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28
14 Frequently Asked Questions
Issue Cause Solution
A Cylinder not charging
A.1 Power supply turned off
A.2 Tariff not set correctly
A.3 Temperature setpoint
not set correctly
A.1 Ensure both power supplies are
turned on
A.2 Set tariff correctly (Section 7.2.6)
A.3 Set Primary setpoint (Section
11.2.4)
B The water in the
cylinder is too hot
B.1 Primary/Boost
temperature setpoint is
too high
B.2 Hygiene mode overriding
primary setpoint
B.3 Temperature sensors
faulty or not installed
correctly
B.1 Check/adjust the primary and
boost temperature setpoints
(Section 11.2.4)
B.2 Check/adjust the Hygiene setpoint
(Section 11.2.5)
B.3 Check temperature displayed for
accuracy (Section11.2.7), if
clearly incorrect contact supplier
C Hot water runs out
during the day
C.1 Cylinder not storing
enough energy to meet
daily requirements
C.2 Increased usage
resulted in hot water
running out earlier than
usual
C.1 Raising the Primary setpoint in
order to store additional energy
during the off peak period
(Section 11.2.4)
D How can I minimise
energy consumption
D.1 Compression/threaded
joints not formed
correctly
D.2 Frequent use of Boost
function
D.3 Energy lost through
pipework
D.1 Store water at lower
temperatures. This means that
less energy will be consumed to
heat the water and also minimise
heat loss from the cylinder during
the day (Section 11.2.3)
D.2 Minimise boost usage during peak
rate electricity periods. Ensure
that adequate energy is stored
in the cylinder overnight to meet
the user’s daily requirements.
D.3 Ensure all pipework from the
outlet of the cylinder is well
insualted to minimise heat loss
through the pipework
Frequently Asked Questions
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