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TECHNICAL & SERVICE MANUAL
KS1872 + C1872
FILE NO.
+ CL1872
KS2472 + C2472
+ CL2472 Destination: North America
DC INVERTER SPLIT SYSTEM AIR CONDITIONER
Indoor Model No. Product Code No. Outdoor Model No. Product Code No.
KS1872 1 852 099 83 C1872 1 852 330 36
KS2472 1 852 099 84 C2472 1 852 330 37
CL1872 1 852 330 40
CL2472 1 852 330 41
Indoor Unit Outdoor Unit
KS1872 C1872
KS2472
CL1872
IMPORTANT
These air conditioners employ new
refrigerant R410A.
Pay special attention when
servicing the unit.
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When Transporting Important! Be careful when picking up and moving the indoor and Please Read Before Starting outdoor units. Get a partner to help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin This air conditioning system meets strict safety and operating aluminum fins on the air conditioner can cut your fingers. standards. As the installer or service person, it is an important part of your job to install or service the system so it When Installing o
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Table of Contents Page 1. OPERATING RANGE ................................................................................................................... 5 2. SPECIFICATIONS 2-1. Unit Specifications ............................................................................................................. 6 2-2. Major Component Specifications ....................................................................................... 14 2-3. Other Component Specifications ..................
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Page 10. TROUBLESHOOTING 10-1. Precautions before Performing Inspection or Repair ........................................................... 48 10-2. Method of Self-Diagnostics ................................................................................................. 48 10-3. Checking the Indoor and Outdoor Units .............................................................................. 51 10-4. Trouble Diagnosis of Fan Motor ..........................................................
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1. OPERATING RANGE Models : KS1872 + C1872 KS2472 + C2472 Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp. Maximum 95 °F D.B. / 71 °F W.B. 115 °F D.B. Cooling Minimum 67 °F D.B. / 57 °F W.B. 67 °F D.B. Models : KS1872 + CL1872 KS2472 + CL2472 Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp. Maximum 95 °F D.B. / 71 °F W.B. 115 °F D.B. Cooling Minimum 67 °F D.B. / 57 °F W.B. 0 °F D.B. 5
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2. SPECIFICATIONS 2-1. Unit Specifications Indoor Unit KS1872 Outdoor Unit C1872 < 230V > Voltage Rating 230V Single-Phase 60Hz Performance Cooling Capacity BTU/h 17,600 ( 4,100 to 17,700 ) kW 5.15 ( 1.2 to 5.2 ) 3 3 Air Circulation (High) 524 (890) ft /min (m /h) Moisture Removal (High) Pints/h 4.89 Electrical Rating Cooling Available Voltage Range V 187 to 253 Running Amperes A 7.0 ( 1.2 to 7.0 ) Power Input W 1,500 ( 250 to 1,500 ) Power Factor % 93 SEER BTU/W 16 Compressor Loc
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Indoor Unit KS1872 Outdoor Unit C1872 < 208V > Voltage Rating 208V Single-Phase 60Hz Performance Cooling Capacity BTU/h 17,600 ( 4,100 to 17,700 ) kW 5.15 ( 1.2 to 5.2 ) 3 3 Air Circulation (High) 524 (890) ft /min (m /h) Moisture Removal (High) Pints/h 4.89 Electrical Rating Cooling Available Voltage Range V 187 to 253 Running Amperes A 7.7 ( 1.2 to 7.7 ) Power Input W 1,500 ( 250 to 1,500 ) Power Factor % 94 SEER BTU/W 16 Compressor Locked Rotor Amperes A 17.5 Fuse or Circuit Bre
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Indoor Unit KS2472 Outdoor Unit C2472 < 230V > Voltage Rating 230V Single-Phase 60Hz Performance Cooling Capacity BTU/h 24,200 ( 4,100 to 24,200 ) kW 7.1 ( 1.2 to 7.1 ) 3 3 Air Circulation (High) 600 (1,020) ft /min (m /h) Moisture Removal (High) Pints/h 4.89 Electrical Rating Cooling Available Voltage Range V 187 to 253 Running Amperes A 10.8 ( 1.3 to 10.8 ) Power Input W 2,355 ( 280 to 2,355 ) Power Factor % 95 SEER BTU/W 16 Compressor Locked Rotor Amperes A 17.5 Fuse or Circuit
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Indoor Unit KS2472 Outdoor Unit C2472 < 208V > Voltage Rating 208V Single-Phase 60Hz Performance Cooling Capacity BTU/h 24,200 ( 4,100 to 24,200 ) kW 7.1 ( 1.2 to 7.1 ) 3 3 Air Circulation (High) 600 (1,020) ft /min (m /h) Moisture Removal (High) Pints/h 4.89 Electrical Rating Cooling Available Voltage Range V 187 to 253 Running Amperes A 12.1 ( 1.3 to 12.1 ) Power Input W 2,355 ( 280 to 2,350 ) Power Factor % 94 SEER BTU/W 16 Compressor Locked Rotor Amperes A 17.5 Fuse or Circuit
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Indoor Unit KS1872 Outdoor Unit CL1872 < 230V > Voltage Rating 230V Single-Phase 60Hz Performance Cooling Capacity BTU/h 17,600 ( 4,100 to 17,700 ) kW 5.15 ( 1.2 to 5.2 ) 3 3 Air Circulation (High) 524 (890) ft /min (m /h) Moisture Removal (High) Pints/h 4.89 Electrical Rating Cooling Available Voltage Range V 187 to 253 Running Amperes A 7.0 ( 1.2 to 7.0 ) Power Input W 1,500 ( 250 to 1,500 ) Power Factor % 93 SEER BTU/W 16 Compressor Locked Rotor Amperes A 17.5 Fuse or Circuit Br
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Indoor Unit KS1872 Outdoor Unit CL1872 < 208V > Voltage Rating 208V Single-Phase 60Hz Performance Cooling Capacity BTU/h 17,600 ( 4,100 to 17,700 ) kW 5.15 ( 1.2 to 5.2 ) 3 3 Air Circulation (High) 524 (890) ft /min (m /h) Moisture Removal (High) Pints/h 4.89 Electrical Rating Cooling Available Voltage Range V 187 to 253 Running Amperes A 7.7 ( 1.2 to 7.7 ) Power Input W 1,500 ( 250 to 1,500 ) Power Factor % 94 SEER BTU/W 16 Compressor Locked Rotor Amperes A 17.5 Fuse or Circuit Br
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Indoor Unit KS2472 Outdoor Unit CL2472 < 230V > Voltage Rating 230V Single-Phase 60Hz Performance Cooling Capacity BTU/h 24,200 ( 4,100 to 24,200 ) kW 7.1 ( 1.2 to 7.1 ) 3 3 Air Circulation (High) 600 (1,020) ft /min (m /h) Moisture Removal (High) Pints/h 4.89 Electrical Rating Cooling Available Voltage Range V 187 to 253 Running Amperes A 10.8 ( 1.3 to 10.8 ) Power Input W 2,355 ( 280 to 2,355 ) Power Factor % 95 SEER BTU/W 16 Compressor Locked Rotor Amperes A 17.5 Fuse or Circuit
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Indoor Unit KS2472 Outdoor Unit CL2472 < 208V > Voltage Rating 208V Single-Phase 60Hz Performance Cooling Capacity BTU/h 24,200 ( 4,100 to 24,200 ) kW 7.1 ( 1.2 to 7.1 ) 3 3 Air Circulation (High) 600 (1,020) ft /min (m /h) Moisture Removal (High) Pints/h 4.89 Electrical Rating Cooling Available Voltage Range V 187 to 253 Running Amperes A 12.1 ( 1.3 to 12.1 ) Power Input W 2,355 ( 280 to 2,355 ) Power Factor % 94 SEER BTU/W 16 Compressor Locked Rotor Amperes A 17.5 Fuse or Circuit
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2-2. Major Component Specifications 2-2-1. Indoor Unit Indoor Unit KS1872 Control PCB Part No. CB-KS1872 Controls Microprocessor Control Circuit Fuse 250V 3A Remote Control Unit RCS-4VPIS4U Fan Type Cross-Flow Q'ty ... Dia. and Length inch (mm) 1 ... D3-11/16 / L33-9/32 (D94/L845) Fan Motor Type DC Motor Model ... Q'ty SIC-39CVL-D847-2-A ... 1 No. of Poles 8 Rough Measure RPM (Cool) 1,250 Nominal Output W 30 Coil Resistance Ohm - o o (Ambient Temp. 68 F (20 C)) Safety Device T
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Indoor Unit KS2472 Control PCB Part No. CB-KS2472 Controls Microprocessor Control Circuit Fuse 250V 3A Remote Control Unit RCS-4VPIS4U Fan Type Cross-Flow Q'ty ... Dia. and Length inch (mm) 1 ... D3-11/16 / L33-9/32 (D94/L845) Fan Motor Type DC Motor Model ... Q'ty SIC-39CVL-D847-2-A ... 1 No. of Poles 8 Rough Measure RPM (Cool) 1,500 Nominal Output W 30 Coil Resistance Ohm - o o (Ambient Temp. 68 F (20 C)) Safety Device Type Internal Controller Over-Current Protection Yes Over-
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2-2-2. Outdoor Unit Outdoor Unit C1872 Control PCB Part No. CB-C1872 Controls Microprocessor Control Circuit Fuse 250V 25A Compressor Type DC Twin Rotary (Hermetic) Compressor Model / Nominal Output C-6RVN93H0M / 1,050W Compressor Oil ... Amount Pints (cc) FV50S ... 0.74 (350) o o Ohm R - S : 0.482 Coil Resistance (Ambient Temp. 68 F (20 C)) S - T : 0.482 T - R : 0.482 Safety Device CT (Peak current cut-off control) Yes Compressor Discharge Temp. Control Yes Operation cut-off control
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Outdoor Unit C2472 Control PCB Part No. CB-C2472 Controls Microprocessor Control Circuit Fuse 250V 25A Compressor Type DC Twin Rotary (Hermetic) Compressor Model / Nominal Output G8T265FU1JW / 2,410W Compressor Oil ... Amount Pints (cc) FV50S ... 1.49 (700) o o Ohm U - V : 0.36 Coil Resistance (Ambient Temp. 77 F (25 C)) V - W : 0.36 W - U : 0.36 Safety Device CT (Peak current cut-off control) Yes Compressor Discharge Temp. Control Yes Operation cut-off control in abnormal ambient Tem
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Outdoor Unit CL1872 Control PCB Part No. CB-CL1842 Controls Microprocessor Control Circuit Fuse 250V 25A Compressor Type DC Twin Rotary (Hermetic) Compressor Model / Nominal Output C-6RVN93H0M / 1,050W Compressor Oil ... Amount Pints (cc) FV50S ... 0.74 (350) o o Ohm R - S : 0.482 Coil Resistance (Ambient Temp. 68 F (20 C)) S - T : 0.482 T - R : 0.482 Safety Device CT (Peak current cut-off control) Yes Compressor Discharge Temp. Control Yes Operation cut-off control in abnormal ambien
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Outdoor Unit CL2472 Control PCB Part No. CB-CL2472 Controls Microprocessor Control Circuit Fuse 250V 25A Compressor Type DC Twin Rotary (Hermetic) Compressor Model / Nominal Output G8T265FU1JW / 2,410W Compressor Oil ... Amount Pints (cc) FV50S ... 1.49 (700) o o Ohm U - V : 0.36 Coil Resistance (Ambient Temp. 77 F (25 C)) V - W : 0.36 W - U : 0.36 Safety Device CT (Peak current cut-off control) Yes Compressor Discharge Temp. Control Yes Operation cut-off control in abnormal ambient T
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2-3. Other Component Specifications Indoor Unit KS1872 KS2472 Outdoor Unit C1872 C2472 CL1872 CL2472 Indoor heat exchanger sensor (Model:PTM-D51H-S3 TH1) Indoor air temp sensor Compressor temp sensor (Model:PTM-D51H-S3 TH2) (Model:TKS 293B) 10 200 9 180 8 160 7 140 6 120 5 100 4 80 3 60 2 40 1 20 0 0 50 59 68 77 86 95 104 32 50 68 86 104 122 140 158 176 194 (10) (15) (20) (25) (30) (35) (40) (0) (10) (20) (30) (40) (50) (60) (70) (80) (90) Temperature °F (°C) Temperature °F (°C) O
