Ariston NIMBUS M NET User Manual page 25

INTERNAL UNIT ERROR LIST
ERROR DESCRIPTION
1 14 Outdoor Sensor 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 fl ow sensor damaged
9 03 System return sensor damaged
9 10 HP communication error
9 23 Low pressure error
9 24 Ebus Communication error between EM and TDM - Check wiring connection between TDM end Energy Manager
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 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. Check for auxiliary pump confi guration
9 71 External unit Version undefi ned
2 P2 Antilegionella not completed
2 P3 DHW boost: comfort setpoint not reached
2 P4 First thermostat of resistance (auto)
2 P5 Second thermostat of resistance (manual)
2 P6 Night tariff contact not present
2 P7 Precirculation Error
2 P9 SG ready input confi guration not completed
TROUBLESHOOTING
Activation of thermoregulation based on outdoor sensor and outdoor
sensor not connected or damaged
Flow sensor not connected or damaged
Return sensor not connected or damaged
- Check the wiring connection of the modbus cable.
- Red led on TDM not blinking-> change TDM control board
Check water leakage of the hydraulic circuit
- Water pressure switch damaged
- Wiring of water pressure switch damaged
- 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. 17.11.3
Check anode connection
- Check water presence in the tank
- Check anode status
- Hydraulic scheme not selected by parameter 17.2.0
Function not selected by parameter 17.1.0
Function not selected by parameter 17.1.1
- 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 par. 17.11.3)
before the heat request
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
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
DHW comfort setpoint not reached during boost cycle.
- Check DHW tapping during boost cycle
- Check fl ow temperature during boost cycle
- Check heating resistors activation
- Check main circulation activation
- Check water fl ow by par 17.11.3
- Check safety thermostat status and wirings
Check main circulation activation
- Check water fl ow by par 17.11.3
- Check safety thermostat status and wirings
- Par 17.5.2 = HP-HC or HP-HC 40°C and par. 17.1.0 = Absent
Water fl ow not detected for 5 times during pre-circulation
Just one of par 17.1.0 or 17.1.1 is defi ned as SG Ready input
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