Johnson Controls R SERIES Installation And Maintenance Manual page 52

6.2 Description of Drive Malfunction
Main board dual 8 numeral tube Display Codes for Outdoor Unit of 18k~48k
Malfunction Item
DC busbar over-voltage protection
IPM or PFC over-temperature protection
Current sense circuit error
IPM or PFC temperature sensor error
Compressor current protection
DC busbar under-voltage protection
Compressor startup failure
Drive module reset
Compressor motor desynchronizing
Phase loss
Drive-to-main-control communication error
IPM protection
Compressor overload protection
AC current protection (input side)
Charging circuit error
PFC protection
DC fan error
Input AC voltage abnormality
Driving board memory chip error
Outdoor unit display of dual 8 numeral
Indoor Unit Display
PH
P8
Pc
P7
P5
PL
Lc
P0
H7
Ld
P6
H5
H3
PA
PU
HC (48k only)
H6
PP
ee
44
tube
PH
P8
Pc
P7
P5
PL
Lc
P0
H7
Ld
P6
H5
H3
PA
PU
HC (48k only)
H6
PP
ee