Auto Mode - Daewoo DSB-071AH Service Manual

Frost Prevention of Indoor Unit
When the unit operates at low ambient temperature, frost may appear on the Evaporator. When the indoor coil
temperature is lower than 0°C at the end of 10 minutes of continuous compressor operation from the start, the
microcomputer of the unit stops the compressor to protect the unit from the frost. The control procedure for
indoor coil freeze protection.
1) The compressor and outdoor fan turn off.
2) Indoor fan operates according to user set speed.
3) The normal operation returns when the indoor coil
temperature is higher than 7°C or equal to 7°C.
3 min. Time Delay of Compressor
In normal operation, there is a time delay of three minutes between turn off and turning back on including initial
power up.

Auto Mode

(1) In Auto Mode
After the indoor fan is operated for 20 seconds in the Auto Mode the unit will operate automatically by selecting
operating Mode according to the room temperature
ROOM TEMPERATURE
>
DT-2°C
≤ ≤
DT-2°C RT
<
DT+3°C
(2) Selecting Operating Mode Again
Room temperature meets desired temperature and the compressor stops running over 30 minutes, then the unit
selects operating Mode again.
RT
DT+3°C
RT
Compressor and
Outdoor Fan
Indoor Fan
OPERATING MODE
Heating
Dehumidifier
Cooling
35
ON
OFF
-1°C
(Indoor coil temperature)
(RT: Room temperature)
FLAP POSITION
Heating Position
Cooling Position
Cooling Position
ON
Set speed
+7°C