DU
AL
HEA
TING & COOLING
CONTROLLER
www
.theaquariumsolution.
com
7
SYMPTOM
CAUSE
SOLUTION
Temperature
reading keeps
fluctuating.
Probe is too close to
heater or chiller outlet and
getting a false reading.
Probe not fully immersed
in water.
Probe or sensor cable
damaged.
Re-position probe so that it is away and
upstream from the heater or chiller outlet.
Re-position probe so it is fully submerged in a
suitable location
Sensor / unit will need replacing.
Heating and
cooling sockets
are switching
quickly.
Probe is positioned to
close to the heater or
chiller outlet.
Re-position probe so that it is away and
upstream of the heater or chiller outlet.
Alarm sounds
frequently.
Alarm setting are not
correct.
Probe not in a suitable
location, causing false
readings.
Change alarm settings so that it does not fall
within the set heating and cooling differentials.
Check probe is in the correct position as per
instructions and make sure it is submerged.
Temperature
reading suddenly
changes after a
water change or
when the return
pump is powered
back on.
The probe can only
measure the temperature
in its location. If there is no
water flow or the probe
has come out of water it
can activate the heater or
cooler unnecessarily.
When performing maintenance disconnect the
Heating and Cooling Controller from power to
prevent incorrect operation.
Reposition the probe in a suitable location in
the sump, do not position in a weir.
Check operation of the return pump.
WARRANTY
Should any defect in material or workmanship be found within 12 months of the date
of purchase D-D The Aquarium Solution Ltd undertakes to repair, or at our discretion,
replace the defective part free of charge.
Our policy is one of continual technical improvement and we reserve the right to
modify and adjust the specification of our products without prior notification.
