Temperature
too low
Low hot water
temperature
Check that domestic hot water temperature is
a minimum of 55ºC for stored water and 50ºC
for combination boilers.
Logic Module
temperature setting
too low
Maximum temperature is set to a factory
default of 45ºC. To adjust refer to the important
information section (Safety Information) and
Controller Commission Instructions in the Smart
Installation Guide.
Temperature too
low - Controller
temperature ready
display does not
stabilise
Hot water supply
issue
Check another hot water outlet to ensure that
hot water is available.
Mixed water supplies Water supplies MUST be from the same source:
MUST NOT be gravity hot and mains cold.
Unbalanced water
supplies
For mains fed systems the cold and hot feeds
should be as evenly balanced as possible -
especially for HP unvented systems.
Combination boiler
unable to meet demand
See same cause in 'Fluctuating Water
Temperature' symptom.
Temperature too
hot
Seasonal conditions In the warmer months, the mains water
temperature can rise to ambient level. The
Aqualisa SmartValve
TM
always blends a mix of
both hot and cold supplies therefore the output
temperate at fully cold (controller setting) will
always be higher than the incoming cold water
supply.
Seasonal conditions
(gravity fed systems
only)
For installations which utilise a cold water
storage supply (gravity fed system), the ambient
temperature in the loft can rise to above 40ºC.
In turn, this warms the stored water. Check
by running a cold tap that is supplied from the
water storage. N.B. Kitchen taps are normally
fed from the mains water system.
Maximum
temperature setting
is not to your
preference
Settings need
adjusting
Refer to section 'Temperature too low', possible
cause 'Logic module setting too low'
Controller remains
illuminated after
switching shower o
Poor cable connection Check data cable connections are making good
contact and are fully inserted and that there
is no visible damage (this includes installations
where a wired remote is fitted).
Water flows
from incorrect
outlet (divert
models only)
Pipe work configured
incorrectly
Refer to section: Diverter Controller Matrix in
the Smart Installation Guide.
Primary outlet setting
not configured (for
remote control use
only)
Refer to section: Diverter Controller Matrix in
the Smart Installation Guide.
Low / no flow
(continued)
Water supply issue For Standard Aqualisa SmartValve
TM
- Ensure water
is turned fully on at the mains and at the servicing
valve in the supply.
Ensure isolation valves are fully open.
Restriction in the
waterway
See same cause in 'Pump noisy and low / no flow'
symptom.
Blocked or kinked
hose liner
Where a flexible hose is fitted, unscrew the
shower hose from the outlet connection and
turn the shower on.
Incoming mains water
pressure or flow too low
(Standard Aqualisa
SmartValve
TM
only)
After confirming that the filters are clear, check
with the local water authority.
Separate, stand alone
pump not activating
(Standard Aqualisa
SmartValve
TM
only)
Ensure sucient flow to activate the flow
switches of the pump. Refer to IMPORTANT
INFORMATION section in the Smart
Installation Guide.
Aqualisa SmartValve
TM
pump not activating
Refer to Setting Water System Mode section in
the Smart Installation Guide. Ensure mode is set
to Normal or ECO Gravity setting.
Shower head or
Aqualisa SmartValve
TM
is set to ECO mode
Refer to page 9 of this guide and to the above
point.
Unable to adjust or
control temperature
Reversed inlet water
supplies (i.e. Hot
supply feeding cold
inlet and vice-versa)
Ensure correct water supply to specified inlet
connection of the Aqualisa SmartValve
TM
.
Fluctuating water
temperature
Incorrect setting
on Logic Module of
Aqualisa SmartValve
TM
If hot water supply is from a combination boiler-
the Logic module mode MUST be set to COMBI.
Refer to Setting Water System Mode section in
the Smart Installation Guide.
Airlock in water
supplies (for gravity
fed systems only)
See “Air lock” in Possible Cause section on
page 15.
Hot water
temperature too high
Ensure hot water supply temperature is below
65ºC (minimum 55ºC for stored water and 50ºC
for combination boilers).
Communications issue Check data cable connections and that there is
no visible damage.
Combination boiler
unable to meet
demand
Check if another outlet in the property is being
used at the same time.
Check that the hot water temperature is stable
at another high flowing outlet (e.g. bath hot tap
- run at maximum flow rate), additionally run a
cold outlet at 1/3 of a maximum flow rate. If the
same issue is evident on these outlets, contact
your boiler manufacturer.
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