Vaillant ecoTEC plus 806 VU GB 806/5-5 Installation And Maintenance Instructions Manual

Also see for ecoTEC plus 1006 VU GB 1006/5-5: Installation and maintenance instructions

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Vaillant ecoTEC plus 806 VU GB 806/5-5 Installation And Maintenance Instructions Manual Manual pdf 42 page image

Appendix42 Installation and maintenance instructions ecoTEC plus 0020134823_04Status code MeaningS.32 Waiting period because of fan speed deviationS.34 Frost protection mode activeS.36 Target value of the eBUS controller is < 20 °C and is blocking heating modeS.37 Fan waiting period: Fan failure in operationS.39 "Burner off contact" has triggered (e.g. contact thermostat or condensate pump)S.40 Comfort protection mode is active: Product running with limited heating comfortS.41 Water pressure > 0.6 MPa (6 bar)S.42 Flue non-return flap response blocks burner operation (only in conjunction with accessory VR40) or condensate pumpdefective; heat requirement is blockedS.44 "Return flow temperature sensor" comfort protection mode is active; product running with limited heating comfortS.46 "Flame lost at min. output" comfort protection mode is active; product running with limited heating comfortS.47 "Flame lost at max. output" comfort protection mode is active; product running with limited heating comfortS.48 "Deviating fan speed" comfort protection mode is active; product running with limited heating comfortS.53 Product is within the waiting period of the modulation block/operation block function as a result of low water pressure(flow/return spread too large)S.54 Product is within the waiting period of the operation blocking function as a result of low water pressure (temperaturegradient)S.96 Return sensor test running, heating demands are blocked.S.97 Water pressure sensor test running, heating demands are blocked.S.98 Flow/return sensor test running, heating demands are blocked.E Overview of fault codesCode Meaning CauseF.00 Flow temperature sensor interruption NTC plug not plugged in or has come loose, multiple plug on the PCBnot plugged in correctly, interruption in cable harness, NTC defectiveF.01 Return temperature sensor interruption NTC plug not plugged in or has come loose, multiple plug on the PCBnot plugged in correctly, interruption in cable harness, NTC defectiveF.10 Flow NTC short circuit NTC defective, short circuit in cable harness, cable/casingF.11 Return NTC short circuit NTC defective, short circuit in cable harness, cable/casingF.20 Safety switch-off: Temperature limiter Incorrect earth connection between cable harness and product, flow orreturn NTC defective (loose connection), black discharge via ignitioncable, ignition plug or ignition electrodeF.22 Safety switch-off: Low water pressure No or insufficient water in the product, water pressure sensor defective,cable to pump or water pressure sensor loose/not connected/defectiveF.23 Safety switch-off: Temperature difference toogreatPump blocked, insufficient pump output, air in product, flow and returnNTC connected the wrong way roundF.24 Safety switch-off: Temperature rise too fast Pump blocked, insufficient pump output, air in product, system pressuretoo low, non-return valve blocked/incorrectly installedF.25 Safety switch-off: Flue gas temperature too high Break in plug connection for optional flue gas safety temperature limiter(STB), break in cable harnessF.27 Safety switch-off: Flame simulation Moisture on the electronics, electronics (flame monitor) defective, gassolenoid valve leakingF.28 Failure during start-up: Ignition unsuccessful Gas meter defective or gas pressure monitor has triggered, air in gas,gas flow pressure too low, thermal isolator device (TAE) has triggered,condensate duct blocked, incorrect gas restrictor, incorrect spare partgas valve, fault on the gas valve, multiple plug on PCB incorrectlyplugged in, break in cable harness, ignition system (ignition transformer,ignition cable, ignition plug, ignition electrode) defective, ionisationcurrent interrupted (cable, electrode), incorrect earthing of product,electronics defectiveF.29 Failure during operation: Re-ignition unsuccess-fulGas supply temporarily stopped, flue gas recirculation, condensate ductblocked, defective earthing of product, ignition transformer has sparkfailureF.32 Fan fault Plug on fan not correctly plugged in, multiple plug on PCB not correctlyplugged in, break in cable harness, fan blocked, Hall sensor defective,electronics defective