Gree U-MATCH Series Service Manual page 97

U-Match Series DC Inverter Service Manual

PU Charging circuit error
PU is displayed on
the wired controller
PU is displayed in
the mainboard 88
indicating lamp
Is the PFC wire
tightened or is the
sequence right?
Yes
No
Tighten the PFC
Replace the
wire or adjust the
mainboard
sequence
Work normally
 ee driving board chip error
ee is displayed
on the wired
controller
Yes
Is the
Yes
Tighten the
jumper
jumper
loose？
No
Replace the
mainboard
Work Normally
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