 7 34 Samsung Electronics
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 35 Exploded Views and Parts List ■ Parts List No. Code No. Description Q'TY Specification UH052EAMT UH070EAMT 1 DB90-01363A ASS'Y-COVER TOP ASS'Y 1 1 2 DB90-01293A ASS'Y CABI-FRONT ASS'Y,LOGO 1 1 3 DB67-00140A FAN-PROPELLER AS+GF20%,OD460,3BLADE 1 1 1 4 DB61-01167A BRACKET-MOTOR SGCC-M,T1.6 1 5 DB67-00261A PARTITION SGCC-M,T0.
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 36 7.
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 37 PCB Diagram ■ Parts List Location No. Description Specification Q'TY D904,D909,D914,D919 DIODE-SWITCHING 1N4148,100V,200mA,DO-35,TP 4 D900~D903,D905~D913 DIODE-SWITCHING RLS4148,100V,450mA,LL-34,TP 17 D105 DIODE-RECTIFIER 1N4007,1000V,1A,DO-41,TP 1 BD71 DIODE-BRIDGE DF06S,600V,1A,SMD-4,TP 1 CD31,CD32 DIODE-TVS SAC5.0,7.
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 38 PCB Diagram ■ Parts List(cont.) Location No. Description Specification Q'TY BZ61 BUZZER-PIEZO 85DB,12V,-,2.0KHZ,ST 1 SW03~SW05 SWITCH-DIP 5V DC,100mA,SLIDE,- 3 R78,R79,RY72 RELAY-MINIATURE 12VDC,200MW,3000MA,1FORMA,10MS,10M 3 RY73~RY76 RELAY-MINIATURE 12VDC,200MW,5000MA,1FORMA,10MS,5MS 4 RY01 RELAY-MINIATURE 12V,-,11.7MA,DPDT,4MS,4MS 1 FUSE-CARTRIDGE 250V,3.15A,TIME-LAG,GLASS,5x20mm 1 F702 FUSE 250V,1.6A,TIME-LAG,PLASTIC,8.4x7.
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 39 7-2 Outdoor Unit (Code No:DB93-01855D;UH052EAMT / DB93-01855E;UH070EAMT) ■ TOP ■ BOTTOM ✳ The figure of PCB Pattern is common UH052EAMT and UH070EAMT. ✳ Only part list is different from between UH052EAMT and UH070EAMT.
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 40 PCB Diagram ■ Parts List(UH052EAMT) Location No. Description Specification Q'TY D201,D901~D916 DIODE-SWITCHING RLS4148,100V,200MA,SOD-80C,TP 17 D101~D105 DIODE-RECTIFIER 1N4007,1000V,1A,DO-41,TP 5 CD31~CD32 DIODE-TVS SAC5.0,7.
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 41 PCB Diagram ■ Parts List(UH052EAMT)(cont.) Location No. Description Specification Q'TY CN31 CONNECTOR-HEADER 1WALL,2P,1R,3.96mm,STRAIGHT,SN 1 CN77 CONNECTOR-HEADER 1WALL,2P,1R,7.92mm,STRAIGHT,SN,WH 1 CN72 CONNECTOR-HEADER 1WALL,3P,1R,7.92mm,STRAIGHT,SN,BL 1 CN73 CONNECTOR-HEADER 1WALL,3P,1R,7.92mm,STRAIGHT,SN,WH 1 CN75 CONNECTOR-HEADER 1WALL,4P,1R,7.
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 42 PCB Diagram ■ Parts List(UH070EAMT) Location No. Description Specification Q'TY D201,D901~D916 DIODE-SWITCHING RLS4148,100V,200MA,SOD-80C,TP 17 D101~D105 DIODE-RECTIFIER 1N4007,1000V,1A,DO-41,TP 5 CD31,CD32 DIODE-TVS SAC5.0,7.
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 43 PCB Diagram ■ Parts List(UH070EAMT)(cont.) Location No. Description Specification Q'TY CN31 CONNECTOR-HEADER 1WALL,2P,1R,3.96mm,STRAIGHT,SN 1 CN77 CONNECTOR-HEADER 1WALL,2P,1R,7.92mm,STRAIGHT,SN,WH 1 CN72 CONNECTOR-HEADER 1WALL,3P,1R,7.92mm,STRAIGHT,SN,BL 1 CN73 CONNECTOR-HEADER 1WALL,3P,1R,7.92mm,STRAIGHT,SN,WH 1 CN75 CONNECTOR-HEADER 1WALL,4P,1R,7.
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 44 8. Wiring Diagram 8-1 Indoor Unit This Document can not be used without Samsung's authorization.
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 45 8-2 Outdoor Unit ■ UH052EAMT This Document can not be used without Samsung's authorization.
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 46 Wiring Diagram ■ UH070EAMT This Document can not be used without Samsung's authorization.
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 47 9. Schematic Diagram 9-1 Indoor Unit This Document can not be used without Samsung's authorization.
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 48 9-2 Outdoor Unit ■ UH052EAMT This Document can not be used without Samsung's authorization.
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 49 Schematic Diagram ■ UH070EAMT This Document can not be used without Samsung's authorization.
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 50 MEMO 50 Samsung Electronics
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 51 MEMO Samsung Electronics 51
DB98_14413A(1)_1** 10/9/03 5:41 PM Page 52 UPDATE LOG SHEET Application date Page Part# Note(Cause & Solution) Use this page to keep any special servicing information. (Service Bulletin, etc.) If only parts number changes, Just change parts number directly on parts list. And if you need more information, please see the service website. Itself Solution Integrated technology supporting electronic library http://itself.sec.samsung.co.kr Copyright © 2002 By Samsung Electronics Co., Ltd.
DB98_14413A(1)_co 10/9/03 5:43 PM Page 2 ELECTRONICS This Service Manual is a property of Samsung Electronics Co., Ltd. Any unauthorized use of Manual can be punished under applicable International and/or domestic law. © Samsung Electronics Co., Ltd. Oct. 2003. Printed in Korea. Code No.
