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6.3 Maintenance after the Seasonal Use
(1) Set the unit in fan mode for half a day in a sunny day to dry the inner part of unit.
(2) When the unit won't be used for a long time, please cut off power supply for energy saving;
the characters on the wired controller screen will disappear after cutting off the power
supply.
7 Table of Error Codes for Indoor Unit
Error
Content
Code
L0
Indoor Unit Error
L1
Indoor Fan Protection
L2
E-heater Protection
L3
Water Full Protection
Wired Controller Power
L4
Supply Error
L5
Freeze Protection
No Master Indoor Unit
L7
Error
Power Insufficiency
L8
Protection
Quantity Of Group Control
L9
Indoor Units Setting Error
Low Bus bar Voltage of
o1
Indoor Unit
Failure Startup of Indoor
o4
Unit
Desynchronizing
o7
Protection of Indoor Unit
High Temperature of
oA
Indoor Unit's Module
o0
Other Drive Malfunction
Multi Variable Air Conditioners Compact Cassette Type Indoor Unit
Error
Content
Code
Indoor Units Incompatibility
LA
Error
LH
Low Air Quanlity Warning
ODU-IDU Incompatibility
LC
Error
d1
Indoor Unit PCB Error
Ambient Temperature
d3
Sensor Error
Inlet Pipe Temperature
d4
Sensor Error
Outlet Pipe Temperature
d6
Sensor Error
d7
Humidity Sensor Error
Water Temperature Sensor
d8
Error
High Bus bar Voltage of
o2
Indoor Unit
Overcurrent Protection of
o5
Indoor Unit
Communication
o8
Malfunction of Indoor Unit's
Drive
Malfunction of
ob
Temperature Sensor of
Indoor Unit's Module
db
21
Error
Code
d9
dA
dH
dC
dL
dE
db
C0
AJ
o3
o6
o9
oC
Special Code: Field Debugging Code
Content
Jumper Cap Error
Indoor Unit Network
Address Error
Wired Controller PCB
Error
Capacity DIP Switch
Setting Error.
Indoor Unit CO
Sensor
2
Error
Capacity DIP Switch
Setting Error.
Special Code: Field
Debugging Code
Communication Error
Filter Cleaning Reminder
IPM Module Protection of
Indoor Unit
Current Detection Circuit
Malfunction of Indoor
Unit
Communication
Malfunction of Main
Mater of Indoor Unit
Charging Circuit
Malfunction of Indoor
Unit
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