Operating instructions

4
UNIT FEATURES
Fig. 2 – E-TAC Front Panel
are different than those found on standard PTAC
models. The owner must be familiar with these
features in order to fully understand the operation and
capability of the unit.
computer that utilizes real time diagnostics to prolong
the life of your unit. There is an LED indicator on the
control board, behind the front panel, that will flash
an error code if the unit has detected some kind of
fault condition. In many cases, the unit will
automatically clear th
e fault condition and continue
operating with no interruption. In some cases, the
condition cannot be cleared and the unit will require
service. In those cases, an “Fx” failure mode will be
displayed on the digital display. For a detailed list of
all error codes and “Fx” conditions, see Table 6 --
S tatus LED Indicator D efinitions for further details.
power is lost, all of the control settings (setpoint,
mode, fan speed, on/off and configuration) are
remembered. So when power is
restored, the unit will
start back up in the mode (and configuration) it was
in, when power was lost.
• Random Compressor restart -- To help prevent
power surges after a power outage (from many of
your E-TACs starting at the same time), the
compressor is equipped with a 2:45 to 3:15 random
restart delay feature. Whenever the unit is plugged in,
or power has been restarted, a rand
om compressor
restart will occur.
• Compressor Protection -- To prevent short cycling
of the compressor and maximize
it’s life, there is a
random start--up delay of 3 minutes on the
compressor and a minimum compressor run time of 3
minutes.
• Automatic room freeze protection – automatically
will keep the temperature in the room from getting
too cold, where water pipes might freeze. If the unit
is configured for the freeze protection feature to be
active (which is the default condition), then whenever
power is supplied to the unit, if the unit senses
temperature below 40°F (4.4°C), the fan motor and
electri
c heater are turned on and will warm the room
to 50° F (10°C). If Freeze protection is not required,
change the configuration switch to turn the feature off
(see section on unit configuration).
• Automatic defrost protection (for heat pump
models only) – When the outdoor temperature gets
too cold (approx. 40°F / 4.4°C) and the unit can no
longer effectively heat wit
h the compressor, the unit
will automatically switch to electric heating. The unit
will then heat with electric h
eat until the outside
temperature rises enough (approx. 40°F / 4.4°C), so
the compressor can be used again.
• Automatic Quick Warm--up (for heat pump
models only) -- If the room temperature falls to 5°F
(2.8°C) below the set point temperature, the reverse
cycle heat is shut off and the electric strip heat is
turned on for one cycle, until heating is satisfied.
• LED Indicator’s and Buttons -- The touch pad has
buttons for MODE, FAN SPEED, ON/OFF,
SETPOINT UP and SETPOIN
T DOWN. I
t also has
LEDs that correspond to the mode, fan speed and
setpoint operation, to indicate the unit’s status. The
LEDs below the mode button, FAN, COOL, and
HEAT, indicate what operating mode is active. The
LEDs below the Fan button, Low, Med and Hi,
indicate the fan speed that is selected. The LED
located in the lower right corner is the unit On/Off
status LED. If the unit is in ON mode, the LED will
be green. If the unit is OFF, the LED will be red.
• Configure Fan to Optimize Selected Application
–
Unit can be optimized to selected application by
configuring
the fan to run in continuous mode or cycle
on and off with the compressor and electric heater (can
be different for both heating and cooling modes). In
cycle mode, fan will continue to run 60 seconds after
compressor or electric heater stops in order blow off
any residual heat or cool left on coil.
• Dry Mode – will help to manage and reduce the
humidity in the room, making it more comfortable. In
DRY mode, the unit will modulate cooling mode at
low fan speed until the room temperature is 4 deg. F
below the room temperature setting regardless of fan
mode selection. Dry mode should not be considered a
substitute for a stand alone dehumidifier.
• Memory – Your E-TAC unit also has memory. If
This E-TAC has many exciting features which
• Premium Sound – Your Premium E-TAC is also the
quietest PTAC ever. Not only does it have 2 fan
motors and a tangential blower wheel for optimum
sound, the indoor fan will always run a minimum of 10
seconds before the compressor, to help reduce any
compressor starting noise.
• Intelligence – Your E-TAC unit has an on board