Basic Mode Controls | Heat Controller VMC12SB-1/VMH12SB-1 guide

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
					Thermo OFF
INV. Comp.	High	Low	Comp. OFF	High	Low
Frequency	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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