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T8501D DELUXE ZONE THERMOSTAT
IMPORTANT
Review the settings to confirm that they match
the system. To exit the Installer Setup, press and
hold the Information i key until the display
returns to normal (approximately three seconds).
INSTALLER SYSTEM-TEST
Use the Installer System-Test to check the thermostat
operation. Refer to Table 3 for a list of the available
system-tests.
To start the system-test:
CAUTION
The minimum off time for compressors is bypassed
during the Installer System-Test. Equipment
damage can occur if the compressor is cycled too
quickly.
Press and hold the increase
the same time, until two zeros appear. All segments of the
LCD will be displayed before the two zeros appear. See
Fig. 11 and 12.
Table 3. Tests Available In The Installer System-Test.
Test
Number
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
60-69
Keyboard keys test
70-79
Thermostat information including date
code and software versions are displayed
Key to
Test
Press
Number
Heating Equipment System-Test
i
10
11
10
Cooling Equipment System-Test
i
30
31
30
Fan Equipment System-Test
40
i
41
40
69-1049—1
and decrease
keys at
Self-Test Description
Table 4. Installer System-Test Options.
Enter heating equipment system-test.
Heat comes on. When Installer Setup number 02 is 01, the system fan is also energized.
Heat and system fan turn off.
Change from heating to cooling equipment system-test.
Cool and system fan come on.
Cool and system fan turn off.
Change from cooling to fan equipment system-test.
Fan comes on.
Fan turns off.
Em Ht Temporary Setting
Aux Ht
Repl
Wait
Batt
System
Em HeatOffCool Auto Only
Fig. 11. Display of all the segments of the LCD.
TEST MODE NUMBER
Fig. 12. Display of test number.
Refer to Table 4 for the directions and results of the
specific tests.
NOTE: Press and hold the increase
keys together for three seconds to exit the
system-test. The system-test will time out after
ten minutes without any key presses.
Description
6
Remote
Room
%Humid
Outdoor
Heat Cool
Fan
OnAuto
M4844
M6792
and decrease
(Continued)
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