Diagnostic Maintenance & Status Report

The Diagnostic Maintenance & Status Report provides detailed information on PTAC control operation and operational status includ- ing present modes, failures, airflow restriction warnings, operating temperatures, and past failures. The lower right hand dot on the center display flashes in this mode. In some cases the green LED located in the lower left hand corner of the touchpad below the OFF key will also be lit. This Green LED “Status Light“ only illuminates if there is an status code that has been activated and should be reviewed. In most cases, this light indicates that the indoor room filter is dirty should be cleaned or replaced. NOTE: Dirty filters cause the unit to consume more energy than normally needed to condition a room. Once the filter has been cleaned or replaced, the LED should go out. If the LED is still illuminated after the filter has been cleaned, activate the Diagnostic and Status mode to view

any active codes. The unit may need additional cleaning or maintenance of the evaporator or condenser coils. Please perform this

step before calling a servicer. A servicer should be called only if cleaning the filter or coils does not clear the status code or the code indicates that servicer should be called.

DIAGNOSTIC STATUS REPORT MODE.

To enter Diagnostic Status Report mode, press and hold the up and down arrows and, while holding, quickly press the

COOL key

twice.

ACTIVE FAILURES.

•If there are no active failures or lockouts, the display will show a double dash, “- -”. If there is a code listed, see the unit “Diag- nostic Codes” chart for a list of definitions.

OPERATING TEMPERATURES.

•If not in Diagnostic Status Report Mode, enter as instructed above and press the Fan Speed key.

•If already in Diagnostic Status Report mode, press the Fan Speed key. The display will show the temperature of the de- sired set point, SP; the temperature at the wireless thermostat, rL; the indoor ambient temperature behind the filter, IA; the indoor coil temperature, IC; the indoor discharge air temperature, Id; the outdoor coil temperature, OC; the outdoor ambient tempera- ture, OA; and the spare probe temperature, IH. If any of the probes are not populated the display will show the corresponding failure code.

PAST FAILURE LOG

•If not in Diagnostic Status Report Mode, enter as instructed above and press the Fan Speed key twice.

•If already in Diagnostic Status Report mode, press the Fan Speed key. While the display is showing operating tempera-

tures, the last 10 failure codes active or past can be requested by pressing the Fan Speed key again. The codes are dis- played last entry first followed subsequently by each preceding code.

Note that modes F1 and Fd are also displayed in the normal control operation (see “Diagnostic Codes” chart).

To exit Diagnostic Status Report mode, press the OFF key.

EKTC, EKTH specifications

The Heat Controller EKTH and EKTC models are advanced heating solutions designed to provide energy-efficient climate control for residential and commercial spaces. These heat pumps combine sophisticated technology with user-friendly features to create a comfortable environment regardless of the outside temperature.

One of the standout features of both the EKTH and EKTC units is their inverter technology. This technology allows the compressor to operate at variable speeds, adjusting its output according to the current heating requirements. As a result, these systems provide consistent heating while consuming less energy compared to traditional fixed-speed units. The inverter technology not only enhances efficiency but also minimizes noise levels, making these heat controllers suitable for quiet environments.

Another significant characteristic of the EKTH and EKTC models is their all-weather performance. These heat pumps are engineered to perform effectively in a wide range of temperatures, ensuring reliable heating even in extremely cold conditions. With advanced defrost technology, these units can operate efficiently without freezing, maintaining optimal performance year-round.

User convenience is also a priority with the EKTH and EKTC systems. Both models feature intuitive digital controls that enable users to set their desired temperature comfortably. Additionally, many versions include Wi-Fi connectivity, allowing for remote access and control through a smartphone app. This feature is ideal for individuals seeking to monitor or adjust their heating systems while away from home.

Energy efficiency is a key aspect of the EKTH and EKTC heat controllers. They are designed with high Seasonal Energy Efficiency Ratios (SEER) and Heating Seasonal Performance Factors (HSPF), which indicate their effectiveness in converting energy into heated air. Energy Star certification is often achieved by these models, making them attractive options for energy-conscious consumers looking to reduce their carbon footprint.

With a compact design, the EKTH and EKTC units can be easily integrated into various settings without taking up much space, allowing for flexible installation options. The sleek aesthetic also ensures that they blend seamlessly with interior decor.

In summary, the Heat Controller EKTH and EKTC models represent a cutting-edge solution to heating needs. They combine inverter technology, all-weather performance, user-friendly features, and high energy efficiency to provide reliable and comfortable heating solutions for any environment. Whether for a home or a commercial space, these heat pumps deliver quality and convenience in climate control.