69-0927—4
7
T8511G,R MICROELECTRONIC HEAT PUMP THERMOSTATS

Em HeatOffCool Auto Only

Heat Cool

OnAuto

System Fan

Room

Outdoor

Em Ht Temporary Setting

Wait

%Humid

Aux Ht Remote

Repl

Batt

M4844
INSTALLER SYSTEM-TEST
Use the Installer System-Test to check the thermostat
configurations and operation. Refer to Table 3 for a list of
the available system-tests.
To start the system-test:
NOTE: The minimum off time for compressors is
bypassed during the Installer System-Test.
Press and hold the increase ▲ and decrease ▼ keys, at
the same time, until two zeros appear. All segments of the
LCD are displayed before the two zeros appear.
NOTE: Press and hold the increase ▲ and decrease ▼
keys for three seconds to exit the system-test.
The system-test times out after five minutes
without any key presses.
Table 3. Tests Available in the Installer System-Test.
Refer to Table 4 for the directions and results of the
specific tests.
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 System key or system switch position test
70-79 Thermostat information including date code
and software versions are displayed
Table 4. Installer System-Test Options.
aAvailable on select models.
bT8511R models with fixed emergency heat output will not respond to this key press.
(Continued)
Key To
Press Test
Number Description
Heating Equipment System-Test
i 10 Enter heating equipment system-test. (Set T8511R system switch to HEAT and fan switch to
AUTO.)
▲ 11 Stage-one heat comes on. The 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-Testa
i 20 Change from heating to emergency heating equipment system-test.
(Set T8511R system switch to EM. HT.)
▲ b21 Emergency heat comes on. System fan also comes on.
▼ b20 Emergency heat turns off. (Set T8511R system switch to OFF.)
Cooling Equipment System-Test
i 30 Change from heating or emergency heating to cooling equipment system-test.
(Set T8511R system switch to COOL.)
▲ 31 Stage-one cooling and system fan come on.
▼ 30 Stage-one cool and system fan turn off.
M6792
TEST NUMBER