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4c - Product flowing water when switched off:
The digital mixing valve reduces the water flow slowly before final shut-off to reduce the
severity of water hammer. The time duration depends on the flow rate and system pressures.
This is normal and not a product fault.
Shower fittings can continue to drain down after the digital mixing valve is shut off, especially
where there are large volumes of water present (e.g. large deluge heads or long pipe runs).
This process can take several hours and may be triggered by changes in temperature or
atmospheric pressure. This is normal and not a product fault. We would therefore recommend
that all water outlets are kept contained within the water catchment area.
1.
Check the issue is not a natural draining of the fittings. Remove the fittings and monitor
the outlet if necessary.
2.
Activate the shower a number of times at maximum flow to dislodge any debris.
3.
If none of the above resolved the issue, isolate the water and power supply and
contact Mira Customer Service Team.
4d - Showering temperature is hotter / colder than indicated or is fluctuating:
Note: The temperature displayed on the user interface is measured inside the digital
mixing valve, not at the shower outlet.
The perceived temperature of the water from your shower can vary with shower fittings and
room temperature. A wider, finer spray will cool more quickly and feel cooler than a direct
spray, and long outlet pipe runs can also influence the blend temperature, in which case
you may need to adjust the showering temperature.
1.
Combi Boiler fed products: Check the hot water supply is hot enough when the shower
is in use. Combi boilers are sometimes unable to maintain temperatures at higher flows
or may cut-out at lower flows. Check no other devices are using hot water at the same
time. Reduce or increase the maximum flow rate to around 8 litres per minute using
the Mira showers app and see if that solves the issue. Tip: Use the Mira Showers app
to check the temperature of the hot water inlet when the shower is running.
2.
Hot water storage tank fed products: Check the hot water supply is not being
depleted in use. Reduce the maximum flow rate using the Mira showers app or reduce
showering time and see if that solves the issue. Tip: Use the Mira Showers app to
check the temperature of the hot water inlet when the shower is running.
3.
Check the hot and cold supplies are connected to the correct inlets, and that the
temperature and pressures are within the product specification and are stable. Inlet
water pressures must be nominally equal. Note: Use the Mira Showers app to
check the temperature of the hot water inlet is within the temperature range
of 55°C - 65°.
4.
Check no other devices are using water at the same time. Devices switching on/
off (e.g. washing machines, taps etc.) can rapidly change the water pressure of the
system causing rapid pressure and temperature changes.
5.
Ensure Inlet filters and check valves, shower head and hose are not blocked (refer
to "Cleaning and Maintenance Section").
6.
If none of the above resolved the issue, and the measured temperature is significantly
different to that on the controller display, contact Mira Customer Service Team.
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