Robertshaw 9420 User Manual page 8

Step 4: Customizing the Thermostat
Settings
System
Cool: The thermostat controls the cooling.
Off: The heating and cooling systems are off.
Heat: The thermostat controls the heat.
Emer: The thermostat controls the second stage emergency heat.
Used only when the primary stage of heat is not functioning or
requires service. The display shows EMER when emergency heat is
activated.
Fan
Auto: Equipment controls the fan.
On: The fan operates continuously.
Temperature
Heating: The default temperature for heating is 70°F (21°C). To
change the default setpoint, put the system switch in HEAT and
press the
down. The display will show SET. The display will return to the
current room temperature three seconds after the last input and
the new setpoint will be saved.
Cooling: The default temperature for cooling is 78°F (25°C). To
change the default setpoint, put the system switch in COOL and
press the
down. The display will show SET. The display will return to the
current room temperature three seconds after the last input and
the new setpoint will be saved.
or button to adjust the temperature setting up or
or button to adjust the temperature setting up or
Figure 7
8