E9 to E28 NKR Service Manual.pdf - Industrial Air

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16.4.29 F99 (Output Over Current Detection) Malfunction Decision Conditions During operation of cooling and heating, when an output over-current (DC peak current value at IPM Prevention Control) is detected by checking the current that flows in the inverter DC peak sensing circuitry. Malfunction Caused Faulty outdoor unit PCB Faulty compressor Troubleshooting Checking the power transistor Never touch any live parts for at least 10 minutes after turning off the circuit breaker. If unavoidable necessary to touch a live part, make sure the power transistor’s supply voltage is below 50V using the tester. For the UVW, make measurement at the Faston terminal on the board of the relay connector. Tester’s negative terminal Power transistor (+) UVW Power transistor (-) UVW Tester’s positive terminal UVW Power transistor (+) UVW Power transistor (-) Normal resistance Several kΩ to several MΩ Abnormal resistance 0 or ∞ 138
17. Disassembly and Assembly Instructions WARNING High Voltage is generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding with repair work. Failure to heed this caution may result in electric shocks. 17.1 CS-E7NK CS-E9NK CS-E12NK CS-E15NK 17.1.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures 17.1.1.1 To remove front grille 17.1.1.2 To remove power electronic controller 139
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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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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
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12.3 Outdoor Unit 12.3.1 Install th
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4 Connecting cable between outdoor
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13.1.5 Automatic Operation This mo
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13.4 Airflow Direction There are t
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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
Page 109 and 110: 109
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 and 128: 16.4.18 H98 (Indoor High Pressure P
Page 129 and 130: 16.4.20 F11 (4-way valve Abnormalit
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: 16.4.28 F98 (Input Over Current Det
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
Page 183 and 184: CU-E12NKR INDOOR OUTDOOR TEMPERATUR
Page 185 and 186: CU-E24NKR INDOOR OUTDOOR TEMPERATUR
Page 187 and 188: 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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