Troubleshooting - Carrier 38GJt Owner's Manual & Installation Instructions

7 Troubleshooting

The error code displays on the wired controller and the main board of the outdoor unit
Table 12 details the meaning of each error.
Malfunction
Compressor runs
Defrost
Anti-freezing protection
IPM protection
AC over-current protection
Over-burden protection
Compressor exhaust high temperature protection
Compressor overload protection
Power protection
EEPROM reads and write protection
Low PN voltage protection
Over voltage protection for PN
PFC protection
PFC module temperature protection
Low pressure protection
High pressure protection
Limit/decline frequency(electric current)
Frequency limit exhaust
Frequency limit Over-burden
Outdoor ambient sensor malfunction
Outdoor tube sensor malfunction
Exhaust sensor malfunction
Attain the temperature of switch on
Frequency limit(power)
Outdoor fan malfunction
Frequency limit(PFC module temperature)
PFC module sensor malfunction
Liquid pipe temperature sensor malfunction of A
Gas pipe temperature sensor malfunction of A
Liquid pipe temperature sensor malfunction of B
Gas pipe temperature sensor malfunction of B
Liquid pipe temperature sensor malfunction of C
Gas pipe temperature sensor malfunction of C
Liquid pipe temperature sensor malfunction of D
Gas pipe temperature sensor malfunction of D
Liquid pipe temperature sensor malfunction of E
Gas pipe temperature sensor malfunction of E
Exit of the condenser tube sensor malfunction
Correspondence is normal
Communication failure between indoor unit and
outdoor unit
Table 12
The indicator display
Yellow light Red light
Flash once
Flash twice
Flash 3 times
Flash 4 times
Flash 5 times
Flash 6 times
Flash 7 times
Flash 8 times
Flash 9 times
Flash 11 times
Flash 12 times
Flash 13 times
Flash 14 times
Flash 15 times
Flash 17 times
Flash 18 times
Flash 1 times
Flash 2 times
Flash 3 times
Flash 6 times
Flash 5 times
Flash 7 times
Flash 8 times
Flash 13 times
Flash 14 times
Flash 15 times
Flash 16 times
Flash 17 times
Flash 18 times
Flash 19 times
Flash 20 times
Flash 21 times
Flash 22 times
Flash 23 times
Flash 24 times
Flash 25 times
Flash 26 times
Flash 27 times
20
Green light
Flash n times n=indoor
unit number
Often bright
indoor unit all
Communication failure