69-1052—1 6
T8511G DELUXE HEAT PUMP 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 ▲ and decrease ▼ keys at
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.
Fig. 11. Display of all the segments of the LCD.
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 ▲ and decrease ▼
keys together for three seconds to exit the
system-test. The system-test will time out after
ten minutes without any key presses.
Table 4. Installer System-Test Options.
(Continued)

Em HeatOffCool Auto Only

Heat Cool

OnAuto

System Fan

Room

Outdoor

Em Ht Temporary Setting

Wait

%Humid

Aux Ht Remote

Repl

Batt

M4844
M6792
TEST MODE NUMBER
Test
Number System-Test Description
10-19 Heating equipment can be turned on
and off
20-29 Emergency heat (select models)
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
Press Test
Number Description
Heating Equipment System-Test
i 10 Enter heating equipment system-test.
▲ 11 Stage-one heat comes on. System fan is also energized.
▲ 12 Stage-two heat comes on. Stage-one heat and system fan remain on.
▼ 11 Stage-two heat turns off.
▼ 10 Stage-one heat and system fan turn off.
Emergency Heating Equipment System-Test (select models)
i 20 Changing from heating to emergency heating equipment system-test.
▲ 21 Emergency heat comes on. System fan also comes on.
▼ 20 Emergency heat turns off.
Cooling Equipment System-Test
i 30 Change from heating or emergency heating to cooling equipment system-test.
▲ 31 Cool and system fan come on.
▼ 30 Cool and system fan turn off.