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(a) Property water
supply pipe partially
blocked or
undersized.
Shower pattern
collapses when
another cold tap
is turned on.
Shower gives hot
water when turned
cold and cold
water when turned
hot.
Shower
insufficiently hot
without pressing
red button and
rotating further.
(b) Property stop or
servicing valve not
fully open.
(c) Insufficient mains
cold water pressure.
(a) Hot and cold water
supplies have been
connected in
reverse.
(a) Adjustable
maximum
temperature
incorrectly set.
Contact the local water
supplier or your installer.
Contact the local water
supplier or your installer.
Refer to section:
'Installation, Reversed
Inlet Supplies'.
Refer to section:
'Commissioning and
Control Assembly
Installation, Maximum
Temperature Setting'.
Open valve.
(d) Inlet strainer
blocked.
Check and clean inlet
strainers.
Shower force too
strong.
Fit flow regulator.(c) Flow regulator not
fitted.
RemedyMalfunction Cause A B C
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(a) Flow control fully
open.
Reduce the flow. Refer
to section: 'Operation'.
(b) Pressure above 5
bar.
Contact installer to fit a
pressure reducing valve.
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(a) Heater appliance
not igniting due to
insufficient mains
pressure or flow.
(b) Heater appliance
not igniting due to
appliance fault.
(c) Product hot or cold
isolating valve not
fully open.
No hot water
available.
Contact the local water
supplier or a CORGI
registered installer.
Contact a CORGI
registered installer.
Open valve.
Wait until reheated.(d) Hot water run out.
Check and clean inlet
strainers.
(e) Inlet strainer
blocked.
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