Contents2 Instructions for use aroTHERM 0020151761_00Contents1 Safety .................................................................... 41.1 Action-related warnings ......................................... 41.2 General safety information .................................... 41.3 Intended use .......................................................... 91.4 CE label ............................................................... 102 Notes on the documentation ............................ 112.1 Observing other applicable documents ............... 112.2 Storing documents............................................... 112.3 Applicability of the instructions ............................ 113 Product description........................................... 123.1 Design of the heat pump system ......................... 123.2 Type designation and serial number ................... 143.3 Overview of the operator control elements ofthe VWZ AI heat pump control module................ 143.4 Digital Information and Analysis System (DIA).... 144 Operation............................................................ 164.1 Operating concept ............................................... 164.2 Basic display........................................................ 174.3 Operating levels................................................... 174.4 Design of the menu.............................................. 184.5 Live Monitor (status codes) ................................. 194.6 Displaying the building circuit pressure ............... 194.7 Reading the operating statistics .......................... 194.8 Displaying contact data........................................ 194.9 Displaying the serial number and articlenumber................................................................. 194.10 Setting the display contrast ................................. 194.11 Setting the language............................................ 205 Operation............................................................ 205.1 Switching the product on/off ................................ 205.2 Activating frost protection .................................... 205.3 Setting the target feed temperature in heatingmode.................................................................... 205.4 Setting a room thermostat or weathercompensator ........................................................ 205.5 Checks and maintenance carried out by theoperator ............................................................... 215.6 Having the product temporarilydecommissioned.................................................. 216 Troubleshooting ................................................ 226.1 Reading the fault message .................................. 226.2 Detecting and rectifying faults ............................. 237 Decommissioning.............................................. 247.1 Having the product permanentlydecommissioned.................................................. 248 Recycling and disposal..................................... 248.1 Disposing of the packaging ................................. 248.2 Disposing of the product and accessories........... 248.3 Arranging disposal of coolant .............................. 24