Multi Variable Air Conditioners Compact Cassette Type Indoor Unit
21
6.1 Cleaning of Filter
(1) Remove the air filter on the air inlet for cleaning. Use a dust catcher or water to clean it. If the
filter is very dirty (e.g. greasy), you can clean it using warm water (below 45°C) that is mixed
with mild detergent. Then let it dry naturally in cool places.
(2) If the air conditioner is used in dusty place, please clean the air filter regularly (generally once
every 2 weeks).
6.2 Maintenance before the Seasonal Use
(1) Check if the air inlet and air outlet of indoor and outdoor unit are blocked.
(2) Check if the grounding wire is in good condition.
(3) Check if all the power cord and communication cable are securely connected.
(4) Check if any error code displayed after energized.
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
Error
d9 Jumper Cap Error
L1 Indoor Fan Protection LH Low Air Quality 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
Outlet Air Temperature
L5 Freeze protection d4
Inlet Pipe Temperature
dE
Indoor Unit CO
2
Sensor
L7
No Master Indoor Unit
d6
Outlet Pipe Temperature
dy
Water Temperature Sensor
Error
L8
Power Insufficiency
d7 Humidity Sensor Error C0 Communication Error
L9
Quantity Of Group Control
Indoor Units Setting Error
d8 Water Temperature Error AJ Filter Cleaning Reminder
Special Code: Field Debugging Code
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