Vaillant ecoTEC plus Instructions For Installation And Servicing

Also see for ecoTEC plus 415: Instructions for use Instructions for installation and servicing Instructions for installation and servicing

Vaillant ecoTEC plus Instructions For Installation And Servicing Manual pdf 44 page image

Installation and Servicing ecoTEC plus4410.2 Test programsSpecial functions can be triggered on the appliancesby activating various test programs.These programs are given in detail in the Table 10.5.• The test programs P.0 to P.6 will be started when“Power ON” is turned on and the “+” key is pressedfor 5 s. The display shows “P.0”.• Press the “+” key to start counting the test numberupwards.• Press the “i” to operate the appliance now and tostart the test program.• Press “i” and “+” simultaneously to exit the testprograms. You can also exit the test programs by notpressing any key for 15 minutes.Display MeaningP.0 Bleeding test program. The heating circuit andhot water circuit (when accessories are fitted) isbled via the automatic air vent (the cap on theautomatic air vent must be loosened).P.1 Test program where the appliance is operated infull load after successful ignitionP.2 Test program where the appliance is operated withminimum gas volume (ignition gas volume) aftersuccessful ignitionP.3 Not availableP.4 Not availableP.5 Test program for the safety temperature limitcheck; appliance heats up by by-passing aregulating shut down through the flow regulatoruntil the shut off temperature of 97 °C is achieved.P.6 Filling test program. The diverter valve moves tothe centre position10.3 Resetting parameter to factory settingsBesides the option to reset individual parametersmanually to the factory settings specified in tables10.2 and 10.3, you can also reset all parameterssimultaneously.• In the second diagnostic level, under the diagnosticnumber “d.96” change the value to 1(see section 10.1.2).The parameters of all adjustable diagnosticnumbers now correspond to the factory settings.Table 10.5 Test programs10 Troubleshooting11 Parts Replacement11 Parts replacementThe tasks listed below in this section may be carriedout only by a qualified engineer.• Only use genuine spare parts for repairs.• Make sure the parts are correctly fitted and thattheir original position and alignment are retained.11.1 Safety instructionsDanger!Each time the components are replaced,comply with the safety instructions belowfor your own safety and to avoid damage to theappliance!• Put the appliance out of operation.Note!Before starting any maintenance work: Isolatethe mains electricity supply by disconnectingthe plug at the socket outlet (if there is onlyan isolating switch remove the fuse from theswitch).Close the service valve in the gas supply.Isolate the boiler flow and return if possible.Empty the appliance if you want to replace waterbearing components of the appliance!Make sure that no water drops on live components(e.g. switch box etc.)!Use only new seals and O-rings!After completing the work, check for gas leaks andperform a function check (see section 7)!Always check earth continuity, polarity and resistanceto earth with a multimeter after any service work andafter exchanging any electrical component.11.2 Replacing the burner.For access refer to section 8.1.4.Remove the burner refer to section 8.1.611.3 Replacing the gas valveFor access refer to section 8.1.4.Remove the gas valve, fan and burner refer to therelevant parts of section 8.1.6.Before removing the gas valve note its position on thefan. Remove the three securing screws, which fix thegas valve, plastic swirl plate to the venturi on the fan.Remove the gas valve.Remove the gas supply pipe from the gas valve.When refitting the gas valve take care as it can befitted more than one way.After assembly test for gas soundness and purgein accordance with the current issue of BS6891 orin IE, the current edition of I.S.813 “Domestic GasInstallations”.11.4 Replacing the fanRemove the gas valve refer to section 11.3.Remove the venturi plate secured with three screwsand remove the two screws securing the fan to the gasmanifold, see fig 11.1.Check the gasket and replace if necessary.