Part 2 Functions & Controls

2. BasicModeControls

2.1 Cooling Mode

+0.5°C(1°F)

 

 

 

 

Thermo ON

Setting

 

 

 

 

 

Temp.

 

 

 

 

 

-0.5°C(-1°F)

 

 

 

 

Thermo OFF

 

 

 

 

 

INV. Comp.

High

Low

Comp. OFF

High

Low

Frequency

 

 

 

 

 

Operating frequency of compressor depends on the load condition, like the difference between the room temp. and the set temp., frequency restrictions.

If the compressor operates at some frequency, the operating frequency of compressor cannot be changed within 30 seconds. ( not emergency conditions)

Compressor turned off when

-intake air temperature is in between ±0.5°C(±1°F) of the setting temp. limit for three minutes continuously.

-intake air temperature reaches below 1.0°C(2°F) of the temperature of setting temp..

Compressors two minutes time delay.

-After compressor off, the compressor can restart minimum 2 minutes later.

2.2 Heating Mode Heatpump Only

5˚C(9˚F) Thermo OFF

2˚C(3.6˚F) Thermo ON

Setting

Temp.

INV. Comp.

High

Low

Comp. OFF

High

Low Comp. OFF

Frequency

 

 

 

 

 

Operating frequency of compressor depend on the load condition, The difference between the room temp. and set temp., frequency restrictions.

If compressor operates at some frequency, the operating frequency of compressor cannot be changed within 30 sec- onds.

Condition of compressor turned off

-When intake air temperature reaches +5°C(9°F) above the setting temperature.

Condition of compressor turned on

-When intake air temperature reaches +2°C(3.6°F) above the setting temperature.

*Condition of indoor fan turned off

-While in compressor on : indoor pipe temp. < 20°C(68°F)

-While in compressor off : indoor pipe temp. < 30°C(86°F)

While in defrost control, the indoor and outdoor fans are turned off.

Compressor 2minutes delay

-After compressor off, the compressor can restart minimum 2 minutes later.

-9 -

Only for training and service purposes

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Heat Controller VMC12SB-1/VMH12SB-1, VMC09SB-1/VMH09SB-1 Basic Mode Controls, Cooling Mode, Heating Mode Heatpump Only

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