Fault Diagnosis; Heater Settings - Mira Orbis Installation And User Manual

Fault Diagnosis

The trouble shooting information tabled below gives details on probable causes and
remedies should difficulties be encountered whilst the shower is in operation.
Warning! There are no user serviceable components beneath the cover of the
appliance. Only a competent tradesperson should remove the front cover!

Heater Settings

Symptom LCD
Back
Light
Appliance fails OFF
to operate
OFF
OFF
OFF
Shower cycles ON
from hot to
cold ON
ON
ON
ON
ON
Low
Low Flow Heater Setting
Warning Low/Medium/
High
OFF
OFF
OFF
OFF
ON Medium/High
ON Medium/High
ON Medium/High
ON
ON
OFF High
Medium
Probable Cause
Electrical supply
isolated at double
pole switch.
Fuse blown or
MCB/RCD tripped,
indicating possible
electrical fault.
Faulty Relay PCB.
Faulty Control
PCB.
Handset blocked.
Inlet Filter blocked.
Water pressure
below minimum
required for the
appliance to
operate.
Faulty Relay PCB.
Faulty Solenoid.
Temperature limit
reached (flashes on
LCD).
25
High
Probable Remedy
Switch on electrical
supply via the
pullcord or wall
mounted switch.
Renew the fuse or
reset the MCB/RCD.
If fault persists,
contact your
installer.
Replace Relay PCB.
Replace Control
PCB.
Remove and clean.
Remove and clean.
Make sure incoming
mains water
stopcock and/or
appliance isolating
valve is fully turned
on.
Replace Relay PCB.
Replace Inlet Valve
Assembly.
Turn the
temperature control
down or reduce
heater setting to
Medium until a
cooler temperature
is achieved.