Heat Controller EKTC07-1G, Owner'S Manual, Page: 4 / 18

Packaged Terminal A/C
OwnEr’s Manual
Heat Controller, Inc.
3
This unit has many exciting features which 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.
• sElf DIaGnOsITICs —The unit has an onboard computer that utilizes real-
time diagnostics to prolong the life of your unit. There is an LED indicator on
the control board located 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 the 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—Status LED Indicator Definitions for further details .
• auTO rEsTarT —If power is lost, all of the control settings (setpoint, mode,
fan speed, on/off and configuration) are stored. So when power is restored, the unit will start back up in the mode (and con-
figuration) it was in when power was lost.
• QuIET OPEraTIOn —The unit has 2 fan motors and a tangential blower wheel to reduce noise. The indoor fan will always run
a minimum of 10 seconds before the compressor, to help reduce any compressor starting noise.
• ranDOM COMPrEssOr rEsTarT —To help prevent power surges after a power outage (from many of your PTAC/HPs starting
at the same time), the compressor is equipped with a 2:45 to 3:15 minute random restart delay feature.Whenever the unit is
plugged in, or power has been restarted, a random compressor restart will occur between the random restart time frame.
• 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 —The unit will 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), and while power is supplied to the unit, if the unit senses temperature below 40°F, the fan motor and
electric heater are turned on and will warm the room to 50°F. 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 (ap-
prox. 35°F) and the unit can no longer effectively heat with the compressor, the unit will automatically switch to electric heat-
ing. The unit will then heat with electric heat until the outside temperature rises enough (approx. 40°F), so the compressor
can be used to effectively heat again.
• auTOMaTIC QuICk warM-uP (fOr HEaT PuMP MODEls OnlY) —If the room temperature falls to 5°F 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 SETPOINT
DOWN. It 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 which 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 —This unit can be optimized to specific applications by configuring
the fan to run in a continuous mode or to 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 after compressor or electric heater stops in order blow off
any residual heat or cool left on coil. In continues mode, the fan remains on at all times even when the compressor is off.
Table 6—STATUS LED Indicator Definitions
1 Indoor air temp sensor open/short 7 Segment display ‘F1’, with STATUS light flash 1 time,off 2 seconds
2 Indoor coil sensor open/short 7 Segment display ‘F2’, with STATUS light flash 2 times and off 2 seconds
3 Outdoor coil sensor open/short 7 Segment display ‘F4’, with STATUS light flash 4 times and off 2 seconds
4 Freeze Guard protection 7 Segment display ‘FP’
5 Thermostat wiring error STATUS light flash 9 times and off 3 sec, repeat
6 Indoor coil high temp protection STATUS light flash 8 times and off 3 sec, repeat
7 Defrost (heat pump type) STATUS light flash 7 times and off 3 sec, repeat
8 Outdoor coil high temp protection STATUS light flash 6 times and off 3 sec, repeat
9 Indoor coil freeze protection STATUS light flash 5 times and off 3 sec, repeat
nOTE
: When status light is flashing, it will be ON for 0.5 seconds and OFF for another 0.5 seconds.
UNIT FEATURES
Fig. 2