Lennox VEP034N432US - Outdoor Unit Error Codes

DC Inverter Multi VRF System
35
Outdoor:
Error Code
Content
Error Code
Content
E0
Malfunction of ODU (uniform)
F0
Main board of ODU is poor
E1
High-pressure protection
F1
Malfunction of high-pressure sensor
E2
Discharge low-temperature protection
F3
Malfunction of low-pressure sensor
E3 Low-pressure protection F5
Malfunction of discharge temperature
sensor of compressor 1
E4
High discharge temperature protection of
compressor
FP Malfunction of DC motor
E5
High discharge temperature protection of
compressor 1
b1
Malfunction of outdoor ambient
temperature sensor
EC
Drop protection of discharge temperature
sensor of compressor 1
b2
Malfunction of defrosting temperature
sensor 1
J1 Over-current protection of compressor 1 b4
Malfunction of liquid temperature sensor
of sub-cooler
J7 Gas-mixing protection of 4-way valve b5
Malfunction of gas temperature sensor of
sub-cooler
J8 High pressure ratio protection of system b6
Malfunction of inlet tube temperature
sensor of vapor liquid separator
J9 Low pressure ratio protection of system b7
Malfunction of exit tube temperature
sensor of vapor liquid separator
JA Protection because of abnormal pressure b9
Malfunction of gas temperature sensor of
heat exchanger
JL
Protection because high pressure is too low
bH
Clock of system is abnormal
P0
malfunction of driving board of compressor
(uniform)
H0
Malfunction of driving board of fan
(uniform)
P1
Driving board of compressor operates
abnormally (uniform)
H1
Driving board of fan operates abnormally
(uniform)
P2
Voltage protection of driving board power of
compressor (uniform)
H2
Voltage protection of driving board power
of fan (uniform)
P3
Reset protection of driving module of
compressor
H3 Reset protection of driving module of fan
P4
Drive PFC protection of compressor
H4
Drive PFC protection of fan
P5
Over-current protection of inverter
compressor
H5 Over-current protection of inverter fan
P6
Drive IPM module protection of compressor
H6
Drive IPM module protection of fan
P7
Malfunction of drive temperature sensor of
compressor
H7
Malfunction of drive temperature sensor
of fan
P8
Drive IPM high temperature protection of
compressor
H8
Drive IPM high temperature protection of
fan
P9
Desynchronizing protection of inverter
compressor
H9
Desynchronizing protection of inverter
fan
PH
High-voltage protection of compressor’s
drive DC bus bar
HH
High-voltage protection of fan’s drive DC
bus bar
PC
Malfunction of current detection circuit drive
of compressor
HC
Malfunction of current detection circuit of
fan drive
PL
Low voltage protection for DC bus bar of
drive of compressor
HL
Low voltage protection of bus bar of fan
drive
PE
Phase-lacking of inverter compressor
HE
Phase-lacking of inverter fan
PF
Malfunction of charging loop of driven of
compressor
HF Malfunction of charging loop of fan drive
PJ
Failure startup of inverter compressor
HJ
Failure startup of inverter fan
PP
AC current protection of inverter
compressor
HP AC current protection of inverter fan
Ed
Low temperature protection for drive
module