Routine Maintenance; Cleaning Of Filter; Maintenance Before The Seasonal Use; Maintenance After The Seasonal Use - Lennox VRF VE8K007C432P Installation Manual

6 Routine Maintenance

(1) Do turn off the unit and cut off the main power supply when cleaning the air conditioner to avoid electric
shock or injury.
(2) Stand at solid table when cleaning the unit.
(3) Do not clean the unit with hot water whose temperature is higher than 45°C to prevent fade or deformation.
(4) Do not dry the filters by fire, or it may catch fire or become deformed.
(5) Clean the filter with a wet cloth dipped in neutral detergent.
(6) Please contact after-sales service staff if there is abnormal situation.

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, and dry the filters in the shade.
(2) If the unit used in the environment with much dust, please clean it regularly (Usually once
every two 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 securely grounded.
(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
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
Multi Variable Air Conditioners 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
19
Error
Content
Code
d9 Jumper Cap Error
Indoor Unit Network
dA
Address Error
Wired Controller PCB
dH
Error
Capacity DIP Switch
dC
Setting Error.
Indoor Unit CO
dL
Error
Capacity DIP Switch
dE
Setting Error.
Special Code: Field
db
Debugging Code
C0 Communication Error
AJ Filter Cleaning Reminder
Sensor
2