Operation With Two-Tier Electricity Rate; Anti-Frost Function; Faults - Ariston 200 Mode D'emploi

Heat pump water heater - OPERATING AND MAINTENANCE INSTRUCTIONS FOR THE USER

7.10 Operation with two-tier electricity rate

To be able to operate also on appliances with a two-tier rate system, the control logic calculates the number of average
hours a day during which the power supply is available in the economy mode (HC).
A self-learning function ensures that the appliance reaches the pre-set temperature in the time range during which the
economy rate applies; the maximum limit of hours is determined by the P4 TIME_W parameter; after the initial start-up
(or after switching off the hardware), the default setting is 8 hours. In order to optimize the self-learning function it is
advisable to set AUTO mode.

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 (2000 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
Excessive pressure in the
H1 refrigeration circuit, or faulty
reading on the pressure switch
Heat pump circuit low pressure
H2
or fan fault
Compressor or evaporator
H3
sensor fault, gas leak
H4 Evaporator obstructed
Fan fault /
H5
evaportora sensor error
H6 Air sensor fault
H7 Evaporator sensor fault
H8 Hot water pipe sensor fault
Heating
Heat pump
element
operation
operation
Verify the causes of the lack of water (leakage,
OFF OFF
Turn the appliance off then on again; if the problem
OFF OFF
persists, contact the technical assistance service.
OFF OFF
OFF OFF
Try restarting the machine; if the error persists,
ON OFF
Turn off the appliance. Check that the fan is not
broken and that the evaporator is not obstructed.
ON OFF Check whether the 4 ways valve functions properly
and replace it if necessary. Check the evaporator
compressor functions properly and/or check for any
ON OFF
ON ON
ON OFF
blades, check the wiring of connection with circuit
Verify whether the sensor is properly connected
ON OFF
Verify whether the sensor is properly connected
ON OFF
Verify whether the sensor is properly connected
ON OFF
77
What to do
faulty hydraulic connections, etc.).
Check or replace the heating element zone
sensors, if necessary.
Check or replace the sensors, if necessary.
contact the technical assistance service.
sensor.
Turn off the appliance. Verify whether the
refrigerant gas leakages. Verify whether the
evaporator sensor is properly connected and
positioned, and replace it if necessary.
Check the perfect cleaning of grids and ducts
Turn off the appliance. Verify that there are no
physical impediments to the movement of fan
boards. Check the evaporator sensor.
and positioned, and replace it if necessary
and positioned, and replace it if necessary
and positioned, and replace it if necessary