Outdoor
Debugging
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Malfunction of inlet temp
b6
sensor of gas-liquid separator
Malfunction of heat exchanger
b9
temperature sensor
Drive IPM module protection
P6
of compressor
Drive IPM high temperature
P8
protection of compressor
High-voltage protection of
PH
compressor's drive DC bus
bar
Low-voltage protection of
PL
compressor's drive DC bus
bar
Drive charging circuit
PF
malfunction of compressor
AC current protection of
PP
inverter compressor
Malfunction of drive
H7
temperature sensor of fan
Desynchronizing protection of
H9
inverter fan
Drive current detection circuit
HC
malfunction of fan
HE
Phase-lacking of inverter fan
HJ
Failure startup of inverter fan
E0
Malfunction of ODU (uniform)
Discharge low-temperature
E2
protection
High discharge temperature
E4
protection of compressor
F0
Main board of ODU is poor
Malfunction of low-pressure
F3
sensor
Over-current protection of
J1
compressor 1
Malfunction of defrosting
b2
temperature sensor 1
Malfunction of gas
b5
temperature sensor of
sub-cooler
Driving board of compressor
P1
operates abnormally (uniform)
Reset protection of driving
P3
module of compressor
Over-current protection of
P5
inverter compressor
Driving board of fan operates
H1
abnormally (uniform)
Reset protection of driving
H3
module of fan
Over-current protection of
H5
inverter fan
Preheat time of compressor is
U0
insufficient
U4
Refrigerant-lacking protection
Alarm because valve is
U6
abnormal
Malfunction of pipe-line for
U9
ODU
DC Inverter Multi VRF System
Malfunction of outlet temp sensor
b7
of gas-liquid separator
bH
Clock of system is abnormal
Malfunction of drive temperature
P7
sensor of compressor
Desynchronizing protection of
P9
inverter compressor
Drive current detection circuit
PC
malfunction of compressor
Phase-lacking of inverter
PE
compressor
Failure startup of inverter
PJ
compressor
Drive IPM module protection of
H6
fan
Drive IPM high temperature
H8
protection of fan
High-voltage protection of fan's
HH
drive DC bus bar
Low-voltage protection of fan's
HL
drive DC bus bar
Drive charging circuit malfunction
HF
of fan
AC current protection of inverter
HP
fan
E1
High-pressure protection
E3
Low-pressure protection
High discharge temperature
E5
protection of compressor 1
Malfunction of high-pressure
F1
sensor
Malfunction of discharge
F5
temperature sensor of
compressor 1
Malfunction of outdoor ambient
b1
temperature sensor
Malfunction of liquid temperature
b4
sensor of sub-cooler
malfunction of driving board of
P0
compressor (uniform)
Voltage protection of driving
P2
board power of compressor
(uniform)
Drive PFC protection of
P4
compressor
Malfunction of driving board of fan
H0
(uniform)
Voltage protection of driving
H2
board power of fan (uniform)
H4
Drive PFC protection of fan
Wrong setting of ODU's capacity
U2
code/jumper cap
Wrong address for driving board
U5
of compressor
U8
Short-circuit malfunction of IDU
UC
Setting of main IDU is successful
32