3Installation instructions geoTHERM VWS 0020046310_011 Notes on the documentationThe following notes are intended as guidance throug-hout the entire documentation.Further documents apply in combination with this instal-lation manual.We accept no liability for any damage caused by fai-lure to observe these instructions.Other applicable documentsFor the owner of the system:Operating manual No. 0020045200For the heating engineer:Installation instructions,VPS buffer cylinder No. 0020070601Installation Manual for vrnetDIALOG No. 839189Installation manual for vrDIALOG No. 0020023003The manuals for any accessories and controllers usedalso apply.1.1 Storage of the documentsPlease pass this installation manual and all other validdocuments on to the owner of the installation in orderfor him or her to store it so that it is available wheneverit is required.1.2 Symbols usedPlease observe the safety instructions in this installationmanual for the installation of the appliance.d Danger!Immediate risk of serious injury ordeath!e Danger!Danger of death by electric shock!H Danger!Danger of burning and scalding!a Caution!Potentially dangerous situation for theproduct and environment.h Note!Useful information and instructions• Symbol for a necessary taskContentsNotes on the documentation 110.3 Displays in the error memory and under"Warning message" .................................................. 7110.4 Temporary shut-down ............................................. 7210.5 Blocking error ............................................................ 7410.6 Other errors/malfunctions ..................................... 7611.2 Packaging .................................................................... 7711.3 Coolants....................................................................... 7712 Warranty and customer service ..................... 7712.1 Vaillant warranty....................................................... 7712.2 Vaillant Service.......................................................... 7713 Technical data .................................................. 7814 Start-up checklist............................................. 8015 Reference ........................................................... 82Appendix ....................................................................... 85Sensor characteristics.......................................................... 85VRC-DCF outside temperature sensor ............................. 86Heat pump schematic........................................................... 87Electrical circuit diagram .................................................... 88