DC Inverter Multi VRF System
29
Error Code
Content
Error Code
Content
d6
Malfunction of exit-tube temperature
sensor
d7
Malfunction of humidity sensor
d9
Malfunction of jumper cap
dA
Web address of IDU is abnormal
dH
PCB of wired controller is abnormal
dC
Abnormal setting for capacity button
dL
Malfunction of air-outlet temperature
sensor(Fresh air unit)
dE
Malfunction of indoor CO
2
sensor (fresh air
unit)
FP
Malfunction of DC motor
J7
Gas-mixing protection of 4-way valve
J8
High pressure ratio protection of system
J9
Low pressure ratio protection of system
JA
Protection due to abnormal pressure
JL
High-pressure protection
b6
Malfunction of inlet temp sensor of
gas-liquid separator
b7
Malfunction of outlet temp sensor of
gas-liquid separator
b9
Malfunction of heat exchanger
temperature sensor
bH
Clock of system is abnormal
P6
Drive IPM module protection of
compressor
P7
Malfunction of drive temperature sensor of
compressor
P8
Drive IPM high temperature protection of
compressor
P9
Desynchronizing protection of inverter
compressor
PH
High-voltage protection of compressor’s
drive DC bus bar
PC
Drive current detection circuit malfunction of
compressor
PL
Low-voltage protection of compressor’s
drive DC bus bar
PE
Phase-lacking of inverter compressor
PF
Drive charging circuit malfunction of
compressor
PJ
Failure startup of inverter compressor
PP
AC current protection of inverter
compressor
H6
Drive IPM module protection of fan
H7
Malfunction of drive temperature sensor
of fan
H8
Drive IPM high temperature protection of fan
H9
Desynchronizing protection of inverter fan
HH
High-voltage protection of fan’s drive DC bus
bar
HC
Drive current detection circuit malfunction
of fan
HL
Low-voltage protection of fan’s drive DC bus
bar
HE
Phase-lacking of inverter fan
HF
Drive charging circuit malfunction of fan
HJ
Failure startup of inverter fan
HP
AC current protection of inverter fan
Outdoor:
Error Code
Content
Error Code
Content
E0
Malfunction of ODU (uniform)
E1
High-pressure protection
E2
Discharge low-temperature protection
E3
Low-pressure protection
E4
High discharge temperature protection of
compressor
E5
High discharge temperature protection of
compressor 1
F0
Main board of ODU is poor
F1
Malfunction of high-pressure sensor
F3
Malfunction of low-pressure sensor
F5
Malfunction of discharge temperature sensor
of compressor 1
J1
Over-current protection of compressor 1
b1
Malfunction of outdoor ambient temperature
sensor
b2
Malfunction of defrosting temperature
sensor 1
b4
Malfunction of liquid temperature sensor of
sub-cooler
b5
Malfunction of gas temperature sensor of
sub-cooler
P0
malfunction of driving board of compressor
(uniform)
P1
Driving board of compressor operates
abnormally (uniform)
P2
Voltage protection of driving board power of
compressor (uniform)
P3
Reset protection of driving module of
compressor
P4
Drive PFC protection of compressor
P5
Over-current protection of inverter
compressor
H0
Malfunction of driving board of fan (uniform)