Vaillant geoTHERM VWS Installation Instructions Manual

Also see for geoTHERM VWS: Installation instructions Operating manual Operating manual

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Vaillant geoTHERM VWS Installation Instructions Manual Manual pdf 74 page image

Installation instructions geoTHERM VWS 0020046310_017410.5 Blocking errorThe heat pump is shut down. It can only be restarted byresetting the error after removing the cause of the fault(see Menu I 1).With the exception of Errors 90 and 91, these do notneed to be reset. The heat pump starts again when thecause of the error has been removed.Emergency modeDepending on the nature of the malfunction, there aresettings that can be made to allow the heat pump tocontinue operating in an emergency mode (by means ofthe integrated electrical heating) until the fault iscleared, either in heating operation (display: "CH priori-ty"), hot water operation (display: "DHW priority") orboth (display: "CH priority/DHW priority"), see the fol-lowing tables, "Emergency operation" column.Fault code Error text/description Emergencymode Possible cause Remedy32 Error heat source sensor T8Short-circuit in the sensorpossible The internal sensor for the sourceoutlet temperature is defective ornot properly plugged into the PCB.Check the plug contact on the PCB andthe cable harness, check the sensor forcorrect position and function (resistancemeasurement using VR 11 characteristics,see Appendix), replace sensor.33 Error heat circuit pressuresensorshort-circuit in the pressuresensorThe pressure sensor in the heatingcircuit is defective or not properlyplugged in. Check the plug contact on the PCB andthe cable harness, check pressure sensorfor correct functioning, replace pressuresensor.34 Error brine pressure sensorshort-circuit in the pressuresensorpossible The pressure sensor in the heatsource circuit is defective or notproperly plugged in.40 Error comp outlet sensorT1Short-circuit in the sensorpossible The internal temperature sensor onthe high pressure side of thecompressor is defective or notproperly plugged into the PCB.Check the plug contact on the PCB andthe cable harness, check the sensor forcorrect position and function (resistancemeasurement using VR 11 characteristics,see Appendix), replace sensor.41 Error heat source sensor T3Short-circuit in the sensorpossible The internal sensor for the sourceinlet temperature is defective or notproperly plugged into the PCB.42 Error HP return sensor T5Short-circuit in the sensorpossible The internal temperature sensor onthe heating return line is defectiveor not properly plugged into thePCB.43 Error HP flow sensor T6Short-circuit in the sensorpossible The internal temperature sensor onthe heating flow line is defective ornot properly plugged into the PCB.44 Error external sensor AFShort-circuit in the sensorpossible The outside temperature sensor orits connecting cable is defective orit is not connected correctly.Check the ProE plug on the PCB, checkthe connecting cable, replace the sensor.45 Error DHW tank sensor SPShort-circuit in the sensorpossible The cylinder temperature sensor isdefective or it is not connectedcorrectly.Check the ProE plug on the PCB, checkthe sensor for correct function(resistance measurement using VR 10characteristics, see Appendix), replacesensor.46 Error HB flow sensor VF1Short-circuit in the sensorpossible The upper sensor in the buffercylinder is defective or it is notconnected correctly.47 Error HB return sensor RF1Short-circuit in the sensorpossible The lower sensor in the buffercylinder is defective or it is notconnected correctly.48 Error flow sensor VF2Short-circuit in the sensorWWoperationpossibleThe contact temperature sensorVF2 in the heating circuit isdefective or it is not connectedcorrectly.Table 10.5 Fault-induced shutdown10 Troubleshooting and diagnosis