Service Indicator
When abnormal equipment operation is detected, the
SERVICE indicator will flash on the screen (see figure 17).
This indicates that the equipment requires service from a
qualified service technician.
Service Indicator Flashing
MO
TU WE TH FR SA SU
I0:i4
AM
PM
PROG
A B C D
ROOM
79
°
Figure 17
Thermostat RESET
Under some abnormal conditions, it may be necessary to
reset" the thermostat to its default condition. Such a RE-
SET would delete all programming and settings and there-
fore should only be used on rare occasions when the the
thermostat fails to function as designd and/or as pro-
grammed. Such an instance can occur as a result of a pow-
er surge or similar electrical disturbance (e.g. after an elec-
trical storm or power outage). The RESET button can be
used to recover from this situation.
CAUTION
When the RESET button is pressed, ALL settings re-
vert back to the defaults, including the default pro-
gram (see tables 2 and 3).
The RESET button is an unlabeled, recessed button lo-
cated behind the door on the right−hand side of the thermo-
stat, below the SETTINGS button (see figure 3). Use a pa-
per clip or small pencil to press the RESET button; ALL
thermostat settings will be reset to the defaults listed in the
Default Thermostat Settings section.
505049M 5/1/05
FILTER
SERVICE
FAN
ON
AUTO
HOLD
SYSTEM
COOL
OFF
HEAT
Removing and Installing Thermostat
The thermostat hinges on tabs on the top of the subbase;
no tool is needed to remove the thermostat from the sub-
base. Pivot the bottom of the thermostat outward (releas-
ing the snaps), then lift up to remove.
To install it, first position the top tilted toward the wall brack-
et and align it until you feel the tabs and slots engage; then,
while the top is in place, pivot the bottom toward the wall
until the thermostat snaps into place.
Default Thermostat Settings
Default thermostat settings are in table 2 and the default
program is shown in table 3.
Default Thermostat Settings
Mode
Setpoint
Fan
Filter Reminder
Maintenance Reminder
Equipment Protection
Timers
Default Program Settings
Programs
Time
Weekday − A 6:00am
Weekday − B 8:00am
Weekday − C 6:00pm
Weekday − D 10:00pm 62_F / 17°C
Weekend − A 6:00am
Weekend − B 8:00am
Weekend − C 6:00pm
Weekend − D 10:00pm 62_F / 17°C
Weekday
Monday, Tuesday, Wednesday,
Thursday, Friday
Weekend
Saturday, Sunday
Page 6
Table 2
Heat (Permanent Hold
Mode)
70°F (or 21°C)
Auto
OFF
OFF
Reset Back to Zero
Table 3
Temperature
Temperature
(Heat)
(Cool)
70_F / 21°C
78_F / 26°C
62_F / 17°C
85_F / 29°C
70_F / 21°C
78_F / 26°C
82_F / 28°C
70_F / 21°C
78_F / 26°C
62_F / 17°C
85_F / 29°C
70_F / 21°C
78_F / 26°C
82_F / 28°C