Function Buttons; Display; Operations - Lennox MCA Series User Manual

Function Buttons

See "Figure 5. Remote Controller Function Buttons" on
page 5 for illustration for remote function buttons.
• Up arrow button. Press to increase the temperature
setpoint or to scroll through settings options.
• On/Off button. Press to turn the indoor unit on or off.
• Mode button. Press to scroll through the operation
modes: Cool → Dry → Fan.
Fan speed. Press to scroll through the fan speeds:
•
Low → Med → High.
• Sleep button. Press to activate "night-mode". This will
automatically increase (cooling) the setpoint 2°F (1°C)
per hour for the first two hours. The modified setpoint
will be set for five hours. After seven total hours the in-
door unit will turn off.
• Turbo button. Press to active turbo mode. The indoor
unit will ramp up to reach the setpoint more quickly. Af-
ter reaching the set point or after 30 minutes, the indoor
unit will resume the previous operating conditions.
• Clean button. Press to activate self cleaning mode. In
cooling or dry mode only, the indoor unit will temporar-
ily change operation to allow condensate on the indoor
unit coil to evaporate, and then will return to the previ-
ous operating conditions.
NOTE: Only available in COOL or DRY mode.
• Down arrow button. Press to decrease the tempera-
ture setpoint or scroll through settings options.
• Silence Function. Hold the fan button for two seconds
to activate silence function. This operates the compres-
sor at low frequency and low fan speed to reduce oper-
ating sound levels to a minimum.
NOTE: Silence function may result in insufficient cooling
capacity. Hold the fan button for two seconds again
to stop the silence function.
• Timer ON button. Press to set the number of hours of
delay before the indoor unit begins operation.
Timer OFF button. Press to set the number of hours of
•
delay before the indoor unit stops operation.
• Swing button. Press once to initiate louver left and
right oscillation. Press again to stop louver oscillation.
Louvers remain in place where stopped.
• Direct (Direction) button. Press to move louvers up
and down in six degree increments. Louvers remain in
place where stopped.
• LED button. Press the LED button to turn on the indoor
unit display (on units with display). Press the button
again to turn off the display.
• Follow (Follow Me) button. Press to activate the wire-
less remote's air temperature sensor. This will also trans-
fer the temperature sensing function from the indoor unit
to the remote. The indoor unit's air temperature sensor
will be disabled. The indoor unit will regulate the room
temperature based on the temperature sensor in the re-
mote controller, rather than the sensor in the indoor unit.
The remote controller will send the indoor unit a sig-
nal every three minutes. If the indoor unit doesn't re-
ceive the signal for seven minutes, or if the button is
pressed again, the Follow Me function will terminate.
The remote controller must remain pointed toward the
indoor unit and must be within 26 feet (8 meters) of the
unit. Do not remove the controller from the room or ob-
struct the signal of the remote controller during Follow
Me operation.

Display

See "Figure 6. Remote Controller Display" on page 5
for illustration of remote control.
• 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 cur-
rent mode of operation. Press the mode but-
ton to scroll
Cool → Dry → Fan.
• Setpoint or Room Temperature. Displays the setpoint
temperature during normal operation. Displays the
room temperature when in Follow me mode. 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 status
of wireless remote controller batteries. Only appears
when battery is low.
• Sleep mode. Icon displays to indicate that sleep mode
operation is on.
• Follow me. This icon displays when the air temperature
sensor in the wireless remote controller is the sensor
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.

Operations

Start/Stop Operation
Press the LED power button.
• Controller ON: LED power button lit brightly.
• Controller OFF: LED power button not lit.
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.
To Set the Operation Mode
Press the Mode button to scroll through the mode selections.
• Cool – System operates in cooling mode.
• Dry – System removes humidity according to preset
conditions (fan speed and setpoint temperature). Can-
not adjust fan speed.
NOTE: Temperature will be 6-8 degrees colder if this mode
is used.
6
through the operation modes: