Lennox VRF VEWCL1E Instruction Manual page 72

Wired Controller VEWCL1E
Code
Inconsistency of Group-controlled
Lb Indoor Units in Reheat
Dehumidification System
LF Shunt Valve Setting Error
Wrong Setting of Function DIP
LJ
Switch
LC Outdoor-Indoor Incompatibility Error
Inconsistent Branch of
LU Group-controlled Indoor Units in Heat
Recovery System
Zero-crossing malfunction of PG
LP
motor
d1 Ambient Temperature Sensor Error
d3 Ambient Temperature Sensor Error
Inlet Pipe Temperature Sensor 1
d4
Malfunction of middle tube
d5
d6
d7
Content
Error
temperature sensor
Outlet Pipe Temperature
Sensor 1 Error
Humidity Sensor Error
Code
yL
yE
yF
o1
o2
o3
o4
o5
o6
o7
o8
o9
68
Content
Air-return outlet temperature
sensor error
High liquid level switch error
Low liquid level switch error
Low voltage of IDU bus bar
High voltage of IDU bus bar
IDU IPM module protection
IDU startup failure
IDU overcurrent protection
IDU current detective electric
circuit error
IDU losing step protection
IDU driver communication
error
Communication error of IDU
master controller