Owner’s Manual – Solar Water Heaters
27
H3165 029664 Rev. B
No solar energy gain is most likely caused by
a lack of power to the solar controller. Check
the solar controller is plugged in and the
switched socket outlet is turned on.
Poor Solar Energy Gain:
Poor solar energy gain can be caused by a
number of factors:
• During the winter months or when it is
cloudy, there may not be enough solar
energy gain available to heat the required
quantity of water.
• The collectors may be shaded by trees or
other structures. A similar effect can be
caused by dirty collectors. Try trimming
the trees and cleaning the collectors.
• Too few solar collectors. Solar collector
sizing details are available from your Dux
supplier.
• Air trapped in the solar collectors. Try
bleeding the collectors as described on
page 21.
Solar Pump Running at Night:
If the temperature of the water in the
solar collectors approaches zero, the
solar controller will turn on the pump for a
short period to feed warm water into the
collectors.
This function is provided to reduce
the chance of water freezing in the collectors
and causing damage.
Booster not Operating:
Electric Boosted Models:
Electric boosted models use an electric
element installed in the storage tank of the
water heater to boost the water temperature
as required.
Ensure the power supply circuit breaker
has not “tripped”. If the water heater is on
a timed tariff such as controlled load or off-
peak, ensure this is operating correctly.
Gas Boosted Models:
Gas boosted models use an instantaneous
gas water heater installed between the
storage tank of the water heater and the hot
water outlets to boost the water temperature
as required.
Please refer to the instantaneous gas water
heater Owner’s Guide for troubleshooting
information.
If after checking the above
points, the problem has not been
identified, please contact Dux
After Sales and Service.
Considering a Service Call?
