Heat Controller SMA/SMH 12 Features and Functions, See chart below for operating conditions, Mode

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Features and Functions:

SMA/SMH

OWNER’S MANUAL

Heat Controller, Inc.

Features and Functions:

Low Ambient Operation and Crank Case Heater Feature:

When cooling is needed year round, including when outdoor temperatures are apt to fall below freezing, our S Series ductless mini-split systems will continue to work, as they come with factory installed low ambient con- trols. The low ambient feature works by regulating the head pressure by varying the amount of air flow through the condenser, which helps to prevent evaporator freeze ups and low pressure problems due to low ambient outdoor temperatures. Low ambient operation is a great feature for temperature/humidity sensitive environ- ments or applications such as server/computer rooms, supermarkets, restaurants, or cooling tower fans. Additionally, a crank case heater is required and factory installed, as it is needed for use with the low ambient controls. The crank case heater minimizes liquid refrigerant migration to the compressor when the compressor is not operating and helps to keep the compressor oil warm enough so that it remains fluid to prevent slugging. Crank case heaters also assist to greatly reduce heat loss to ambient air. Together, the lower ambient feature combined with the factory installed crank case heater, will not only allow the air conditioner to cool year round, but will also prevent compressor failure in low ambient conditions.

See chart below for operating conditions:

Mode

Temp
Ambient Operating Conditions

Fahrenheit

Celsius

 

 

Cooling

Outdoor

5 to 109.4

-15 to 43

Indoor

=62.6

=17

 

Heating

Outdoor

5 to 75.2

-15 to 24

Indoor

=86

=30

 

Dehumidification

Outdoor

23 to 109.4

-5 to 43

Indoor

>17

>62.6

 

Manual Operation

Manual operation can be used temporarily to run the air conditioner without using the remote controller. This fea- ture can also be used to test the unit during installation and troubleshooting by an authorized service technician.

1 Open and lift the front panel up until it stops and makes a clicking sound.

2 By pressing the manual control button, the unit will be placed into forced AUTO operation mode.

3 Close the panel firmly to its original position.

Caution

•Once you push the manual button, the operation mode will change in the following order:

Low Ambient Operation and Crank Case Heater Feature: AUTO See chart below for operating conditions: COOLMode OFF Temp

•By pushing the button twice, the unit will be placed into forced COOL mode, which can be used for testing purposes.

•By pushing the button a third time, the air conditioner will stop operating and turn off.

• To restore use of the remote controller to control the unit, simply begin to operate the unit with the remote controller.

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Contents SMA/SMH 09/12/18/24 Version C Single Zone Ductless Mini-Split System A/C and Heat PumpCare and Maintenance Table of ContentsSafety Precautions Troubleshooting TipsNever do this Always do this SMA/SMHAUTO indicator DEFROST indicator for cooling & heating models only3 TEMPERATURE indicator 4 OPERATION /POWER indicator5 TIMER indicator Low Ambient Operation and Crank Case Heater Feature Features and FunctionsSee chart below for operating conditions ModeDRY MODE/Dehumidifying operation AUTO operationECONOMY/SLEEP operation Optimal Usage TipsAirflow Direction Control To set the horizontal air flow direction left-rightAnti-cold air heat pump models only Typical Operational Occurrences1. Protection of the air conditioner. Compressor protection Defrosting Cooling and heating models only9. Auto-restart function 7. Condensation8. Heating mode heat pump models only 10. Electrical interferenceCleaning the Air Filter Care and MaintenanceCleaning the Grille, Case and Remote Controller Continued on next pagePage Possible Cause/Things to Check Troubleshooting TipsSymptoms What should be done?
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SMA/SMH 24, SMA/SMH 12, SMH 24, SMH 18, SMA/SMH 18 specifications

The Heat Controller SMA/SMH series, encompassing models SMA/SMH 09/12, SMH 12, SMH 09, and SMA 12, is designed to deliver efficient and sustainable climate solutions for both residential and commercial spaces. These air conditioning units are well-regarded for their innovative technologies, energy efficiency, and user-friendly features, making them a popular choice for consumers seeking reliable heating and cooling options.

One of the defining characteristics of the SMA/SMH series is its advanced inverter technology. This feature allows the units to adjust their compressor speed in real-time based on the temperature needs, resulting in reduced energy consumption and more consistent indoor temperatures. With energy efficiency ratings often exceeding the standard benchmarks, these units help reduce electricity bills while minimizing environmental impact.

A significant aspect of the heat controllers is their versatile operation modes. The SMA/SMH series provides heating, cooling, and dehumidification modes, catering to various climatic conditions and user preferences. This flexibility ensures comfort in every season, making these units suitable for diverse environments, from hot summers to chilly winters.

User convenience is further enhanced by smart control options. Many models in the series are compatible with remote control systems and can be integrated into smart home networks, allowing users to adjust settings even when they're away from home. This feature provides an added layer of comfort and energy management, as users can effectively schedule operations to limit energy use during inactive hours.

Moreover, the series features a robust filtration system designed to improve indoor air quality. The filters trap dust, allergens, and pollutants, promoting a healthier living environment. Some models even include advanced options, such as activated carbon and HEPA filters, ensuring the air circulating within the space is clean and fresh.

Durability and aesthetic appeal also characterize the SMA/SMH series. The units are constructed with high-quality materials designed to withstand various weather conditions while maintaining their sleek, modern appearance. The compact design allows for flexible installation options, whether wall-mounted or on the floor, blending seamlessly with any interior decor.

In conclusion, the Heat Controller SMA/SMH 09/12, SMH 12, SMH 09, and SMA 12 models stand out for their energy efficiency, advanced technology, flexible operation modes, smart controls, and excellent air filtration. With their commitment to comfort and quality, these units are ideal for anyone seeking reliable climate control in their homes or businesses.
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