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1 12 3 4 5 1-5 Refrigerant Flow Diagram Outdoor Units : AER 436 SCL3E AER 448 SCL3E High pressure switch Compressor HP P EC Cooling Cycle LP Heat exchanger Distributor Low pressure switch Accumulator Gas line service valve Liquid line service valve I - 70 O.D. ø19.05mm (3/4") O.D. ø9.52mm (3/8") Heat exchanger Liquid line nipple Gas line nipple Distributor Strainer Electronic ref.control valve 1. Specifications Indoor Units : 36, 48 Type P EC M Strainer 1550_C_S
1-5 Refrigerant Flow Diagram Outdoor Units : AER 425 SHLE AER 425 SHL3E Compressor Accumulator Accumulator High pressure switch P EC HP Heat exchanger Distributor Sub-heat exchanger Cooling Cycle Heating Cycle Muffler 4-way valve Gas line service valve Liquid line service valve I - 71 O.D. ø15.88mm (5/8") O.D. ø6.35mm (1/4") Indoor Unit : 25 Type Heat exchanger Liquid line nipple Gas line nipple Distributor Strainer Electronic ref.control valve 1. Specifications P EC M Strainer 1551_C_S 1 2 3 4 5
Page 1 and 2:
TECHNICAL DATA & SERVICE MANUAL ASR
Page 3 and 4:
WHO SHOULD USE THIS MANUAL This ser
Page 5 and 6:
Introduction: Read Me First! This m
Page 7 and 8:
1 12 3 4 5 1-1 Unit Specifications
Page 9 and 10:
1 12 3 4 5 1-1 Unit Specifications
Page 11 and 12: 1 12 3 4 5 1-1 Unit Specifications
Page 31 and 32: 1 12 3 4 5 1-2 Major Component Spec
Page 37 and 38: 1-2 Major Component Specifications
Page 47 and 48: 1-3 Other Component Specifications
Page 49 and 50: 1 12 3 4 5 1-3 Other Component Spec
Page 51 and 52: 1 12 3 4 5 1-3 Other Component Spec
Page 53 and 54: 1 12 3 4 5 1-4 Dimensional Data (A)
Page 55 and 56: 1 12 3 4 5 1-4 Dimensional Data (A)
Page 57 and 58: 1 12 3 4 5 1-4 Dimensional Data 11
Page 59 and 60: 1-4 Dimensional Data 340 735 (B) Ou
Page 61: 1-5 Refrigerant Flow Diagram Outdoo
Page 65 and 66: 1-7 Cooling Capacity Indoor Unit :
Page 77 and 78: ● Heating Capacity NOTE Comp. mot
Page 79 and 80: OCTAVE BAND SOUND PRESSURE LEVEL, d
Page 81 and 82: 1 12 3 4 5 1-8 Noise Criterion Curv
Page 83 and 84: 1-10 Air throw Distance Chart 4-Way
Page 85 and 86: 1-11 Installation Instructions Tubi
Page 87 and 88: 1-11 Installation Instructions Outd
Page 89 and 90: 1-11 Installation Instructions Sele
Page 91 and 92: 1-11 Installation Instructions ■
Page 93 and 94: 1-11 Installation Instructions ■
Page 95 and 96: 1-11 Installation Instructions Elec
Page 105 and 106: 2. Processes and functions 2. PROCE
Page 107 and 108: (B) Heating REMOTE CONTROL SENSOR (
Page 109 and 110: 2-3 Automatic Fan Speed (Indoor Uni
Page 111 and 112: 2-5 Freeze Prevention (Cooling) 2.
Page 113 and 114:
2-7 Overload Protection (Heating) T
Page 115 and 116:
2-9 Auto. Mode for Automatic Heatin
Page 117 and 118:
2-11 4-Way Valve, Solenoid Control
Page 119 and 120:
2-13 Electronic Expansion Valve II
Page 121 and 122:
2-16 Dehumidifying Operation II - 1
Page 123 and 124:
2-18 Controlled by Electronic Expan
Page 125 and 126:
3. ELECTRICAL DATA 3. Electrical da
Page 127 and 128:
3-1 Indoor Units 1 4-Way Air Discha
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3-1 Indoor Units 2 Ceiling Mounted
Page 131 and 132:
3-1 Indoor Units 6 Concealed Duct T
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3-2 Outdoor Units 1 AER 425 SCLE -
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3-2 Outdoor Units 2 AER 425 SCL3E -
Page 137 and 138:
3-2 Outdoor Units III - 19 3. Elect
Page 139 and 140:
1 12 3 4 5 4-1 Troubleshooting This
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1 12 3 4 5 RED WHT Inter-unit power
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1 12 3 4 5 (B) Heating b. Heating P
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1 12 3 4 5 Possible causes of troub
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1 12 3 4 5 IV - 10 4. Service proce
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Page 151 and 152:
Page 153 and 154:
1 12 3 4 5 11) Symptoms: LCD on the
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1 12 3 4 5 15) Symptom: LCD on the
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1 12 3 4 5 (6) Procedures When a Sp
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Page 161 and 162:
1 12 3 4 5 (C) Check the sensor tem
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1 12 3 4 5 This picture shows the s
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1 12 3 4 5 (F) Execute the auto. ad
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Page 169 and 170:
1 12 3 4 5 ( I ) Set the indoor uni
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Page 173 and 174:
1 12 3 4 5 4-2 Checking the Electri
Page 175 and 176:
1 12 3 4 5 (3) Checking the Protect
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Page 179 and 180:
1 12 3 4 5 (5) Sensor and Solenoid
Page 181 and 182:
1 12 3 4 5 Indoor Unit TH2 (E1), (R
Page 183 and 184:
1 12 3 4 5 Outdoor Units • AER 44
Page 185 and 186:
1 12 3 4 5 (7) P.C.B. Setting IV -
Page 187 and 188:
1 12 3 4 5 (9) Automatic Address Se
Page 189 and 190:
1 12 3 4 5 (12) Test Run Procedure
Page 191 and 192:
1 12 3 4 5 5-1 P.C.B. V-2 5. Append
Page 193 and 194:
1 12 3 4 5 5-1 P.C.B. Indoor Unit C
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