Midea Advantage Series User Manual

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7.4.1.3 Zero-crossing signal detection error diagnosis and solution.
Malfunction conditions
When PCB does not receive zero crossing signal feedback for
4 minutes or the zero crossing signal time interval is abnormal.
Potential causes
● Connection mistake
● Faulty PCB
Trouble shooting:
Check if the connections and
power supply is normal?
Correct the connections. Turn on the
unit when the power supply is good.
No
Yes
Indoor main PCB is
defective. Replace indoor
main PCB.
PIC 4: Check point button, press 1 time for check
how many indoor units are connected.

Midea Advantage Series Specifications

General

Brand	Midea
Model	Advantage Series
Category	Heat Pump
Language	English