Part 4

Trouble Shooting

 

 

 

4) Troubleshooting CH21, CH22

 

 

 

 

 

 

Error

Title

Cause of error

Check point & Normal condition

code

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

check if the compressor is locked or operating.

 

 

 

Compressor output

Check the compressor insulation and motor wire

21

DC_Peak

resistance.

current over.(30A)

 

 

 

Check if the outdoor fan is locked or operating.

 

 

 

 

 

 

 

 

 

 

Check the IPM short.

 

 

 

 

 

 

 

 

 

 

 

Check AC input voltage.

 

 

 

 

 

Check if the outdoor fan is locked or operating.

22

C/T

Initial current error

Check input current.

Check the C01N DC voltage.

Internal circuit

 

 

 

 

 

 

 

 

(From where the electricity is entering and Before

 

 

 

 

 

 

 

 

 

 

the product operates, Normality Vdc value is

 

 

 

 

 

2.5V±0.2V)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

V

Check Point

1.Check the power source.

2.Check that the indoor fan is operating correctly.

3.Check the current.

4.Check the install conditions.

5.Check the internal circuit.

- 58 -

Only for training and service purposes

Page 58
Image 58
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