Lennox VRF VEC034N432U User Manual

DC Inverter Multi VRF System
29
Error Code
Content
Error Code
Content
U2
Wrong setting of ODU’s capacity
code/jumper cap
C5
Alarm because project code of IDU is
inconsistent
U4
Refrigerant-lacking protection
C8
Emergency status of compressor
U5
Wrong address for driving board of
compressor
C9 Emergency status of fan
U6
Alarm because valve is abnormal
CH
Rated capacity is too high
U8
Malfunction of pipeline for IDU
CC
Malfunction of lack of main control unit
U9
Malfunction of pipeline for ODU
CL
Rated capacity is too low
UC Setting of main IDU is successful CF
Malfunction of multiple main control
units
UL Wrong button-dial CJ
Address DIP switch code of system is
shocking
UE
Charging of refrigerant is invalid
CP
Malfunction of multiple wired controller
C0
Communication malfunction between
IDU, ODU and IDU’s wired controller
CU
Communication malfunction between
IDU and the receiving lamp plate
C2
Communication malfunction between
main control and inverter compressor
driver
Cb Overflow distribution of IP address
C3
Communication malfunction between
main control and inverter fan driver
Status:
Error Code
Content
Error Code
Content
A0 Unit waiting for debugging AP
Debugging confirmation when starting
up the unit
A1
Inquiry of compressor operation
parameters
AU Long-distance emergency stop
A2
Refrigerant recovery operation of
after-sales
Ab Emergency stop of operation
A3
Defrosting
Ad
Limit operation
A4
Oil-return
n0
SE operation setting of system
A6
Heat pump function setting
n1
Setting of defrosting cycle K1
A7 Quiet mode setting n2
Setting of upper limit of IDU/ODU
capacity distribution ratio
A8 Vacuum pump mode n4
Limit setting for max. capacity/output
capacity
A9
IPLV test
n6
Inquiry of malfunction
AA
EU AA level EER test mode
n7
Inquiry of parameters
AH
Heating
n8
Inquiry of project code of IDU
AC
Cooling
nA
Heat pump unit
AL
Charge refrigerant automatically
nH
Heating only unit
AE
Charge refrigerant manually
nC
Cooling only unit
AF
Fan
nE
Negative code
AJ
Cleaning reminding of filter
nF
Fan model
8 Maintenance and Care
Regular check, maintenance and care can extend unit’s service life. Please have specialized
person in charge of the management of air conditioners.
8.1 Outdoor Heat Exchanger
Outdoor heat exchanger shall be cleaned regularly, which is at least once every two months. You
can use a dust catcher with nylon brush to clean away the dust on the heat exchanger. If compressed

Lennox VRF VEC034N432U Specifications

General

Brand	Lennox
Model	VRF VEC034N432U
Category	Air Conditioner
Language	English