Sequence of Operation – Unit Mounted key pad mode

Unit Mount Infrared

Control Operation

EMI Air Handlers are equipped with a unit mount, infrared compatible control pack- age. This user friendly, microprocessor control is designed to optimize system performance and protect the refrigeration system from unwanted short cycling and evaporator freeze-ups. Operation of the unit can be made by either the keypad on the unit or by using the optional hand held infrared controller.

For unit mounted key pad operation the control must be configured through the Configuration mode. Be sure to select Remote – OFF in the configuration menu. (See Configuration mode)

Note: When power is first applied to the control or after a power outage there is a three minute delay before the com- pressor or electric heat will energize. This is to protect the unit from short cy- cling due to loss of power.

On/Off

Pressing the “ON/OFF” button once will switch the unit either on or off. In the Off mode, the LCD will display the time of day and day of the week. In the On mode the LCD display will also display the room temperature and the mode of operation Cool, Heat, Auto (Auto changeover), Dry or Fan mode. While in the On mode, the set point temperature will display momen- tarily with the push of any button except the ON/OFF button.

Mode of operation

The “MODE” button allows the se- lection of the mode of operation, Cool, Heat, Auto changeover (ACO). Dry or Fan mode. In Fan mode either “HIGH” or “LOW” will be displayed on the LCD.

Fan Operation

The indoor unit utilizes a two-speed motor with three operational fan modes. The FAN button will allow the selection of

the desired fan setting in all modes except Dry mode. In Dry mode, the fan will oper- ate constantly at low speed. The LCD will indicate fan speed selection.

High and Low are constant fan settings. The fan will operate continuous regardless of set point or room temperatures. Auto mode is for cycling fan operation.

Auto Fan mode can only be selected if the unit is in Heat, Cool or Auto Change- over modes. In Auto Fan mode the fan will cycle with the call for Heat or Cool. Fan speed will be determined by the mi- croprocessor and speed adjustment will be made according to room and setpoint temperatures. The fan will switch to High speed when room temperature deviates by more than two degrees from setpoint. The fan will switch to Low speed if the devia- tion is one degree or less. When the room temperature reaches setpoint temperature the heat/cool call will then be dropped. The fan will stay on for an additional 60 sec. to purge unit of any residual energy.

If the Room Air Sampling feature has been enabled in the Configuration mode (see Configuration mode), after the fan has been off for the selected time, it will then cycle on for 60 seconds. The unit will circulate room air to remove any temper- ature stratification by the unit so the mi- croprocessor can determine an accurate room temperature. After the 60 second room air sample time has elapsed, and if the setpoint temperature remains satis- fied, the fan will cycle off.

When the unit is in Dry mode the fan speed will remain constant at Low speed. While the unit is in Fan mode, Auto is by- passed and only High or Low are available.

Louver operation

When the control is in the Off mode the louver will remain in the closed posi- tion. When the unit is turned on via the ON/ OFF button the louver will open and oper- ate according to the setting selected in the Louver Configuration mode.

To enter the Louver Configuration mode, press and hold the Fan/Louver button in for three seconds. This will enter the Louver Configuration mode and “Lou” will display on the LCD. Pressing the Up

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EMI S1C, WLHA manual On/Off, Mode of operation, Fan Operation, Louver operation
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WLHA, S1C specifications

The EMI S1C, also known as the WLHA, is a cutting-edge electronic device renowned for its advanced features and robust technologies. This innovative equipment caters to a wide range of applications, from multimedia processing to advanced communications. Its design showcases a seamless blend of functionality and performance, making it a preferred choice among professionals in various fields.

One of the standout characteristics of the EMI S1C is its high-performance processing capability. Equipped with a powerful multi-core processor, the device ensures rapid data processing and multitasking without compromising efficiency. This feature is particularly beneficial for applications requiring real-time data analysis and complex computational tasks.

The WLHA further distinguishes itself through its exceptional connectivity options. It supports multiple input and output standards, including USB, HDMI, and Ethernet, facilitating seamless integration with other devices. This flexibility allows users to connect a variety of peripherals and streamline workflows, enhancing overall productivity.

In terms of user experience, the EMI S1C places a strong emphasis on intuitive interaction. It features a user-friendly interface that simplifies navigation and accessibility. The touchscreen display provides responsive feedback, enabling users to operate the device effortlessly, even in high-pressure scenarios.

Another prominent aspect of the EMI S1C is its advanced power management system. The device is designed to optimize energy consumption without sacrificing performance. This sustainability feature is not only environmentally friendly but also crucial for mobile applications, where battery life is a significant consideration.

Furthermore, the WLHA's robust build quality ensures durability and resilience in diverse environments. The device is constructed with high-grade materials that withstand wear and tear, making it ideal for use in industrial settings or field operations where ruggedness is essential.

Security is also at the forefront of the EMI S1C's design. The device incorporates advanced encryption technologies and secure boot mechanisms to protect sensitive data from unauthorized access. This commitment to security is particularly relevant in today's digital landscape, where data breaches and cyber threats are prevalent.

In summary, the EMI S1C, WLHA is a versatile and powerful electronic device that excels in various domains. Its combination of high-performance processing, extensive connectivity, user-friendly interface, energy efficiency, durability, and robust security features makes it a top choice for professionals seeking reliability and innovation in their tools. Whether in multimedia, telecommunications, or industrial applications, the WLHA is poised to meet the demands of modern technology users effectively.
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