Ariston NIMBUS HYBRID MODULE NET, Руководство пользователя, Страница: 16 / 20

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ANTI-FREEZE FUNCTION
The NIMBUS HYBRID system is equipped with an anti-freeze function, which controls the temperature of the water
discharged from the internal unit by enabling the system devices in the event that the temperature remains below 8 °C
for more than two consecutive minutes.
WARNING
The anti-freeze function is working correctly if:
• The static pressure of the system is between 0.6 and 3 bars
• The system is powered electrically
• When the anti-freeze function activation request is made, there are no operational errors present
MAINTENANCE
Maintenance of the NIMBUS HYBRID system is mandatory and indispensable to ensuring correct operation, apparatus
safety, and the service life of the system itself.
TABLE HYBRID ERROR CODES
If the system shuts down, a code will appear on the system interface display signalling the type of shutdown and the
reason behind it.
To restore normal operation, follow the instructions provided on the display or, if the error persists, contact an authorised
Technical Service Centre for assistance.
ERROR DESCRIPTION TROUBLESHOOTING
1 14 Faulty outdoor sensor
Activation of thermoregulation based on outdoor sensor and outdoor
sensor not connected or damaged
4 20* Bus power supply overload
9 02 Faulty primary delivery sensor Flow sensor not connected or damaged
9 10 HP communication error
- Check the wiring connection of the modbus cable.
- Red led on TDM not blinking-> change TDM control board
9 24
Ebus Communication error between EM and
TDM
- Check wiring connection between TDM end Energy Manager
9 33 Overheat - Check water fl ow of the heating circuit
9 34 DHW Tank sensor damaged - DHW tank sensor not connected or damaged
9 35 Tank overtemperature - Check 3-way valve (DIV1) blocked in DHW position
9 36 Floor Thermostat 1 error - Check water circulation of the underfloor zone
9 37 No circulation error
- Check main circulation activation
- Check water flow sensor detection by par. 12.13.3
9 38 Anode Fault
- Check anode connection
- Check water presence in the tank
- Check anode statu
9 40 Hydraulic scheme not defined Hydraulic scheme not selected by parameter 12.2.0
9 41 HIV IN1 not defined Function not selected by parameter 12.1.0
9 42 HIV IN2 not defined Function not selected by parameter 12.1.1
9 44 Cooling overtemperature Check water flow of the cooling circuit
9 45 Flow switch stuck
- Check if main circulation is active before the heat request
- Check the water flow detection by water flow sensor see 12.13.3
before the heat request
9 46 HP compressor error
Check the compressor’s frequency after the end of the heating re-
quest through parameter 12.14.1
9 55 Water flow switch
- Check the flow temperature sensor and return temperature sensor
placement.
9 58 Buffer temperature sensor Buffer charge inhibited
9 59 Buffer over-temperature Buffer charge inhibited
9 70
P2 circulator configuration not aligned with
hydraulics.
Warning displayed for 30 seconds and stored in the historical
2 P2 Antilegionella not completed
Antilegionella setpoint temperature not reached in 6 hours
- Check DHW tapping during antilegionella cycle
- Check flow temperature during antilegionella cycle
- Check heating resistors activation
2 P7 Precirculation Error Water flow not detected for 5 times during pre-circulation
2 P9 SG ready input configuration not completed Just one of par 12.1.0 o 12.1.1 is defined as SG Ready input