Troubleshooting
10
Symptom
Cause
Remedy
No flow or poor flow rate.
Partially closed isolation valve.
Open isolation valve.
Instantaneous water heater cycles on
and off as flow rate or pressure is too
low.
Increase water flow rate or pressure
through system.
Head of water is below the
minimum distance required.
Refer to specification for minimum
distance required.
Hot or cold water being drawn off
elsewhere causing pressure changes or
instantaneous boiler temperature
changes.
Do not use other water outlets when
using the taps.
Airlock or partial blockage in the supply
pipework.
Flush through pipework to ensure
removal of debris and any airlocks.
Airlock or partial blockage in the supply
pipework.
Water dripping for a few
seconds after the tap has
been turned off.
This is normal for a short time after
using the taps.
This is caused by residual water
tension, the build up of water in the tap
body
If water continues to drip, possibly due
to the ceramic disc valves.
Remove valves and clean, refer to
'Maintenance'
section before starting any
maintenance.
Constant dripping / leaking
when the tap is not in use.
Cartridge / Valve not fully shutting off.
Service fitting and replace cartridge /
valve. Refer to maintenance section on
page 06.
Fitting does not turn on.
Closed isolation valve.
Open isolation valve.
Closed stop or service valve.
Open stop or service valve.
