Aprilaire COMPACT DEHUMIDIFIER 1730A - Manual (Page 3)

TURNING CONTROL ON/OFF
FIGURE 3 – ON/OFF Buttons
• Pressing the ON button will turn on the control.
• Pressing the OFF button will turn off the control.
• The control will continue to display the measured humidity when OFF.
• The humidity setting cannot be changed when the control is OFF.
CHANGING THE HUMIDITy SETTING
FIGURE 4 – UP/DOWN Buttons
• The first press of either the or
button will display the humidity setting on
the LCD.
• Each subsequent push of the up or down
buttons will change the setting by 1%.
• If a button is held down, the setting
will continually change by 1% every
1/2 second for as long as the button is
pressed.
• The control will exit the humidity setting
screen 5 seconds after the last button
press/release.
FIGURE 5 – Humidity Setting Screen
90-1637
HOW DOES THE CONTROL WORK?
• When the measured humidity is greater than the setting, the control will turn on the dehumidifier and ON will blink on the LCD display.
• When the measured humidity falls 3% below the setting, the control will turn off the dehumidifier and ON will stop blinking, but remain
displayed on the LCD.
SEQUENCE OF OPERATION
• The dehumidifier will turn off if one of the control limits has been exceeded.
• If the control measures a dew point below 40°F OR a temperature above 99°F, the control will deactivate the dehumidifier output if actively
dehumidifying, the dehumidifier will stop dehumidifying, and ON and
*
will blink on the LCD screen (see Figure 2).
• The control will resume normal operation when conditions fall back within the control limits.
CONTROL LIMITS
The control limits are used to make sure the dehumidifier does not run when conditions are outside of the operating limits. Dehumidifiers are not
as effective when conditions are outside of the operating limits. For example, the dehumidifier will not remove much moisture when conditions
are cool and dry. Control limits allow the dehumidifier to work efficiently within the operating range and turn off when conditions are outside of
these limits.
• Dew Point Lower Limit: 40°F
• Temperature High Limit: 99°F
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