ACPro AUHD18ND3F1O - Description of Drive Malfunction

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ƶ.2 Description of Drive Malfunction
Main board dual 8 numeral tube Display Codes for Outdoor Unit of 18k~48k
Malfunction 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)