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Quartz Thermo
installation guide
page 14
Troubleshooting guide
Water output is either
all hot or all cold,
or cold only
Symptom
Possible cause
Action
Reversed inlet supplies
Check that the supplies
correspond with the inlet
markings
Water output is not hot
enough
The temperature of the hot
water cylinder is too low
Water flow through the
appliance is too fast
The cylinder temperature
should be at least 15˚c
hotter than the blend
Check the flow rate
recommendations with
the heater manufacturer
Flow rate is poor and
water temperature is low
Airlock in the water
supply
Check that the pipe work
is laid in accordance with
the correct practices,
paying particular attention
to potential air-traps
Water temperature
regularly swings between
hot and cold
Cold water pressure is
too high
The flow regulator has
not been fitted
If the static water pressure
exceeds 7 bar (100 psi)
install a pressure reducing
valve (PRV) in accordance
with the installation guide
Fit the flow regulator
Poor flow rate
Twisted hose
Debris in shower head
Debris in filters
Debris in cold inlet flow
regulator
Check and clear as
necessary
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