Table Of Error Codes; Anti-Freeze Function; Maintenance - Ariston NIMBUS HYBRID MODULE NET User Manual

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
1 14 Faulty outdoor sensor
4 20* Bus power supply overload
9 02 Faulty primary delivery sensor
9 10 HP communication error
Ebus Communication error between EM and
9 24
TDM
9 33 Overheat
9 34 DHW Tank sensor damaged
9 35 Tank overtemperature
9 36 Floor Thermostat 1 error
9 37 No circulation error
9 38 Anode Fault
9 40 Hydraulic scheme not defined
9 41 HIV IN1 not defined
9 42 HIV IN2 not defined
9 44 Cooling overtemperature
9 45 Flow switch stuck
9 46 HP compressor error
9 55 Water flow switch
9 58 Buffer temperature sensor
9 59 Buffer over-temperature
P2 circulator configuration not aligned with
9 70
hydraulics.
2 P2 Antilegionella not completed
2 P7 Precirculation Error
2 P9 SG ready input configuration not completed
16 / GB
TROUBLESHOOTING
Activation of thermoregulation based on outdoor sensor and outdoor
sensor not connected or damaged
Flow sensor not connected or damaged
- Check the wiring connection of the modbus cable.
- Red led on TDM not blinking-> change TDM control board
- Check wiring connection between TDM end Energy Manager
- Check water fl ow of the heating circuit
- DHW tank sensor not connected or damaged
- Check 3-way valve (DIV1) blocked in DHW position
- Check water circulation of the underfloor zone
- Check main circulation activation
- Check water flow sensor detection by par. 12.13.3
- Check anode connection
- Check water presence in the tank
- Check anode statu
Hydraulic scheme not selected by parameter 12.2.0
Function not selected by parameter 12.1.0
Function not selected by parameter 12.1.1
Check water flow of the cooling circuit
- 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
Check the compressor's frequency after the end of the heating re-
quest through parameter 12.14.1
- Check the flow temperature sensor and return temperature sensor
placement.
Buffer charge inhibited
Buffer charge inhibited
Warning displayed for 30 seconds and stored in the historical
Antilegionella setpoint temperature not reached in 6 hours
- Check DHW tapping during antilegionella cycle
- Check flow temperature during antilegionella cycle
- Check heating resistors activation
Water flow not detected for 5 times during pre-circulation
Just one of par 12.1.0 o 12.1.1 is defined as SG Ready input