Operating Instruction - Lennox MHA Series Manual

• Transmitting display. Icon blinks once when a signal
is sent from the wireless remote controller.
• Operation mode. These icons show the current mode
of operation. Press the mode button to scroll through
the operation modes:
Auto → Cool → Dry → Heat → Fan.
• Setpoint or Room Temperature. Displays the set-
point temperature during normal operation. Displays
the room temperature when in Follow me mode. Adjust
the setpoint with up & down arrow buttons. No display
when unit is in Fan mode.
• Remote controller On. Icon displays to indicate that
the remote controller is on.
• Transmitting display. Icon blinks once when a signal
is sent from the wireless remote controller.
• Operation mode. These icons show the current mode
of operation. Press the mode button to scroll through
the operation modes:
Auto → Cool → Dry → Heat → Fan.
• Setpoint or Room Temperature. Displays the set-
point temperature during normal operation. While in
follow me mode the wireless remote will display the
room temperature and the wall unit will display the
target set point temperature to be reached. Adjust the
setpoint with up and down arrow buttons. No display
when unit is in Fan mode.
• Timer ON/OFF. These icons light up to indicate that
the indoor unit has a timed auto-start or auto-stop set
up. Battery charge status. Icon displays charge sta-
tus of wireless remote controller batteries.
• Sleep mode. Icon displays to indicate that sleep mode
operation is on.
• Follow me. This icon displays when the air tempera-
ture sensor in the wireless remote controller is the sen-
sor being used by the indoor unit. When this function
is off, the indoor unit uses a built-in sensor.
• Fan speed. Displays the current fan speed.

Operating Instruction

1. Remove battery cover from back of remote.
2. Insert batteries into battery compartment.
3. Replace cover on controller.
NOTE: ON/OFF Timer, setpoint, fan speed and all other
functions will have to be reset whenever the batteries
are completely discharged or are replaced.
Batteries
Do not mix old and new batteries or batteries of different
types.
Do not leave the batteries in the remote controller if the
controller will not be used for an extended amount of time.
Dispose of used batteries following local and state waste
management standards.
Select Fahrenheit or Celsius
Press and hold the Up and Down buttons at the same
time for three seconds to toggle between Fahrenheit and
Celsius.
NOTE: To Set the Operation Mode
Press the Mode button to scroll through the mode selections.
• Auto – System operates in cooling or heating mode as
determined by the setpoint and the room temperature.
Cool – System operates in cooling mode.
•
• Dry – System removes humidity according to preset
conditions (fan speed and setpoint temperature, not a
humidistat sensor). Cannot adjust fan speed.
• Heat – System operates in heating mode.
• Fan – This is for Fan only, no heating or cooling.
To set (or change) the room temperature setting
(setpoint)
Press the up and down arrow buttons to adjust the setpoint.
1. Press the Power button, an LED light on the indoor unit
displays.
2. Press the Mode button until the display shows AUTO.
3. Adjust temperature setpoint using up and down arrow
buttons (range 62°F – 86°F).
NOTE: Fan speed is auto and is not adjustable.
Cool/Heat/Fan mode
1. Press the Mode button to select Cool, Heat, or Fan.
2. Adjust the temperature setpoint using up and down
arrow buttons (range 62°F – 86°F).
3. Press the Fan Speed button to select Auto, Low,
Med, or High fan speed.
NOTE: Temperature set point is not displayed in Fan mode.
1. Press the Power button. An LED light on the indoor unit
displays.
2. Press the Mode button to select Dry.
3. Adjust the temperature set point using up and down
arrow buttons.
NOTE: Fan speed is not adjustable in dry mode. Using dry
mode will over shoot the set point by 6 - 8 degrees.
There is no humidity sensor.
6
WARNING
Auto Mode
Dry Mode