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3
• Automatic freeze protection - Whenever power is sup-
plied to the unit and the master switch is in the ON posi-
tion, automatic freeze protection is active. If the unit
senses temperature below 40°F, the fan motor and elec-
tric strip heat are turned on. Freeze protection can be
turned off, if required.
• Random restart delay - To help eliminate power surges
after a power outage, the unit is equipped with a two to
four minute random restart delay feature. Whenever the
unit is plugged in with the master switch turned on and
the mode switch set in the cool or heat mode, a random
restart will occur. A random restart condition can be
avoided by setting the mode switch in the fan only or off
position before applying power to the unit.
• Fuse holder - On all 265 volt units, fuse holders are fac-
tory installed. Check for blown fuse if unit does not oper-
ate. Fuse holder is located behind the front. Replacement
fuses may be purchased from the Parts Department or
contact your sales representative for part numbers.
FUSE
HOLDERS
Control Panel
• Indication LEDs - The touch pad has LEDs that correspond
to fan operation and to indicate unit status. The LEDs
next to the selections OFF, COOL, and HEAT indicate which
operational mode is active. The LED located in the lower
left corner is a status LED. This LED indicates the status of
the unit. See Diagnostic Maintenance & Status Report sec-
tion for further details.
7 Button Touch Pad With Display
• Load shedding - When input terminals have been config-
ured for load shedding operations. If at any time a switch
is closed between the IN1 and COM or IN2 and COM termi-
nals as configured, the compressor and electric heater
will lockout until the switch is opened.
NOTE: The PTAC Wire Harness Kit (PWHK01G70) is required when
using or load shedding option.
• Transfer fan - A daughter board allows for an external
(transfer) fan connection. A user-supplied relay is required
and, depending upon the type used, an approved external
transformer kit may be required for installation.
• Front mounting hole - A mounting hole location is pro-
vided to give the owner the option of securing the front to
the chassis. The mounting hole must be drilled at the
dimple indicating the correct location below a louver. The
owner must supply one 1/2 inch long #8 sheet metal screw
per unit. The screw must be removed before the front can
be removed.
Front Mounting Screw accessed
through louvers.
Chassis Front
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