Aqua Medic heat controller duo II Manual De Instrucciones página 6

The display returns to the measuring mode. As soon as the setpoint falls below the value set in the control
accuracy, the unit activates the power socket and switches on the consumer (heating). In cooling mode, a fan
connected to this socket will start as soon as the setpoint exceeds the set temperature.
Example: The setpoint is set to 25 °C, the cooling and heating control accuracy at 1 °C. As soon as the
temperature falls to 24 °C (setpoint - control accuracy) the heating unit starts. As soon as the temperature
reaches the setpoint (25 °C) the heating unit stops. In cooling mode, the unit works the other way round.
SET+▲: By pressing this key combination for several seconds, the display can be turned off or on steadily (then
the display shows „On"). However, constant display illumination reduces the service life of the display.
TIMER+▲: Reset. The controller is reset to manufacturer's settings.
▲+▼: By pressing this key combination for several seconds, you get to the switching mode of C (Celsius) and F
(Fahrenheit). Use the arrow keys to change the setting.
If you hold down the "SET" button for a few seconds, the heat or cool indicator at the top of the display starts to
flash. Now, you can switch between heating and cooling mode using the arrow keys. The respective setting is
saved as soon as no further key is pressed.
The setting "COOL" can be used when a fan is to be used for cooling at high temperatures instead of a heater.
But then the heating cable may not be too strong (max. 10 W per 100 liters), so only a slight flow of the under
gravel is ensured without significant heating of the water.
If the "TIMER" button is briefly pressed, the timer menu is reached. By pressing the "TIMER" button again, you
can jump back and forth between hours, minutes, ON and OFF times. Here, you set how long the heating cable
should be switched on and off (00:00 to 99:59). Values in the range of 15 minutes (00:15) have proven to be
suitable. The ON or OFF times are entered using the arrow keys. It is saved automatically by no longer pressing
a key. During operation, you can see from the time shown on the display how long the timer, thus the heating
cable, remains on or off.
Fig. 2: Display
1. Cooling on
2. Heating an
3. Heating cable on
4. Temperature too high (temperature > setpoint + alarm). HH.H flashes additionally
5. Temperature too low (temperature < setpoint + alarm). LL.L flashes additionally
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