Lennox VEPS075N432K, User Manual

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DC Inverter Multi VRF System
31
Error
Code
Content
Error
Code
Content
C3
Communication malfunction between main
control and inverter fan driver
C4 Malfunction of lack of IDU
C5
Alarm because project code of IDU is
inconsistent
C8 Emergency status of compressor
C9 Emergency status of fan CH Rated capacity is too high
CC Malfunction of lack of main control unit CL Rated capacity is too low
CF Malfunction of multiple main control units CJ Malfunction of multiple main wired controllers
CP
Malfunction of multiple main wired
controllers
CU
Communication malfunction between IDU and the
receiving lamp plate
Cb Overflow distribution of IP address
— —
Status
Error
Code
Content
Error
Code
Content
A0 Unit waiting for debugging A1 Inquiry of compressor operation parameters
A2 Refrigerant recovery operation of after-sales A3 Defrosting
A4 Oil-return A5 Online test
A6 Heat pump function setting A7 Quiet mode setting
A8 Vacuum pump mode A9 IPLV test
AA EU AA level EER test mode AH Heating
AC Cooling AL Charging refrigerant automatically
AE Charging refrigerant manually AF Fan
AJ Alarm for cleaning filter AP Debugging confirmation for startup of unit
AU Long-distance emergency stop Ab Emergency stop of operation
Ad Limit operation n0 SE operation setting of system
n1 Setting of defrosting cycle K1 n2
Setting of upper limit of IDU/ODU capacity
distribution ratio
n4
Limit setting for max. capacity/output
capacity
n6 Inquiry of project code of IDU
n7 Inquiry of malfunction n8 Inquiry of parameters
nA Heat pump unit nH Heating only unit
nC Cooling only unit nE Negative sign code
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 air
source is available, it also can be used to clean the heat exchanger. Do not clean it with water.
8.2 Drain Pipe
Please check regularly whether drain pipe is blocked or not. Make sure condensate can be drained
out smoothly.