DB98_14088A(1)_CO 7/10/03 2:14 PM Page 2 CASSETTE TYPE AIR CONDITIONER INDOOR UNIT OUTDOOR UNIT KH026EAM KH035EAM UH026EAM UH035EAM SERVICE AIR CONDITIONER Manual CONTENTS 1. Product Specifications 2. Disassembly and Reassembly 3. Block Diagrams 4. Control Specification and 4. Troubleshooting 5. Exploded Views and Parts List 6. Wiring Diagrams 7.
DB98_14088A(1)_1 7/10/03 2:13 PM Page 1 1. Product Specifications 1-1 Table INDOOR UNIT KH026EAM KH035EAM OUTDOOR UNIT UH026EAM UH035EAM MODEL Cooling W 2,800 3,500 Heating W 2,900 3,800 AC 220~240V, 50Hz AC 220~240V, 50Hz Capacity Power supply Power input Cooling / Heating W 3,500 / 1,200 3,800 / 1,250 Running current Cooling / Heating A 4.5 / 4.2 5.4 / 5.7 Hi r.p.m. 1,070 1,210 Med r.p.m. 1,000 1,140 Low r.p.m. 930 1,070 Hi m3/min 6.84 8.61 Med m3/min 6.
DB98_14088A(1)_1 7/10/03 2:13 PM Page 2 Table(cont.) INDOOR UNIT KH026EAM KH035EAM OUTDOOR UNIT UH026EAM UH035EAM MODEL Outdoor unit Dimensions Weight (H x W x D) mm 525 x 740 x 230 525 x 740 x 230 kg Net / Gross 38.5 / 40 28 / 31 Liquid mm(inch) 6.35 (1.4") 6.35 (1.4") Gas mm(inch) 9.52 (3.8") 9.52 (3.8") Flare Flare Pipe O.D. size Piping Connection method Height m Max. 15 Max. 15 Pipe length m Max. 30 Max.
DB98_14088A(1)_1 7/10/03 2:13 PM Page 3 1-2 Dimensions 1-2-1 Indoor Unit (Unit : mm/inch) Samsung Electronics Remark Name No. 1 Liquid pipe connection ø6.35(1.4") Nipple 2 Gas pipe connection ø9.52(3.
DB98_14088A(1)_1 7/10/03 2:13 PM Page 4 Product Specifications 1-2-2 Outdoor Unit (Unit : mm) 11 506 20 270 230 525 740 1-4 57 Samsung Electronics
DB98_14088A(1)_1 7/10/03 2:13 PM Page 2-1 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 ! Front Grille & Filter Procedure Remark 1) Open the Front-Grille by pushing the tabs on the grille. IMPORTANT You must give attention when disassembling the Front-Grille and must check the safety clips have been installed. If you don't ensure them, the Front Grille will drop suddenly and you will be hurt.
DB98_14088A(1)_1 7/10/03 2:13 PM Page 2-2 Disassembly and Reassembly No Parts @ Front Panel Procedure Remark 1) Disassemble the 6 screws holding the panel as shown picture. 2) Separate the Front-Panel pressing the two hooks on the both sides of the indoor unit.
DB98_14088A(1)_1 7/10/03 2:13 PM Page 2-3 Disassembly and Reassembly No Parts # Ass'y Drain Panel Procedure Remark 1) Disassemble 4 screws for Ass'y Drain Panel around as shown in pictures. 2) Separate Ass'y Drain Panel as shown in Pictures.
DB98_14088A(1)_1 7/10/03 2:13 PM Page 2-4 Disassembly and Reassembly No Parts $ Ass'y Control In Procedure Remark 1) Separate the control cover after disassembling 2 screws as shown in pictures. 2) Separate the wire connection part of the Ass'y Main PCB as shown in picture.
DB98_14088A(1)_1 7/10/03 2:13 PM Page 2-5 Disassembly and Reassembly No Parts Procedure Remark 3) Disassemble 2 screws of Case Control as shown in pictures. 4) Disassemble 1 indicating screw. 5) Separate Ass'y Case Control part pulling up.
DB98_14088A(1)_1 7/10/03 2:13 PM Page 2-6 Disassembly and Reassembly No Parts Procedure Remark 6) Disassemble 1 indicating screw and separate earth cable. 7) Disassemble 1 indicating screw and separate terminal cover as shown in pictures. 8) Disassemble 2 indicating screws as shown in pictures.
DB98_14088A(1)_1 7/10/03 2:13 PM Page 4-1 Disassembly and Reassembly No Parts Procedure Remark 9) Disassemble 2 indicating screws of earth cable and 1 indicating screws of Base Terminal. 10) Separate Base Terminal as shown in picture.
DB98_14088A(1)_1 7/10/03 2:13 PM Page 4-2 Disassembly and Reassembly No Parts Procedure % Ass'y Drain Panel Sub 1) Separate Ass'y Drain Panel Sub after disassemble 2 screws both side of it. ^ Ass'y Evap 1) Disassemble 4 screws of Ass'y Evap around. Remark 2) Disassemble 2 indicating screws as shown in picture and separate Ass'y Cabi Side LF B.
DB98_14088A(1)_1 7/10/03 2:13 PM Page 4-3 Disassembly and Reassembly No Parts Procedure Remark 3) Separate Ass'y Evap pulling up from the indoor unit as shown in picture. & Ass'y Cross Fan 1) Disassemble 3 screws of cover fan motor and separate cover fan motor. 2) Separate Ass'y Cross Fan as shown in picture. * Ass'y Drain Pump 1) Disassemble 4 indicating screws as shown in picture. 2) Separate drain hose and separate Ass'y Drain Pump as shown in pictures.
DB98_14088A(1)_1 7/10/03 2:13 PM Page 4-4 2-2 Outdoor Unit No Parts ! Cabinet Procedure 1) Turn off the unit and remove the power cable. 2) Remove the top cover. 3) Remove the control box cover. 4) Unplug the ass'y cable. 5) Remove the cabi-side. 6) Remove the cabi-front. ● @ 2-10 Fan Motor & Propeller Fan Remark When you assemble the parts, check if the each parts and electric connectors are fixed firmly. 1) Do Procedure ! above. 2) Remove the nut flange.
DB98_14088A(1)_1 7/10/03 2:13 PM Page 3-1 3. Block Diagrams 3-1 Refrigerating Cycle Block Diagrams ❋ Allowable pipe length : Max. 30m ❋ Allowable drop distance : Max.
DB98_14088A(1)_1 7/10/03 2:13 PM Page 3-2 4. Control Specification & Troubleshooting 4-1 Operation Specification 4-1-1 Initial tracking(Communication check)-E2 indicated if abnormal 1. After input power, outdoor MICOM check the indoor unit installed on the same system and wired remote controller, transmitter etc.(Tracking) Left Right ■ Tracking process marked on display part • Left numeral is an address that outdoor unit transfers communication. (Calling indoor unit) ...
DB98_14088A(1)_1 7/10/03 2:13 PM Page 3-3 Control Specification & Troubleshooting 4-1-2 Wired remote controller display specification at error occurring Display Description Remarks Communication error when there is no signal from outdoor unit to wired remote controller. Communication error In case of no signal for Communication error when there is no answer from wired remote controller 2 minutes to indoor unit.
DB98_14088A(1)_1 7/10/03 2:13 PM Page 3-4 4-2 Troubleshooting When error occurs in air conditioner, error code is displayed on indoor unit display lamp and outdoor unit. 4-2-1 Indoor unit LED error diagnosis ■ Error detection and re operation • 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_14088A(1)_1 7/10/03 2:13 PM Page 3-5 Control Specification & Troubleshooting 4-2-2 Outdoor unit display specification at error occurring Display NO Description DIS1 1 High discharge temperature(Protection control) 2 High condenser 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 operati
DB98_14088A(1)_1 7/10/03 2:13 PM Page 3-6 4-3 Sequence for trouble diagnosis 4-3-1 The freezing of indoor unit heat exchanger Er → P5 (Detection for the indoor unit freezing) Outdoor unit display Indoor unit display (Operation) (Timer) (Airflow) (Filter) T_COIL ≤ C x T_AIROUT-a & T_COIL ≤ -5˚C (The status that time continues for 5 minutes) Pipe sensor temperature of outdoor heat exchanger : T_COIL Outdoor temperature : T_AIROUT C : the open air constant If T_AIROUT < 0˚C → 0.8 T_AIROUT ≥ 0˚C → 0.
DB98_14088A(1)_1 7/10/03 2:13 PM Page 3-7 Control Specification & Troubleshooting 4-3-2 Out temperature sensor Outdoor unit display Indoor unit display Er → t1 (Out temperature sensor OPEN/SHORT error) (Operation) (Timer) (Airflow) (Filter) Disconnection and short of out temperature sensor How to determine Disconnection or leak of applied sensor Reason of error Is not separated the out temperature sensor connector from PCB?(CN41) YES NO Re-operation after connection to connector PCB To meas
DB98_14088A(1)_1 7/10/03 2:13 PM Page 3-8 Control Specification & Troubleshooting 4-3-3 Out heat exchanger temperature sensor Outdoor unit display Indoor unit display Er → t2 (Out heat exchanger temperature sensor error(OPEN/SHORT) (Operation) (Timer) (Airflow) (Filter) Disconnection and short of out heat exchanger temperature sensor How to determine Disconnection or leak of Applied sensor Reason of error Is not separated the out heat exchanger temperature sensor connector from PCB?(CN41) YES
DB98_14088A(1)_1 7/10/03 2:13 PM Page 3-9 Control Specification & Troubleshooting 4-3-4 Outdoor discharge temperature sensor error(OPEN/SHORT) Outdoor unit display Indoor unit display Er → t3 (Outdoor discharge temperature sensor OPEN/SHORT error) (Operation) (Timer) (Airflow) (Filter) Disconnection and short of out heat exchanger temperature sensor How to determine Disconnection or leak of Applied sensor Reason of error Is not separated the outdoor discharge temperature sensor connector from P
DB98_14088A(1)_1 7/10/03 2:13 PM Page 3-10 Control Specification & Troubleshooting 4-3-5 Communication error during the operation Outdoor unit display Indoor unit display Er → E1 (Communication error during the operation) (Operation) (Timer) (Airflow) (Filter) In case that the communication is not available for 2 minutes during operation between indoor and outdoor unit How to determine Reason of error Communication error between indoor unit and outdoor unit To check the display after pressing th
DB98_14088A(1)_1 7/10/03 2:13 PM Page 5-1 Control Specification & Troubleshooting 4-3-6 Communication error between indoor and outdoor after initial power input.
DB98_14088A(1)_1 7/10/03 2:13 PM Page 5-2 Control Specification & Troubleshooting 4-3-7 Indoor floating switching error Outdoor unit display Indoor unit display Er → E3 (Indoor floating switching error ) (Operation) (Timer) (Airflow) (Filter) The status continues over 1 minute that indoor unit floating switch is opened.
DB98_14088A(1)_1 7/10/03 2:13 PM Page 6-1 Control Specification & Troubleshooting ■ Indoor floating switching error (cont.
DB98_14088A(1)_1 7/10/03 2:13 PM Page 6-2 5. Exploded Views and Parts List 5-1 Indoor Unit 1 24 3 23 3-1 2 9 10 22 11 8 12 13 4 7 14-2 6 14 5 14-1 15 18 16 17 20 19 21 You can search for the updated part code number through the ITSELF. URL : http://itself.sec.samsung.co.
DB98_14088A(1)_1 7/10/03 2:13 PM Page 6-3 Exploded Views and Parts List ■ Parts List Q'TY No. Code No. Description Specification KH026EAM KH035EAM 1 DB90-00588B ASS'Y CABI IN ASS'Y 1 1 2 DB61-00364A HOLDER DRAIN PUMP Fire-Resistant P.S(V0) 1 1 3 DB67-00114A DRAIN PUMP SAUERMANN 1 1 3-1 DB67-00285A DRAIN HOSE-SOCKET POM 1 1 4 DB69-00298A CUSHION BODY EPS 1 1 5 DB61-00363A CASE-FAN SIDE Fire-Resistant P.
DB98_14088A(1)_1 7/10/03 2:13 PM Page 6-4 5-2 1-Way Cassette Type (Panel) 4 1 5 2 3 6 7 8 9 10 11 ■ Parts List Q'TY No. Code No.
DB98_14088A(1)_1 7/10/03 2:13 PM Page 6-5 5-3 Outdoor Unit 18 9 7 9-11 9-1 6 9-2 9-12 17 9-3~9-10 1 1-2 1-1 11 16 15 9-14 9-13 14 12 8 13 3 5-4 4 5-5 10 5-2 2 5-3 5 5-1 Samsung Electronics 5-4
DB98_14088A(1)_1 7/10/03 2:13 PM Page 6-6 Exploded Views and Parts List ■ Parts List Q'TY No. Code No.
DB98_14088A(1)_1 7/10/03 2:13 PM Page 6-1 6. Wiring Diagrams 6-1 Indoor Unit Code No : DB98-12856A This Document can not be used without Samsung's authorization.
DB98_14088A(1)_1 7/10/03 2:13 PM Page 6-2 6-2 Outdoor Unit Code No : DB98-12855A This Document can not be used without Samsung's authorization.
DB98_14088A(1)_1 7/10/03 2:13 PM Page 6-3 7. Schematic Diagrams 7-1 Indoor Unit This Document can not be used without Samsung's authorization.
DB98_14088A(1)_1 7/10/03 2:13 PM Page 6-4 7-2 Outdoor Unit This Document can not be used without Samsung's authorization.
DB98_14088A(1)_1 7/10/03 2:13 PM Page 6-5 MEMO Samsung Electronics 7-3
DB98_14088A(1)_1 7/10/03 2:13 PM Page 6-6 MEMO 7-4 Samsung Electronics
DB98_14088A(1)_1 7/10/03 2:13 PM Page 6-7 MEMO Samsung Electronics 7-5
DB98_14088A(1)_1 7/10/03 2:13 PM Page 6-8 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_14088A(1)_CO 7/10/03 2:14 PM Page 1 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. Jul. 2003. Printed in Korea. Code No.
