Faults - Ariston 80 L Manual Del Usuario

Heat pump water heater – OPERATING AND MAINTENANCE INSTRUCTIONS

7.11 Faults

As soon as a fault occurs, the appliance enters into the fault mode while the display emits flashing signals and
visualizes the error code. The water heater will continue supplying hot water provided the fault affects only one of two
the heating units, by activating the heat pump or heating element.
If the fault involves the heat pump, the symbol "HP" will flash on the screen, while the heating element symbol will
flash if the fault involves this component. If both components are affected, both symbols will flash.
Error
Cause
code
Heating occurs without any water in
E1
the water tank
Excessive temperature of the water
E2
in the tank
E4 Sensor fault – heating element zone
Excessive difference between the
E5 temperatures of the heating
element zone sensors
H2 Circuit in low pressure or fan fault
H3 Compressor fault or gas leak
H4 Evaporator obstructed
H5 Fan fault / Evaporator sensor fault
H6 Air sensor fault
H7 Evaporator sensor fault
H8 Hot water sensor fault
F1 PCB fault
Excessive number of ON/OFF
F2
(RELEASE)
Lack of communication between the
F3
PCB and interface
Heating
Heat pump
element
operation
operation
Turn off the appliance. Verify the causes of the lack of water
OFF OFF
(leakage, faulty hydraulic connections, etc.)
Turn the appliance off then wait until the water temperature
OFF OFF decreases; if the problem persists, contact the technical assistance
service
Turn off the appliance. Check or replace the heating element zone
OFF OFF
sensors, if necessary
Turn off the appliance. Check or replace the heating element zone
OFF OFF
sensors, if necessary
Turn off the appliance. Check that the fan is not broken and that
the evaporator is not obstructed. Check whether the hot gas valve
ON OFF
functions properly and replace it if necessary. Check or replace the
evaporator sensor.
Turn off the appliance. Check that the evaporator is not obstructed.
Verify whether the wirings and the compressor functions properly
ON OFF
and/or check for any refrigerant gas leakages. Check or replace
the evaporator sensor.
Turn off the appliance. Check the continuity of the air flow inside
ON ON
the heat pump and air ducts.
Turn off the appliance. Verify that there are no physical
impediments to the movement of fan blades, check the wiring of
ON OFF
connection with circuit boards. Check or replace the evaporator
sensor.
Verify whether the sensor is properly connected and positioned,
ON OFF
and replace it if necessary.
Verify whether the sensor is properly connected and positioned,
ON OFF
and replace it if necessary.
Verify whether the sensor is properly connected and positioned,
ON OFF
and replace it if necessary
Try turning the appliance off then on again and verify the operation
OFF OFF
of the control boards, if necessary replace it.
OFF OFF Temporarily disconnect the product from mains.
Try turning the appliance off then on again and verify the operation
OFF OFF
of the control boards or replace them, if necessary.
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What to do