Lennox MLA Series User Manual

19
Adjusting Airow Direction
Manual Swing - Press Air Direction to put the louver at a
desired angle. The louver swings (upward or downward)
at a different angle with each press of the button.
Figure 26. Manual Swing
When cooling
Adjust the louver downwards (horizontally).
Figure 27. Manual Swing - Cooling
When heating
The vertical blades are not automatic and can be adjusted
manually as shown below. Adjust the louver vertically.
Figure 28. Manual Swing - Heating
Adjust the Air Flow Direction Left and Right
To adjust the horizontal louvers, hold the knob and move
the louver. You will nd a knob on the left-side and the
right-side blades.
Figure 29. Airow Adjustment - Left and Right
How to Clean the Air Filter
The lter prevents dust and other particles from entering
the indoor unit. Dust buildup can reduce the efciency of
the air conditioner. For optimum efciency, clean the air
lter every two weeks or more frequently if you live in a
dusty area. Replace the lter with a new one if it’s heavily
clogged and cannot be cleaned.
1. Open the front panel.
Figure 30. Open Front Panel
2. Remove the Air Filter: Press the clamps on the right
and left sides of the air lter down slightly, then pull
upward to remove the air lter.
Air Outlet
Selection Switch
Figure 31. Open Front Panel
Error Codes
Number
Cause
The number
of flashes
per second
Timer
indicator
1
Indoor EEPROM (Electrically Erasable
Programmable Read-Only Memory) error
1O
ff
2 Indoor and outdoor unit communication malfunction
2O
ff
3 Indoor fan speed malfunction
4O
ff
4 Indoor room temperature sensor error5Off
5 Evaporator coil temperature sensor error6Off
6 Refrigerant leak detection system malfunction
7O
ff
10 Overload protection
1O
n
11 Outdoor temperature sensor erro
r2
On
12 Outdoor condenser pipe sensor error3On
13 Discharge air temperature sensor error4On
14
Outdoor EEPROM (Electrically Erasable
Programmable Read-Only Memory) error
5O
n
15 Outdoor fan speed (DC fan motor only) malfunction
6O
n
16 T2b sensor erro
r7
On
17
18
19
20
Inverter module IPM protection 1 Flash
21
High/Low voltage protection 2 Flash
22
Compressor top overheating protection 3 Flash
23
Outdoor low temperature protection 4 Flash
Compressor drive erro
r5
Flash
Mode conflict 6 Flash
Compressor low-pressure protection 7 Flash
Figure 32. Error Codes

Lennox MLA Series Specifications

General

Brand	Lennox
Model	MLA Series
Category	Air Conditioner
Language	English