Vaillant ecoTEC exclusive SERIES Installation And Maintenance Instructions Manual

Also see for ecoTEC exclusive 832: Installation and maintenance instructions Installation and maintenance instructions

Contents

ecoTEC exclusive installation and maintenance instructions / 0020017768_02369 Troubleshootingh Note!If you wish to contact the Vaillant Service Team,please refer to the error code displayed (F.xx)and the appliance status (S.xx) if possible.9.1 Diagnostics9.1.1 Status codesThe status codes that you can see on the display pro-vides information about the current operating conditionof the appliance.Fig. 9.1 Display of status codesThe display of the status codes can be viewed as follows:• Press the "i" button.The display shows the status code, e.g. S.4 for"Burner mode - Heating".The display of the status codes can be ended as follows:• Press the "i" button or• Do not press any button for about 4 minutes.The current filling pressure in the heating systemappears in the display again.Display MeaningHeating modeS.0 No heat requiredS.1 Fan startS.2 Water pump flowS.3 IgnitionS.4 Burner modeS.5 Fan and water pump return waterS.6 Fan return flowS.7 Water pump return waterS.8 Burner lock after heating modeHot water functionS.10 Hot water switch onS.11 Fan startS.13 IgnitionS.14 Burner modeS.15 Fan and water pump return waterS.16 Fan return flowS.17 Water pump return waterStorage tank charging/heat retention modePage 20 Water pump flowS.21 Fan startS.23 IgnitionS.24 Burner modeS.25 Fan and water pump return waterS.26 Fan return flowS.27 Water pump return waterS.28 Burner lock after recharging/heat retention(cycle suppression)Other:S.30 Room thermostat blocks heating operation(terminal 3’-4’ open)S.31 Summer mode active or eBUS controller or timerblocks heating operationS.32Heat exchanger antifreeze active, as fan speedvariation is too high. Appliance is within the waitingtime of the operation block functionS.34 Antifrost mode activeS.36Target value specification of room thermostat< 20 °C , i.e. the external regulator is blockingthe heating operationS.41 Water pressure >2.9barS.42Exhaust gas diverter return signal blocks burneroperation (only in connection with accessories) orcondensate pump faulty, heat demand is blockedS.53Appliance is within the waiting period of themodulation block/operation block function due towater shortage (flow-return spread too large)S.54Appliance is within the waiting period of theoperation block function due to water shortage(temperature gradient)S.96 Return sensor test running, heating demandsare blockedS.97 Water pressure sensor test running, heatingdemands are blockedS.98 Flow/return sensor test running, heatingdemands are blockedTable 9.1 Status codes9 Troubleshooting