Maytag VMH 09/12/18/24 See chart below for operating conditions, Operating Conditions, Mode, Temp

VMH Inverter Mini-Split OWNER’S MANUAL Heat Controller, Inc.

NOTE: This manual does not include Remote Controller Operations, see the <<Remote Controller Manual>> packaged with the unit for details.

See chart below for operating conditions:

Mode	Temp	Ambient Operating Conditions
		Fahrenheit	Celsius
Cooling	Outdoor	5 to 122	-15 to 50
	Indoor	=62.6	=17
Heating	Outdoor	5 to 93.2	-15 to 34
	Indoor	=86	=30
Dehumidification	Outdoor	5 to 122	-5 to 50
	Indoor	>50	>10

Operating Conditions:

When cooling is needed year round, including when outdoor temperatures are apt to fall below freezing, our V Series inverter driven ductless mini-split systems will continue to work, as they come with factory installed low ambient controls. 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 environments 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.

Manual Operation:

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

NOTE: The unit must be turned off before operating the manual control button. If the unit operational, continue press- ing the manual control button until the unit is off.

1.Grasp both sides of the panel and pull it down. The panel opens upward to an angle of 15°. Push the panel upward and then lift it up.

2.One press of the manual control button will lead to the forced AUTO operation. If the button is pressed twice within five seconds, the unit will operate under forced COOL operation. Press the button a third time to stop the manual operation.

3.Close the panel firmly to its original position.

CAUTION:

•This button is used for testing purposes only.

•To restore the remote controller to control the unit, siply

begin to operate the unit with the remote controller.

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