T8602D CHRONOTHERM® IV PROGRAMMABLE THERMOSTATS
69-1510-4 8

Setting Current Day and Time

1. Press Set Current Day/Time.
NOTE: On initial powerup or after an extended power
loss, 1:00 pm flashes on the display until a key
is pressed.
2. Press Day until the current day is displayed.
NOTE: Sun=Sunday, Mon=Monday,
Tue=Tuesday, Wed=Wednesday,
Thu=Thursday, Fri=Friday, Sat=Saturday.
3. Press Time ∆ or Time ∇ until the current time is dis-
played.
NOTE: Tapping the Set Current Day/Time changes the
time in one hour increments.
NOTE: If the current time is Daylight Savings Time,
press Daylight Time until DST is displayed.
4. Press Run Program.
INSTALLER SYSTEM TEST
Use the Installer System Test to check the thermostat
operation. Refer to Table 4 for a list of the available
system tests.
CAUTION
Equipment Damage Hazard.
Minimum compressor off-time is bypassed
during Installer System Test.
Avoid cycling compressor quickly.
To start the system test:
Press and hold the increase and decrease keys at
the same time until 10 appears. All segments of the
display will be displayed before the 10 appears.
See Fig. 13 and 14.
Fig. 13. Display of all LCD segments.
Fig. 14. Display of test number.
Refer to Table 5 for the directions and results of the
specific tests.
NOTE: Press Time ∆ to advance to the next test and
Time ∇ to go back to the previous test. Press
Run Program to exit the System Test
M1461
9
Time Set Program
System Fan
Run
Program
Hold Temp
Set Current
Day/Time
Set Current
Day/Time
Wake Leave Return Sleep
Day Heat/Cool
Settings
Daylight
Time Copy
Set Day/Time
Mon
PM
M1462
0
Time Set Program
System Fan
Run
Program
Hold Temp
Set Current
Day/Time Wake Leave Return Sleep
Day
Day Heat/Cool
Settings
Daylight
Time Copy
Set Day/Time
PM
Tue
M1462
1
Time Set Program
System Fan
Run
Program
Hold Temp
Set Current
Day/Time Wake Leave Return Sleep
Day
Time
Heat/Cool
Settings
Daylight
Time Copy
Set Day/Time
AM
Tue
M1462
2
Time Set Program
System Fan
Run
Program
Hold Temp
Set Current
Day/Time Wake Leave Return Sleep
Day Heat/Cool
Settings
Daylight
Time
Daylight
Time
Copy
Set Day/Time
AM
DST
Tue
M1462
3
Time Set Program
System Fan
Run
Program
Run
Program Hold Temp
Set Current
Day/Time Wake Leave Return Sleep
Day Heat/Cool
Settings
Daylight
Time Copy Wake
Room
System
Fan
Heat
Auto
AM
DST
Tue
Table 4. Tests Available In Installer System Test.
Test
Number System Test Description
10-19 Heating equipment can be turned on and
off.
30-39 Cooling equipment can be turned on and
off.
40-49 Fan equipment can be turned on and off.
60 0 to
60 19
Keyboard keys test.
70-79 Thermostat information, including date
code and software versions, is displayed.
M1455
9
Aux Ht
Set Day/TimeSet Program
Mon
Wake Leave Return Sleep
OutdoorRoom
Filter
Wait System
Fan
Em Hea
t
On
Auto
Of
f
Coo
l
Auto
AM
PM
Hold for
HeatCool
Repl Batt
Recovery
DST
TueWedThu FriSat Sun
Days
Temporary Setting
Em Ht
M1461
2