12
Code Fault Corrective actions
3
Heating
without water
indicated by
the display
- Switch off the power supply on the electrical panel
- Check if the water supply is correctly connected to the water heater
and that the water heater is full of water
- If not, fill the water heater tank
- Check the safety thermostat at the base and reset if necessary
- Switch on the power supply on the electrical panel
- Reset the heating without water error message by pressing “+” and
“-” simultaneously
4
Unexpected
long heating
period
- Switch off the power supply on the electrical panel
- Check if the safety device has been correctly reset.
- The check the heating element and connections
- If the heating element is correct, switch the power supply on.
2
Safety device
open
- Switch off the power supply on the electrical panel
- Check if the safety device has been correctly reset.
- Switch the power supply on
- Reset the error message by pressing “+” and “-” simultaneously
5 or 1
Faulty
memory or
sensor error
- Reset the error message by pressing “+” and “-” simultaneously
- Switch off the power supply on the electrical panel
- Switch the unit on
- If error 1 remains, replace the display
- If error 5 remains, replace the thermostat
No
display
when
switched
on
- Check that the power supply is correctly cabled and that the mains
supply is present.
- Switch the electrical power supply off and check that the flat cable
between the display and the controller is correctly connected then
switch on again.
- If the symptom persists, replace first the cable between the controller
and the display then the display itself and finally the controller.
Switch the
power on
- If the symptoms persist, first replace the display
- If the symptoms still persist, replace the thermostat
I obtain cold
water in
SMART mode
- A sudden, significant increase in hot water consumption can result in
a situation where you occasionally obtain cold water.
- Switch from SMART to manual mode and select the desired
temperature level.
- Return to SMART mode later
- If the symptom occurs on a regular basis, increase the comfort level
in SMART mode or switch to manual mode from time to time.
I obtain cold
water in
manual mode
- Proceed as for the unexpected long heating period error (error code
4)
I obtain cold
water and
the display is
switched off
- Check the electrical wiring of the water heater and check that the flat
cable between the thermostat and the display is connected correctly.
- If the symptoms persist, first replace the display.
- If the symptoms still persist, replace the thermostat
The but-
tons do not
work and a
flashing box is
displayed
- Check if the child lock is activated
- Deactivate the child lock by pressing the “Mode” and “-” buttons
simultaneously for more than 3 seconds
- The box symbol should disappear from the display
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