Typical Operational Occurrences

Heat Controller, Inc.

OWNER’S MANUAL

VMH Inverter Mini-Split

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 humidity 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 condi- tioner 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 run- ning. This is caused by heat expansion and cold contraction of the plastic parts in the unit when the temperature 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).

7.Condensation

•Dripping water may generate on the surface of the indoor unit when cooling in relatively high humid- ity. Adjust the vertical louver to the maximum air outlet position and select HIGH fan speed. NOTE: Water could drop onto the floor or objects below the indoor unit.

VMH 09/12/18/24 specifications

The Maytag VMH series, including models VMH 09, 12, 18, and 24, represents a distinctive blend of performance and innovation in the realm of heating and cooling solutions. Designed for both residential and commercial applications, these models emphasize efficiency, durability, and user-friendly features.

One of the key highlights of the VMH series is its advanced inverter technology, which allows the units to adjust their compressor speed according to the heating or cooling demands of the environment. This feature ensures optimal energy consumption, significantly reducing utility bills compared to conventional systems that operate at a fixed speed. The inverter technology also results in quieter operation, enhancing comfort whether in a home or office setting.

The VMH models come equipped with high SEER (Seasonal Energy Efficiency Ratio) ratings, which mark them as some of the most energy-efficient options available. This efficiency is not just eco-friendly; it also means that users can expect long-term savings. In addition, the units feature R-410A refrigerant, known for its low environmental impact and effectiveness in providing superior cooling and heating performance.

Ease of use is another hallmark of the VMH series. Each model is designed with a smart control panel, allowing users to easily adjust settings, set timers, and monitor energy usage. Some models also offer compatibility with smart home systems, enabling control via smartphones or tablets for optimal convenience.

Durability is a critical characteristic of the Maytag VMH series. Engineered with robust materials and a corrosion-resistant finish, these units can withstand diverse weather conditions, making them ideal for various climates. The self-diagnostic tool integrated into the units ensures that maintenance and troubleshooting processes are simplified, promoting longevity and reliability.

In terms of installation, the VMH models are versatile. They can be mounted in various configurations to suit different spaces, whether it be wall, ceiling, or floor-mounted installations. This adaptability, combined with a sleek design, allows these units to blend seamlessly into any interior aesthetic.

Overall, the Maytag VMH 09, 12, 18, and 24 models stand out in the market for their combination of cutting-edge technology, energy efficiency, and user-centric features, making them an excellent choice for individuals and businesses seeking reliable heating and cooling systems.

Maytag VMH 09/12/18/24 Typical Operational Occurrences, Anti-cold air heat pump models only

Models: VMH 09/12/18/24

VMH Inverter Mini-Split