Ariston NIMBUS COMPACT M NET - Error Lists and Troubleshooting; Internal Unit Error Codes

92 / GB
ERROR DESCRIPTION TROUBLESHOOTING
1 14 Outdoor Sensor Damaged
Activation of thermoregulation based on outdoor sensor and outdoor
sensor not connected or damaged
4 20* Bus supply overload
7 01 Zone1 Send Probe Damaged
7 02 Zone2 Send Probe Damaged
7 03 Zone3 Send Probe Damaged (N/A)
7 11 Zone1 Return Probe Damaged
7 12 Zone2 Return Probe Damaged
7 13 Zone3 Return Probe Damaged (N/A)
7 22 Zone2 Overheat
7 23 Zone3 Overheat
9 02 System flow sensor damaged 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-> No comunication, Verify the TDM
and Inverter control boards correct operation
9 23 Low pressure error
Check water leakage of the hydraulic circuit
- Water pressure switch damaged
- Wiring of water pressure switch damaged
9 24
Ebus Communication error between EM and
TDM
- Check wiring connection between TDM end Energy Manager
9 33 Overheat - Check water flow 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. 17.11.3
9 38 Anode Fault
Check anode connection
- Check water presence in the tank
- Check anode status
9 40 Hydraulic scheme not defined - Hydraulic scheme not selected by parameter 17.2.0
9 41 HIV IN1 not defined Function not selected by parameter 17.1.0
9 42 HIV IN2 not defined Function not selected by parameter 17.1.1
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 par. 17.11.3)
before the heat request
9 46 HP compressor error
Check the compressor frequency after the end of the heat request
using parameter 17.12.1
9 55 Water flow switch
Check the flow temperature sensor and return temperature sensor
placement.
9 58 Buer temperature sensor Buer charge inhibited
9 59 Buer over-temperature Buer charge inhibited
9 70
P2 circulator configuration not aligned with
hydraulics. Check for auxiliary pump configu-
ration
Warning displayed for 30 seconds and stored in the historical
9 71 External unit Version undefined 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 P3 DHW boost: comfort setpoint not reached
DHW comfort setpoint not reached during boost cycle.
- Check DHW tapping during boost cycle
- Check flow temperature during boost cycle
- Check heating resistors activation
INTERNAL UNIT ERROR LIST