Bristan ALP 2HBF C Installation Instructions & User Manual - Page 16
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Troubleshooting
Symptom
No flow or low
flow rate
Water dripping
from taps
Taps do not
turn on
16
Cause
Partially closed isolation valve.
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.
This is normal for a short time
after using the taps.
If water continues to drip,
possible build up of debris /
limescale in the cartridge.
Closed isolation valve.
Water supplies to the tap turned
off.
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
5.
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 and clean the cartridge,
refer to 'Maintenance' section
on page 15 before removing the
cartridge.
Open isolation valve.
Turn on both water supplies to
the tap.