LG General Wall Mounted-Inverter Type Svc Manual [Page 57]

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Troubleshooting Ch05, Ch53 - Lg General Wall Mounted-Inverter Type Svc Manual General wall mounted-inverter type Hide thumbs 1 Table Of Contents 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67

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2) Troubleshooting CH05, CH53

Error Title code 05 Communication / (Indoor ¡ Outdoor) 53 Cause of error • Communication poorly Check Point 1. Check the input power AC 208~230V. (Outdoor, Indoor unit) 2. Check the communication wires are correctly connected. ¡ Adjust the connection of wire ¡ Confirm the wire of "Live", "Neutral" 3. Check the resistance between communication line and GND. (Normal : Over 2MΩ) 4. Check the connector for communication is correctly connected. 5. Check the connection of GND1, GND2, and main GND. 6. If one indoor unit is operated normally, outdoor PCB is no problem. ¡ Check the another indoor unit. * CH05 is displayed at indoor unit, CH53 is displayed at out- door unit. Part 4 Trouble Shooting Check point & Normal condition • Power input AC 208~230V. (Outdoor, Indoor) • The connector for transmission is disconnected. • The connecting wires are misconnected. • The GND1,2 is not connected at main GND. • The communication line is shorted at GND. • Transmission circuit of outdoor PCB is abnormal. • Transmission circuit of indoor PCB is abnormal. Service Manual 57 Table of Contents Previous Page Next Page

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Part 4 Trouble Shooting
Error Indicator
Self-Diagnosis Function
Troubleshooting Ch05, Ch53
Troubleshooting Ch26, Ch27
Troubleshooting Ch32, Ch33, Ch40
Troubleshooting Ch61, Ch62

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Troubleshooting

Cycle Troubleshooting Guide 39
Electric Parts Troubleshooting Guide 41
part 4 trouble shooting 42
Troubleshooting CH05, CH53 57
Troubleshooting CH26, CH27 62
Troubleshooting CH32, CH33, CH40 63

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