Lennox VEP034N432US User Manual page 39

DC Inverter Multi VRF System
Outdoor:
Error Code
E0 Malfunction of ODU (uniform)
E1 High-pressure protection
E2 Discharge low-temperature protection
E3 Low-pressure protection
High discharge temperature protection of
E4
compressor
High discharge temperature protection of
E5
compressor 1
Drop protection of discharge temperature
EC
sensor of compressor 1
J1 Over-current protection of compressor 1
J7 Gas-mixing protection of 4-way valve
J8 High pressure ratio protection of system
J9 Low pressure ratio protection of system
JA Protection because of abnormal pressure
JL Protection because high pressure is too low
malfunction of driving board of compressor
P0
(uniform)
Driving board of compressor operates
P1
abnormally (uniform)
Voltage protection of driving board power of
P2
compressor (uniform)
Reset protection of driving module of
P3
compressor
P4 Drive PFC protection of compressor
Over-current protection of inverter
P5
compressor
P6 Drive IPM module protection of compressor
Malfunction of drive temperature sensor of
P7
compressor
Drive IPM high temperature protection of
P8
compressor
Desynchronizing protection of inverter
P9
compressor
High-voltage protection of compressor's
PH
drive DC bus bar
Malfunction of current detection circuit drive
PC
of compressor
Low voltage protection for DC bus bar of
PL
drive of compressor
PE Phase-lacking of inverter compressor
Malfunction of charging loop of driven of
PF
compressor
PJ Failure startup of inverter compressor
AC current protection of inverter
PP
compressor
Low temperature protection for drive
Ed
module
Content
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Error Code
F0 Main board of ODU is poor
F1 Malfunction of high-pressure sensor
F3 Malfunction of low-pressure sensor
Malfunction of discharge temperature
F5
sensor of compressor 1
FP Malfunction of DC motor
Malfunction of outdoor ambient
b1
temperature sensor
Malfunction of defrosting temperature
b2
sensor 1
Malfunction of liquid temperature sensor
b4
of sub-cooler
Malfunction of gas temperature sensor of
b5
sub-cooler
Malfunction of inlet tube temperature
b6
sensor of vapor liquid separator
Malfunction of exit tube temperature
b7
sensor of vapor liquid separator
Malfunction of gas temperature sensor of
b9
heat exchanger
bH Clock of system is abnormal
Malfunction of driving board of fan
H0
(uniform)
Driving board of fan operates abnormally
H1
(uniform)
Voltage protection of driving board power
H2
of fan (uniform)
H3 Reset protection of driving module of fan
H4 Drive PFC protection of fan
H5 Over-current protection of inverter fan
H6 Drive IPM module protection of fan
Malfunction of drive temperature sensor
H7
of fan
Drive IPM high temperature protection of
H8
fan
Desynchronizing protection of inverter
H9
fan
High-voltage protection of fan's drive DC
HH
bus bar
Malfunction of current detection circuit of
HC
fan drive
Low voltage protection of bus bar of fan
HL
drive
HE Phase-lacking of inverter fan
HF Malfunction of charging loop of fan drive
HJ Failure startup of inverter fan
HP AC current protection of inverter fan
Content