1. Place the MODE switch in the OFF mode.
2. Push and hold both of the temperature ADJUST buttons simultaneously
(
▲
and
▼
) until “ROOM” and “OFF” are no longer displayed.
3. Press the LIGHT button until “d2” is displayed.
4. Thermostat will display “d2” and a number 1, 2 or 3. The number indicates
the degrees from the first stage differential setting (d1) before a call for
heating or cooling is made.
5. Use the
▲▼
buttons to select 1, 2 or 3 degrees.
6. Press the LIGHT button repeatedly until “DONE” is displayed.
TO CHANGE TEMPERATURE OFFSET
Aprilaire thermostats are factory tested and calibrated within 1° Fahrenheit.
However, it may be desirable to adjust the reading of the thermostat to
coincide with other temperature measuring devices.
1. Place the MODE switch in the OFF mode.
2. Push and hold both of the temperature ADJUST buttons simultaneously
(
▲
and
▼
) until “ROOM” and “OFF” are no longer displayed.
3. Press the LIGHT button until “OF” is displayed.
4. Press the
▲
and
▼
buttons to raise or lower the displayed
temperature. The thermostat will indicate the number of degrees
above or below actual temperature of adjustment.
11
