5
69-0446—2
FAN
Move the system switch to OFF, and the fan switch to
ON. The fan should run continuously. When the fan switch
is in the AUTO position, the fan cycles with the heating or
cooling system.
INSTALLER SELF-TEST (Optional)
Perform the following test as a check of all thermostat
functions. If thermostat does not respond as indicated,
replace thermostat.
1. Press AHEAD and BACK keys at the same time.
while holding down keys, all segments of the display should
be on (see Fig. 13).
Fig. 13—All segments on display.
Checkout
HEATING
Move the system switch to HEAT and the fan switch to
AUTO. Press WARMER key until the setting is about 10
°
F
(6
°
C) above room temperature. Heating should start and
the fan should run after a short delay. Press COOLER key
until the setting is about 10
°
F (6
°
C) below room tempera-
ture. The heating equipment should shut off.
COOLING
CAUTION
Do not operate cooling if outdoor temperature is
below 50
°
F (10
°
C). Refer to manufacturer’s rec-
ommendations.
NOTE: When cooling setting is changed, thermostat will
wait up to five minutes before turning on the air condi-
tioner. This delay protects the compressor.
Move the system switch to COOL and the fan switch to
AUTO. Press COOLER key until the setting is about 10
°
F
(6
°
C) below room temperature. The cooling equipment and
fan should start. Press WARMER key until the setting is
about 10
°
F (6
°
C) above room temperature. The cooling
equipment and fan should stop.
2. Set system switch to OFF. Press AHEAD and BACK
and PRESENT SETTING keys at the same time to enter
self-test.
3. Press each key as listed on next page, and look for
response listed as key is held down and released.
SUN MON TUE WED THU FRI SAT COOL ON HEAT ON
WAKE LEAVE RETURN SLEEP TEMPORARY
M8856
AM
PM
REPL
BAT
SET
PT