Installation, Operation & Maintenance Manual - PS-121B / PSH-141A
11
Operation
• When you set the air conditioner in AUTO mode, it will automatically select cooling,
heating (cooling only models without), or fan only operation depending on what
temperature you have selected and the room temperature.
• The air conditioner will control room temperature automatically around the temperature
point set by you.
• Under AUTO mode, you cannot select the fan speed.
AUTO operation
• Press the "MODE" button until the "FAN" indicator light comes on.
• Press the "FAN SPEED" button to choose the fan speed. The temperature cannot be
adjusted.
FAN operation
TIMER operation
• When the unit is on, pressing the Timer button will initiate the Auto-off stop program, the
TIMER OFF indicator light illuminates. Press the UP or DOWN button to select the
desired time. Press the TIMER button again within five seconds, the Auto-on start
program is initiated, and the TIMER ON indicator light illuminates. Press the up or down
button to select the desired Auto-on start time.
• When the unit is off, press the Timer button to initiate the Auto-on start program, press it
again within five seconds to initiate the Auto-off stop program.
• Press or hold the UP or DOWN button to change the Auto time by 0.5 hour increments,
up to 10 hours, then in one hour increments up to 24 hours. The control will count down
the time remaining until start.
• The system will automatically revert back to display the previous temperature setting if
there is no operation in a five second period.
• Turning the unit ON or OFF at any time or adjusting the timer setting to 0.0 will cancel the
Auto Start/Stop timer program.
• When the malfunction occurs, the Auto Start/Stop timed program will also be canceled.
SLEEP/ECO operation
• Press this button and the selected temperature will increase (cooling) or decrease
(heating) by 1°C/1°F 30 minutes. The temperature will then increase (cooling) or decrease
(heating) by another 1°C/1°F after an additional 30 minutes. This new temperature will be
maintained for seven hours before it returns to the originally selected temperature. This
ends the Sleep/Eco mode and the unit will continue to operate as originally programed.
NOTE: This feature is unavailable under FAN or DRY mode.
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