DC Inverter U-match Series Cassette Type Unit
54
Error
code
Error
Error
code
Error
CJ
IDU jumper cap error
PA
ODU AC current protection
C6
Discharge temperature sensor
error
PE
Temperature drift protection
C7
Condenser meso-temperature
sensor error
PF
Driveboard ambient temperature
sensor error
C8
Compressor dial code or
jumper cap abnormal
PH
Bus high-voltage protection
C9
Compressor driver memory
chip failure
PL
Bus low-voltage protection
CE
Wired controller temperature
sensor error
PP
Input AC voltage error
CP
Multi-main wired controller
failure
PU
Capacitor charging failure
dc
Compressor suction
temperature sensor error
q0
DC indoor fan driver bus
low-voltage protection
dH
Wired controller circuit board
abnormal
q1
DC indoor fan driver bus
high-voltage protection
dJ
AC sequence protection (phase
loss or anti-phase protection)
q2
DC indoor fan AC current
protection
E0
Indoor fan error
q3
DC indoor fan driver IPM module
protection
E1
Compressor high pressure
protection
q4
DC indoor fan driver PFC
protection
E2
Indoor anti-freeze protection
q5
DC indoor fan startup failure
E3
Refrigerant lack protection or
compressor low pressure
protection
q6
DC indoor fan Phase-loss
protection
E4
Compressor air discharge
high-temperature protection
q7
DC indoor fan driver reset
protection
E6
ODU and IDU communication
error
q8
DC indoor fan over-current
protection
E7
Mode conflict
q9
DC indoor fan power protection
E9
Water-full protection
qA
DC indoor fan driver current
detection circuit error
EE
Memory chip reading and
writing failure
qb
DC indoor fan out-of-step
protection
EL
Emergency stop (fire alarm)
qC
Master control and DC indoor fan
driver communication error