Specifications

WHAT SHOULD I DO DURING HOLIDAYS?
If you are going to be away for a week or more, it is advisable to turn off the
electricity supply to the system. While there is no damage likely if the
electricity is left on you will consume energy through storage tank heat losses
which can be avoided.
WARNING: If the hot water system is not used, for two weeks or more,
a quantity of hydrogen gas, which is highly flammable, may accumulate
in the water heater. To dissipate this gas safely, it is recommended that
a hot tap be turned on for several minutes at a sink, basin or bath but
not a dishwasher, clothes washer, or other appliance. During this
procedure there must be no smoking, open flame or any other electrical
appliance operating nearby. If hydrogen is discharged through the tap,
it will probably make an unusual noise similar to air escaping.
WHAT SHOULD I CHECK BEFORE MAKING A SERVICE CALL?
If after checking the following points the problem has not been identified,
please contact the distributor from whom you purchased the system.
NOTE: It is important to know that there are no user serviceable
components in the system, and as such, it is recommended that no
covers be removed and no adjustments made to the system settings by
anyone other than an authorised representative.
FAULT FINDING
Pressure & Temperature Relief Valve (PTR)
It is not unusual for the PTR to allow a small quantity of water to escape
during the heating cycle. The amount of discharge will depend on hot water
usage.
Continuous trickle (PTR)
This is most likely due to a build up of foreign matter. In this case try gently
raising the easing lever on the pressure & temperature relief valve for a few
seconds then release gently. This may dislodge a small particle of foreign
matter and rectify the fault.
Steady flow (PTR)
This may be caused by excessive water supply pressure, a faulty pressure
& temperature relief valve or a faulty thermostat. Turn off the electricity
supply and contact your Dux agent.
No Hot Water
• Is the Pressure & Temperature relief valve discharging too much water?
Part No: H3023 16 of 22
Version: 10155A