Bristan DSC WMBF C Installation Instructions Manual - Page 13

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Troubleshooting

Symptom
Cause
No flow or low
partially closed isolation valve.
flow rate
Instantaneous water heater
cycles on and off as flow rate or
pressure is too low.
Head of water is below the
minimum distance required.
Hot or cold water being drawn
off elsewhere causing pressure
changes or instantaneous boiler
temperature changes.
Airlock or partial blockage in the
supply pipework.
Water dripping
This is normal for a short time
from taps
after using the taps.
If water continues to drip,
possible build up of debris/
limescale in ceramic disc valves.
Taps do not
Closed isolation valve.
turn on
Water supplies to the tap turned
off.
Need help? Give us a call on 0844 701 6273 and speak to one of our trained advisers.
Remedy
Open isolation valve.
Increase water flow rate or
pressure through system to
meet required minimum working
pressure of tap.
Refer to 'Specifications' on page
4.
Do not use other water outlets
when using the taps.
Flush through pipework to
ensure removal of debris and
any airlocks.
This is caused by capilary action,
the build up of water in the tap
body.
Remove valves and clean, refer
to 'Maintenance' section on page
12 before removing the valve.
Open isolation valve.
Turn on both water supplies to
the tap.
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