GREE ELECTRIC GUHD09NK3CO Service Manual page 108

U-Match Series DC
Inverter Service Manual
Table 4 Main board dual 8 numeral tube Display Codes for Outdoor Unit
Note:This table except GUHD09NK3CO/GUHD12NK3CO
DC busbar overvoltage protection
PFC or IPM temperature too high
Current sensor malfunction
PFC or IPM temperature sensor error
Compressor current protection
Low DC bus voltage protection
Compressor startup failure
PFC abnormality
Compressor clogged
Drive resetting
The compressor motor in loss of synchronization
Missing phase, Speed discard
Malfunction from driving part to main-control communication
IPM module protection
Compressor over speed
Sensor connection protection
Temperature drift protection
AC contactor protection
High-pressure protection
Low-pressure protection
Exhaust protection
Compressor overload protection
Communication malfunction (among indoor unit, outdoor unit and
wired controller)
Outdoor ambient temperature sensor malfunction
Coil pipe intermediate temperature sensor malfunction of outdoor
unit
Exhaust temperature sensor malfunction
Defrosting (non-malfunction)
Oil return (non-malfunction)
Mismatch of indoor unit model
AC current protection (input side)
Driver board environment temperature sensor malfunction
AC input voltage abnormality *
DC fan error
105
Malfunction Item
*
Outdoor unit display of dual 8
numeral tube
PH
P8
Pc
P7
P5
PL
Lc
Hc
LE
P0
H7
Ld
P6
H5
LF
Pd
PE
P9
E1
E3
E4
H3
E6
F3
F2
F4
08
09
LP
PA
PF
PP
PU
H6
Indoor Unit Display
E5
E5
E5
E5
E5
E5
E5
E5
E5
E5
E5
E5
E5
E5
E5
E5
E5
E5
E1
E3
E4
E5
E6
F3
F2
F4
defrost
no display
no display
E5
E5
E5
E5
E5