Check After The Usage Season; Table Of Error Codes For Indoor Unit; Malfunction Analyzing - Lennox VEHW007N432T Installation & Operation Instructions

(3) Check if the batteries in the wireless remote controller have been replaced.
(4) Check if the air filter has been installed properly
In order to start up the air conditioner smoothly after it has been turned off for a long time
period, energize the unit 8 hours before turning it on.

7.4 Check after the usage season

(1) Clean filter and body of air conditioner.
(2) Cut off the main power supply of air conditioner.

8 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 Anti-freezing Protection
L7 No Master Indoor Unit Error
Power Insufficiency
L8
Protection
Special Code:
db
Project Debugging Code

9 Malfunction Analyzing

Warning:
Do not repair the air conditioner by yourself for the incorrect repair would lead to electric
shockor fire. Please contact the service center and have the unit repaired by the specialized
personnel. Check the following items before contacting the service center, as it could save your
time and cost.
Malfunction Phenomena
The air conditioner could not start up
just after turned off
Odor gave out when the unit just was
turned on
Slight bicker was heard when the unit
was running
Mist came from the air outlet vent when
cooling
Error
Content
Code
Quantity Of Group Control Indoor
L9
Units Setting Error
LA Indoor Units Incompatibility Error
LH Low Air Quality Warning
Outdoor-Indoor Incompatibility
LC
Error
d1 Indoor Unit Circuit Board Error
d3 Ambient Temperature Sensor Error
Inlet Pipe Temperature Sensor
d4
Error
Outlet Pipe Temperature Sensor
d6
Error
Outlet Air Temperature Sensor
dL
Error
The over load protection switch of the unit makes it run after 3
minutes delay
Odors or cigarette smoke which has been absorbed in is discharged out.
This is the sound of the running refrigerant
Indoor air is cooled rapidly
15
High Wall Type Indoor Unit
Error
Code
d8 Water Temperature Sensor Error
d9 Jumper Cap Error
dA
Network Address Error
Wired Controller Circuit Board
dH
Capacity DIP Switch Setting
dC
dE Indoor Unit CO
C0 Communication Error
AJ Filter Cleaning Reminding
Malfunction Analyzing
Content
Indoor Unit
Error
Error
Sensor Error
2