T8635L MICROELECTRONIC COMMUNICATING PROGRAMMABLE THERMOSTAT
69-1331—5 14
3. Press or until the current time is dis-
played.
NOTE: Tapping the Set Current Day/Time key
changes the time in one-hour incre-
ments.
4. If the current time is Daylight Savings Time, press
Daylight Time key to display DST.
5. Press Run Program key.
Programming
See the Owner’s Guide, 69-1332, for complete pro-
gramming instructions.
INSTALLER SYSTEM TEST
Use the Installer System Test to check the thermostat
and W8635 Equipment Interface Module operation for
each thermostat in the system. Table 8 lists the avail-
able system tests.
IMPORTANT
When used in zoning, you must exit Installer
System Test before entering Installer System
Test at another thermostat.
See Table 9 for Installer System Test descriptions.
Table 8. Installer System Tests.
CAUTION
Equipment Damage Hazard.
Minimum compressor off-time is bypassed
during Installer System Test.
Do not allow compressor rapid cycling (on and
off).
Observe compressor protection period.
Starting Installer System Test
Press and hold the ▲ and ▼ keys at the same time
until 10 appears. All segments of the display are shown
before the test number 10 appears. See Fig. 15 and 17.
Fig. 17. Test number display.
Time
Set Program
SystemFilter Fan
Run
Program
Hold Temp
Set Current
Day/Time
Wake
Leave
Return Sleep
Day
Heat/Cool
Settings
Daylight
Time
Copy
M17769
Time
Set Day/Time
AM
Tue
Time
Set Program
SystemFilter Fan
Run
Program
Hold Temp
Set Current
Day/Time
Wake
Leave
Return Sleep
Day
Heat/Cool
Settings
Daylight
Time
Copy
M17770
Daylight
Time
Set Day/Time
AM
Tue
Time
Set Program
SystemFilter Fan
Run
Program
Hold Temp
Set Current
Day/Time
Wake
Leave
Return Sleep
Day
Heat/Cool
Settings
Daylight
Time
Copy
M1777
Run
Program
Wake
Room
System
Fan
Hea
Auto
AM
DST
Tue
Test
Number System Test Description
10-12 Heating stages can be turned on and off in
sequence.
20-21 Emergency heating can be turned on and off.
30-32 Cooling stages can be turned on and off in
sequence.
40-42 Fan and damper test.
60 Keyboard keys test.
70-74 Thermostat information, including date code
and software versions, are displayed.
M10257
Table 9. Installer System Test Options.
Key to Press Test Number Description
Heating Equipment System Test
10 Enter Heating Equipment system test.
▲
11 First Stage Heat turns on.
▲
12 Second Stage Heat turns on.
▼
11 Second Stage Heat turns off.
▼
10 First Stage Heat turns off.
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