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T8624D CHRONOTHERM
®
IV DELUXE PROGRAMMABLE MULTISTAGE THERMOSTATS
69-1412—1 8
NOTE: If the current time is Daylight Savings Time,
press Daylight Time until DST is displayed.
4. Press Run Program.
Viewing or Resetting Timer Settings
When the thermostat activates a timer, the thermostat
flashes Filter until the timer resets.
1. Reset the timer by pressing the i key until the
expired timer is displayed.
2. Press the Time skey to reset the timer.
3. Press the Run Program key.
NOTE: You can view the number of days remaining at
any time by pressing the i key three or four
times. If more than one timer is active, all active
timers show sequentially when pressing the
i key several times.
INSTALLER SYSTEM TEST
Use the Installer System Test to check the thermostat
operation. Refer to Table 4 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 10 appears. All segments of the
display will be displayed before the 10 appears.
See Fig. 10 and 11.
Table 4. Tests Available In Installer System Test.
Fig. 10. Display of all the segments of the LCD.
Fig. 11. Display of test number.
Refer to Table 5 for the directions and results of the
specific tests.
Press Time ∆ to advance to the next test and Time ∇ to
go back to the previous test. Press Run Program to exit
the system test
M14622
Time Set Program
System Fan
Run
Program
Hold Temp
Set Current
Day/Time
Wake
Leave
Return Sleep
Day
Heat/Cool
Settings
Daylight
Time
Daylight
Time
Copy
Set Day/Time
AM
DST
Tue
M14623
Time Set Program
System Fan
Run
Program
Run
Program
Hold Temp
Set Current
Day/Time
Wake
Leave
Return Sleep
Day
Heat/Cool
Settings
Daylight
Time
Copy
Wake
Room
System
Fan
Heat
Auto
AM
DST
Tue
M20243
Filter
Days
M20244
Filter
Days
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.
M14559
Aux Ht
Set Day/TimeSet Program
Mon
Wake Leave Return Sleep
Ou
t
door
Room
Filter
Wait
F
Fan
Em H
eat
On
A
u
t
o
O
f
f
C
oo
l
A
u
t
o
AM
PM
Hold for
Heat
Cool
Repl Batt
Recovery
DST
TueWedThu Fri Sat Sun
Days
Temporary Setting
Em Ht
M14612