Fault Diagnosis - Mira 415 Installation And User Manual

mira 415 shower controls are fully performance tested after assembly. In the unlikely
event that you experience problems with your shower, the following procedure will
enable you to undertake basic fault finding before contacting the person responsible
for installing your shower.
key for applicability column
a - Gas heated showers.
B - Unvented mains pressure showers.
C - Mains pressurised, instantaneous hot water, heated from thermal store
showers.
malfunction
Shower insufficiently
hot.
Wide temperature
fluctuations from
shower when no other
draw-off is being made.

faulT dIagnosIs

Cause
(a) Maximum
temperature incorrectly
set
(b) Heater not set on
maximum hot
(c) Flow rate still too
high.
Supply temperature
variations to shower,
especially hot water,
caused by the heater
appliance cycling
on and off, due to
insufficient flow rate,
insufficient water
pressure or heater not
fully modulating.
39
remedy
Reset adjustable
maximum temperature.
Consult heater
manufacturers water
output instructions.
Fit 9 l/min flow
regulator between
shower control and
hose.
(a) Increase supply
pipe sizes to premises.
(b) Adjust heater
throttle valve to
increase flow and
prevent heater cycling.
(c) Contact your
installer.
(d) See also "Shower
insufficiently hot".
a B C
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