Troubleshooting
Symptom
Symptom
Symptom
Symptom
Cause
Cause
Cause
Cause
Remedy
Remedy
Remedy
Remedy
Maximum water
temperature too
hot or cold
Maximum water temperature
set incorrectly.
Reset maximum water
temperature. Refer to ‘Maximum
Temperature Setting’ in
Commissioning section (page 19)
and ‘Adjusting the Temperature’ in
Operation & Temperature setting
section (page 18)
Outlet water
temperature too
hot / cold.
Inlet filter is partially blocked.
Check insert filters for any
blockages and clean as necessary.
Installation conditions outside
operating parameters.
Refer to Installation Requirements
section (page 9-10).
Service shower valve as
recommended. Refer to
Maintenance section (pages 22-23)
Refer to Operation & Temperature
Setting section (page 18).
Setting section (page 18).
Water
temperature too
cold – maximum
water
temperature
incorrectly set.
Hot water temperature is less
than 10ºC above the required
blend temperature.
Adjust hot water temperature or
wait for water system to reheat if
stored system is used.
Instantaneous water heater not
igniting because water flow
rate is too low.
Increase water flow rate through
the system.
Check cartridge inlet filters and
clean or replace. Refer to
Maintenance section (pages 22-
23).
Contact the boiler manufacturer.
Instantaneous water heater not
igniting because water
pressure is too low.
Increase water pressure through
system.
Contact the boiler manufacturer.
Only hot or cold
water from
shower valve
outlet.
Inlet water supplies are
reversed (hot to cold supply).
Check the connections are the
correct way round. Hot on the left
and cold on the right when viewed
from the front. Rework pipework
as necessary.
Inlet filter is partially blocked.
Clean or replace, flush through
pipework before refitting.
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