Table of contents2 Operating instructions ecoTEC plus 0020134822_01Table of contents1 Notes on the documentation ..................................... 31.1 Storing documents .......................................................... 31.2 Applicability of the instructions ................................... 31.3 Identification plate........................................................... 31.4 CE label............................................................................... 31.5 Benchmark......................................................................... 32 Safety .................................................................................42.1 Safety and warning information ..................................42.2 Intended use......................................................................42.3 General safety information............................................53 Description of devices and functions ...................... 73.1 Design ................................................................................. 73.2 Function .............................................................................. 73.3 Hot water production with domestic hot watercylinder ............................................................................... 74 Operation ..........................................................................84.1 Overview of the controls ................................................84.2 Digital Information and Analysis System (DIA) ........84.3 Operating concept ...........................................................94.4 Basic display.................................................................... 104.5 Operating levels ............................................................. 104.6 Preparing for start-up .....................................................114.7 Setting the heating flow temperature .......................134.8 Hot water generation .....................................................144.9 Setting a room thermostat or weathercompensator ....................................................................144.10 Switching off the functions of the boiler ..................144.11 Protecting the heating installation against frost ....165 Troubleshooting .............................................................175.1 Reading fault messages ................................................175.2 Reading fault codes ....................................................... 185.3 Detecting and rectifying faults ................................... 185.4 Rectifying low water pressure .....................................195.5 Resolving ignition faults ................................................195.6 Service message ........................................................... 205.7 Resolving faults in the air/flue gas duct ................ 206 Auxiliary functions ..................................................... 206.1 Operation in the menu................................................. 206.2 Displaying the Live monitor(current status of the boiler).......................................226.3 Setting the display contrast ........................................226.4 Setting the language.....................................................226.5 Displaying contact data for the competentperson ...............................................................................236.6 Displaying the serial number and article number .236.7 Reset burner off time(resetting burner anti-cycling time) ..........................237 Service .............................................................................237.1 Servicing the boiler .......................................................237.2 Caring for your boiler ...................................................238 Decommissioning .........................................................248.1 Disposing of the boiler .................................................248.2 Disposing of the packaging .........................................249 Manufacturer's guarantee andVaillant customer services .......................................249.1 Factory guarantee..........................................................249.2 Vaillant Service ...............................................................2410 Glossary ..........................................................................25Index ...........................................................................................26Brief operating instructions ....................................................27