Multi Variable Air Conditioners Two-way Cassette Type Indoor Unit
22
7.3 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.
8 Table of Error Codes for Indoor Unit
Error
Code
Content
Error
Code
Content
Error
Code
Content
L0 Indoor Unit Error LA
Indoor Units Incompatibility
d9 Jumper Cap Error
L1
Indoor Fan
LH Low Air Quanlity Warning dA
Indoor Unit Network Address
L2 E-heater Protection LC ODU-IDU Incompatibility Error dH Wired Controller PCB Error
L3
Water Full
Ld
Protection for Indoor Fan (Fan
dC
Capacity DIP Switch Setting
L4
Wired Controller
Power Supply Error
d1 Indoor Unit PCB Error dL Indoor Unit CO
2
Sensor Error
L5 Freeze protection d3
Ambient Temperature Sensor
Error
dE
Capacity DIP Switch Setting
Error
L6
Mode conflict
d4
Inlet Pipe Temperature Sensor
Error
db
Special Code: Field
Debugging Code
L7
No Master Indoor
Unit Error
d6
Outlet Pipe Temperature
Sensor Error
C0 Communication Error
L8
Power Insufficiency
Protection
d7 Humidity Sensor Error AJ Filter Cleaning Reminder
L9
Quantity Of Group
Control Indoor Units
d8
Water Temperature Sensor
Error
o0 Other Drive Malfunction
o1
Low Bus bar
Voltage of Indoor
o2
High Bus bar Voltage of Indoor
Unit
o3
IPM Module Protection of
Indoor Unit
o4
Failure Startup of
Indoor Unit
o5
Overcurrent Protection of
Indoor Unit
o6
Current Detection Circuit
Malfunction of Indoor Unit
o7
Desynchronizing
Protection of Indoor
o8
Communication Malfunction of
Indoor Unit’s Drive
o9
Communication Malfunction of
Main Mater of Indoor Unit
oA
High Temperature of
Indoor Unit’s
ob
Malfunction of Temperature
Sensor of Indoor Unit’s
oC
Charging Circuit Malfunction
of Indoor Unit
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