Ariston NIMBUS M NET User Manual

Initial start-up
30 / EN
4.2 Error list
The errors are displayed on the interface in the indoor unit (see paragraph "System interface SENSYS HD").
Indoor unit errors
Code Description Resolution
114 Outdoor sensor not available Temperature control activation based on the external sensor
External sensor not connected or damaged. Check the sensor’s connection
and replace it, if necessary.
730 Buffer high probe error Buffer filling inhibited. Check the hydraulic diagram.
Buffer sensor not connected or damaged. Check the sensor’s connection and
replace it, if necessary.
731 Buffer overtemperature Buffer filling inhibited. Check the hydraulic diagram.
Buffer sensor not connected or damaged. Check the sensor’s connection and
replace it, if necessary.
732 Buffer low probe error Buffer filling inhibited. Check the hydraulic diagram.
Buffer sensor not connected or damaged. Check the sensor’s connection and
replace it, if necessary.
902 System flow sensor damaged Delivery sensor not connected or defective. Check the sensor’s connection
and replace it, if necessary.
923 Heating circuit pressure error Check for any water leakages in the hydraulic circuit
Faulty pressure switch
Defective cabling of the pressure switch. Check the connection of the
pressure switch and replace it, if necessary.
924 HP communication error Check the cabling between the TDM board and the Energy Manager
927 AUX inputs correspondence error Verify the configuration of parameters 1.1.3 and 1.1.4
928 Energy supply shutdown
configuration error
Check the configuration of parameter 1.1.5
933 Flow sensor overtemperature Check the flow in the primary circuit. Delivery sensor not connected or
defective. Check the sensor’s connection and replace it, if necessary.
934 DHW tank sensor damaged Calorifier sensor not connected or defective. Check the sensor’s connection
and replace it, if necessary.
935 Tank overtemperature Check whether the 3-way valve is locked in the DHW position. Check the
connection of the calorifier’s sensor and replace it, if necessary.

Ariston NIMBUS M NET Specifications

General

Type	Air-to-Water Heat Pump
Refrigerant	R32
Power Supply	Electric
Power Supply Voltage	230 V
Connectivity	Wi-Fi
Heating Capacity	6 kW