32
PN 20009722 REV F, [08/01/2020]
CAW INFRARED CONTROL SYSTEM - OPERATION
Clean Filter Alarm
Cassette controller indicates when scheduled filter cleaning
is required by flashing Timer/Alarm LED. During normal
operation, microprocessor keeps track of units run time.
1.
Timer/Alarm LED flashes four times to indicate filter
needs to be cleaned.
2.
Clean filter time is selected through Configuration
mode.
3.
Available settings are 250, 500, 750, 1000, and 1250
hours. Default in Bold.
4.
If coil freeze condition is detected four times within 24-
hour period, Clean Filter Alarm appears.
After filter maintenance has been performed, press Mode
& Fan button for three (3) seconds. Control responds with
beep to indicate timer has been reset.
Sleep Timer
Sleep timer feature allows user to switch unit off using
preset timer. When control is in On mode, pressing TIMER
button enters or exits Sleep.
Timer Mode (IR Hand Held Remote or Wall
Thermostat).
When in Sleep Timer mode, word “TIMER” appears on LCD
display. Unit continues to operate for thirty (30), minutes,
then switches off. No adjustment.
To turn unit back on, press POWER button momentarily.
Configure infrared handheld remote to wall mounted
remote thermostat
Wall mounted remote thermostat operation configure
control through DIP switches located on control board
located in control box.
• Set DIP switch #4 to YES. See Table 3, Page 24.
• When set to “Wall mounted remote thermostat mode”
control will not accept commands from infrared remote
control.
• Filter check timer defaults to 1000 Hrs.
Fan Operation
Cassette unit utilizes 2 speed motor. In wall mounted
remote thermostat controller operation, fan speed selection
can be made through Fan DIP switch. See Pages 23 and
24.
• DIP switch #3 set to HIGH, fan speed is set to High.
• DIP switch #3 set to LOW, fan speed is set to Low.
• See Table 3, Page 25 for other available DIP switch
selections.
Clean Filter Alarm (Wall Thermostat Mode) CAW
Cassette controller indicates when scheduled filter cleaning
is required by flashing Timer/Alarm LED.
During normal operation, microprocessor keeps track of
unit’s run time.
•
When clean filter time has elapsed, Timer/Alarm LED
flashes four times to indicate filter needs to be cleaned.
•
Clean filter time is selected through configuration menu.
Available settings are 250, 500, 750, 1000, and 1250
hours. Default in Bold.
• If coil freeze condition is detected four times within
24-hour period, Clean Filter Alarm appears on cassette
display.
After filter maintenance has been performed, press Mode
and Fan Buttons for three (3) seconds. Control responds
with beep to indicate timer has been reset.
Minimum Run Time
Minimum on-time prevents cooling or heat source from
cycling off prematurely. Minimum on-time for cooling and
electric heat is two (2) minutes.
LCD Back Light
LCD display can be illuminated using LCD back light
feature. Selectable settings are Off, On, and Intermittent,
and are set in Configuration.
•
Selecting OFF, backlight remains off.
• Selecting ON, backlight remains on at all times,
including while in Off mode interface.
• Intermittent, backlight remains ON for 10 seconds after
the push of any button while control is in On mode or
after push of ON/OFF button while in Off mode interface.
Drain Pan Sensor
Drain pan sensors monitor condensate level in each units
drain pans. Should water in either pan reach critical level,
monitor automatically signals main control unit.
Microprocessor will switch off the water valve unit for
minimum of three minutes until fault condition has been
cleared, to prevent further condensate production. Fault
code, E02, then flashes on controller’s LCD display and
automatically resets once fault condition is cleared.
Annunciation
•
Controller beeps, providing audio feedback confirming
microprocessor has received its commands.
•
Annunciation feature must be activated in configuration.
Selections are OFF and ON.
•
OFF - annunciation remains off.
• ON - annunciation beeps with push of any button in On
mode or with push of ON/OFF button while in off mode.
Memory Backup
Control retains all settings, including mode of operation in
event of power failure.
When power is restored, control returns to mode of
operation settings prior to power failure, after three (3)
minute time delay.
