CACH/CAHH/CAHJ & CACH/CAHH/CAHK
Air Handlers
• Installation, Operation and Maintenance Manual •
P/N 240008108, Rev. G [07/08/10]
43
Configuration mode, the unit will run
heating operation as described under
Heat mode.
Set Time mode
Th
e clock is used by the 7-day programming
mode.
Th
e
1.
CLOCK butt on is used to enter
or exit the Set Time mode.
Th
e Set Time mode can be entered while
2.
the control is in any mode, including the
Off mode.
To enter the Set Time mode, press the
3.
CLOCK butt on for three (3) sec-
onds.
Pressing the PROGRA
M
4.
butt on will
advance to the next item.
Th
e order is (1) Day of week, (2) Hour
5.
and (3) Minute.
Th
e time of day and day of week can be
6.
changed using the UP or DOWN AR-
ROW butt ons.
When the
7.
CLOCK butt on is pressed
again or left idle for twenty (20) seconds,
the control will save the new sett ings and
return to the previous mode.
NOTICE
Th
e unit will not automatically adjust for
Day Light Savings time.
7-Day Programming mode
Th
e 7-day Programming mode is used to store
the sett ings for Pre-Program Run mode.
When the unit is in either the Off or On
1.
mode, the 7-Day Programming mode can
be entered by pressing the PROGRA
M
+
CLOCK butt ons simultane-
ously for three seconds.
W hen the PROGR AM
2.
+
CLOCK butt ons are pressed simultane-
ously again or left idle for twenty seconds,
the control will save the new sett ings and
return to the previous interface mode.
While in the 7-Day Programming mode,
3.
the words “7-DAY PROGRA
M” are dis-
played on the LCD.
Use the UP or DOWN ARROW butt ons
4.
to change the time, temperature or period
sett ings.
Use the
5.
CLOCK or PROGRAM
buttons to select the mode to be
changed.
Sett ings can be entered for:
6.
Day of week
a.
Period of day
b.
Hour
c.
Minute
d.
Cooling setpoint temperature
e.
Heating setpoint temperature
f.
Auto setpoint temperature.
g.
Quick Copy
Quick copy is a feature of the 7-Day Program-
ming mode. It is used to copy the sett ings of
any day to the rest of the week.
While in 7-Day Programming, select the day
to be copied. Th
en press the FAN + PRO-
GRA
M
butt ons simultaneously for three
seconds. Th
e selected day will be copied to
the rest of the week.
Manual Run mode
Th
is is the normal operating non Pre-Program
Run mode. Sett ings for temperature, mode
and fan speed are selected by the user and
will not change with the passing of time. Th
e
word “PROGRA
M” does NOT display on
the LCD.
Pre-Program Run mode
Th
is feature allows the setpoint temperature
to be changed according to the pre-program
setpoint and time of day sett ings. Th
e setpoint
and time sett ings are programmed into the
CACH/CAHH/CAHK Microprocessor Controller Operation
(continued)