D-D The Aquarium Solution DUAL HEATING & COOLING CONTROLLER Product Instruction Manual page 6

Pressing any button will mute the audible alarm, but the visual alarm
(alarm icon) will keep flashing until the sensor temperature is within the
range 24.3ºC to 25.7ºC.
CALIBRATION
The Dual Heating and Cooling Controller is calibrated at the factory and should
need no further adjustment. It is however possible to make change of +/- 1.5ºC to
the temperature displayed if desired. To make this adjustment please follow the
steps below.
Once the unit is installed, the temperature probe is positioned in its final location and
the temperature on the unit is steady decide how much you want to offset the reading
by. For example if the Dual Heating and Cooling Controller is reading 26.2ºC and the
temperature readout you want it to match is 26ºC then you will need to -0.2ºC from
the unit.
With the unit displaying the current temperature, not flashing, press and hold the 'SET'
and down arrow keys together for 5 seconds. The display will start to flash 0.0ºC, use
the up and down arrows to select the offset you would like to program into the unit
and then press the 'SET' button again to complete the process.
The display will now show the current temperature reading with the included offset.
FAULT CODES & TROUBLESHOOTING
Code Fault Description
EEE Sensor Fault
HHH High temp. alarm
LLL Low temp. alarm
6
Solution
Sensor requires replacement
Temp exceeding +99.9°C
Temp exceeding -40.0°C