Mira JUMP Installation And User Manual page 23

Malfunction
The temperature
cycles between hot
and cold.
No hot water
or reduced
temperature from
shower, with the
controls in any
position.
ALL OF THE FOLLOWING REMEDIES MUST BE PERFORMED BY A COMPETENT
No hot water
or reduced
temperature from
shower, with the
controls in any
position.
The shower
temperature cycles
between hot and
cold.
Cause
The showerhead sprayplate
is blocked.
The temperature is set too
high. This is causing the
thermal switch to turn off the
heating element to reduce
the water temperature.
The water pressure is below
the minimum required. This
can be due to other outlets
(e.g. toilet, garden hose,
washing machine, etc.)
drawing water while the
shower is being used.
TRADESPERSON ONLY!
Insufficient water supply
pressure.
Failure of a microswitch or
the thermal switch.
An internal wiring
connection has failed.
One of the heater tank
elements has failed.
Switch assembly diaphragm
fault.
The temperature is set too
high. This is causing the
thermal switch to turn off the
heating element to reduce
the water temperature.
Clean the showerhead sprayplate
(see Maintenance).
Turn the temperature control
anti-clockwise to reduce the water
temperature.
Turn off other mains water
appliances whilst shower is in use.
Make sure incoming mains water
stopcock and/or appliance isolating
valve is fully turned on. If the
fault persists, contact the shower
installer.
Make sure incoming mains water
stopcock and/or appliance isolating
valve is fully turned on. Check
incoming mains water pressure.
Check the continuity of the
switches, using a suitable continuity
measuring device. Replace the
switches as necessary.
Check the integrity of the internal
wiring.
Replace the heater tank.
Replace switch assembly.
Turn the temperature control
anti-clockwise to reduce the water
temperature.
DO NOT TAMPER with the thermal
switch.
23
Remedy
(continued)