Multi Variable Air Conditioners Compact Cassette Type Indoor Unit
21
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
Error
Content
Error
Content
L0 Indoor Unit Error LA
Indoor Units Incompatibility
d9 Jumper Cap Error
L1 Indoor Fan Protection LH Low Air Quanlity Warning dA
Indoor Unit Network
L2 E-heater Protection LC
ODU-IDU Incompatibility
dH
Wired Controller PCB
L3 Water Full Protection d1 Indoor Unit PCB Error dC
Capacity DIP Switch
L4
Wired Controller Power
d3
Ambient Temperature
dL
Indoor Unit CO
2
Sensor
L5 Freeze Protection d4
Inlet Pipe Temperature
dE
Capacity DIP Switch
L7
No Master Indoor Unit
d6
Outlet Pipe Temperature
db
Special Code: Field
L8
Power Insufficiency
d7 Humidity Sensor Error C0 Communication Error
L9
Quantity Of Group Control
Indoor Units Setting Error
d8
Water Temperature Sensor
AJ Filter Cleaning Reminder
o1
Low Bus bar Voltage of
o2
High Bus bar Voltage of
o3
IPM Module Protection of
o4
Failure Startup of Indoor
Unit
o5
Overcurrent Protection of
Indoor Unit
o6
Current Detection Circuit
Malfunction of Indoor
o7
Desynchronizing
Protection of Indoor Unit
o8
Communication
Malfunction of Indoor Unit’s
o9
Communication
Malfunction of Main
oA
High Temperature of
Indoor Unit’s Module
ob
Malfunction of
Temperature Sensor of
oC
Charging Circuit
Malfunction of Indoor
o0 Other Drive Malfunction db Special Code: Field Debugging Code
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