Vaillant aroSTOR VWL B 200/5 UK Installation And Maintenance Instructions Manual

Also see for aroSTOR VWL B 200/5 UK: Operating instructions Installation and maintenance instructions

Appendix0020285063_00 aroSTOR Installation and maintenance instructions 25Fault code Description Possible cause Solution Temporary operationERR. 01Incorrect defrosting sensorreadingsDefrosting sensor incor-rectly installed on the pipe.Air temperature is meas-uredRe-establishing contactbetween the defrostingsensor and the pipeHeat pump decommis-sioned.Heat pump out of gas Leak in the cooling circuit Finding and repairing theleak before filling the cool-ing circuitExpansion valve shut down Break in the copper pipefor the expansion valve fol-lowing interference or dueto contact with a vibratingcomponent.Replacing the expansionvalveCompressor shut down andsafety cut-out activatedCompressor defective Replacing the compressorERR. 02 Incorrect temperaturesensor readings– The air temperatureand the water temper-ature sensors havebeen inverted on thePCB.– The defrosting sensoris connected on thewater connection plug.The water temperaturesensor is connected tothe air connection plug,and the air temperaturesensor is connected tothe defrosting connec-tion plug.Connecting sensors to thePCB correctlyProduct decommissioned.ERR. 03 Incorrect temperaturesensor readingsThe defrosting sensor isconnected on the waterconnection plug. The wa-ter temperature sensor isconnected to the air con-nection plug, and the airtemperature sensor is con-nected to the defrostingconnection plug.Connecting sensors to thePCB correctlyProduct decommissioned.ERR. 04 Incorrect defrosting and hotwater temperature sensorreadingsThe defrosting sensor andthe water temperaturesensor have been invertedon the PCB.Connecting sensors to thePCB correctlyHeat pump decommis-sioned.ERR. 08 Incorrect measurements bythe defrosting sensorThe defrosting sensor isdefective.Replace the sensor The product works in al-ternating operation with theheat pump.EPrO Display card has a storageproblem– Display card is dam-aged– Display connectioncable is damaged– Replacing the displaycard– Replacing the displayconnection cableProduct decommissioned.C Installer level – OverviewSetting level Values Unit Increment, select, explanation DefaultsettingMin. Max.INST.MENU → PV MODE →PV MODE Current value YES, no noINST.MENU → PV MODE → PRIORITYPRIORITY Current value YES: PV MODE has higher priority than frostprotection and eco mode; no: PV MODE haslower priority than frost protection and eco modeYESINST.MENU → DI SPLAY →WATE R Current value ℃AIR INLET Current value ℃T_EV APOR Current value ℃