Ariston 80L Manual Del Usuario página 54

Heat pump water heater – OPERATING AND MAINTENANCE INSTRUCTIONS FOR THE USER
7.11 Anti-frost function
In any event, if the temperature of the water in the tank falls below 5 °C while the appliance is powered, the heating
element (1200 W) will be automatically activated to heat the water up to 16 °C.
7.12 Faults
As soon as a fault occurs, the appliance enters into the fault mode while the display emits flashing signals and
visualises 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
E1
water in the water tank
Excessive temperature of the
E2
water in the tank
Sensor fault – heating element
E4
zone
Excessive difference between
E5 the temperatures of the
heating element zone sensors
Circuit in low pressure or fan
H2
fault
H3 Compressor fault or gas leak
H4 Evaporator obstructed
H5 Fan fault
H6 Air sensor fault
H7 Evaporator sensor fault
H8 Hot water sensor fault
H9 Active defrost fault
F1 PCB fault
Excessive number of ON/OFF
F2
(RELEASE)
Lack of communication
F3 between the PCB and
interface
Empty tank (EMPTY),
F4 impressed current anode
circuit open
Short-circuit on the impressed
F5
current anode circuit
Heating
Heat pump
element
operation
operation
Turn off the appliance. Verify the causes of the lack of
OFF OFF
water (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
Check or replace the heating element zone sensors, if
OFF OFF
necessary
OFF OFF Check or replace the sensors, if necessary
Turn off the appliance. Check that the fan is not broken and
that the evaporator is not obstructed. Check whether the
ON OFF
hot gas valve functions properly and replace it if necessary.
Check the evaporator sensor.
Turn off the appliance. Check that the evaporator is not
obstructed. Verify whether the wirings and the compressor
ON OFF
functions properly and/or check for any refrigerant gas
leakages. Check or replace the evaporator sensor.
Turn off the appliance. Check that the evaporator and the
ON ON
external unit casing is not obstructed.
Turn off the appliance. Verify that there are no physical
impediments to the movement of fan blades, check the
ON OFF
wiring of connection with circuit boards. Check the
evaporator sensor.
Check the proper connection of the sensor cable between
ON OFF the two units, Verify whether the sensor is properly
connected and positioned, and replace it if necessary.
Check the proper connection of the sensor cable between
ON OFF the two units, Verify whether the sensor is properly
connected and positioned, and replace it if necessary.
Verify whether the sensor is properly connected and
ON OFF
positioned, and replace it if necessary
OFF
Check that the fan is not broken and that the evaporator is
(if air
not obstructed. Check whether the hot gas valve functions
ON temperature
properly and replace it if necessary. Check that the external
il below
unit casing is not obstructed.
5 °C)
Try turning the appliance off then on again and verify the
OFF OFF
operation 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
OFF OFF operation of the control boards or replace them, if
necessary.
Verify whether there is any water in the tank, check or
OFF OFF
replace the impressed current anode, if necessary.
ON ON Check or replace the impressed current anode if necessary
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What to do