Troubleshooting Guide
Troubleshooting
CH05,
CH53
Display | Title | Cause of error | Check point & Normal condition | |
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| • Power input AC 220V. (Outdoor, Indoor) | |
05 |
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| • The connector for transmission is disconnected. | |
Communication |
| • The connecting wires are misconnected. | ||
/ | • Communication poorly | |||
• The GND1,2 is not connected at main GND. | ||||
53 | (Indoor → Outdoor) | |||
| • The communication line is shorted at GND. | |||
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| • Transmission circuit of outdoor PCB is abnormal. | |
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| • Transmission circuit of indoor PCB is abnormal. | |
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Check Point
1.Check the input power AC230V. (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 outdoor unit.
Service Manual 41