Robertshaw RS4320C USERS MANUAL - Manuel (Page 4)

User Settings – Defaults
During any program changes the display returns back to the operating
display if a button has not been pushed in 10 seconds.
The temperature scale is set to Fahrenheit.
Night light is on.
The first stage differential is 1 °F.
The second stage differential (RS4220C) is 2 °F.
The second stage delay is 20 minutes.
Third stage delay (RS4320C) is 20 minutes.
Auto changeover is enabled.
Auto changeover deadband is 3 °F.
Filter reminder length is off.
Temperature offset is 0 degrees.
The HI heat limit is 90 °F (32 °C).
The LO cool limit is 45 °F (7 °C).
The operation mode is OFF.
The fan setting is Auto.
The keypad has no password protection.
Refer to the Pop-Up Wizard section in the installation manual for a
complete list of factory defaults and contractor settings.
Emergency Heat
Your system may include Emergency Heat. The RS4220C and RS4320C
thermostats have an emergency heat capability for multi stage heat
pump systems. To determine if your system is capable of using
emergency heat contact your contractor. Use the button to enter
the EMER mode. An E will be displayed with the Heat symbol. This
mode is used to bypass the heat pump when it needs servicing or when
it cannot keep up with the heat demand.
Auto Changeover
Auto changeover is the ability of the thermostat to switch automatically
between heating settings and cooling settings. This is useful in Spring
and Fall when the days are warm and the nights are cool. In heat mode
if the room continues to warm beyond a set threshold the thermostat
switches to the cool mode and the associated cooling settings. The
reverse is also true.
As the room temperature changes, the thermostat will call for heating or
cooling as needed. To prevent the heating and cooling systems from
overriding each other, an auto changeover deadband is used.
The deadband is the minimum temperature swing before changing from
heating to cooling or vice versa. The larger the deadband the more the
room temperature will vary.
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