Fault Diagnosis - Mira DISCOVERY Installation And User Manual

Symptom
1. Only hot or cold
w a t e r f r o m t h e
mixer outlet.
2. F l u c t u a t i n g o r
reduced flow rate.
3.
No flow from the
mixer outlet.
4. Blend temperature
drift.
5. M a x i m u m b l e n d
temperature setting
too hot or too cold.
6. Water leaking from
the Showerhead.
7. Flow rate too low or
too high.

FAULT DIAGNOSIS

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. I n s t a l l a t i o n c o n d i t i o n s o u t s i d e o p e r a t i n g
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.
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.
a.
Check the showerhead, hose and filters for any
blockage.
b. Hot or cold supply failure.
a. Refer to symptom 2. above.
b. Significant supply temperature fluctuation.
c. Significant supply pressure fluctuation.
d. Faulty thermostatic cartridge, renew.
a. Indicates incorrect maximum temperature setting; refer
to section: 'Commissioning'.
b. Refer to symptom 4. above.
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.
a. (low) Insufficient supply pressures.
b. (high) Supply pressure too high. Install flow reg.
c. Refer to symptom 2. above.
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Cause / Rectification