Power Supply Phase Sequence Malfunction; Communication Malfunction - Midea Aqua Tempo Super Series Technical & Service Manual

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

7) Power supply phase sequence malfunction

Power supply phase sequence
malfunction.
Phase sequence error.
Lack of phase.
Phase lack protector is broken.
PCB mistakes to alarm.
Inform the customer service
center.

8) Communication malfunction

Communication malfunction
No power input to unit or wired
controller.
Communicating wire malfunction.
Address repeat.
PCB mistakes to alarm.
The attachments of unit have
strong
interference.
Inform the customer service
center.
Yes
Yes
No
Yes
No
Yes
No
Yes
No
Yes
Yes
No
Yes
No
Yes
No
Yes
No
Yes
electromagnetic
No
Adjust connecting wire.
Check power supply.
Replace phase lack
protector.
Replace PCB.
Inspect power supply.
Inspect communicating
wire.
Adjust address.
Replace PCB.
Reduce electromagnetic
interference.
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MCAC-ATSM-201606