Aprilaire 1730A owner manual Turning Control On/Off, ON/OFF Buttons, Changing The Humidity Setting

Models: 1730A

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TURNING CONTROL ON/OFF

TURNING CONTROL ON/OFF

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.

Figure 3 – ON/OFF Buttons

CHANGING THE HUMIDITY SETTING

The first press of either the Figure 3 – ON/OFF Buttons orCHANGING THE HUMIDITY SETTING 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 4 – UP/DOWN Buttons

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.

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

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.

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Aprilaire 1730A Turning Control On/Off, ON/OFF Buttons, Changing The Humidity Setting, UP/DOWN Buttons, Control Limits