Vaillant VWL 57/5 IS Operating, Installation And Maintenance Instructions

Also see for VWL 105/5 AS S2: Operating instructions Operating instructions Operating instructions

Contents

Troubleshooting 100020257319_02 Hydraulic station Installation and maintenance instructions 399.3 Setting the flow temperature in heating mode(with no control connected)1. Press ( ).◁ The display shows the flow temperature in heatingmode.2. Change the flow temperature in heating mode by press-ing or .– Max. heating mode target flow temperature: 75 ℃3. Confirm this change by pressing (OK).9.4 Instructing the end userDanger!Risk of death from legionella.Legionella multiply at temperatures below60 °C.▶ Ensure that the end user is familiar withall of the Anti-legionella measures in orderto comply with the applicable regulationsregarding legionella prevention.▶ Explain to the end user how the safety devices work andwhere they are located.▶ Inform the end user how to handle the product.▶ Draw particular attention to the safety warnings, whichthe end user must follow.▶ Inform the end user that they must have the productmaintained in accordance with the specified intervals.▶ Explain to the end user how to check the system's watervolume/filling pressure.▶ Pass all of the instructions and documentation for theproduct to the end user for safe-keeping.10 Troubleshooting10.1 Contacting your service partnerIf you contact your service partner, please mention if pos-sible:– The fault code that is displayed (F.xx)– The status code (S.xx) that is displayed by the product inthe Live Monitor10.2 Displaying the Live Monitor (current productstatus)Menu → Live MonitorStatus codes in the display provide information on the pro-duct's current operating mode. These can be called up viathe Live Monitor menu.Status codes (→ Page 50)10.3 Checking fault codesThe display shows a fault code F.xxx.Fault codes have priority over all other displays.Fault codes (→ Page 53)If multiple faults occur at the same time, the display showsthe corresponding fault codes for two seconds each in se-quence.▶ Eliminate the fault.▶ To restart the product, press the reset button ( Operatinginstructions).▶ If you are unable to eliminate the fault and the fault re-curs despite several reset attempts, contact CustomerService.10.4 Querying the fault memoryMenu → Installer level Fault listThe product has a fault memory. You can use this to querythe last ten faults that occurred in chronological order.Display views:– Number of faults that occurred– The fault currently selected with fault number F.xxx▶ Use the or button to display the last ten faults thatoccurred.10.5 Resetting the fault memory1. Press Delete.2. Confirm that you wish to clear the fault memory bypressing OK.10.6 Using check programmesYou can also use the check programmes for troubleshooting.(→ Page 37)10.7 Resetting parameters to factory settings▶ Select Menu → Installer level → 17 → Resets to resetall of the parameters at the same time and to restore theproduct to its factory settings.10.8 Safety cut-outThe product has a safety cut-out.If the safety cut-out has tripped, the cause must be elimin-ated and the safety cut-out replaced.▶ See the "Fault codes" table in the appendix.Fault codes (→ Page 53)▶ Check the back-up heater for damage due to overheat-ing.▶ Check that the power supply for the power supply PCB isworking properly.▶ Check the cabling for the power supply PCB.▶ Check the cabling for the back-up heater.▶ Check that all temperature sensors are working properly.▶ Check that all other sensors are working properly.▶ Check the pressure in the heating circuit.▶ Check that the heating circuit pump is working properly.▶ Check whether there is air in the heating circuit.