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_02409.1.3 Error codesThe error codes displace all other displays when errorsoccur.If many errors occur simultaneously, the relevant errorcodes are displayed alternately for approx. 2 secondseach.9.1.4 Error memoryThe last ten errors are saved in the appliance errormemory.• Press the "i" and "-" buttons simultaneously.• Scroll back in the error memory with the "+" button.Code Meaning CauseF.0 Interruption feed temperature sensor (NTC): NTC faulty, NTC cable faulty, faulty plug connection on NTC,faulty plug connection on the electronicsF.1 Interruption return temperature sensor (NTC): NTC faulty, NTC cable faulty, faulty plug connection on NTC,faulty plug connection on the electronicsF.10 Short-circuit in feed temperature sensor Sensor plug has mass short to the casing, short-circuit inwiring loom, sensor faultyF.11 Short-circuit in return temperature sensor Sensor plug has mass short to the casing, short-circuit inwiring loom, sensor faultyF.13 Short-circuit on heat retention storage tank sensor Sensor plug has mass short to the casing, short-circuit inwiring loom, sensor faultyF.20 Safety temperature limiter actuated Flow probe not connected thermally correct or defective,appliance does not shut downF.22 Dry fireToo little water in the appliance, water shortage switch defective,cable to pump or water shortage switch defective, pump blockedor defective, pump output too lowF.23 Water shortage, temperature spread betweenflow and return probe too largePump blocked or defective, pump output too low, flow and returnsensor swapped overF.24 Water shortage, temperature rise too quick Pump blocked, low output from the pump, air in appliance, systempressure too lowF.25 Interruption in cable harness Cable harness faultyF.27 External light: Gas solenoid valve defective, flame detector defectiveF.28 Appliance does not start: Attempts to igniteduring start failedFaults in the gas supply such as:- Gas meter or gas pressure detector defective- Air in gas- Gas flow pressure too low- Main gas cock closedFaults in the gas fitting, wrong gas setting, igniter (ignitiontransformer, ignition cable, ignition plug) defective, ionisationcurrent stopped (cable, electrode), faulty earthing in appliance,electronics defectiveF.29 Flame goes off during operation and subsequentignition attempts failedGas supply temporarily stopped, ignition transformer has sparkfailure, faulty earthing of applianceF.32 Speed deviation Fan Fans blocked, plug not inserted correctly on fan, hall sensordefective, fault in cable harness, electronics defectiveF.49 eBUS undervoltage Short-circuit on eBUS input, eBUS overload or two powersupplies with different polarities on the eBUSF.61 Gas valve control faultyShort-circuit to mass in cable harness to the gas valves,installation fault on gas valve (short-circuit, mass short in the coils)electronics faultyF.62 Gas valve shutoff delay defective Gas fitting leaking, electronics defectiveF.63 EEPROM faulty Electronics defectiveF.64 Electronics/sensor fault Short-circuit in flow or return sensor or electronics defectiveF.65 Electronics temperature too high Electronics too hot due to external effect, electronics defectiveF.67 Flame monitor input signal is outside the limits (0 or 5 V) electronics defectiveF.70 No valid appliance variant for display and/or electronics Spare part case: Display and electronics changed at the sametime appliance variant not re-setTable 9.4 Error codesYou can exit the error memory display as follows:• Press the "i" button or• Do not press any button for about 4 minutes.The current heating flow temperature appears in thedisplay again.9 Troubleshooting