Gree U-MATCH B Series, Manual

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U-MATCH SERIES DC INVERTER AIR CONDITIONERS SERVICE MANUAL
75
No.
Error
code
Malfunction
name
Origin of
malfunction
signal
Control description
35 P6
Communication
malfunction
between main
control and drive
Communicatio
n between
main control
board and
drive board
If the outdoor main control board does not receive data from drive
board, communication malfunction between main control and drive
will be reported. This malfunction can be eliminated automatically.
47 EE
Malfunction of
outdoor main
control memory
chip
Outdoor main
control board
If the memory chip of outdoor main control board is broken, the
unit cannot be started. The unit cannot be recovered
automatically. If the malfunction cannot be eliminated after
switching off the unit and then energizing the unit for several times,
please replace the outdoor main control board.
1.2 Description of Drive Malfunction
Main board dual 8 numeral tube Display Codes for Outdoor Unit of 09~48k
Malfunction Item Indoor Unit Display
Outdoor unit display of dual 8
numeral tube
DC busbar over-voltage protection PH PH
IPM or PFC over-temperature protection P8 P8
Current sense circuit error Pc Pc
IPM or PFC temperature sensor error P7 P7
Compressor current protection P5 P5
DC busbar under-voltage protection PL PL
Compressor startup failure Lc Lc
Drive module reset P0 P0
Compressor motor desynchronizing H7 H7
Phase loss Ld Ld
Drive-to-main-control communication error P6 P6
IPM protection H5 H5
Compressor overload protection H3 H3
AC current protection (input side) PA PA
Charging circuit error PU PU
PFC protection Hc(48k only) Hc(48k only)
DC fan error H6 H6
Input AC voltage abnormality PP PP
Driving board memory chip error ee(18-36k) ee(18-36k)