Nimbus M NET R32 Range (User Manual) EU

Commissioning 4.2 Error

Commissioning 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 Outside temperature 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 Check the configuration of parameter 1.1.5 error 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. 30 / EN

Commissioning Code Description Resolution 936 Floor thermostat 1 error Check the flow of the under-floor system. Check the connection of the thermostat on the IN-AUX2 STE terminal of the Energy Manager and/or STT of the TDM. If the thermostat of the under-floor system is not present, apply an electrical jumper to terminal IN-AUX2 STE of the Energy Manager and/or STT of the TDM. 937 No circulation error Check that the main circuit has activated 938 Anode fault Check the connection of the anode Check whether there is any water in the indirect cylinder Check the condition of the anode Check the configuration of parameter 1.2.6 940 Hydraulic scheme not defined Hydraulic diagram not selected through parameter 1.1.0 955 Water flow check error Check the connection of the flow and return temperature sensors 970 Aux. pump configuration mismatch Check the configuration of parameter 1.2.5 2P2 Thermal cleanse not complete Sanitisation temperature not reached in 6 h: Check the drawing of domestic hot water during the thermal sanitisation cycle Check the activation of the heating element 2P3 DHW setpoint not reached in boost Domestic hot water set-point temperature not reached during the boost cycle Check the drawing of domestic hot water during the DHW boost cycle Check the activation of the heating element 2P4 Electr. heater thermos. (manual) Check the activation of the main circulation pump Check the flow with the reading of the flow meter through parameter 13.9.3 Check the condition of the safety thermostat and of the cabling 2P5 Electr. heater thermostat (auto) Check the activation of the main circulation pump Check the flow with the reading of the flow meter through parameter 13.9.3 Check the condition of the safety thermostat and of the cabling 2P7 Precirculation error Check the connection of the flow meter Run an automatic deaeration cycle 1.12.0 2P8 Low pressure warning 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. 2P9 SG ready input config. err. Only one of the parameters 1.1.0 or 1.1.1 is set as an SG Ready input 31 / EN