Phase Sequence Error Diagnosis And Solution - York YEFE BZTM-MOW1 Series Service Manual

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:
 Page 98 
Phase sequence error
Phase sequence error
C hange the order of tw o of the
C hange the order of tw o of the
w i res to pow er suppl y.
w i res to pow er suppl y.
Sw i tch on the uni t agai n
Sw i tch on the uni t agai n
I f m al functi on i s sti l l not sol ved?
I f m al functi on i s sti l l not sol ved?
Y ES
Repl ace the outdoor m ai n PC B
Repl ace the outdoor m ai n PC B