Mira Zest 7.5, Installation, Operation And Maintenance Manual

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26
Fault Diagnosis
Fault Diagnosis
WARNING! There are no user serviceable components beneath the cover of the
appliance. Only a competent tradesperson should remove the cover.
The trouble shooting information tabled below gives details on what you can do as a user
without removing the cover should you encounter difficulties whilst operating the shower.
Note! Should these remedies prove to be unsuccessful in solving your problem, contact
your installer for advice.
Malfunction Cause
Remedy
No water or very low
flow rate. Handset sprayplate
blocked.
Remove & clean (Refer to
Maintenance in the I,O& M
guide for the fittings).
Incoming water supply
stop valves or appliance
isolating valve turned
down or off. Turn stop/isolating valve to
the fully on position.
Hose or Handset blocked
Clear blockage or renew
Appliance fails to
produce hot water in
any switch position.
Electrical supply isolated
at double pole switch (the
pullcord).
Switch on electrical supply via
the double pole switch.
Fuse blown or MCB/RCD
tripped indicating
possible electrical fault. Renew the fuse or reset the
MCB/RCD. If fault persists,
contact your installer.
Shower cycles from
hot to cold.
The temperature knob is
positioned at an unsafe
level causing the
appliance thermal trip to
operate and cut the
power to the heater tank.
Turn the temperature knob
sufficiently anti clock-wise to
increase water flow and
reduce temperature.
(Continued)