Troubleshooting Guide
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n Error diagnosis and countermeasure flow chart
1. Defective high pressure switch
2. Defective fan of indoor unit or outdoor unit
3. Check valve of compressor clogged
4. Pipe distortion due to the pipe damage
5. Refrigerant overcharge
6. Defective LEV at the indoor or outdoor unit .
7. Covering or clogging(Outdoor covering dur-
ing the cooling mode /Indoor unit filter clog-
ging during the heating mode)
8. SVC valve clogging
9. Defective outdoor PCB
Error
No.
Error Type Error Point Main Reasons
Compressor off due to the
high pressure switch in
outdoor unit
Excessive rise of discharge
pressure in outdoor com-
pressor
24*
Master
241
Slave1
242
Slave2
243
Slave3
244