Lennox VRF VEC034N432U User Manual

DC Inverter Multi VRF System
28
Error Code
Content
Error Code
Content
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
Debugging:
Error Code
Content
Error Code
Content
U0
Preheat time of compressor is
insufficient
C4 Malfunction of lack of IDU

Lennox VRF VEC034N432U Specifications

General

Brand	Lennox
Model	VRF VEC034N432U
Category	Air Conditioner
Language	English