Ariston NIMBUS HYBRID MODULE UNIVERSAL NET Manual page 91

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 defi ned
9 41 HIV IN1 not defi ned
9 42 HIV IN2 not defi ned
9 44 Cooling overtemperature
9 45 Flow switch stuck
9 46 HP compressor error
9 55 Water fl ow switch
9 58 Buff er temperature sensor
9 59 Buff er over-temperature
P2 circulator confi guration not aligned with
9 70
hydraulics.
2 P2 Antilegionella not completed
2 P7 Precirculation Error
2 P9 SG ready input confi guration not completed
(*) BUS power supply overload
A BUS power supply overload error may occur due to the connection of three or more devices within the installed sys-
tem. Devices which may overload the BUS network include:
- Multizone module
- Solar pump assembly
- Module for instant production of domestic hot water
To avoid overloading the BUS power supply, set microswitch 1 on one of the P.C.B.s inside the equipment connected to
the system (except the Tank) to OFF, as illustrated in the fi gure.
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 underfl oor zone
- Check main circulation activation
- Check water fl ow 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 fl ow of the cooling circuit
- Check if main circulation is active before the heat request
- Check the water fl ow detection by water fl ow sensor see 12.13.3
before the heat request
Check the compressor's frequency after the end of the heating
request through parameter 12.14.1
Check the fl ow temperature sensor and return temperature sensor
placement.
Buff er charge inhibited
Buff er 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 fl ow temperature during antilegionella cycle
- Check heating resistors activation
Water fl ow not detected for 5 times during pre-circulation
Just one of par 12.1.0 o 12.1.1 is defi ned as SG Ready input
ON
OFF
1 2
microswitch
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