11
H3699 Rev. L
Thermann Owner’s Manual
thermann 25/50 Litre Water Heater
Troubleshooting
What Should I Check Before
Making A Service Call?
If there is not enough hot water, it
is recommended that the following
points be considered before making
a service call. If after checking the
following points the problem has not
been identified, please contact Reece
on 1800 080 055
No Hot Water
• Is the Pressure & temperature
Relief Valve discharging too much
water?
• Do you have the correct size water
heater for your requirements?
Sizing details are available from
your thermann supplier.
• Is one outlet (such as the shower)
using more hot water than you
think?
• Carefully review the family's hot
water usage and if necessary
check the shower flow rates with
a bucket, measuring the amount
of water used over that period
of time. If it is not possible to
adjust water usage patterns, an
inexpensive flow control valve
can easily be fitted to the shower
outlet.
• Consider that often the hot water
usage of showers, washing
machines and dishwashers can
be under estimated. Review these
appliances to determine if your
daily usage is greater than the
storage volume of your water
heater. For example, if you have
a 50 litre storage tank and you
are using 80 litres of water it is
possible that there will be certain
times of the day where there is
insufficient hot water. It is also
advisable to inspect tap washers
etc. for leakage and replace if
necessary.
• Is there a leaking hot water pipe
or dripping hot water tap? a small
leak can waste a large quantity of
hot water.
• Replace faulty tap washers and
have your plumber rectify any
leaking pipe work.
Water Discharge from the PTR Valve
It is normal 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) – more than 20L
per day
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 thermann repairs
and service hotline.
