Adjusting Airflow Direction; Adjust The Air Flow Direction Left And Right; How To Clean The Air Filter; Error Codes - Lennox MLA Series Installation & User's Instructions

Adjusting Airflow 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 find a knob on the left-side and the
right-side blades.
Figure 29. Airflow Adjustment - Left and Right

How to Clean the Air Filter

The filter prevents dust and other particles from entering
the indoor unit. Dust buildup can reduce the efficiency of
the air conditioner. For optimum efficiency, clean the air
filter every two weeks or more frequently if you live in a
dusty area. Replace the filter 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 filter down slightly, then pull
upward to remove the air filter.
Figure 31. Open Front Panel

Error Codes

Number Cause
Indoor EEPROM (Electrically Erasable
1
Programmable Read-Only Memory) error
2 Indoor and outdoor unit communication malfunction
3 Indoor fan speed malfunction
4 Indoor room temperature sensor error
5 Evaporator coil temperature sensor error
6 Refrigerant leak detection system malfunction
10 Overload protection
11 Outdoor temperature sensor error
12 Outdoor condenser pipe sensor error
13 Discharge air temperature sensor error
Outdoor EEPROM (Electrically Erasable
14
Programmable Read-Only Memory) error
15 Outdoor fan speed (DC fan motor only) malfunction
16 T2b sensor error
17
Inverter module IPM protection
18 High/Low voltage protection
Compressor top overheating protection
19
Outdoor low temperature protection
20
Compressor drive error
21
Mode conflict
22
23 Compressor low-pressure protection
Figure 32. Error Codes
19
Air Outlet
Selection Switch
The number
Timer
of flashes
indicator
per second
1 Off
2 Off
4 Off
5 Off
6 Off
7 Off
1 On
2 On
3 On
4 On
5 On
6 On
7 On
1 Flash
2 Flash
3 Flash
4 Flash
5 Flash
6 Flash
7 Flash