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T8665A CHRONOTHERM® IV DELUXE PROGRAMMABLE WIRELESS THERMOSTAT
9 69-1535-3
INSTALLER SYSTEM TEST
Use the Installer System Test to check the thermostat
operation. Refer to Table 4 for a list of the available
Installer System Tests.
CAUTION
Equipment Damage Hazard.
Compressor damage can result if compressor
is cycled too quickly.
Be aware that compressor minimum off time is
bypassed during the Installer System Test.
To start the system test:
1. Press and hold increase V and decrease W at
the same time until 10 appears.
2. Observe all segments of the display are displayed
before the 10 appears. See Fig. 9 and 10.
Fig. 9. LCD segments display.
Fig. 10. Test number display.
Refer to Table 5 for the instructions and description of the
specific tests.
NOTE: Press Time V to advance to the next test and
press Time W to go back to the previous test.
Press Run Program to exit the system test.
NOTE: Press any key and the displayed number will change. Press TIme W to go to the previous test and Time V
to go to the next test. The Run Program key will not exit this test. Press Time V or Time W and then the Run
Program key to exit.
Table 4. Tests Available in Installer System Test.
Test Number System Test Description
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 0 to
60 19
Keyboard keys test.
70-79 Thermostat information, including
date code and software versions,
are displayed.
M1455
9
Aux Ht
Set Day/TimeSet Program
Mon
Wake Leave Return Sleep
OutdoorRoom
Filter
Wait
System
Fan
Em Hea
t
On
Auto
Of
f
Coo
l
Auto
AM
PM
Hold for
Heat
Cool
Repl Batt
Recovery
DST
TueWedThu Fri Sat Sun
Days
Temporary Setting
Em Ht
M1461
2
Table 5. Installer System Test Options.
Key to Press Test Number Description
Heating Equipment System Test
Time 10 Enter heating equipment system test.
V 11 Heat comes on. When Installer Setup number 2 is 1, the system fan is also
energized.
W 12 Heat and system fan turn off.
Cooling Equipment System Test
Time 30 Change from heating to cooling equipment system test.
V 31 Cool and system fan come on.
W 30 Cool and system fan turn off.
Fan Equipment System Test
Time 40 Change from cooling to fan equipment system test.
V 41 Fan comes on.
W 40 Fan turns off.
Key Operation System Test
Time 60 2 Change from fan to key operation system test.