Typical Operational Occurrences

Heat Controller, Inc.

OWNER’S MANUAL

SMA/SMH

The following events may occur during normal operation.

1. Protection of the air conditioner. Compressor protection

•If the unit is stopped and then immediately restarted again, the compressor will not operate for about

3 minutes in order to protect the compressor.

Anti-cold air (heat pump models only)

•The unit is designed not to blow cold air in HEAT mode, when the indoor heat exchanger is in one of the following three situations and the set temperature has not been reached.

A)When heating has just starting.

B)Defrosting is occurring

C)Low temperature heating is occurring

Defrosting (Cooling and heating models only)

•The indoor or outdoor fan stop running when defrosting (heat pump models only).

•Frost may accumulate on the outdoor unit during heat cycle when outdoor temperature is low and hu- midity is high, resulting in lower heating efficiency of the air conditioner.

•During this condition, air conditioner will stop the heating operation and start defrosting automatically.

•Defrost time may vary from 4 to 10 minutes according to the outdoor temperature and the amount of frost buildup on the outdoor unit.

2.Mist or steam are being emitted

•A white mist may emit from the indoor unit due to a large temperature difference between air inlet and air outlet in COOL mode in an indoor environment that has a high relative humidity.

•A white mist may emit due to moisture generated from the defrosting process when the air conditioner restarts in HEAT mode operation after defrosting.

3.Typical sounds

•You may hear a low hissing sound when the compressor is running or has just stopped running. This sound is the sound of the refrigerant flowing or coming to a stop.

•You can also hear a low “squeak” sound when the compressor is running or has just stopped running. This is caused by heat expansion and cold contraction of the plastic parts in the unit when the tempera- ture is changing.

•A noise may be heard due to louver restoring its original position when power is first turned on.

•A sizzling sound may be heard occasionally when the unit is defrosting.

4.Dust is blown out from the indoor unit

•This is a normal condition when the air conditioner has not been used for a long time or during first use of the unit and an accumulation of dust has formed on the unit’s outlet. Cleaning dust off of the unit before operation will prevent this.

5.A peculiar smell comes out from the indoor unit

•This is caused by the indoor unit giving off smells permeated from building material, from furniture, or smoke. A burning smell could mean there is something wrong with the unit. Power off the unit and call an authorized servicer.

6.Operating mode changes to FAN ONLY mode

•When the indoor temperature reaches the temperature set point on air conditioner, the compressor will stop automatically, and the air conditioner mode changes to FAN only mode. The compressor will start again when the indoor temperature rises above the set point in the COOL mode or falls below the set point in the HEAT mode (heat pump only models).

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.