18
4.1.
Table of anomalies and remedies
The interventions must be carried out by a qualified installer or by a
specialized service center.
Effect
Cause
Remedy
A delayed activation of
the ventilation respect to
the new temperature or
function settings.
The circuit valve needs some
time to open and as a result
the hot or cold water takes
time to circulate in the
appliance.
Wait for 2 or 3 minutes to open the
circuit valve.
The appliance does
not activate the
ventilation.
No hot or cold water in the
system.
Check that the water boiler or
cooler are functioning correctly.
The ventilation does not
activate even if there is
hot or cold water in the
hydraulic circuit.
The hydraulic valve remains
closed.
Dismount the valve body and
check if the water circulation is
restored.
Check the working efficiency of the
valve by powering it separately
with 230V. If it activates the
problem could be the electronic
control.
The fan motor is blocked or
burnt out.
Check the windings of the motor
and the free rotation of the fan.
The micro-switch that stops
the ventilation when the filter
grill is opened does not close
correctly.
Check that by closing the grill the
micro- switch contact is activated.
The electrical connections are
not correct.
Check the electrical connections.
The appliance leaks
water during the heating
function.
Leaks in the hydraulic
connections of the system.
Check the leak and fully tighten
the connections.
Leaks in the valve unit.
Check the state of the gaskets.
There are formations of
dew on the front panel.
Thermal insulation unstuck.
Check the correct positioning
of the thermo-acoustic insulation
paying attention to that in the front
above the finned battery.
There are drops of water
on the air outlet grill.
In situations of high humidity
(>60%) condensation could
form, especially at the
minimum ventilation speeds.
As soon as the humidity starts
falling the phenomenon
disappears. In any case the
presence of a few drops of water in
the appliance does not indicate a
malfunction.