hecht 3913 - Filter Installation; Operating Modes and Settings; Starting and Stopping; Mode and Temperature Adjustment

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POWER ON/OFF
1. Press the ON / OFF soft button to start the unit automatically.
If the ambient temperature is
• higher than 22 °C (72 °F), the air conditioner will operate in Cooling mode.
• higher than 20 °C (68 °F) but less than or equal to 23 °C (74 °F), the air conditioner will
operate in Fan mode.
• below 20 °C (68 °F), the air conditioner will operate in Heating mode.
2. The auto-select indicator lights up. The display shows the ambient temperature. The displayed
temperature range is from 0 °C to 50 °C (32 °F - 122 °F).
3. 3. To turn the unit off, press the ON / OFF button again.
MODE / FUNCTION SETTINGS
Press the MODE button to select the desired operating mode: Automatic, Cooling, Fan, Heating
or Drying. The selected mode indicator lights up.
The preset air conditioning temperature is: 24 °C (75 °F) for cooling, 20 °C (68 °F) for heating.
TEMPERATURE SETTING
• Press the „temperature increase" or "temperature decrease“ button to set the desired temperature.
• The display shows the temperature set by pressing the "temperature increase" or "temperature
decrease" button, otherwise the display always shows the ambient temperature.
• When operating in HEAT mode, the ambient warm air is recycled and utilized to heat the area.
The Exhaust Pipe must be fitted firmly to exhaust the cold air out of the heated area.
• Continuous drain is compulsory while the unit is in heat mode (see below).
• Working range for heating function is 7 - 25°C (45 - 77°F). The unit may not work
properly in temperatures out of this range.
VENTILATION SPEED SETTING
• Press the SPEED button to select the desired ventilation speed, high or low. At this point,
the high or low ventilation speed indicator lights-up.
• If the unit is in AUTO mode, the ventilation speed will be selected automatically according
to the ambient temperature (the corresponding light will be on). In AUTO mode, the speed
button is disabled.
TIMER SETTINGS
• To set the desired operating time (1 to 24 hours), press the TIMER button after commissioning.
(the timer indicator lights-up) When the set time is reached, the unit turns off automatically. The display
shows the number of hours set. If the timer isn‘t set, the machine will operate continuously.
• If you press the timer button without activating another function, you can set the time at
which the appliance should be turned on in advance. For example, if you press the timer to
"2", the unit turns on after 2 hours.
“SLEEP“ FUNCTION
• In cooling mode, pressing the SLEEP button increases the set temperature by 1 °C in the first hour,
by another 1 ° C in the second hour, and the temperature is then maintained at that temperature.
• In SLEEP mode, ventilation will operate at low speed. Press the SLEEP button again to return
to the preset temperature and ventilation speed.
• The unit will turn off automatically after 12 hours of SLEEP function ON.