Troubleshooting
Page 98
5.8 Phase sequence error diagnosis and solution
Description: Outdoor PCB detects the wrong phase sequence of 3-phase power supply.
Recommended parts to prepare:
• Wiring mistake of 3-phase power supply
• Faulty outdoor PCB
Troubleshooting and repair:
Phase sequence error
Phase sequence error
If m a lfu n c tio n is s till n o t s o lv e d ?
If m a lfu n c tio n is s till n o t s o lv e d ?
Change the order of tw o of the
w ires to pow er supply.
Change the order of tw o of the
w ires to pow er supply.
YES
Replace the outdoor m ain PC B
Replace the outdoor m ain PC B
Sw itch on the unit again
Sw itch on the unit again
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