Symptom
Cause
Remedy
Showering temperature
fluctuates significantly.
This could be due to the
Mixing Valve drawing a low
hot flow from certain types of
combination bolier, and the
boiler turning off.
Increase the flow on the controller by
moving the dial to a higher flow setting
(
II
,
III
,
IIII
)
Decrease the set temperature of the hot
water on the combination boiler.
Water leaking from the
showerhead
This is normal for a short time
after turning off.
Adjust the angle of the showerhead as
necessary to vary draining time
No or low water flow
Batteries low / run out in
Wireless Controller.
Replace batteries, refer to maintenance
section (pages 23-25).
Outlet is blocked.
Check outlet hose and showerhead for
any blockages.
Partially closed stop or service
valve in water supply pipework
to the mixing valve.
Open stop or service valve.
Airlock or potential blockage in
supply pipework.
Flush through pipework to ensure
removal of any debris and any airlocks.
Inlet filters partially blocked.
Remove filter and clean, refer to
Maintenance section.
Water supply pressure too low.
Check water pressure, refer to
‘Specification’ for working pressures
Mixing Valve is
excessively noisy.
Purging procedure was
not carried out when
commissioning the Mixing
Valve.
Purge the Mixing Valve.
Refer to Purge Procedure in the
‘Commissioning’ section
E1 displayed
Main unit is powered off.
Check power is on at the main unit and
check if the LED is Green or Yellow,
Refer to ‘Wireless Initialisation & Pairing
of the Wireless Controller to the Mixing
Valve’ in Commissioning Section
E2 displayed
Main unit has developed a fault. Call Bristan Customer Services on 0330
026 6273.
E3 displayed
Hot water is isolated or has
insufficient flow.
Check the hot water supply is not
isolated.
Inlet filter on the hot water
supply is blocked.
Remove filter and clean, refer to
Maintenance section.
Hot water too hot.
Check hot water is functioning correctly,
refer to ‘Specification’
Hot water too cold.
E4 displayed
Cold water is isolated or has
insufficient flow.
Check the cold water supply is not
isolated.
Inlet filter on the cold water
supply is blocked.
Remove filter and clean, refer to
Maintenance section.
Cold water too hot.
Check cold water is functioning correctly,
refer to specification
Cold water too cold.
Need help?
Give us a call on
0330 026 6273
and speak to one of our trained advisors.
22
Troubleshooting