Bristan DUL3 THBSM C Інструкція з монтажу Посібник з монтажу - Сторінка 15
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Troubleshooting
Symptom
Only hot or cold water from
TMV outlet.
No flow or low flow rate
and / or varying
temperatures.
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Cause
Inlet water supplies are
reversed (hot to cold supply).
Inlet filter is partially blocked.
Partially closed stop or service
valve in water supply pipework
to the mixer valve.
Instantaneous water heater
cycles on and off as the flow
rate or pressure is too low.
Head of water is below the
minimum distance required.
Inlet filter is partially blocked.
Hot or cold water being
drawn off elsewhere causing
pressure changes or instanta-
neous boiler changes.
Make sure the maintained
inlet pressures are nominally
balanced and sufficient.
Airlock or partial blockage of
the pipework.
No hot or cold water reaching
the shower valve.
Remedy
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
Clean or replace, flush through
pipework before refitting.
Open stop or service valve.
Increase water flow rate or
pressure through system
Contact the boiler manufacturer.
Refer to the 'Specification' section.
Clean or replace, flush through
pipework before refitting.
Do not use other water outlets
when using the shower valve.
If pressures are unbalanced then
a pressure reducing valve should
be used.
Flush through pipework to ensure
removal of debris and any airlocks.
Check hot and cold feeds (the valve
will shut down if either the hot or
cold supply fails).
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