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T8624D CHRONOTHERM
®
IV DELUXE PROGRAMMABLE MULTISTAGE THERMOSTATS
9 69-1412—1
Table 5. Installer System Test Options.
NOTE: Press any key and the displayed numbers will change. Press Time ∇ to go to the previous test and Time ∆ to
go to the next test. The Run Program key will not exit this test. Press Time ∆ or Time ∇ and then the
Run Program key to exit.
Keys to
Press
Test
Number Description
Heating Equipment System Test
Time ∆ 10 Enter heating equipment System Test.
!
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.
Cooling Equipment System Test
Time ∆ 30 Change from heating to cooling equipment System Test.
!
31 Stage-one cool and system fan come on.
"
32 Stage-two cool comes on. Stage-one cool and system fan remain on.
"
31 Stage-two cool turns off.
"
30 Stage-one cool and system fan turn off.
Fan Equipment System Test
Time ∆ 40 Change from cooling to fan equipment System Test.
!
41 Fan comes on.
"
40 Fan turns off.
Key Operation System Test
Time ∆ 60 Change from fan to key operation System Test.