Gree U-MATCH Series Service Manual page 95

U-Match Series DC Inverter Service Manual
 P8 IPM or PFC over-temperature protection
 PH DC busbar over-voltage protection
 PL DC busbar under-voltage protection
P8 is displayed on
the wired controller
P8 is displayed in the
mainboard 88
Indicating lamp
Yes
IPM or PFC module
of mainboard
Replace the
mainboard
Work normally
PH or PL is displayed on
the wired controller
PH or PL is displayed in
the mainboard 88
indicating lamp
Is input voltage
ranged from 185VAC
Yes to 264VAC?
Replace the
mainboard.Does
it work normally?
No
Replace the
compressor
Is the
No
tightened？
Tighten the IPM
or PFC module
Yes
Please cut off the
Work
power and notify the
normally
power company.
92
No