Multi Variable Heat Pump Floor and Ceiling Type Indoor Unit
16
6 Routine Maintenance
(1) Turn off the unit and cut off the main power supply when cleaning the air conditioner to avoid electric shock or
injury.
(2) Use a ladder or other stable platform when cleaning the unit.
(3) Do not clean the unit with hot water whose temperature is higher than 45°C (113°F) to prevent fading or
warping.
(4) Do not dry the filters over open flame to avoid warping.
(5) Clean the filter with a damp cloth dipped in mild detergent.
(6) Please contact a qualified service technician if there is a malfunction.
6.1 Cleaning of Filter
(1) Remove the filters from inlet of IDU. Use a vacuum cleaner to remove dust. If the filters are dirty, wash
them with warm water and mild detergent. Dry the filters in the shade.
(2) If the unit is used in a very dusty environment , please clean it more frequently (about every two weeks).
6.2 Preseason Maintenance
(1) Check if the air inlet and air outlet of indoor and outdoor unit are blocked.
(2) Check if securely grounded.
(3) Check if all the power cords and communication cables are securely connected.
(4) Check if any error code displayed after turning on power.
6.3 Post-Seasonal Maintenance
(1) Set the unit in fan mode for half a day on a sunny day to dry the inner parts of unit;
(2) When
the unit won’t be
used for a long period of time, please turn off power supply to save energy. The
characters on the wired controller screen will disappear after turning off the power supply.
7 Table of Error Codes for Indoor Unit
Error
Code
Content
Error
Code
Content
Error
Code
Content
L0
Indoor Unit Error
LA
Indoor Units Incompatibility
Error
dA
Indoor Unit Hardware Address
Error
L1
Indoor Fan Protection
LH
Low Air Quality Warning
dH
Wired Controller PCB Error
L2
E-heater Protection
LC
ODU-IDU Incompatibility Error
dC
Capacity DIP Switch Setting Error
L3
Water Full Protection
d1
Indoor Unit PCB Error
dL
Outlet Air Temperature Sensor
Error
L4
Wired Controller Power
Supply Error
d3
Ambient Temperature Sensor
Error
dE
Indoor Unit CO
2
Sensor Error
L5
Freeze protection
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
Setting Error
d8
Water Temperature Sensor
Error
d9
Jumper Cap Error
