Fault Diagnosis; User Maintenance - Mira Extreme Thermostatic Installation And User Manual

1. User Maintenance

The Mira Extreme is fully performance tested after assembly. Providing the Mira
Extreme has been correctly installed and is operated as advised, difficulties should
not arise. In the unlikely event that you experience problems with your appliance
then the following procedure will enable you to undertake basic fault finding before
contacting the person responsible for installing your shower.
Malfunction
Maximum showering
temperature too hot.
Shower temperature too cold.
Blend temperature unstable.
Pump does not operate.
Low or no water flow.

FAULT DIAGNOSIS

Cause
Maximum temperature
incorrectly set.
Hot water cylinder temperature
less than 12°C above shower
temperature.
Maximum temperature
incorrectly set.
Spray plate blocked.
Inlet filter blocked.
Isolating valve partially closed.
Plumbing system fault.
Electrical supply failure.
PCB failure.
Motor overheated, thermal
switch operated.
Isolating valves closed.
Inlet filters blocked.
Check valve fitted incorrectly.
Appliance sited above cold
water storage cistern.
Plumbing system fault (airlock).
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Remedy
Reset maximum
temperature, refer to section:
'Commissioning'.
Adjust cylinder temperature.
Note! It is recommended that
the stored water temperature
does not exceed 65°C.
Reset maximum
temperature, refer to section:
'Commissioning'.
Clean spray plate. Refer to
the Installation & User guide
supplied with the shower
fittings.
Contact your installer.
Open valve.
Contact your installer.
Contact your installer.
Contact your installer.
If the thermal switch operates
repeatedly contact customer
services for further advice.
Open valves.
Contact your installer.
Contact your installer.
The appliance is not suitable
for negative head installations.
Refer to section: 'Installation
Requirements'.
Contact your installer.