Ariston 240, User Manual

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Heat pump water heater - OPERATING AND MAINTENANCE INSTRUCTIONS FOR THE USER
80
8.3 Troubleshooting
Problem Possible reason What to do
Water comes
out cold or
insufficiently
warm
Low temperature set Increase the temperature set for the outlet water.
Device functioning errors
Check for errors on the display and act in the way specified
on the chart "Faults".
No electrical connection, disconnected or
damaged wirings Check the voltage at the supply terminals, verify the
integrity and connections of the cables.
Absence of HC/HP signal (if the product is
installed with the HC/HP signal cable)
Try to put the product in “Boost” mode, if is ok in this way,
check the connection of the meter, check the integrity of the
HC/HP cable.
Malfunctioning of the timer for two-tier rate (if the
product is installed in this configuration) Check the operation of the contactor day / night and that
the set time is enough to heat water.
Insufficient air flow to the evaporator. Clean the grilles and ducts regularly.
Product off Check availability of electricity, turn on the product.
Usage of a large amount of hot water when the product is heating up phase.
Probe error Control the presence, even if occasional E5.
The water is
boiling (with the
possible
presence of
steam from the
taps)
High level of scaling of the boiler and
components
Turn off the power, drain the unit, remove the sheath of the
resistance and remove lime scale inside the boiler, be
careful not to damage the enamel of the boiler and the
sheath resistance. Repackage the product as in the original
configuration, it is recommended to replace the flange
gasket.
Probe error Control the presence, even if occasional E5.
Reduced
functioning of
the heat pump,
semi-
permanent
operation of the
electrical
resistance
Air temperature out of range Depending from the climatic conditions.
“Time W” value too low
Set a parameter for lower temperature or a longer unit of
“Time W".
Installation done not in accordance with electric
voltage (too low)
Provide a proper Electric voltage.
Evaporator clogged or frozen Check the cleaning of the evaporator.
Problems with the heat pump circuit Make sure that there are no errors on the display.
Are not yet past 8 days by:
-First Time instalation.
-Change of the parameter Time-W.
-No power from mains in absence of batteries or exhausted batteries.
Insufficient flow
of hot water
Leaks or obstructions by the water circuit
Verify that there are no leaks along the circuit, check
the integrity of the the deflector pipe, the integrity of
incoming cold water pipe and hot water pipe.
Overflowing
water by the the
safety valve
A drip of water by the device should be
considered normal during the heating
If you want to avoid the drip, install an expansion vessel on
the plant supply.
If leakage continues during the period of no heating, check
the calibration of the device and the pressure of the water
network. Caution: Do not obstruct the hole for evacuation of
the device!
Increase of the
noise
Presence of obstructive elements inside
Check the components in movement, clean the fan and the
other parts who can generate noise or vibrations.
Components vibration
Check the components fixed with screws, be sure that the
screws are tight.
Problems of
visualization or
display off
Damage or disconnection of the wiring
connecting electronic board and interface board Check the integrity of the connection, check the operation
of electronic boards.
No power from mains in absence of batteries or
exhausted batteries. Check if there is electric mains supply and check the
conditions of the batteries.