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Part 4 Trouble Shooting
4) Troubleshooting CH21, CH22
V
21
22
DC_Peak
C/T
Internal circuit
Compressor output
current over.(30A )
Initial current error
check if the compressor is locked or operating.
Check the compressor insulation and motor wire
resistance.
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.
Check input current.
Check the C01N DC voltage.
(From where the electricity is entering and Before
the product operates, Normality Vdc value is
2.5V±0.2V)
Error
code
Title Cause of error Check point & Normal condition
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.