110 / EN
Service
Code Description Resolution
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 pres-
sure 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
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