Part 4

Trouble Shooting

 

 

2) Troubleshooting CH05, CH53

 

 

 

 

 

Error

Title

Cause of error

Check point & Normal condition

code

 

 

 

 

 

 

 

 

 

 

• Power input AC 208~230V. (Outdoor, Indoor)

05

 

 

• 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.

 

 

 

 

 

• Transmission circuit of outdoor PCB is abnormal.

 

 

 

• Transmission circuit of indoor PCB is abnormal.

 

 

 

 

Check Point

1. Check the input power AC 208~230V. (Outdoor, Indoor unit)

2. Check that the communication wires are correctly connected.

Adjust the connection of wire

Confirm the wire is either “Live”, “Neutral”

3. Check the resistance between communication line and GND. (Normal : Over 2M)

4. Check that the communication cable is correctly connected.

5.Check the connection of GND1, GND2, and main GND.

6.Check to see if one of the indoor units in operating properly and the outdoor PCB is operating correctly.

Check any other indoor units

* CH05 is displayed at indoor unit, CH53 is displayed at out- door unit.

- 56 -

Only for training and service purposes

Page 56
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