Settings; Temperature Differential; Changing °F To °C - Robertshaw 8400 User Manual

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.
Fan
Auto: Equipment controls the fan.
On: The fan operates continuously.

Temperature Differential

♦
The temperature differential is factory set at 1.0°F (.5°C). This means that
whenever the room temperature changes by one degree Fahrenheit
from the temperature setting, the system will turn on. If the system turns
on too often, increase the temperature differential.
Changing Fahrenheit (°F) to Celsius (°C),
♦
the Temperature Differential, and
the Filter Monitor
1. The thermostat is preset to display the
temperature in degrees Fahrenheit (US
models) or degrees Celsius (Canadian
models). The temperature display can be
changed. Press and hold both the
and
or C. Release buttons. Press the
2. Wait five seconds or press
differential setting.
3. The display will read diFF. The tempera-
ture differential is factory set at 1.0°F
(0.5°C). Press the
the differential up or down.
4. Wait five seconds or press
display will switch to the
filter monitor setting.
5. CHECK FILTER and the length of hours for
the filter monitor will be displayed.
6. Use the
from 0 (OFF) to 9900 hours. NOTE: The
filter timer is based on equipment run
time. Select the length of time based on
the recommended service interval for
your filter.
7. Press the
buttons for three seconds. The display will flash either an F
or
or to adjust the filter timer
to return to normal operation.
or
and the display will switch to the
button to adjust
and the
8
button to switch the display.