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.
a
Available on select models.
b
T8511R 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-Test
a
i
20
Change from heating to emergency heating equipment system-test.
(Set T8511R system switch to EM. HT.)
▲
b
21
Emergency heat comes on. System fan also comes on.
▼
b
20
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
