35
FAULT DIAGNOSIS
Symptom
Cause / Rectification
1.
Only hot or cold
water from the
mixer outlet.
a.
Inlets reversed (hot supply to cold supply). Refer to
section:
‘Reversed Inlet Supplies’
.
b.
No hot water reaching the mixer.
c.
Check the filters for any blockage.
d.
Installation conditions outside operating
parameters: refer to sections:
‘Specifications’
and
‘Commissioning’
.
e.
If you have a combination type boiler it may not be
producing sufficiently hot water at desired flow rate
(refer to ‘Specifications’). Fit flow regulator (supplied)
to shower valve outlet. For more information contact
Mira Showers or visit the website.
2.
F l u c t u a t i n g o r
reduced flow rate.
a.
Check the showerhead, hose and filters for any
blockage.
b.
Make sure the maintained inlet pressures are
nominally balanced and sufficient, refer to section:
‘Specifications’
.
c.
Make sure the inlet temperature differentials are
sufficient, refer to section:
‘Specifications’
.
d.
Flow regulator fitted incorrectly.
e.
Airlock or partial blockage in pipework.
3.
No flow from the
mixer outlet.
a.
Check the showerhead, hose and filters for any
blockage.
b.
Hot or cold supply failure.
4.
Blend temperature
drift.
a.
Refer to symptom
2.
above.
b.
Significant supply temperature fluctuation.
c.
Significant supply pressure fluctuation.
d.
Faulty thermostatic cartridge, renew.
5.
Maximum blend
temperature setting
too hot or too cold.
a.
Indicates incorrect maximum temperature setting; refer
to section:
‘Commissioning’
.
b.
Refer to symptom
4.
above.
6.
Water leaking from
the Showerhead.
a.
Normal for a short period after shut off.
b.
Check that the pressures are not in excess of the
specifications for product.
c.
Cartridge inlet seals damaged, renew.
d.
Renew the thermostatic Cartridge.
7.
Flow rate too low or
too high.
a.
(low) Insufficient supply pressures.
b.
(high) Supply pressure too high. Install flow reg.
c.
Refer to symptom
2.
above.
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