A/A DC INVERTER U-MATCH AIR CONDITIONERS MAINTENANCE
129
DC Bus High Voltage Protection
Wired
Controller
Display E5
DC Bus High Voltage
Protection
PH
Monitor
Dispay
Main Board 88
Indicating Lamp
Record and report the
actual condition
If the power supply voltage
is too high, please cut off
the power supply; otherwise
the unit would be damaged.
If the input power supply
voltage is larger than
475V?
Yes
No
Replace the main board
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