35 / EN
PROBLEM POSSIBLE CAUSE WHAT TO DO
The water delivered is cold
or insuciently hot
Temperature setting is low Raise the water temperature setting
Machine malfunctioning
Check for errors on the display and follow the instructions on the “Er-
rors” table
No electrical connection, wires disconnected or
damaged
Check the voltage on the power terminals, check the condition of the
wires and connections
HC/HP signal missing (if the product is installed
with EDF signal cable)
To check the operation of the product start the “Boost” mode; if the out-
come is positive check the presence of the HC/HP signal from the meter
and check that the EDF cabling is intact
Malfunctioning of the timer for the two-tier rate (if
the product is installed with this
configuration)
Check the operation of the day/night meter and that the set time is suf-
ficient to heat the water
Insucient air flow to the evaporator Clean the grilles and ducts regularly
Product is switched OFF Check the mains power supply. Switch the product ON
Use of a significant amount of hot water when the product is in heating phase
Sensor error Check for NTC errors, even occasional ones.
The water is boiling (with
possible steam on the taps)
High level of limescale build-up in the boiler and
components
Unplug the power supply, empty the appliance, remove the heating ele-
ment sheath and clean the limescale from the inside of the boiler, taking
care not to damage the enamel on the boiler and the heating element
sheath. Reassemble the product in its original configuration. We recom-
mend replacing the flange gasket.
Sensor error Check for NTC errors, even occasional ones.
Reduced operation of the
heat pump, electrical heat-
ing element is in almost
continuous operation
“Time W” value too low Component depends on climatic conditions
Installation performed with non-compliant electric-
ity power supply (voltage too low)
Set a lower temperature parameter or a higher “Time W” parameter
Evaporator obstructed or frozen Power the product with the correct voltage
Problems with the heat pump circuit Make sure that the evaporator is clean
Problems with the heat pump circuit Check the display for error messages
8 days have not passed yet since:
- Initial start-up
- Time W parameter change.
- Power failure.
Insucient hot water flow Leaks or obstructions in the hydraulic circuit
Check the circuit for leaks, check the condition of the deflector on the
inlet cold water pipe and the integrity of the delivery hot water pipe
Water leaking from the
pressure safety device
It is normal for some water to drip from the device
during the heating phase
To prevent water from dripping, an expansion vessel must be installed
on the delivery system. If the leak continues even after the heating
phase, check the calibration of the device and the mains water pressure.
Warning: Never obstruct the device’s discharge outlet!
Increased noise level
Presence of an internal obstruction
Check the moving components of the unit, clean the fan and other mov-
ing parts which could cause noise
Some components are vibrating
Check the components connected using mobile clamps, ensuring the
screws are well tightened
Problems with viewing the
display or the display turn-
ing o
Failure or electrical connection problems between
the motherboard and the interface PCB
Check the connection status and the correct operation of the PCBs.
Power failure Check the power supply
A bad odour is coming from
the product
No siphon or siphon is empty Install a siphon. Ensure it contains the necessary amount of water
Switch the product ON in
heat pump mode, use an
R134/R513 leak detector
Leaks or partial obstruction in the
refrigerant gas circuit
Switch the product ON in heat pump mode, use a leak detector for the
specific type of gas to ensure there are no leaks
Unfavourable environmental or installation condi-
tions
Evaporator is partially obstructed
Check the condition of the evaporator, grille and conduits to ensure they
are clean
Non-compliant installation
Other Contact technical assistance
TROUBLESHOOTING
To Next Page
Loading...
