Troubleshooting
Symptom
Cause
Remedy
No flow or low
flow rate and /
or varying
temperatures.
Check filters for any blockage.
Clean as necessary, refer to
Maintenance section (pages 21-22).
Partially closed stop or service
valve in water supply pipework to
the shower valve.
Open stop or service valve.
Instantaneous water heater
cycles on and off as the flow rate
or pressure is too low.
Increase water flow rate or
pressure through system.
Contact the boiler Manufacturer.
Head of water is below the
minimum distance required.
Raise the cistern or fit a shower
booster pump.
Inlet filter is partially blocked.
Clean or replace, flush through
pipework before refitting.
Hot or cold water is being drawn
off elsewhere causing pressure
changes or instantaneous boiler
temperature changes.
Do not use other water outlets
when using the shower.
Make sure the maintained inlet
pressures are nominally
balanced and sufficient.
Refer to Installation Requirements
section (pages 10-14).
Airlock or potential blockage of
the pipework.
Flush through pipework to ensure
removal of debris and any airlocks.
No hot or cold water reaching the
shower valve.
Check hot and cold feeds (the valve
will shut down if either the hot or
cold supply fails).
Water leaking
from
showerhead.
This is normal for a short time
after turning off.
Adjust the angle of showerhead in
holder as necessary to vary
draining time.
Shower control valve failing to
close fully, possibly due to water
borne debris.
Remove shower control valve
assembly and check. Refer to
Maintenance section (pages 21-22).
Before dismantling shower valve.
Flow control valve seals
damaged.
Check condition of flow control
valve and replace as necessary.
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