Vaillant ecoTEC sustain 24 Installation And Maintenance Instructions Manual

Also see for ecoTEC sustain 24: Operating instructions Installation and maintenance instructions

0020253094_05 ecoTEC sustain Installation and maintenance instructions 49D Status codes – OverviewNoteSince the code table is used for various products, some codes may not be visible for the product in question.Status code MeaningDisplays in heating modeS.00 Heating mode: No requirementS.01 Heating mode: Fan prerunS.02 Heating mode: Pump prerunS.03 Heating mode: Burner ignitionS.04 Heating mode: Burner onS.05 Heating mode: Pump/fan overrunS.06 Heating mode: Fan overrunS.07 Heating mode: Pump overrunS.08 Heating mode: Temporary shutdown after heating procedureDisplays in domestic hot water modeS.10 Domestic hot water mode: RequirementS.11 Domestic hot water mode: Fan prerunS.13 Domestic hot water mode: Burner ignitionS.14 DHW mode: Burner onS.15 DHW mode: Pump/fan overrunS.16 DHW mode: Fan overrunS.17 DHW mode: Pump overrunDisplay in comfort mode with warm start or domestic hot water mode with cylinderS.20 Domestic hot water mode: RequirementS.21 Domestic hot water mode: Fan prerunS.22 Domestic hot water mode: Pump prerunS.23 Domestic hot water mode: Burner ignitionS.24 DHW mode: Burner onS.25 DHW mode: Pump/fan overrunS.26 DHW mode: Fan overrunS.27 DHW mode: Pump overrunS.28 Domestic hot water mode: Temporary shutdown of the burnerOther displaysS.30 Room thermostat is blocking heating mode.S.31 No heating demand: Summer mode, eBUS control, waiting periodS.32 Fan waiting time: Fan speed outside of the tolerance valuesS.34 Frost protection activeS.39 Underfloor heating contact openS.42 Accessory fault: Flue non-return flap closed or condensate pump faultS.53 Product in waiting period/operating block function due to water deficiency (flow/return spread too large)S.54 Waiting period: Water deficiency in the circuit (flow/return spread too large)S.88 Product purging activeS.91 Maintenance: Operating display demo modeS.96 Automatic test programme: Flow and return temperature sensors, heating and domestic hot water demandblocked or product fault.S.98 Automatic test programme: Return temperature sensor, heating and domestic hot water demand blocked.S.108 Purging the combustion chamber, fan in operationS.109 Product's standby mode activated