E9 to E28 NKR Service Manual.pdf - Industrial Air

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16.4.19 H99 (Indoor Freeze Prevention Protection: Cooling or Soft Dry) Error Code will not display (no Timer LED blinking) but store in EEPROM Malfunction Decision Conditions Freeze prevention control takes place (when indoor pipe temperature is lower than 2°C) Malfunction Caused Air short circuit at indoor unit Clogged indoor unit air filter Dust accumulation on the indoor unit heat exchanger 2/3 way valve closed Faulty indoor unit fan motor Refrigerant shortage (refrigerant leakage) Clogged expansion valve or strainer Faulty indoor pipe temperature sensor Faulty indoor unit PCB Troubleshooting 128
16.4.20 F11 (4-way valve Abnormality) Malfunction Decision Conditions When heating operation, when indoor pipe temperature is below 10°C When cooling operation, when indoor pipe temperature is above 45°C Malfunction Caused Connector in poor contact Faulty sensor Faulty outdoor unit PCB 4-way valve defective Troubleshooting 129
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Order No: PAPAMY1207090CE Indoor Un
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1. Safety Precautions Read the fol
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2. Specification Cooling Heating Mo
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Drain Hose Indoor Heat Exchanger Ou
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Indoor Fan Outdoor Fan Speed Type C
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Cooling Heating Model Indoor CS-E12
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Indoor Fan Outdoor Fan Speed Indoor
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Page 21 and 22:
Indoor Fan Outdoor Fan Speed Indoor
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Page 27 and 28:
Indoor Fan Outdoor Fan Speed Type C
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3. Features Inverter Technology o
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5. Dimensions 5.1 Indoor Unit 5.1.1
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5.2 Outdoor Unit 5.2.1 CU-E7NKR CU-
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6. Refrigeration Cycle Diagram 6.1
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6.3 CU-E15NKR CU-E18NKR 37
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6.5 CU-E24NKR CU-E28NKR 39
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7.2 CU-E15NKR CU-E18NKR CU-E21NKR 4
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7.4 CU-E28NKR 43
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8.2.3 CU-E21NKR 47
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8.2.5 CU-E28NKR 49
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9.2.3 CU-E21NKR 53
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9.2.5 CU-E28NKR 55
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10.1.3 Receiver Printed Circuit Boa
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10.2 Outdoor Unit 10.2.1 CU-E7NKR C
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10.2.3 CU-E21NKR CU-E24NKR 61
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10.2.5 Noise Filter Printed Board (
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11.2 Indoor Unit 11.2.1 How to Fix
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11.2.4 Connect the Cable to the Ind
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11.3 Outdoor Unit 11.3.1 Install th
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6 Secure the power supply cord and
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12.2 Indoor Unit 12.2.1 How to Fix
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12.2.4 Connect the Cable to the Ind
Page 77 and 78: 12.3 Outdoor Unit 12.3.1 Install th
Page 79 and 80: 4 Connecting cable between outdoor
Page 81 and 82: 13.1.5 Automatic Operation This mo
Page 83 and 84: 13.4 Airflow Direction There are t
Page 85 and 86: Control contents o Fan speed manual
Page 87 and 88: Remote Control Receiving Sound o No
Page 89 and 90: ECO NAVI stop conditions: o When EC
Page 91 and 92: 13.13.1.7 Setting Position Judgment
Page 93 and 94: 13.13.2.2 Infrared Sensor Abnormali
Page 95 and 96: 13.13.3.3 Judge Ambient Condition
Page 97 and 98: 14. Protection Control 14.1 Protect
Page 99 and 100: 14.1.7 Low Frequency Protection Con
Page 101 and 102: 14.3.4 Low Temperature Compressor O
Page 103 and 104: 4 REMOTE CONTROL RECEIVING SOUND OF
Page 105 and 106: 16. Troubleshooting Guide 16.1 Refr
Page 107 and 108: 16.2 Breakdown Self Diagnosis Funct
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Page 111 and 112: 16.4.2 H12 (Indoor/Outdoor Capacity
Page 113 and 114: 16.4.4 H15 (Compressor Temperature
Page 115 and 116: 16.4.6 H19 (Indoor Fan Motor - DC M
Page 117 and 118: 16.4.8 H25 (e-ion Air Purifying Sys
Page 119 and 120: 16.4.10 H28 (Outdoor Pipe Temperatu
Page 121 and 122: 16.4.12 H32 (Outdoor Heat Exchanger
Page 123 and 124: 16.4.14 H34 (Outdoor Heat Sink Temp
Page 125 and 126: 16.4.16 H37 (Outdoor Liquid Pipe Te
Page 127: 16.4.18 H98 (Indoor High Pressure P
Page 131 and 132: 16.4.22 F90 (Power Factor Correctio
Page 133 and 134: 16.4.24 F93 (Compressor Rotation Fa
Page 135 and 136: 16.4.26 F96 (IPM Overheating) Malfu
Page 137 and 138: 16.4.28 F98 (Input Over Current Det
Page 139 and 140: 17. Disassembly and Assembly Instru
Page 141 and 142: 17.1.1.4 To remove control board 17
Page 143 and 144: 17.2 CS-E18NK CS-E21NK CS-E24NK CS-
Page 145 and 146: 17.2.1.4 To remove discharge grille
Page 147 and 148: 17.3 Outdoor Electronic Controller
Page 149 and 150: 17.3.3 CU-E24NKR 1 Remove the 4 scr
Page 151 and 152: Piping Length Characteristic [Condi
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Piping Length Characteristic [Condi
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Piping Length Characteristic [Condi
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CU-E12NKR INDOOR OUTDOOR TEMPERATUR
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CU-E24NKR INDOOR OUTDOOR TEMPERATUR
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REF NO. PART NAME & DESCRIPTION QTY
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REF NO. PART NAME & DESCRIPTION QTY
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REF. NO. DESCRIPTION & NAME QTY. CU
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19.2.3 CU-E21NKR Note The above exp
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68 SHOCK ABSORBER (LEFT) 1 CWG71288
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19.2.5 CU-E28NKR 201
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Note The above exploded view is for
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70 SHOCK ABSORBER (LEFT) 1 CWG71285
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E9 to E28 NKR Service Manual.pdf - Industrial Air

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