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Heat Sentinel Mode
To prevent the room from overheating (Zoneline
must be powered), cooling is energized when
the indoor temperature is sensed to be 85°F to
maintain room temperature below 85°F in any
operation mode except heating mode. The
Heat Sentinel mode is disabled when the room
temperature reaches 80°F. The indoor fan runs
at high speed. An auxiliary set mode is provided
to enable the heat sentinel mode. If the auxiliary
mode is in the OFF position, the heat sentinel
function is disabled. The factory default of the
heat sentinel mode is OFF.
Freeze Sentinel Mode
To prevent the room from freezing, the electric
heater is energized to maintain the room
temperature above 41°F regardless of any
operation mode.
The freeze sentinel mode is disabled when the
room temperature reaches 46°F.
The indoor fan runs at high speed. An auxiliary
set mode is provided to enable the freeze
sentinel mode. If the auxiliary mode is in the OFF
position, the freeze sentinel function is disabled.
The factory default of the mode is ON.
Control Lock Out
The control panel can be locked out from the user
being able to change the operating mode of the
Zoneline.
While the Zoneline is operating in the desired
mode, press and hold the "Display On/Off" button
for 10 seconds to lock the control to this setting.
The display will flash the mode LED and
temperature and then go dormant. Any key
press after this will result in the mode LED
and temperature to flash 5 times and then go
dormant. Pressing the "Display on/off" button for
10 seconds will unlock the control and resume
normal operation.
The Zoneline will come back on in the locked
mode if power is lost and restored.
Auxiliary Controls
The red auxiliary set (or Aux Set) button is
located behind the room cabinet, below the user
interface.
There are ten different modes that can be set
using the auxiliary set button.
To change modes, press the red auxiliary set
button. "AU" appears on the display. Press the
MODE button on the control until the first digit
in the display shows the number corresponding
to the desired mode being changed. Press the
up pad (+) or down pad (-) to make the HEAT or
COOL selection where applicable. Press the red
auxiliary set button to confirm the selections once
all changes have been made.
– 23 –
Red Aux
Set Button
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