Default Settings - Ariston NUOS PLUS 200 Instructions For Installation, Use, Maintenance

DEFAULT SETTINGS

The appliance is manufactured with a series of default modes, functions or values, as indicated in the table below:
PARAMETER
WORKING MODE
DEFAULT SET TEMPERATURE
MAX. TEMPERATURE SETTABLE WITH THE HEATING ELEMENT
MINIMUM SETTABLE TEMPERATURE
MAX. TEMPERATURE SETTABLE WITH THE HEAT PUMP
ANTI-LEGIONNAIRE'S DISEASE PROTECTION
HOLIDAY MODE
DEFROST (active defrost activation)
HC-HP (two-tier rate operation mode)
HYSTERESIS
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 wa-
ter heater will continue supplying hot water if 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 it. If
both components are affected, both symbols will flash.
CAUTION!
Before intervening on the product by following the indications below, check the correct electrical connection of the components to the
mainboard and the correct position of the NTC sensors in their seats.
Cause
007 NTC Condenser: Open or Short Circuit
NTC Discharge (Compressor Outlet):Open or Short
008
Circuit
009 NTC Air: Open or Short Circuit
010 NTC Evap: Open or Short Circuit
012 NTC Suction (Compressor Inlet): Open or Short Circuit
021 Gas Leak
032 Compressor Issue
042 Evaporator Obstructed
044 Fan Issue
051 High Pressure
053 Compressor Thermal Protector: KO
081 Electronic Expansion Valve Issue
218 Dome NTC sensor (hot water): Open or Short Circuit
Water Temperature Sensor (Heating Element Zone):
230
Open or Short Circuit
Water Temperature sensor (Heating Element Zone):
231
safety intervention (1st level).
Water Temperature sensor (Heating Element Zone):
232
safety intervention (2nd level).
233 Relay blocked
241 Impressed Current Anode: Open Circuit
What to do
ON OFF Verify NTC Condenser proper functioning
ON OFF Verify NTC Discharge proper functioning
ON OFF Verify NTC Air proper functioning
ON OFF Verify NTC Evap proper functioning
ON OFF Verify NTC Suction proper functioning
Verify compressor inlet sensor proper functioning. If the error persists,
ON OFF recover residual gas; find the leak in the cooling circuit; repair it; make
vacuum and recharge circuit with 1100g of refrigerant gas
ON OFF Check power voltage on compressor connector.
Turn off the appliance.
ON OFF
Check that the evaporator and the external unit casing is not obstructed.
Check power voltage on fan connector.
ON OFF
Control the proper functioning of sensor at compressor inlet.
ON OFF Check pressure switch wiring. Verify gas quantity.
ON OFF Check compressor thermal protector connector.
Verify expansion valve cables. Verify NTC suction and NTC Evap correct
ON OFF
functioning.
ON OFF Verify NTC sensor (hot water) proper functioning
Check the correct assembly of sensor wiring on related mainboard
OFF OFF connector.
Verify sensor proper functioning.
OFF OFF Verify sensor proper functioning.
OFF OFF Verify sensor proper functioning.
Reset the appliance by pressing the ON/OFF button twice. If the error per-
OFF OFF
sists, replace the motherboard.
Check the presence of water inside the product.
If the error persists, verify the anode proper functioning. Check the correct
OFF OFF
assembly of anode wiring on related mainboard connector.
If the error persists, replace mainboard.
FACTORY DEFAULT SETTING
GREEN
53 °C
75 °C
40 °C
62 °C
DEACTIVATED
DEACTIVATED
ACTIVATED
DEACTIVATED
12°C
33 / EN