TECHNICAL DATA & SERVICE MANUAL ASR ASR ASR ASR ASR ASR ASR ASR 425 425 436 448 425 425 436 448 H H H H H H H H / / / / / / / / AER AER AER AER AER AER AER AER 425 425 436 448 425 425 436 448 SCLE SCL3E SCL3E SCL3E SHLE SHL3E SHL3E SHL3E ADR ADR ADR ADR ADR ADR ADR ADR 425 425 436 448 425 425 436 448 H H H H H H H H / / / / / / / / AER AER AER AER AER AER AER AER 425 425 436 448 425 425 436 448 SCLE SCL3E SCL3E SCL3E SHLE SHL3E SHL3E SHL3E FILE NO.
Important Please Read Before Starting When Installing …………………………………………………………………… This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an important part of your job to install or service the system so it operates safely and efficiently. …In a Room Properly insulate any tubing run inside a room to prevent “sweating” that can cause dripping and water damage to walls and floors.
WHO SHOULD USE THIS MANUAL This service manual is made to assist the service technician apply his knowledge and training to this model air conditioner. This manual is written both for experienced service persons and those who are new to air conditioning service. To help those with less experience or who are new to this kind of unit we have included more explanations of basic procedures in simple language than is usual in some service manuals.
2-7 2-8 2-9 2-10 2-11 2-12 2-13 2-14 2-15 2-16 2-17 2-18 2-19 Overload Protection (Heating) ..................................................................II - 9 Discharge Temperature Control (Cooling and Heating) ........................... II - 10 Auto. Mode for Automatic Heating/Cooling Switching ..............................II - 11 Defrosting Control, Outdoor Heat Exchanger Coil (Heating) ....................II - 12 4-Way Valve, Solenoid Control ...................................................
Introduction: Read Me First! WHAT IS IN THIS MANUAL This manual will help you understand and service the air conditioner. To help you find the information you need, we have divided it into 5 main sections. Each section is divided into chapters with charts, tables and explanations to help you find and repair problems. ❑ Section 1: Specifications, tells you about the physical and electrical make up of the unit, as well as its heating and cooling capacities.
1. Specifications 1. SPECIFICATIONS 1-1 Unit Specifications ................................................................................. I - 2 4-Way Air Discharge Semi-concealed Type ........................................... I - 2 Ceiling Mounted Type .............................................................................. I - 10 Concealed Duct Type .............................................................................. I - 18 Concealed Duct High Static Pressure Type ..................
1. Specifications 1-1 Unit Specifications 4-Way Air Discharge Semi-concealed Type MODEL No. Indoor Unit Outdoor Unit POWER SOURCE PERFORMANCE Capacity 1 2 1 3 4 5 Air circulation (Hi / Me / Lo) Moisture removal (High) ELECTRICAL RATINGS Voltage rating Available voltage range Running amperes* Max. running amperes** Power input C.O.P Max.
1. Specifications 1-1 Unit Specifications 4-Way Air Discharge Semi-concealed Type MODEL No. Indoor Unit Outdoor Unit POWER SOURCE PERFORMANCE Capacity Air circulation (Hi / Me / Lo) Moisture removal (High) ELECTRICAL RATINGS Voltage rating Available voltage range Running amperes* Max. running amperes** Power input C.O.P Max.
1. Specifications 1-1 Unit Specifications 4-Way Air Discharge Semi-concealed Type MODEL No. Indoor Unit Outdoor Unit POWER SOURCE PERFORMANCE Capacity 1 2 1 3 4 5 Air circulation (Hi / Me / Lo) Moisture removal (High) ELECTRICAL RATINGS Voltage rating Available voltage range Running amperes* Max. running amperes** Power input C.O.P Max.
1. Specifications 1-1 Unit Specifications 4-Way Air Discharge Semi-concealed Type MODEL No. Indoor Unit Outdoor Unit POWER SOURCE PERFORMANCE Capacity Air circulation (Hi / Me / Lo) Moisture removal (High) ELECTRICAL RATINGS Voltage rating Available voltage range Running amperes* Max. running amperes** Power input C.O.P Max.
1. Specifications 1-1 Unit Specifications 4-Way Air Discharge Semi-concealed Type MODEL No. Indoor Unit Outdoor Unit POWER SOURCE PERFORMANCE Capacity 1 2 1 3 4 Air circulation (Hi / Me / Lo) Moisture removal (High) ELECTRICAL RATINGS Voltage rating Available voltage range Running amperes* Max. running amperes** Power input C.O.P Max.
1. Specifications 1-1 Unit Specifications 4-Way Air Discharge Semi-concealed Type MODEL No. Indoor Unit Outdoor Unit POWER SOURCE PERFORMANCE Capacity Air circulation (Hi / Me / Lo) Moisture removal (High) ELECTRICAL RATINGS Voltage rating Available voltage range Running amperes* Max. running amperes** Power input C.O.P Max.
1. Specifications 1-1 Unit Specifications 4-Way Air Discharge Semi-concealed Type MODEL No. Indoor Unit Outdoor Unit POWER SOURCE PERFORMANCE Capacity 1 2 1 3 4 Air circulation (Hi / Me / Lo) Moisture removal (High) ELECTRICAL RATINGS Voltage rating Available voltage range Running amperes* Max. running amperes** Power input C.O.P Max.
1. Specifications 1-1 Unit Specifications 4-Way Air Discharge Semi-concealed Type MODEL No. Indoor Unit Outdoor Unit POWER SOURCE PERFORMANCE Capacity Air circulation (Hi / Me / Lo) Moisture removal (High) ELECTRICAL RATINGS Voltage rating Available voltage range Running amperes* Max. running amperes** Power input C.O.P Max.
1. Specifications 1-1 Unit Specifications Ceiling Mounted Type MODEL No. Indoor Unit Outdoor Unit POWER SOURCE PERFORMANCE Capacity 1 2 1 3 4 Air circulation (Hi / Me / Lo) Moisture removal (High) ELECTRICAL RATINGS Voltage rating Available voltage range Running amperes* Max. running amperes** Power input Power factor C.O.P Max.
1. Specifications 1-1 Unit Specifications Ceiling Mounted Type MODEL No. Indoor Unit Outdoor Unit POWER SOURCE PERFORMANCE Capacity Air circulation (Hi / Me / Lo) Moisture removal (High) ELECTRICAL RATINGS Voltage rating Available voltage range Running amperes* Max. running amperes** Power input Power factor C.O.P Max.
1. Specifications 1-1 Unit Specifications Ceiling Mounted Type MODEL No. Indoor Unit Outdoor Unit POWER SOURCE PERFORMANCE Capacity 1 2 1 3 4 Air circulation (Hi / Me / Lo) Moisture removal (High) ELECTRICAL RATINGS Voltage rating Available voltage range Running amperes* Max. running amperes** Power input Power factor C.O.P Max.
1. Specifications 1-1 Unit Specifications Ceiling Mounted Type MODEL No. Indoor Unit Outdoor Unit POWER SOURCE PERFORMANCE Capacity Air circulation (Hi / Me / Lo) Moisture removal (High) ELECTRICAL RATINGS Voltage rating Available voltage range Running amperes* Max. running amperes** Power input Power factor C.O.P Max.
1. Specifications 1-1 Unit Specifications Ceiling Mounted Type MODEL No. Indoor Unit Outdoor Unit POWER SOURCE PERFORMANCE Capacity 1 2 1 3 4 Air circulation (Hi / Me / Lo) Moisture removal (High) ELECTRICAL RATINGS Voltage rating Available voltage range Running amperes* Max. running amperes** Power input Power factor C.O.P Max.
1. Specifications 1-1 Unit Specifications Ceiling Mounted Type MODEL No. Indoor Unit Outdoor Unit POWER SOURCE PERFORMANCE Capacity Air circulation (Hi / Me / Lo) Moisture removal (High) ELECTRICAL RATINGS Voltage rating Available voltage range Running amperes* Max. running amperes** Power input Power factor C.O.P Max.
1. Specifications 1-1 Unit Specifications Ceiling Mounted Type MODEL No. Indoor Unit Outdoor Unit POWER SOURCE PERFORMANCE Capacity 1 2 1 3 4 Air circulation (Hi / Me / Lo) Moisture removal (High) ELECTRICAL RATINGS Voltage rating Available voltage range Running amperes* Max. running amperes** Power input Power factor C.O.P Max.
1. Specifications 1-1 Unit Specifications Ceiling Mounted Type MODEL No. Indoor Unit Outdoor Unit POWER SOURCE PERFORMANCE Capacity Air circulation (Hi / Me / Lo) Moisture removal (High) ELECTRICAL RATINGS Voltage rating Available voltage range Running amperes* Max. running amperes** Power input Power factor C.O.P Max.
1. Specifications 1-1 Unit Specifications Concealed Duct Type MODEL No. Indoor Unit Outdoor Unit POWER SOURCE PERFORMANCE Capacity 1 2 1 3 4 5 Air circulation (Hi / Me / Lo) Moisture removal (High) External static pressure (High) ELECTRICAL RATINGS Voltage rating Available voltage range Running amperes* Max. running amperes** Power input Power factor C.O.P Max.
1. Specifications 1-1 Unit Specifications Concealed Duct Type MODEL No. Indoor Unit Outdoor Unit POWER SOURCE PERFORMANCE Capacity Air circulation (Hi / Me / Lo) Moisture removal (High) External static pressure (High) ELECTRICAL RATINGS Voltage rating Available voltage range Running amperes* Max. running amperes** Power input Power factor C.O.P Max.
1. Specifications 1-1 Unit Specifications Concealed Duct Type MODEL No. Indoor Unit Outdoor Unit POWER SOURCE PERFORMANCE Capacity 1 2 1 3 4 5 Air circulation (Hi / Me / Lo) Moisture removal (High) External static pressure (High) ELECTRICAL RATINGS Voltage rating Available voltage range Running amperes* Max. running amperes** Power input Power factor C.O.P Max.
1. Specifications 1-1 Unit Specifications Concealed Duct Type MODEL No. Indoor Unit Outdoor Unit POWER SOURCE PERFORMANCE Capacity Air circulation (Hi / Me / Lo) Moisture removal (High) External static pressure (High) ELECTRICAL RATINGS Voltage rating Available voltage range Running amperes* Max. running amperes** Power input Power factor C.O.P Max.
1. Specifications 1-1 Unit Specifications Concealed Duct Type MODEL No. Indoor Unit Outdoor Unit POWER SOURCE PERFORMANCE Capacity 1 2 1 3 4 Air circulation (Hi / Me / Lo) Moisture removal (High) External static pressure (High) ELECTRICAL RATINGS Voltage rating Available voltage range Running amperes* Max. running amperes** Power input Power factor C.O.P Max.
1. Specifications 1-1 Unit Specifications Concealed Duct Type MODEL No. Indoor Unit Outdoor Unit POWER SOURCE PERFORMANCE Capacity Air circulation (Hi / Me / Lo) Moisture removal (High) External static pressure (High) ELECTRICAL RATINGS Voltage rating Available voltage range Running amperes* Max. running amperes** Power input Power factor C.O.P Max.
1. Specifications 1-1 Unit Specifications Concealed Duct Type MODEL No. Indoor Unit Outdoor Unit POWER SOURCE PERFORMANCE Capacity 1 2 1 3 4 Air circulation (Hi / Me / Lo) Moisture removal (High) External static pressure (High) ELECTRICAL RATINGS Voltage rating Available voltage range Running amperes* Max. running amperes** Power input Power factor C.O.P Max.
1. Specifications Unit Specifications 1-1 Concealed Duct Type MODEL No. Indoor Unit Outdoor Unit POWER SOURCE PERFORMANCE Capacity Air circulation (Hi / Me / Lo) Moisture removal (High) External static pressure (High) ELECTRICAL RATINGS Voltage rating Available voltage range Running amperes* Max. running amperes** Power input Power factor C.O.P Max.
1. Specifications 1-2 Major Component Specifications (A) Indoor Units : 4-Way Air Discharge Semi-concealed Type MODEL No. ASR 425 H Source 220 - 230 - 240 V / 1 phase / 50Hz Controller P.C.B. Ass’y Fan (Number…diameter) CR-X253GH (Microprocessor) mm Turbo (1 … ø 490) Fan motor Model…Nominal output W Source No. of pole…r.p.m. (230 V, High) Coil resistance (Ambient temperature 20°C) SFG6X-41A5P … 40 W 220 - 230 - 240 V / 1 phase / 50 Hz rpm. Ω 6 … 470 BRN – WHT : 114.0 WHT – VLT : 23.
1. Specifications 1-2 Major Component Specifications (A) Indoor Units : 4-Way Air Discharge Semi-concealed Type MODEL No. ASR 436 H Source 220 - 230 - 240 V / 1 phase / 50Hz Controller P.C.B. Ass’y Fan (Number…diameter) CR-X253GH (Microprocessor) mm Turbo (1 … ø 490) Fan motor Model…Nominal output W Source No. of pole…r.p.m. (230 V, High) Coil resistance (Ambient temperature 20°C) SFG6X-61A3P…60 W 220 - 230 - 240 V / 1 phase / 50 Hz rpm. Ω 6 … 530 BRN – WHT : WHT – VLT : VLT – ORG : 71.1 8.
1. Specifications 1-2 Major Component Specifications (A) Indoor Units : 4-Way Air Discharge Semi-concealed Type MODEL No. ASR 448 H Source 220 - 230 - 240 V / 1 phase / 50Hz Controller P.C.B. Ass’y Fan (Number…diameter) CR-X253GH (Microprocessor) mm Turbo (1 … ø 490) Fan motor Model…Nominal output W Source No. of pole…r.p.m. (230 V, High) Coil resistance (Ambient temperature 20°C) SFG6X-61A3P…60 W 220 - 230 - 240 V / 1 phase / 50 Hz rpm. Ω 6 … 530 BRN – WHT : WHT – VLT : VLT – ORG : 71.1 8.
1. Specifications 1-2 Major Component Specifications (A) Indoor Units : Ceiling Mounted Type MODEL No. ACR 425 H Source 220 - 230 - 240 V / 1 phase / 50 Hz Controller P.C.B. Ass’y CR-X253GH (Microprocessor) Fan (Number…diameter) mm Centrifugal (4 … ø 130) Fan motor Model…Nominal output W Source SR4X-51A6P … 50 W 220 - 230 - 240 V / 1 phase / 50 Hz No. of pole…r.p.m. (230 V, High) rpm. Ω Coil resistance (Ambient temperature 20 °C) 4 … 1,172 BRN – WHT : 111.0 WHT – VLT : 35.4 VLT – ORG : 13.
1. Specifications 1-2 Major Component Specifications (A) Indoor Units : Ceiling Mounted Type MODEL No. ACR 436 H Source 220 - 230 - 240 V / 1 phase / 50 Hz Controller P.C.B. Ass’y CR-X253GH (Microprocessor) Fan (Number…diameter) mm Centrifugal (4 … ø 150) Fan motor Model…Nominal output W Source KFG4X-101C6P…100 W 220 - 230 - 240 V / 1 phase / 50 Hz No. of pole…r.p.m. (230 V, High) rpm. Ω Coil resistance (Ambient temperature 20 °C) 4…1,015 BRN – WHT : 61.05 WHT – VLT : 9.955 VLT – ORG : 9.
1. Specifications 1-2 Major Component Specifications (A) Indoor Units : Ceiling Mounted Type MODEL No. ACR 448 H Source 220 - 230 - 240 V / 1 phase / 50Hz Controller P.C.B. Ass’y CR-X253GH (Microprocessor) Fan (Number…diameter) mm Centrifugal (4…ø150) Fan motor Model…Nominal output W Source KFG4X-101C6P…100 W 220 - 230 - 240 V / 1 phase / 50 Hz No. of pole…r.p.m. (230 V, High) rpm. Ω Coil resistance (Ambient temperature 20°C) 4…1,070 BRN – WHT : 61.05 WHT – VLT : 9.955 VLT – ORG : 9.
1. Specifications 1-2 Major Component Specifications (A) Indoor Units : Concealed Duct Type MODEL No. ADR 425 H Source 220 - 230 - 240 V / 1 phase / 50Hz Controller P.C.B. Ass’y CR-X253GH (Microprocessor) Fan (Number…diameter) mm Centrifugal (2 … ø 190) W KFC4X-71B5P … 70 W Fan motor Model…Nominal output Source 220 - 230 - 240 V / 1 phase / 50 Hz No. of pole…r.p.m. (230 V, High) rpm. Ω Coil resistance (Ambient temperature 20°C) 4 … 1,063 BRN – WHT : 74.72 WHT – VLT : 19.14 VLT – ORG : 10.
1. Specifications 1-2 Major Component Specifications (A) Indoor Units : Concealed Duct Type MODEL No. ADR 436 H Source 220 - 230 - 240 V / 1 phase / 50Hz Controller P.C.B. Ass’y CR-X253GH (Microprocessor) Fan (Number…diameter) mm Centrifugal (3 … ø 190) W KFC4X-141A5P…160 W Fan motor Model…Nominal output Source 220 - 230 - 240 V / 1 phase / 50 Hz No. of pole…r.p.m. (230 V, High) rpm.
1. Specifications 1-2 Major Component Specifications (A) Indoor Units : Concealed Duct Type MODEL No. ADR 448 H Source 220 - 230 - 240 V / 1 phase / 50Hz Controller P.C.B. Ass’y CR-X253GH (Microprocessor) Fan (Number…diameter) mm Centrifugal (3 … ø 190) W KFC4X-141A5P…160 W Fan motor Model…Nominal output Source 220 - 230 - 240 V / 1 phase / 50 Hz No. of pole…r.p.m. (230 V, High) rpm.
1. Specifications 1-2 Major Component Specifications (B) Outdoor Unit MODEL No. AER 425 SCLE Source 220 - 230 - 240 V / 1 phase / 50 Hz Controller P.C.B. Ass'y CR - CR253GHL5 (Microprocessor) Control circuit fuse 250 V, 3.15 A Compressor Rotary (Hermetic) Model ..... number C - RN220H5B Source 220 - 240 V / 1 phase / 50 Hz Nominal output W 2200 Compressor oil cc 1500 Coil resistance (Ambient temperature 25 °C) Ω C – R : 0.76 C – S : 2.76 , R – S : 3.
1. Specifications 1-2 Major Component Specifications (B) Outdoor Unit MODEL No. AER 425 SHLE Source 220 - 230 - 240 V / 1 phase / 50 Hz Controller P.C.B. Ass'y CR - CR253GHL5 (Microprocessor) Control circuit fuse 250 V, 3.15 A Compressor Rotary (Hermetic) Model ..... number C - RN220H5B Source 220 - 240 V / 1 phase / 50 Hz Nominal output W 2200 Compressor oil cc 1500 Coil resistance (Ambient temperature 25 °C) Ω C – R : 0.76 C – S : 2.76 , R – S : 3.
1. Specifications 1-2 Major Component Specifications (B) Outdoor Unit MODEL No. AER 425 SCL3E Source 380 - 400 - 415 V / 3 phase / 50 Hz Controller P.C.B. Ass'y CR - CR483GHL8 (Microprocessor) Control circuit fuse 250 V, 3.15 A Compressor Rotary (Hermetic) Model ..... number C - RN223H8D Source 380 - 400 - 415 V / 3 phase / 50 Hz Nominal output W 2400 Compressor oil cc 1350 Coil resistance (Ambient temperature 25 °C) Ω T – R : 5.77 S – T : 5.38 , R – S : 5.
1. Specifications 1-2 Major Component Specifications (B) Outdoor Unit MODEL No. AER 425 SHL3E Source 380 - 400 - 415 V / 3 phase / 50 Hz Controller P.C.B. Ass'y CR - CR483GHL8 (Microprocessor) Control circuit fuse 250 V, 3.15 A Compressor Rotary (Hermetic) Model ..... number C - RN223H8D Source 380 - 400 - 415 V / 3 phase / 50 Hz Nominal output W 2400 Compressor oil cc 1350 Coil resistance (Ambient temperature 25 °C) Ω T – R : 5.77 S – T : 5.38 , R – S : 5.
1. Specifications 1-2 Major Component Specifications (B) Outdoor Unit MODEL No. AER 436 SCL3E AER 448 SCL3E Source 380 - 400 - 415 V / 3 phase / 50 Hz Controller P.C.B. Ass'y CR - CR483GHL8 (Microprocessor) Control circuit fuse 250 V, 3.15 A Compressor Scroll (Hermetic) Model ..... number C - SBN303H8A Source C - SBN373H8A 380 - 400 - 415 V / 3 phase / 50 Hz Nominal output W Compressor oil cc Coil resistance (Ambient temperature 25 °C) Ω 2,400 3,700 1,700 1,700 T – R : 3.
1. Specifications 1-2 Major Component Specifications (B) Outdoor Unit MODEL No. AER 436 SHL3E AER 448 SHL3E Source 380 - 400 - 415 V / 3 phase / 50 Hz Controller P.C.B. Ass'y CR - CR483GHL8 (Microprocessor) Control circuit fuse 250 V, 3.15 A Compressor Scroll (Hermetic) Model ..... number C - SBN303H8A Source C - SBN373H8A 380 - 400 - 415 V / 3 phase / 50 Hz Nominal output W Compressor oil cc Coil resistance (Ambient temperature 25 °C) Ω 2,400 3,700 1,700 1,700 T – R : 3.
1. Specifications 1-3 Other Component Specifications 4-Way Air Discharge Semi-concealed Type MODEL NO. Indoor Unit ASR 425 ~ 448H Power Transformer ATR-II215TA Rated Primary VAC, Hz 230 V, 50 Hz Secondary 10.2 V 1.4 A 14 V 0.5 A Coil resistance Ω WHT – WHT : 84 , BRN – BRN : 0.7 RED – RED : 2.7 Thermal cut off temperature ˚C Thermistor (Coil sensor) : TH2, 3, 4 Resistance 145 PB3M-41E-S4 , PBC-41E-S25 , PBC-41E-S26 , PBC-41E-S36 KΩ -10 -5 0 5 10 ˚C ˚C ˚C ˚C ˚C : : : : : 23.7 ± 18.
1. Specifications 1-3 Other Component Specifications Ceiling Mounted Type MODEL NO. Indoor Unit ACR 425 ~ 448H Power Transformer ATR-II215TB Rated Primary VAC, Hz 230 V, 50 Hz Secondary 10.2 V 1.4 A 14 V 0.5 A Coil resistance Ω WHT –WHT : 110 , BRN – BRN : 0.5 RED – RED : 2.3 Thermal cut off temperature ˚C 145 Thermistor (Coil sensor) : TH2, 3, 4 Resistance PB3M-41E-S6 , PBC-41E-S14 , PBC-41E-S25 KΩ -10 -5 0 5 10 ˚C ˚C ˚C ˚C ˚C : : : : : 23.7 ± 18.8 ± 15.0 ± 12.1 ± 9.
1. Specifications 1-3 Other Component Specifications Concealed Duct Type MODEL NO. Indoor Unit ADR 425 ~ 448 H Power Transformer ATR-II215TB Rated Primary VAC, Hz 230 V, 50 Hz Secondary 10.2 V 1.4 A 14 V 0.5 A Coil resistance Ω WHT –WHT : 110 , BRN – BRN : 0.5 RED – RED : 2.3 Thermal cut off temperature ˚C 145 Thermistor (Coil sensor) : TH2, 3, 4 Resistance PBC-41E-S36 , PBC-41E-S25 KΩ -10 -5 0 5 10 ˚C ˚C ˚C ˚C ˚C : : : : : Thermistor (Room sensor) : TH1, 5 Resistance 23.7 ± 18.
1. Specifications 1-3 Other Component Specifications Outdoor Unit MODEL NO. Outdoor Unit AER 425 SCLE - AER 425 SCL3E Power Transformer ATR - I65B Rated Primary VAC, Hz 230 V, 50 Hz Secondary 14 V, 0.4 A Ω Coil resistance WHT – WHT : 300 °C Thermal cut off temperature Thermistor (Coil sensor) : TH7 kΩ –10 °C – 5 °C 0 °C 5 °C : : : : 23.7 18.8 15.0 12.
1. Specifications 1-3 Other Component Specifications Outdoor Unit MODEL NO. Outdoor Unit AER 425 SHLE - AER 425 SHL3E Power Transformer ATR - I65B Rated Primary VAC, Hz 230 V, 50 Hz Secondary 14 V, 0.4 A Ω Coil resistance WHT – WHT : 300 °C Thermal cut off temperature Thermistor (Coil sensor) : TH6, 7 Coil resistance kΩ PBC - 41E - S26 , –10 °C – 5 °C 0 °C 5 °C , , , , : : : : 23.7 18.8 15.0 12.
1. Specifications 1-3 Other Component Specifications Outdoor Unit MODEL NO. Outdoor Unit AER 436 SCL3E - AER 448 SCL3E Power Transformer ATR - I65B Rated Primary VAC, Hz 230 V, 50 Hz Secondary 14 V, 0.4 A Ω Coil resistance WHT – WHT : 300 °C Thermal cut off temperature Thermistor (Coil sensor) : TH7 kΩ –10 °C – 5 °C 0 °C 5 °C : : : : 23.7 18.8 15.0 12.
1. Specifications 1-3 Other Component Specifications Outdoor Unit MODEL NO. Outdoor Unit AER 436 SHL3E Power Transformer AER 448 SHL3E ATR - I65B Rated Primary VAC, Hz 230 V, 50 Hz Secondary 14 V, 0.4 A Ω Coil resistance WHT – WHT : 300 °C Thermal cut off temperature Thermistor (Coil sensor) : TH6, 7 Coil resistance kΩ PBC - 41E - S36 , –10 °C – 5 °C 0 °C 5 °C , , , , : : : : 23.7 18.8 15.0 12.
1. Specifications 1-4 Dimensional Data (A) Indoor Units : 4-Way Air Discharge Semi-concealed Type 25 Type 207 205 X-view 760 100 61 61 50 298 205 165 820 (Ceiling opening) 590 (Suspention bolt pitch) 30 860 500 15 12 35 342 150 255 9 12 860 500 760 100 345 730 (Suspention bolt pitch) 820 (Ceiling opening) 2 1 Panel center 1 48 125 3 207 Air intake grille Air outlet Refrigerant liquid line [ø 9.52 (In case of 25 type, use the tube connector.)] Refrigerant gas line ø 12.
1. Specifications 1-4 Dimensional Data (A) Indoor Units : 4-Way Air Discharge Semi-concealed Type 36, 48 Type 218 210 35 760 145 X-view 60 61 70 165 285 820 (Ceiling opening) 328 218 125 590 (Suspention bolt pitch) 15 40 342 860 500 30 1150 790 2 1050 3 12 Panel center 1020 (Suspention bolt pitch) 1110 (Ceiling opening) 490 12 1 9 48 210 4 100 100 Air intake grille Air outlet Refrigerant liquid line (ø9.52) Refrigerant gas line (ø19.
1.
1. Specifications 1-4 Dimensional Data (A) Indoor Units : Concealed Duct Type 25 Type 10 130 25 70 210 310 285 25 175 35 190 30 10 25 70 630 75 65 (150) 115 40 16-ø3.3 (Hole) Inspection access (450 × 450) (Field supply) 85 31 24 272 1 290 1080 (Suspension bolt pitch) 2 290 900 1000 180 19 3 31 580 (Suspension bolt pitch) 90 260 (Air outlet duct flange) 962 (Air outlet duct flange) 11 25 160 25 185 9 10 11 Refrigerant liquid line ø9.
1. Specifications 1-4 Dimensional Data (A) Indoor Units : Concealed Duct Type 36, 48 Type 10 25 285 70 210 310 130 25 175 35 190 30 630 (150) 1560 (Suspension bolt pitch) 75 65 40 115 1480 18-ø3.3 (Hole) Inspection access (450 × 450) (Field supply) 85 310 335 335 335 230 P × 6 = 1380 2 1 1442 (Air outlet duct flange) 230 1 70 31 24 19 11 260 (Air outlet duct flange) 25 160 10 25 31 3 580 (Suspension bolt pitch) 25 90 4 185 9 10 5 11 Refrigerant liquid line ø9.
1. Specifications 1-4 Dimensional Data 7 Flange for the air intake duct (Field supply) 10 25 2-ø3.3 (Hole) : For Concealed Duct Type 25 210 305 25 260 (O.D.) 23 G C-ø3.3 (Hole) D F 31 18 I-ø6 (Hole) 10 A 2 G E H B (O.D.
1. Specifications 1-4 Dimensional Data (B) Outdoor Units : AER 425 SCLE - AER 425 SCL3E AER 425 SHLE - AER 425 SHL3E 110 400 380 340 50 10 660 50 30 170 735 940 307 280 1 Dimension : mm Hole for anchor bolt (4-ø13) Refrigerant tube joint (narrow tube) Flare connection 1/4 in (6.35 mm) Refrigerant tube joint (wide tube) Flare connection 5/8 in (15.
1. Specifications 1-4 Dimensional Data (B) Outdoor Units : AER 436 SCL3E - AER 436 SHL3E AER 448 SCL3E - AER 448 SHL3E 110 400 380 340 50 10 660 50 30 170 607 580 1 1235 940 2 1 Dimension : mm Hole for anchor bolt (4-ø13) Refrigerant tube joint (narrow tube) Flare connection 3/8 in (9.52 mm) Refrigerant tube joint (wide tube) Flare connection 3/4 in (19.
1. Specifications 1-5 Refrigerant Flow Diagram Indoor Unit : 25 Type Outdoor Units : AER 425 SCLE AER 425 SCL3E Compressor Accumulator Accumulator High pressure switch Gas line service valve HP O.D. ø15.88mm (5/8") Gas line nipple EC Heat exchanger EC P Heat exchanger Distributor P Strainer Electronic ref.control valve Distributor Liquid line service valve M O.D. ø6.
1. Specifications 1-5 Refrigerant Flow Diagram Indoor Units : 36, 48 Type Outdoor Units : AER 436 SCL3E AER 448 SCL3E Low pressure switch Compressor Accumulator LP Gas line service valve High pressure switch O.D. ø19.05mm (3/4") Gas line nipple HP EC Heat exchanger EC P Heat exchanger Distributor P Strainer Electronic ref.control valve Distributor Liquid line service valve M O.D. ø9.
1. Specifications 1-5 Refrigerant Flow Diagram Indoor Unit : 25 Type Outdoor Units : AER 425 SHLE AER 425 SHL3E Compressor Accumulator Accumulator Gas line service valve O.D. ø15.88mm (5/8") Gas line nipple HP High pressure switch Muffler 4-way valve EC Heat exchanger EC P Heat exchanger Distributor P Strainer Electronic ref.control valve Distributor Liquid line service valve M O.D. ø6.
1. Specifications 1-5 Refrigerant Flow Diagram Indoor Units : 36, 48 Type Outdoor Units : AER 436 SHL3E AER 448 SHL3E Compressor Low pressure switch Accumulator LP Gas line service valve High pressure switch HP Gas line nipple O.D. ø19.05mm (3/4") Muffler 4-way valve EC Heat exchanger EC P Heat exchanger Distributor P Strainer Electronic ref.control valve Distributor Liquid line service valve M O.D. ø9.
1. Specifications 1-7 Cooling Capacity Indoor Unit : ASR 425 H RATING CAPACITY : EVAPORATOR ENT. TEMP. °C WB DB 15 17 19 21 23 25 21 23 25 27 29 31 21 23 25 27 29 31 21 23 25 27 29 31 23 25 27 29 31 25 27 29 31 27 29 31 Outdoor Unit : 7.3 kW TC CI SHC SHC SHC SHC SHC SHC TC CI SHC SHC SHC SHC SHC SHC TC CI SHC SHC SHC SHC SHC SHC TC CI SHC SHC SHC SHC SHC TC CI SHC SHC SHC SHC TC CI SHC SHC SHC TC : Total Cooling Capacity SHC : Sensible Heat Capacity CI : Compressor Input 25 7.37 2.22 4.
1. Specifications 1-7 Cooling Capacity Indoor Unit : ASR 425 H RATING CAPACITY : EVAPORATOR ENT. TEMP. °C WB DB 15 17 1 2 1 19 21 5 21 23 25 27 29 31 21 23 25 27 29 31 23 25 27 29 31 23 25 27 29 31 25 27 29 31 3 4 21 23 25 27 29 31 Outdoor Unit : 7.
1. Specifications 1-7 Cooling Capacity Indoor Unit : ASR 436 H RATING CAPACITY : EVAPORATOR ENT. TEMP. °C WB DB 15 17 19 21 23 25 21 23 25 27 29 31 21 23 25 27 29 31 21 23 25 27 29 31 23 25 27 29 31 25 27 29 31 27 29 31 Outdoor Unit : AER 436 SCL3E AER 436 SHL3E 10.
1. Specifications 1-7 Cooling Capacity Indoor Unit : ASR 448 H RATING CAPACITY : EVAPORATOR ENT. TEMP. °C WB DB 15 17 1 2 1 19 21 5 21 23 25 27 29 31 21 23 25 27 29 31 23 25 27 29 31 23 25 27 29 31 25 27 29 31 3 4 21 23 25 27 29 31 Outdoor Unit : AER 448 SCL3E AER 448 SHL3E 12.
1. Specifications 1-7 Cooling Capacity Indoor Unit : ACR 425 H RATING CAPACITY : EVAPORATOR ENT. TEMP. °C WB DB 15 17 19 21 23 25 21 23 25 27 29 31 21 23 25 27 29 31 21 23 25 27 29 31 23 25 27 29 31 25 27 29 31 27 29 31 Outdoor Unit : AER 425 SCLE AER 425 SHLE 7.
1. Specifications 1-7 Cooling Capacity Indoor Unit : ACR 425 H RATING CAPACITY : EVAPORATOR ENT. TEMP. °C WB DB 15 17 1 2 1 19 21 5 21 23 25 27 29 31 21 23 25 27 29 31 23 25 27 29 31 23 25 27 29 31 25 27 29 31 3 4 21 23 25 27 29 31 Outdoor Unit : AER 425 SCL3E AER 425 SHL3E 7.
1. Specifications 1-7 Cooling Capacity Indoor Unit : ACR 436 H RATING CAPACITY : EVAPORATOR ENT. TEMP. °C WB DB 15 17 19 21 23 25 21 23 25 27 29 31 21 23 25 27 29 31 21 23 25 27 29 31 23 25 27 29 31 25 27 29 31 27 29 31 Outdoor Unit : AER 436 SCL3E AER 436 SHL3E 10.
1. Specifications 1-7 Cooling Capacity Indoor Unit : ACR 448 H RATING CAPACITY : EVAPORATOR ENT. TEMP. °C WB DB 15 17 1 2 1 19 21 5 21 23 25 27 29 31 21 23 25 27 29 31 23 25 27 29 31 23 25 27 29 31 25 27 29 31 3 4 21 23 25 27 29 31 Outdoor Unit : AER 448 SCL3E AER 448 SHL3E 12.
1. Specifications 1-7 Cooling Capacity Indoor Unit : ADR 425 H RATING CAPACITY : EVAPORATOR ENT. TEMP. °C WB DB 15 17 19 21 23 25 21 23 25 27 29 31 21 23 25 27 29 31 21 23 25 27 29 31 23 25 27 29 31 25 27 29 31 27 29 31 Outdoor Unit : AER 425 SCLE AER 425 SHLE 7.
1. Specifications 1-7 Cooling Capacity Indoor Unit : ADR 425 H RATING CAPACITY : EVAPORATOR ENT. TEMP. °C WB DB 15 17 1 2 1 19 21 5 21 23 25 27 29 31 21 23 25 27 29 31 23 25 27 29 31 23 25 27 29 31 25 27 29 31 3 4 21 23 25 27 29 31 Outdoor Unit : AER 425 SCL3E AER 425 SHL3E 7.
1. Specifications 1-7 Cooling Capacity Indoor Unit : ADR 436 H RATING CAPACITY : EVAPORATOR ENT. TEMP. °C WB DB 15 17 19 21 23 25 21 23 25 27 29 31 21 23 25 27 29 31 21 23 25 27 29 31 23 25 27 29 31 25 27 29 31 27 29 31 Outdoor Unit : AER 436 SCL3E AER 436 SHL3E 10.
1. Specifications 1-7 Cooling Capacity Indoor Unit : ADR 448 H RATING CAPACITY : EVAPORATOR ENT. TEMP. °C WB DB 15 17 1 2 1 19 21 5 21 23 25 27 29 31 21 23 25 27 29 31 23 25 27 29 31 23 25 27 29 31 25 27 29 31 3 4 21 23 25 27 29 31 Outdoor Unit : AER 448 SCL3E AER 448 SHL3E 12.
1. Specifications ● Heating Capacity 140 Heating capacity ratio 120 B 15˚C 20˚C 25˚C CD a per % 100 ˚ ture em or t o Ind 80 60 Comp. motor power input ratio 140 1 120 B 25˚C re ˚C D eratu r temp Indoo % 100 20˚C 15˚C 2 80 60 –15 –10 –5 0 5 10 3 15 Outdoor temperature ˚C WB 0413_M_S NOTE 1. Above characteristics are based on: 1) Tubing length is 7 meters. 2) Air flow speed is high speed. 2. Minimum outdoor ambient temperature: –15°C WB 3.
1. Specifications 1-8 Noise Criterion Curves 4-Way Air Discharge Semi-concealed Type MODEL : ASR 425 H SOUND LEVEL : HIGH LOW MODEL 37 dB(A), NC 30 43 dB(A), NC 36 LOW 36 dB(A), NC 24 31 dB(A), NC 22 CONDITION : Center, Under the unit 1.
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1. Specifications 1-8 Noise Criterion Curves Concealed Duct Type MODEL : ADR 425 H MODEL CONDITION : Under the unit 1.5 m CONDITION : Under the unit 1.5 m SOURCE : 220 - 230 - 240 V, 1 Phase, 50 Hz SOURCE : 220 - 230 - 240 V, 1 Phase, 50 Hz OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar) SOUND LEVEL : HIGH 38 dB(A), NC 30 / LOW 31 dB(A), NC 21 OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.
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1. Specifications 1-9 Indoor Fan Performance Concealed Duct Type If external static pressure is too great (due to long extension of ducts, for example), the air flow volume may drop too low at each air outlet. This problem may be solved by increasing the fan speed using the following procedure: (1) Electrical component box Booster cable Fan motor Booster cable Fan motor socket (At shipment) Remove 2 screws on the electrical component box and remove the cover plate.
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1. Specifications 1-11 Installation Instructions Tubing Length (A) Single type ● Refrigerant tubing between the indoor and outdoor units should be kept as short as possible. Installation Example 1 ● The length of the refrigerant tubes between the indoor and outdoor units are limited by the elevation difference between the two units. During tubing work, try to make both the tubing length (L) and the difference in elevation (H) as short as possible. Refer to Table 1-1 for the details.
1. Specifications 1-11 Installation Instructions Selecting the Installation Site Ceiling-Mounted Type Indoor Unit Ceiling AVOID: ● areas where leakage of flammable gas may be expected. Wall ● places where large amounts of oil mist exist. 25 cm min. ● direct sunlight 25 cm min. Front view ● locations where nearby heat sources may affect performance of the unit. NOTE NOTE The rear of the indoor unit can be installed flush against the wall.
1. Specifications 1-11 Installation Instructions Selecting the Installation Site Exhaust fan Outdoor Unit Hot air Heat source AVOID: Outdoor unit ● heat sources, exhaust fans, etc. (Fig. 1-3) ● damp, humid or uneven locations. 0591_C_I DO: Fig. 1-3 ● choose a place as cool as possible. Table 1-2 A Dimensions Model Min. (cm) 25 type 10 36, 48 type 20 ● allow enough room around the unit for air intake / Min. exhaust and possible maintenance. (Fig.
1. Specifications Air discharge 1-11 Installation Instructions Selecting the Installation Site ■ Air Discharge Chamber for Top Discharge Be sure to install the air discharge chamber in the filed when: ● it is difficult to keep a space of min. 50 cm between the air discharge outlet and the obstacle. 0426_C_I ● the air discharge outlet is facing to the sidewalk and Fig. 1-6 discharged hot air annoys the passers.
1. Specifications 1-11 Installation Instructions Selecting the Installation Site ■ Wind Shield Important Wind shield (air discharge side) It is recommended to install wind shields for cooling operation in low outdoor temperature condition. (Fig. 1-10) General When the outdoor unit is installed in a position exposed to strong wind (like seasonal winds with low air temperature in winter), wind shield must be installed on the outdoor unit.
1. Specifications 1-11 Installation Instructions Electrical Wiring ■ General Precautions on Wiring (1) Before wiring, confirm the rated voltage of the unit as shown on its nameplate, then carry out the wiring closely following the wiring diagram. (7) Regulations on wire diameters differ from locality to locality. For field wiring rules, please refer to your LOCAL ELECTRICAL CODES before beginning.
1. Specifications 1-11 Installation Instructions ■ Electrical Wiring • Indoor Unit Type (F) Power Supply 2.5 mm2 Time Delay Power Supply Terminal Base Fuse or Capacity Max. Wire Circuit Diameter Capacity X, S, AS, T, U, SL 245 m 15 A 50 A 14 mm2 (AWG#6) K 588 m 15 A 25 A 5.5 mm2 (AWG#10) D 89 m 15 A 50 A 14 mm2 (AWG#6) Control Wiring (C) Inter-Unit Control Wiring 0.75 mm2 (AWG#18) Use Shielded Wiring Max. 1000 m 1) (D) Remote Control Wiring 0.
1. Specifications 1-11 Installation Instructions Electrical Wiring ● Wiring System Diagrams (1) Basic wiring diagram for standard control 1 Single type (one indoor unit) 1-1. 3-phase outdoor unit Indoor Unit Outdoor Unit B R.C.
1. Specifications 1-11 Installation Instructions ■ Electrical Characteristics Indoor Unit : ASR 425 H Outdoor Unit : AER 425 SCLE AER 425 SHLE ● Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Performance at Fan Motor Compressor 220 - 240 V / 1 phase / 50 Hz 380 - 415 V / 1 phase / 50 Hz A 0.6 / 0.63 0.62 / 0.65 12.1 / 12.3 13.32 / 13.58 kW 130 / 150 0.13 / 0.15 2.55 / 2.7 2.81 / 3.0 A 0.6 / 0.63 0.62 / 0.65 13.44 / 13.48 14.66 / 14.76 kW 130 / 150 0.13 / 0.15 2.8 / 2.
1. Specifications 1-11 Installation Instructions Electrical Characteristics Indoor Unit : ASR 425 H Outdoor Unit : AER 425 SCL3E AER 425 SHL3E ● Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Performance at Fan Motor Compressor 220 - 240 V / 1 phase / 50 Hz 380 - 415 V / 3 phase / 50 Hz A 0.6 / 0.63 0.62 / 0.65 4.45 / 4.35 4.82 / 4.73 kW 130 / 150 0.13 / 0.15 2.5 / 2.52 2.76 / 2.82 A 0.6 / 0.63 0.62 / 0.65 5.3 / 5.32 5.67 / 5.69 kW 130 / 150 0.13 / 0.15 2.98 / 3.02 3.
1. Specifications 1-11 Installation Instructions Electrical Characteristics Indoor Unit : ASR 436 H Outdoor Unit : AER 436 SCL3E AER 436 SHL3E ● Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Performance at Fan Motor Compressor 220 - 240 V / 1 phase / 50 Hz 380 - 415 V / 3 phase / 50 Hz A 0.92 / 0.93 1.24 / 1.31 6.35 / 6.39 7.01 / 7.05 kW 200 / 220 0.26 / 0.29 3.46 / 3.51 3.92 / 4.02 A 0.92 / 0.93 1.24 / 1.31 7.2 / 7.24 7.86 / 7.9 kW 200 / 220 0.26 / 0.29 3.98 / 4.
1. Specifications 1-11 Installation Instructions Electrical Characteristics Indoor Unit : ASR 448 H Outdoor Unit : AER 448 SCL3E AER 448 SHL3E ● Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Performance at Fan Motor Compressor 220 - 240 V / 1 phase / 50 Hz 380 - 415 V / 3 phase / 50 Hz A 0.92 / 0.93 1.24 / 1.31 7.7 / 7.72 8.35 / 8.37 kW 200 / 220 0.26 / 0.29 4.14 / 4.16 4.6 / 4.67 A 0.92 / 0.93 1.24 / 1.31 8.8 / 8.82 9.47 / 9.49 kW 200 / 220 0.26 / 0.29 5 / 5.04 5.
1. Specifications 1-11 Installation Instructions Electrical Characteristics Indoor Unit: ACR 425 H Outdoor Unit : AER 425 SCLE AER 425 SHLE ● Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Performance at Fan Motor Compressor 220 - 240 V / 1 phase / 50 Hz A 380 - 415 V / 1 phase / 50 Hz 0.43 / 0.43 0.62 / 0.65 12.1 / 12.3 13.15 / 13.38 90 / 100 0.13 / 0.15 2.55 / 2.7 2.77 / 2.95 0.43 / 0.43 0.62 / 0.65 13.44 / 13.48 14.49 / 14.56 90 / 100 0.13 / 0.15 2.8 / 2.88 3.02 / 3.
1. Specifications 1-11 Installation Instructions Electrical Characteristics Indoor Unit : ACR 425 H Outdoor Unit : AER 425 SCL3E AER 425 SHL3E ● Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Performance at Fan Motor Compressor 220 - 240 V / 1 phase / 50 Hz A 380 - 415 V / 3 phase / 50 Hz 0.43 / 0.43 0.62 / 0.65 4.45 / 4.35 4.77 / 4.67 90 / 100 0.13 / 0.15 2.5 / 2.52 2.72 / 2.77 0.43 / 0.43 0.62 / 0.65 5.3 / 5.32 5.62 / 5.64 90 / 100 0.13 / 0.15 2.98 / 3.02 3.2 / 3.
1. Specifications 1-11 Installation Instructions Electrical Characteristics Indoor Unit : ACR 436 H Outdoor Unit : AER 436 SCL3E AER 436 SHL3E ● Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Performance at Fan Motor Compressor 220 - 240 V / 1 phase / 50 Hz 380 - 415 V / 3 phase / 50 Hz A 0.95 / 0.98 1.24 / 1.31 6.35 / 6.39 7.01 / 7.06 kW 200 / 220 0.26 / 0.29 3.46 / 3.51 3.92 / 4.02 A 0.95 / 0.98 1.24 / 1.31 7.2 / 7.24 7.86 / 7.91 kW 200 / 220 0.26 / 0.29 3.98 / 4.
1. Specifications 1-11 Installation Instructions Electrical Characteristics Indoor Unit : ACR 448 H Outdoor Unit : AER 448 SCL3E AER 448 SHL3E ● Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Performance at Fan Motor Compressor 220 - 240 V / 1 phase / 50 Hz 380 - 415 V / 3 phase / 50 Hz A 0.95 / 0.98 1.24 / 1.31 7.7 / 7.72 8.35 / 8.38 kW 200 / 220 0.26 / 0.29 4.14 / 4.16 4.6 / 4.67 A 0.95 / 0.98 1.24 / 1.31 8.8 / 8.82 9.47 / 9.5 kW 200 / 220 0.26 / 0.29 5 / 5.04 5.
1. Specifications 1-11 Installation Instructions Electrical Characteristics Indoor Unit : ADR 425 H Outdoor Unit : AER 425 SCLE AER 425 SHLE ● Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Performance at Fan Motor Compressor 220 - 240 V / 1 phase / 50 Hz 380 - 415 V / 1 phase / 50 Hz A 0.84 / 0.9 0.62 / 0.65 12.1 / 12.3 13.56 / 13.85 kW 180 / 210 0.13 / 0.15 2.55 / 2.7 2.86 / 3.06 A 0.84 / 0.9 0.62 / 0.65 13.44 / 13.48 14.9 / 15.03 kW 180 / 210 0.13 / 0.15 2.8 / 2.
1. Specifications 1-11 Installation Instructions Electrical Characteristics Indoor Unit : ADR 425 H Outdoor Unit : AER 425 SCL3E AER 425 SHL3E ● Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Performance at Fan Motor Compressor 220 - 240 V / 1 phase / 50 Hz 380 - 415 V / 3 phase / 50 Hz A 0.84 / 0.9 0.62 / 0.65 4.45 / 4.35 4.89 / 4.8 kW 180 / 210 0.13 / 0.15 2.5 / 2.52 2.81 / 2.88 A 0.84 / 0.9 0.62 / 0.65 5.3 / 5.32 5.74 / 5.76 kW 180 / 210 0.13 / 0.15 2.98 / 3.02 3.
1. Specifications 1-11 Installation Instructions Electrical Characteristics Indoor Unit : ADR 436 H Outdoor Unit : AER 436 SCL3E AER 436 SHL3E ● Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Performance at Fan Motor Compressor 220 - 240 V / 1 phase / 50 Hz 380 - 415 V / 3 phase / 50 Hz A 1.43 / 1.54 1.24 / 1.31 6.35 / 6.39 7.13 / 7.19 kW 290 / 340 0.26 / 0.29 3.46 / 3.51 4.01 / 4.14 A 1.43 / 1.54 1.24 / 1.31 7.2 / 7.24 7.99 / 8.05 kW 290 / 340 0.26 / 0.29 3.98 / 4.
1. Specifications 1-11 Installation Instructions Electrical Characteristics Indoor Unit : ADR 448 H Outdoor Unit : AER 448 SCL3E AER 448 SHL3E ● Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Performance at Fan Motor Compressor 220 - 240 V / 1 phase / 50 Hz 380 - 415 V / 3 phase / 50 Hz A 1.48 / 1.58 1.24 / 1.31 7.7 / 7.72 8.5 / 8.53 kW 310 / 360 0.26 / 0.29 4.14 / 4.16 4.71 / 4.81 A 1.48 / 1.58 1.24 / 1.31 8.8 / 8.82 9.62 / 9.66 kW 310 / 360 0.26 / 0.29 5 / 5.04 5.
2. Processes and functions 2. PROCESSES AND FUNCTIONS 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 2-9 2-10 2-11 2-12 2-13 2-14 2-15 2-16 2-17 2-18 2-19 Room Temperature Control ......................................................................II - 2 (A) Cooling ................................................................................................II - 2 (B) Heating ................................................................................................
2. Processes and functions 2-1 Room Temperature Control The unit adjusts room temperature by turning the outdoor unit’s compressor ON and OFF. This process is controlled by the thermostat located in the indoor unit. The figures on this and the next page show how each part of the system performs as the room temperature changes and the thermostat activates the compressor to start (thermo ON) or stop (thermo OFF). Fig. 1 shows about the cooling cycle, and Fig. 2 shows about the heating cycle.
2. Processes and functions (B) Heating THERMO. ON REMOTE CONTROL SENSOR (Only for wireless remote controller) SET. +1°C SETTING TEMP. SET. –1°C THERMO. ON THERMO. OFF THERMO. OFF THERMO. ON THERMO. OFF BODY SENSOR THERMO. ON THERMO. OFF THERMO. ON THERMO. ON +1°C SET TEMP.+4°C SHIFT –1°C SET TEMP.
2. Processes and functions 2-2 Cold Draft Prevention (Heating Cycle) The cold draft prevention function controls indoor fan speed so a strong draft of cold air will not blow out before the indoor heat exchange coils have warmed up. ❑ STANDBY shows on the remote controller when the indoor fan speed is LL (very low) or OFF. This condition occurs in the following 3 cases: • During Thermo OFF (refer to 2-1 B).
2. Processes and functions 2-3 Automatic Fan Speed (Indoor Unit) By pressing the FAN SPEED button on the remote controller, the fan speed can be set at one of four steps: AUTO., HI., MED., or LO. When set at AUTO. the indoor unit fan speed will be automatically adjusted to the room temperature as the two charts shown below. (A) Cooling ROOM TEMP. (deg) +3 +2 +1 SET TEMP. INDOOR FAN SPEED H M L M H H : High L : Low M : Middle LL: Very low 0433_M_S Fig.
2. Processes and functions 2-4 Outdoor Fan Speed Control To optimize performance in air conditioner, the outdoor fan speed is selected automatically according to the outdoor temperature. Note that in both Cooling and Heating modes, the fan comes on at first at high speed (H mode) for 5 seconds. Since outdoor conditions sometimes make it difficult for the fan to start, this sudden surge of power may be necessary.
2. Processes and functions 2-5 Freeze Prevention (Cooling) Freeze Prevention keeps the indoor heat exchange coil from freezing. Freezing reduces the efficiency of the unit, and frost build up on the coil blocks cool air circulation from the indoor unit's fan. MIN. VALUE OF EITHER E1 OR E2 INDOOR UNIT COIL TEMP. 3 1 –0.5 0 –0.
2. Processes and functions 2-6 Condensing Temperature Control (Cooling) Condensing temperature is controlled by the outdoor heat exchanger coil temperature as sensed by sensor C2. (°C) 60 C2 57 40 FMO H, L or LL ELECTRONIC CONTROL VALVE H H or L +50 step /30 sec L LL +50 step /30 sec 1906_M_I Fig. 9 Chart Explanations and notes 1 2 1 ❑ This chart shows how the outdoor fan speed and the electronic refrigerant control valve react to coil temperature to control condensing temperature.
2. Processes and functions 2-7 Overload Protection (Heating) This function prevents the air conditioner from overloading. (°C) 64 61 INDOOR UNIT COIL TEMP. (E2) 60 59 55 53 OVERLOAD PROTECTION OVERLOAD PROTECTION FUZZY CONTROL ELECTRONIC EXPANSION VALVE OUTDOOR FM FUZZY CONTROL OPEN OPEN START UP COMPENSATION OFF H or M H L H or M 1565_M_S Fig.
2. Processes and functions 2-8 Discharge Temperature Control (Cooling and Heating) This function prevents the compressor motor from burn out by overheating. 115 105 95 93 DISCHARGE GAS TEMP. (°C) 90 85 OUTDOOR FAN SPEED H or M COMPRESSOR ELECTRONIC EXPANSION VALVE (DISCHARGE TEMP.) H or M L ON OPEN OPEN TRIP IS OPERATED. 1 1566_M_S Fig. 11 Chart Summary and Explanations 2 1 ❑ Discharge temperature is sensed by TH8 (discharge gas sensor).
2. Processes and functions 2-9 Auto. Mode for Automatic Heating/Cooling Switching A COOLING SELECTION TEMP. +2.5 deg SHIFT SET TEMP. +2 deg REMOTE CONTROLLED SET TEMP. B SHIFT SET TEMP. –2 deg HEATING SELECTION TEMP. –3 deg C HEATING COOLING HEATING 0440_M_S Fig. 12 Chart summary and Explanations ❑ This chart shows how the Operation Mode (COOLING or HEATING) is determined by the microprocessor taking the room temperature into consideration.
2. Processes and functions 2-10 Defrosting Control, Outdoor Heat Exchanger Coil (Heating) When the outdoor temperature is low, frost may form on the outdoor heat exchanger coil. When this occurred, the defrosting system operates. The microprocessor in the outdoor unit monitors the relationship between the temperature of the outdoor heat exchanger coil and the outdoor temperature so it can defrost when necessary. Flow of Defrosting OUTDOOR COIL TEMP.
2. Processes and functions 2-11 4-Way Valve, Solenoid Control The basic function of the 4-way valve is to direct the refrigerant in the correct direction according to the Operation Mode (COOLING or HEATING) selected. The following two charts show conditions of the controls and functions listed in the left hand column when the solenoid is ON or OFF.
2. Processes and functions (B) AUTO Control Mode ON POWER SOURCE OFF OPERATION BUTTON ON MORE THAN 10 MINUTES (THERMO. OFF) AUTO COOL MODE CONTROL HEAT MORE THAN 10 MINUTES (THERMO. OFF) COOL HEAT HEAT THERMO. OFF THERMO. ON 3 MINUTES COMPRESSOR OFF MORE THAN 3 MINUTES ON OFF ON OFF MORE THAN 30 – 50 SECONDS SOLENOID COIL (4-WAY VALVE) OFF ON OFF ON MORE THAN 30 – 50 SECONDS ON OFF ON 0445_M_S Fig.
2. Processes and functions 2-13 Electronic Expansion Valve ❑ This valve allows very precise and smooth control of the amount of refrigerant flow in the system. Since the valve is operated by a step motor, the control circuits can open or close it in very exact amounts, so the degree of heating or cooling can be changed by just a little, or changed very quickly or slowly. (Completely close …… 0 step) (Full open................ 480 step) Min. open Model Max.
2. Processes and functions 2-15 Compressor Current Detection Circuit ❑ The Compressor Current Detection Circuit detects the compressor current and, depending on the current range, can stop the compressor motor so it will not be damaged by overcurrent. ❑ Overcurrent can be caused by several factors, particularly mechanical seizing of the compressor or liquid backflow. Either of these conditions can hold the compressor to run, and thus drawing so much current that the motor can burn out. Comp. Amps.
2. Processes and functions 2-16 Dehumidifying Operation Dehumidifying operation uses the cooling cycle to remove moisture from the air, but by running an indoor fan at a low speed, to dehumidify without greatly lowering room temperature. In this mode, the microprocessor automatically controls the ON-OFF operation between +2 deg. and -2 deg. of the set temperature. ROOM TEMP. (DEG) A SET TEMP. B +2deg –2deg C 0448_M_S Fig.
2. Processes and functions 2-17 Auto-flap Control (Indoor Unit : 4-Way Air Discharge Semi-Concealed Type Ceiling-Mounted Type) Auto flap can control the air flow in 5 steps. F1 F2 60° F3 F4 F5 Cooling F1~F3 Heating F1~F5 1328_M_I Fig.
2. Processes and functions 2-18 Controlled by Electronic Expansion Valve The circulation volume of the refrigerant is controlled by a pulse type electronic control valve. When the power is switched ON, the opening degree of the electronic control valve is controlled between 90 and 480 steps after setting the initial step at the time when the thermostat is ON.
2. Processes and functions 2-19 Voltage Detection Control When the power voltage falls below 160 V (voltage between N phase and each phase) or rises above 260 V, the “P2” alarm is issued to protect the compressor and electrical components.
3. Electrical data 3. ELECTRICAL DATA 3-1 3-2 Indoor Units (Electric Wiring Diagram, Schematic Diagram) ................. III - 2 4-Way Air Discharge Semi-concealed Type ...........................................III - 2 Ceiling Mounted Type ..............................................................................III - 4 Concealed Duct Type ..............................................................................III - 6 Concealed Duct High Static Pressure Type ..................................
1 2 1 3 4 5 3-1 To Remote Control Switch DPH LSW GRN/YEL 1 N 1 2 LM GRN/YEL 3 U1 U2 R1 R2 R3 3 RC1 Terminal Plate(8P) FMI 49FI 1 3 R N RN2(WHT) PNK BRN BLK YEL ORG VLT WHT GRY GRY S 1 2 3 4 5 6 7 8 9 Connector P 1 2 3 4 5 6 7 8 9 9P(WHT) 1 2 3 4 VCC(WHT) 1 4 YEL BLU BLK WHT GRY PNK S P Connector 8P(RED) 1 3 1 3 1 3 1 3 1 2 3 T20(GRY) DPH (BLU) LM (GRN) LS (WHT) PNL (GRN) 1 3 5 7 LL L H HH R N RN3(WHT) FM (WHT) 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 GRY GRY RED RED BRN BRN
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1 2 1 3 4 5 Unit Control Line To Remote Control Switch GRN/YEL L N 1 2 GRN/YEL 3 U1 U2 R1 R2 R3 FMI RC1 Terminal Plate(8P) MOV 49FI TR1 BLK ORG RED YEL BLK GRY 1 2 3 4 1 4 1 3 5 7 1 3 1 3 1 2 3 4 5 VCC(WHT) RN3 (WHT) FM(WHT) T20 (GRY) FS (RED) T6 (WHT) RED RED BRN BRN GRY GRY 1 3 RN2(WHT) WHT WHT 1 2 3 RC(BLU) RED WHT BLK YEL ORG VLT WHT S 1 2 Connector P 1 2 2P(BLK) BLK BLK 1 2 OC(BLU) S 1 2 3 4 5 6 7 8 9 Connector P 1 2 3 4 5 6 7 8 9 9P(WHT) Controller (CR-X25
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1 2 1 3 4 5 Unit Control Line To Remote Control Switch GRN/YEL L N 1 2 3 U1 U2 R1 R2 R3 GRN/YEL RC1 Terminal Plate(8P) FMI TR1 TH5 49FI 1 3 1 2 1 2 3 1 3 1 2 3 4 R N RN1(BLK) SG1 SG2 OC(BLU) SG 12V G RC(BLU) R N RN2(WHT) VCC(WHT) PNK BRN BLK YEL ORG VLT WHT GRY GRY Connector 9P(WHT) 1 4 GRY GRY 1 3 1 2 T20(GRY) Discharge Air (GRN) 1 3 5 7 R N LL L H HH RN3(WHT) FM (WHT) BLK BLK 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 YEL ORG VLT WHT RED RED BRN BRN WHT WHT RED WHT BLK
3. Electrical data 3-1 Indoor Units 6 Concealed Duct Type : ADR 425 H - ADR 436 H - ADR 448 H • Schematic Diagram 1 RCS 2 3 CR-X253GH Controller F1(5A) 8P-1(L) T20 1 1 SG RC12V G TR1 R 1 AC 230V 8 1X 2 3 4 8P-2(N) RY2 2X 1 VCC T6 49FI 1 RN2 3 9 3X PNL T20 3X 1 L H HH 3 5 7 DPH DP R 1 3 4 5 L 6 H HH 1 2 1 FS 3 1 2 7 1 3X 2 HT 2 DP 1 DP.
1 2 1 3 4 5 BRN RED WHT GRN/YEL RED L1 BLK CT GRN/YEL A R S T E 3P(WHT) CT1 1 3 3P(BLK) 52C 1 3 31 ORG GRY U V W TH6 C2 1 (RED) 2 BLK BLK TH7 WHT WHT TH8 Discharge 1 Gas (GRN) 2 ∗ 9P(WHT) CN26 1 3 5 7 9 BRN BLK 52C BLK BLK L 3P(YEL) 20S 1 3 3P(RED) 3P(WHT) 63PH RS 1 3 3 1 2P VCC (WHT) 1 2 BRN BRN RED RED C1 1 (BLK) 2 N WHT WHT WHT Controller (CR-CR253GHL5) WHT RED L N ∗ 2 CN2 1 2P (BLU) BLU PNK BLU BLU 1 2 3 4 To Indoor Unit Terminal 1 2 Plate (2P) Terminal P
3. Electrical data 3-2 Outdoor Units 1 AER 425 SCLE - AER 425 SHLE • Schematic Diagram Terminal Plate (6P) -1 63PH L1 F1(3.
1 2 1 3 4 5 To Indoor Unit Terminal 1 2 Plate (2P) ∗ 2 CN2 1 2P (BLU) BLU PNK Controller (CR-CR483GHL8) N BRN BLU WHT RED GRN/YEL BLK BLU RED WHT BRN RED RED CT L3 L2 L1 GRN/YEL A R S T E BRN BLK 31 ORG GRY 52C III - 16 U V W 9P(WHT) CN26 1 3 5 7 9 L BLK BLK TH6 C2 1 (RED) 2 BLK BLK TH7 WHT WHT TH8 Discharge 1 Gas (GRN) 2 ∗ 3P(BLK) 52C 1 3 3P(WHT) CT1 1 3 C1 1 (BLK) 2 3P(YEL) 20S 1 3 3P(RED) 3P(WHT) 63PH RS 3 1 1 3 2P VCC (WHT) 1 2 BRN BRN Terminal Plate (8P) WHT
3. Electrical data 3-2 Outdoor Units 2 AER 425 SCL3E - AER 425 SHL3E • Schematic Diagram Terminal Plate (8P) -1 63PH L1 F1(3.
1 2 1 3 4 5 To Indoor Unit Terminal 1 2 Plate (2P) ∗ 2 CN2 1 2P (BLU) BLU PNK Controller (CR-CR483GHL8) N BRN BLU WHT RED GRN/YEL BLK L2 GRN/YEL A R S T E BRN BLK 31 ORG GRY 52C III - 18 U V W BLK BLK TH6 C2 1 (RED) 2 BLK BLK TH7 WHT WHT TH8 Discharge 1 Gas (GRN) 2 ∗ 9P(WHT) 3P(BLK) CN26 52C 1 3 1 3 5 7 9 3P(WHT) CT1 1 3 C1 1 (BLK) 2 L 3P(YEL) 20S 1 3 3P(RED) 3P(GRN) 3P(WHT) RS 63PH 63PL 1 3 1 3 3 1 2P VCC (WHT) 1 2 BRN BRN L1 WHT WHT CT L3 RED RED BLU RED WHT B
3. Electrical data 3-2 Outdoor Units 3 AER 436 SCL3E - AER 436 SHL3E - AER 448 SCL3E - AER 448 SHL3E • Schematic Diagram Terminal Plate (8P) -1 63PH L1 F1(3.
4. Service procedures 4. SERVICE PROCEDURES 4-1 Troubleshooting ...................................................................................... IV - 2 (1) Check before and after Troubleshooting.......................................... IV - 3 (2) General Troubleshooting Flow Chart: Diagnosis and Remedy ........ IV - 5 (3) Meanings of alarm messages .......................................................... IV - 7 (4) LED Indication on the Outdoor Unit’s P.C.B. Ass’y..........................
4. Service procedures 4-1 Troubleshooting This section explains: 1 2 1 ❑ What the LED codes mean ❑ What the remote control unit display screen messages mean ❑ How to use the flow charts to find and solve problems ❑ How to use the self-diagnostic tests to find parts that aren’t working right This unit is made to be trouble free, and not need much service. However, with time, moving parts wear out, electronic components break down, and sometimes misuse damages the unit.
4. Service procedures (1)-1 Check before and after Troubleshooting (AER 425 SHLE) Many problems may happen because of wiring or power supply problems, so you should check these areas first. Problems here can cause false results in some of the other tests, and so should be corrected first. 1 . Check power supply wiring ❑ Check the power supply wires are correctly connected between terminal No. 1 & 2 on the 3P terminal plates in the indoor unit and the outdoor unit. 2 .
4. Service procedures (1)-2 Check before and after Troubleshooting (AER 425 SHL3E - AER 436 SHL3E - AER 448 SHL3E) Many problems may happen because of wiring or power supply problems, so you should check these areas first. Problems here can cause false results in some of the other tests, and so should be corrected first. 1 . Check power supply wiring ❑ Check that power supply wires are correctly connected to terminal No.5 through No.8 on the 8P terminal plate in the outdoor unit.
4. Service procedures (2) General Troubleshooting Flow Chart: Diagnosis and Remedy When you have found a major problem, such as refrigerant not flowing in the system or reduced air circulation, come to this section and find the box listing the problem. Connected to the box are the main causes of the problem and their remedies. To find out which malfunction is happening in your case, check the remote controller for an Alarm Message, and follow the steps in section 3). (A) Cooling a.
4. Service procedures (B) Heating b. Heating Poor heating Is setting temp. suitable ? Change the setting temp. Is heating load too large ? Review heating load estimate. 4-way valve is defective. Replace the valve. Refrigerant shortage Charge with refrigerant. Electronic refrigerant control valve is defective. Replace the valve. Compressor is defective. Replace the compressor. Service valves are not fully open. Open the valves fully. Air filter is clogged. Clean the filter.
4. Service procedures (3) Meanings of alarm messages If an error occurred in the air conditioner, the error condition is presented by indicating the error code in the wired remote controller display or by the combination of lamp statuses for operation, timer and heat stand-by (OFF status and flashing status). Wired remote Wireless remote controller controller display display Possible causes of troubles Error receiving of serial communications signal.
4. Service procedures Wired remote Wireless remote controller controller display display • Fault with compressor and its circuit • Thermistor failure Possible causes of troubles Indoor thermistor is either open or short. Outdoor thermistor is either open or short. Protective device for compressor is activated. Operation lamp and heat stand-by lamp flash alternately. Indoor coil temp. (E1 = TH2) cannot be detected. F01 Indoor coil temp. (E2 = TH3) cannot be detected.
4. Service procedures (4) LED Indication on the Outdoor Unit’s P.C.B. Ass’y If something goes wrong with the outdoor unit, LED lamps on the outdoor P.C.B. Ass’y light up to show the cause of the trouble, in addition to the Alarm message on the remote controller. LED 2 on LED 1 on Remote P.C. board P.C. board controller 䢇 䢇 No message 䢇 䡬 E06, E07, L04 䢇 * No message 䡬 䢇 P02 䡬 䡬 P04, P05 Possible cause of trouble Normal Outdoor unit serial communication signal is abnormal.
4. Service procedures (5) 1) Symptoms and parts to inspect Symptom: LCD on the remote controller does not display and remote controller does not operate.
4. Service procedures 2) Symptom: LCD on the remote controller displays “CHECK E01”. (Unusual communication between remote controller and indoor unit.) Start Remote controller judges itself with self-diagnostic functions NG Replace the remote controller. OK Is there an open or a contact defect in the No. 1 line of the remote controller? Yes Correct the wiring.
4. Service procedures 4) Symptom: LCD on the remote controller is displaying “CHECK E04”. (Unusual communication between the indoor and outdoor units.) Start Cut the breaker and remove the indoor/outdoor unit control lines connected to U1 and U2 of the indoor unit 8P terminal plate. After shorting the test pin (CN2) on the indoor unit PCB, switch the breaker on.
4. Service procedures 6) Symptom: LCD on the remote controller is displaying “CHECK E06”. (Unusual communication between the indoor and outdoor units) Start Is there a cut line or contact defect between an indoor and outdoor unit’s control line? Yes Correct wiring. No 1903_M_I Influenced by external noise * See the section of INSTALLATION INSTRUCTION concerning with flexible combination system. 7) Symptom: LCD on the remote controller is displaying “CHECK E08”.
4. Service procedures 9) Symptom: LCD on the remote controller displays “CHECK P01”. (Indoor fan protection thermostat operation warning) Start Is there 220-240 V AC between S4 and T20-3 on the indoor unit PCB? Yes No Yes Is there 220-240 V AC between T20-3 and S4 after T20-1 and T20-3 on the indoor unit PCB shorted? No Is the indoor fan wire winding protection thermostat (49FI) off? Correct the connection Yes No Replace the indoor fan. Replace the indoor unit PCB.
4. Service procedures 10) Symptom: LCD on the remote controller displays “CHECK P02”. (Compressor / outdoor fan protection thermostat operation warning / power supply voltage abnormality) Start Is the power supply to the outdoor No unit normal? (Voltage / defective phase?) Check the power breaker etc. and repair. Yes Is the fuse on the outdoor unit PCB blown (F1 and F2)? Yes Replace the fuse. No Is the high voltage switch (63 PH) off? Yes Replace the outdoor unit PCB.
4. Service procedures 11) Symptoms: LCD on the remote controller displays “CHECK P03”. (Alarm for unusual discharge temp. of compressor) Start Unusual discharge gas temperature • Refrigerant shortage • Clogged refrigerant circuit • Electronic refrigerant control valve defect (indoor unit) 0343_M_I 12) Symptom: LCD on the remote controller displays “CHECK P04”. (High-pressure switch activation warning) Start The system does not operate again.
4. Service procedures 13) Symptom: LCD on the remote controller displays “CHECK P05”. (Negative phase detection operation warning) Start Is the power supply to the outdoor unit normal? (Voltage defective phase?) No Check the power breaker etc. and repair Yes Does the outdoor unit operate when two of the three phases are changed? (Actuation of negative phase protector) Yes No problem No Is the fuse (F1, F2) on the indoor unit PCB blown? Yes Replace the fuse.
4. Service procedures 15) Symptom: LCD on the remote controller displays “CHECK E16”. Start When the group of the units are installed, is there any mis-cross between inter unit control wiring and refrigerant tubing? Yes Repair the wiring. No Are the total capacities of indoor units to that of outdoor units more than 107%? Yes Select indoor units which match with the outdoor capacity. No Confirm less than 5 indoor units are connected.
4. Service procedures 17) Symptom: LCD on the remote controller displays “CHECK H01, H02, H03”. (PC compressor current detection) * Please check the related part described in the following chart after confirming the code setting (S4) of the outdoor unit’s capacity on the PCB in the outdoor unit. Start “CHECK H01” display “CHECK H03” display “CHECK H02” display Compressor overload detection Compressor current detection circuit defect Compressor lock detection • Insufficient voltage • Comp.
4. Service procedures (6) 1) Procedures When a Specific Component Does Not Work Indoor fan does not operate. Is fan motor capacitor normal ? No Replace the capacitor. Yes Is there voltage output of P.C.B. Ass'y for fan motor ? No Replace the P.C.B. Ass'y in the indoor unit. Yes • Check resistance of fan motor winding. Out Replace the fan motor. 0650_M_S 2) Flaps in indoor unit’s air outlet does not operate, when you press SWEEP button. No Check the louver motor resistance.
4. Service procedures 4) Compressor motor does not operate. Does compressor motor magnetic No Replace the compressor contactor (52C) actuate ? motor magnetic contactor. Yes Check resistance of compressor motor winding. NG Replace the compressor. 0461_M_I 5) Outdoor fan does not operate. Are auxiliary relays (1Y, 2Y) normal ? No Replace the relays. Yes Is fan motor capacitor normal ? No 1 Replace the capacitor. Yes Is there voltage output of P.C.B. Ass’y for fan motor ? No Replace P.C.B.
4. Service procedures (7) Service Functions of Remote Controller From the remote controller you can control both the operation and settings of the unit as well as perform several useful service checks. This section explains how to use the remote controller on the following items from (A) to (J). (A) Set service check switches. (B) Use the test run procedure. (C) Check the sensor temperature readings. (D) Find out about past service problems. (E) Check the remote controller itself for correct operation.
4. Service procedures (B) Use the test run procedure ❏ The purpose of the test run function is to let you control the operation of the unit directly without turning the unit on or off by thermostat. As indicated in the following procedure, be sure to stop test run operation when you finish the procedure, or the air conditioner may be damaged. ❏ To protect the air conditioner from overloading, the outdoor unit will not start running for 3 minutes after power is applied or the unit is turned OFF.
4. Service procedures (C) Check the sensor temperature readings The air conditioner has thermo sensors which are used to control the unit. ❏ Each sensor has an address which is made up of the indoor unit address, and the sensor address. The indoor unit address is used only when several units are hooked up to one remote controller (group control). If there is only one unit, made up of one indoor and one outdoor unit, then only the sensor address should be put in, as shown in the procedure below.
4. Service procedures Refer to the table below for the relationship between the sensor address and the location of the sensor. Relationship between the sensor address and the location of sensor Sensor Address (CODE No.) Indoor Unit Location of Sensor (Themistor): ˚C 01 02 03 04 05 06 07 08 09 Outdoor Unit 0A 0B 0C 0D 0E 0F 10 11 12 13 14 TH1 TH2 TH3 TH4 TH5 TH8 TH7 TH6 — Indoor air suction Temp. Indoor coil Temp. (E1) Indoor coil Temp. (E2) Indoor coil Temp. (E3) Indoor discharge air Temp.
4. Service procedures This picture shows the service check display. UNIT No. UNIT No. 1–1 R.C. No. Refrigerant Circuit No. No. CODE No. CODE No. CHECK Alarm message SERVICE 0358_M_I c. A maximum of 4 alarm messages can be accessed by pressing either SET TEMP button or as follows. MODE NOTE Past SET TEMP. Pressing CL (Clear) button will clear all the service history. Present ... accessed in order of “Past Present”. Present ... accessed in order of “Present Past”.
4. Service procedures Important Never press CL (clear) button unless you want to erase the accessed data in memory. Follow the procedure below only when erasing is necessary. ❏ To erase accessed data, press the CL button. ❏ When erasing is finished,“----” mark appears on the controller’s display. CAUTION After checking the alarm messages, be sure to press the TEST / CHK button.
4. Service procedures (F) Execute the auto. address operation ❏ Auto. address operation is executed by pressing the A. ADD (S1) button of outdoor unit’s PCB usually. For your convenience it can be executed by remote controller also. a Press the TEST / CHK and seconds. ( b Set CODE No. A1 with (SET TEMP) button. AIR FLOW UNIT FLAP , In this mode, the auto. address operation is executed at each R.C. (Refrigerant Circuit) line one by one. MODE R.C. CODE No.
4. Service procedures (G) Confirm and change the indoor unit address ❏ The purpose of the above function is to let you confirm the indoor unit address after the auto. address operation, and change the indoor unit address if it is needed. a Press the TEST / CHK and seconds. AIR FLOW UNIT FLAP ( ) buttons at the same time for more than 4 MODE R.C. CODE No. SET TEMP. TIMER SET FAN SPEED SETTING SET DATA SET CL ON • OFF • TEST / CHK 0362_M_I b Select the R.C. No.
4. Service procedures e Set the required new indoor unit’s No. by pressing the AIR FLOW UNIT FLAP , ( ) button. MODE R.C. Ex: UNIT No. 3-6: currently registered indoor unit address No. CODE No. SET TEMP. TIMER SET FAN SPEED SETTING SET DATA SET Required new indoor No.8: SET DATA CL * In this case, UNIT No. 3 ≠– 6 (current) ON • OFF • TEST / CHK 3 – 8 (NEW : after pressing the TEST / CHK button) 0364_M_I f Press the SET button.
4. Service procedures (H) Change the shift temperature in heating mode ❏ If the indoor unit is installed at high location (ex. ceiling level), the thermostat tends to turn off at heating mode because of the hot air temperature around ceiling level. In order to solve the problem, the shift temp. (valid while heating only) is set when shipped from factory. ❏ If the shift temp. is not enough (ex. the indoor unit is installed at position higher than 3 m), the shift temp.
4. Service procedures (I) Set the indoor unit address ❏ This function is usable if the auto. address operation is not available. Indoor unit address can be set one by one by remote controller. NOTE 1) In case of group control, branch wiring for group control should be removed temporarily. 2) In case of remote controllerless system, remote controller should be connected with the indoor unit temporarily. a Short the two terminals of DISP PIN on indoor unit PCB. (DISP PIN : Refer to P.
4. Service procedures d Set the No. of R. C. which you want to set with AIR FLOW UNIT FLAP , ( ) button. Ex. No. of R. C. will be set 2. MODE UNIT No. R.C. No. SET TEMP. CODE No. TIMER SET FAN SPEED SETTING SET DATA SET CL ON • OFF • TEST / CHK 0369_M_I e Press the SET button. UNIT No., CODE No. 12, SETTING and SET DATA (0002) change from flashing to ON state. f Select the CODE No. 13 to set the indoor unit No. with the , (SET TEMP) button. g Set the indoor unit No.
4. Service procedures i Select the code No. 14 to set group setting with the j Set the No. of group setting as shown below with the AIR FLOW UNIT FLAP R.C. No. CODE No. SET TEMP. TIMER SET FAN SPEED SETTING SET DATA SET (SET TEMP) button. , ( ) button. Nos. of group setting. 0 : Standard system (except group control) 1 : Main indoor unit in case of group control 2 : Sub indoor unit in case of group control 99: No setting (at factory shipment) MODE UNIT No.
4. Service procedures (J) Change the period of the filter timer ❏ If the period of filter timer is not suitable (for example in case of dirty environment), the period can be shortened to half as follows: a Press the TEST / CHK button for more than 4 seconds. AIR FLOW UNIT FLAP MODE UNIT No. R.C. No. CODE No. SET TEMP.
4. Service procedures 4-2 Checking the Electrical Components (1) Measurement of Insulation Resistance • The insulation is in good condition if the resistance exceeds 1 MΩ. 1 Power Supply Wires Clamp the earthed wire of the Power Supply wires with a lead clip of the insulation resistance tester and measure the resistance by placing a probe on either of the power wires. (Fig. 25) Then measure the resistance between the earthed wire and the other power wire. (Fig.
4. Service procedures (2) Measurement of Insulation Resistance for Electrical parts Probe • Disconnect the connector of the desired electric part from terminal plate, P.C.B. Ass’y, etc. (Fig. 27) • Similary, disconnect the lead wires from compressor, capacitor, etc. (Fig. 28) Clip Copper tube or metallic part • Measure the resistance in the same manner as illustrated on the right. Refer to Electrical Wiring Diagram. Insulation tester NOTE 0640_X_S Fig.
4. Service procedures (3) Checking the Protective Devices • Disconnect the connector, which consists of P (plug) and S (socket) when you want to check the protective device. • Then check continuity among plug’s (and/or socket’s) terminal as in Fig. 29. • Normality of the protective device can be judged by the following table. The Protective Device is proved normal if there is a continuity between terminals.
4. Service procedures (4) Checking the Electrical Parts 1 Power transformer (TR1) ................. Indoor unit • Primary • Secondary *Measure the coil resistance. ; Measure the resistance between No.1 and No.3 (WHT lead wires) terminals of 3P (WHT) socket connected to power transformer. 14V ; Measure the resistance between No.1 and No.2 (RED lead wires). 10V ; Measure the resistance between No.3 and No.4 (BRN lead wires). Refer to “1-3 Other component specifications”. 2 Power transformer (TR) ...
4. Service procedures 6 Solenoid coil of the electronic refrigerant *Measure the coil resistance. control valve (ERCV) ………… Indoor unit • Measure the resistance between No. 5 (GRY lead wire) and other terminals (another color of lead wires) of 5P (WHT) plug connected to the solenoid coil. Refer to “1-2-(A) Major component specifications”. 7 Compressor motor (CM) ……… Outdoor unit • *Measure the coil resistance.
4. Service procedures 0 Fuse on indoor and outdoor P.C.B. Ass’y …. Both in indoor and outdoor unit *Check the continuity. • Remove the P.C.B. Ass’y from the electrical component box. Then pull out the fuse from the P.C.B. Ass’y. (Fig. 31) Fuses Fuses Indoor P.C.B. Ass’y 0644_X_S Outdoor P.C.B. Ass’y 0653_X_S Fig. 31 • Then check the continuity of the fuse by using the multimeter. (Fig. 32) Fuse 1 0645_X_S Fig.
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4. Service procedures (6) Thermistor Characteristic Curve (1) Room temp. sensor : TH1 (KTEC-35) TH5 (KTEC-35) (2) Indoor heat exch. coil sensor : TH2(E1), TH3(E2), TH4(E3) Outdoor heat exch. coil sensor : TH6(C1), TH7(C2) ( PBC-41E) ( PB3M-41E) 40 35 10 30 8 Resistance (kn ) Resistance (kn ) 9 7 6 5 4 25 20 15 10 3 5 2 0 1 –20 10 15 20 25 30 35 –15 –10 –5 0 5 Temperature (°C) 40 Temperature (°C) 10 15 20 0375_M_I 1 0374_M_I (3) Compressor discharge gas temp.
4. Service procedures (7) P.C.B. Setting ● Setting of outdoor control PCB (A) Standard control (single outdoor unit) In case of single outdoor unit installation, even if in case of twin, triple or quartet type (2, 3 or 4 indoor units), no setting necessary. Keep factory shipment state (R.C. address is set in “0”). In this case, auto. address operation takes place automatically for the first time when the power is switched on. This takes about a few minutes.
4. Service procedures (8) R.C. Address Setting Method Outdoor unit R.C. address setting method In case of group control or central control, set the R.C. address to 1, 2, 3, ... according to the No. of outdoor units. Outdoor control PCB CN4 (2P Black) Refrigerant circuit address (factory setting = 0) Refrigerant circuit address (black) 0 : S2 Refrigerant circuit address (2P DIP switch, green or Blue) 10 20 position position ON ON side A.
4. Service procedures 7 Complete the auto. address operation by pressing the TEST / CHK button. (9) Automatic Address Setting Method — For group control and central control with multiple outdoor units — Carry out automatic address setting with the remote controller. (1) All auto. address operation 1 Press the TEST / CHK and ( ) buttons at the same time for more than 4 seconds. 2 Press the SET button after confirming the CODE No. AA (CODE No. AA: All Auto. address operation).
4. Service procedures (11) Items to Check Prior to Test Run (1) Turn on the power supply switch more than 5 hours before in order to charge the crank case heater. (2) Fully open the outdoor service valve after making the leak inspection of field connected tubing, vacuuming, and gas charging if necessary. (3) Check the capacity code and model code setting. * The factory setting is as shown in the table. Double check it. * The capacity code is set by S4 (green, 4P DIP switch) on outdoor control PCB.
4. Service procedures (12) Test Run Procedure Start Multiple remote control? Yes Turn on RCU address SW of sub remote control unit No Recheck the test items before test operation. Check the indoor and outdoor unit combination (wiring). Yes Single type? (One indoor unit and one remote controller for one outdoor unit) Multiple indoor units for one outdoor units? No Turn on power supply for indoor units side first Then turn on power supply for outdoor unit side.
5. Appendix 5. APPENDIX 5-1 P.C.B. .....................................................................................................
5. Appendix 5-1 P.C.B. Outdoor Unit Control P.C.B. : AER 425 SCL3E - AER 436 SCL3E - AER 448 SCL3E AER 425 SHL3E - AER 436 SHL3E - AER 448 SHL3E CN9 : CK.H CN15 (GRN) : DISCH CN8 CK.L CN7 (RED) : CHECK CN6 CN14 (RED) : C2 CN13 (BLK) : C1 (Used for Heatpump Type only) CN11 (YEL) : TEST CN1 : VCC JP11 JP8 JP7 JP2 JP1 CN10 S5 : Model code S1 : A. ADD LED POW D13 S4 : Capacity code CN52 CN53 CN51 S3 : R.C.
5. Appendix 5-1 P.C.B. Outdoor Unit Control P.C.B. : AER 425 SCLE - AER 425 SHLE CN9 : CK.H CN15 (GRN) : DISCH CN8 CK.L CN7 (RED) : CHECK CN6 CN14 (RED) : C2 CN13 (BLK) : C1 (Used for Heatpump Type only) CN11 (YEL) : TEST CN1 : VCC JP11 JP8 JP7 JP2 JP1 CN10 S5 : Model code S1 : A. ADD LED POW D13 S4 : Capacity code CN52 CN53 CN51 S3 : R.C. Address CN12 (WHT) : CT1 LED2 : Message lamp LED1 : Message lamp CN3 (BNR) CN2 (BLU) S2 (BLK) : R.C. Address F3 : Fuse 125V / 0.
5. Appendix 5-1 P.C.B. Indoor Unit Control P.C.B. (CR-X253GH) CN79 (RED) : HU1 CN77 (GRN) : LM CN85 (BLU) : DPH CN74 (WHT) : RN2 CN76 (BLK) : OP1 CN73 (BLK) : RN1 CN78 (BLU) : DP CN84 (WHT) : RN3 F1 : Fuse 250V / 5A CN81 (GRY) : T20 CN80 (RED) : 26H D80 (RED) : Power lamp CN75 (WHT) : VCC CN83 (WHT) : FMI JP1 (Jumper wire) : For sellecting the signal of T10.
• The specifications, designs, and information in this brochure are subject to change without notice.
