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

probes location only and may cause the heater or cooler to activate and continue
running if there is no water flow through the system. We do not recommend putting the
probe in a weir as it may come out of water in the event that the return pump stops,
this will result in the probe reading the air temperature and may cause the heater to be
switched on and stay on until water flow is restored.
Connect a heater to the socket marked with the 'I' and sun symbol. If the heater
has a built in thermostat, be sure to set it higher than the temperature setting on the
controller otherwise it will fail to operate when the socket is switched on.
If being used, plug a suitable cooling device into the socket marked with the 'II' and
snowflake symbols. If the cooling device has a built in thermostat, be sure to set it
lower than the temperature setting on the controller to prevent it from being disabled.
Plug the Dual Heating and Cooling Controller in to suitable mains power outlet socket.

OPERATION

Controller is displaying snowflake symbol.
ON – The cooling power socket has been activated and will operate a device if
plugged in to it.
FLASHING – The cooling socket is in standby mode, when the controller reaches
the maximum set temperature it will start a 3 minute delay timer before powering the
socket. This is to protect the cooling device from rapid cycling.
OFF – The cooling socket is not being powered and any device that is plugged in will
be switched off.
Controller is displaying the sun symbol.
ON – The heating power socket has been activated and the heating device will be
powered on.
OFF – The heating socket is not being powered and the heating device will be
switched off.
Controller is displaying the alarm symbol.
ON – The temperature is outside the set range, an audible alarm will also sound to
warn of a potential problem.
OFF – The temperature is within the set range and the unit is in normal operation.
Programming the controller
The controller has a default factory setting of 26ºC with a 0.3ºC differential on the
heating and cooling sockets to allow the unit to be used out of the box for most
freshwater and saltwater tropical aquariums. The setting can however be customised if
required using the steps below.
4