Vaillant ECOTEC EXCLUSIVE 627 VU 256/5-7 Installation And Maintenance Instructions Manual

Vaillant ECOTEC EXCLUSIVE 627 VU 256/5-7 Installation And Maintenance Instructions Manual Manual pdf 26 page image

9 Troubleshooting26 Installation and maintenance instructions ecoTEC exclusive 0020193966_01Position of theadjusting screwPres-surein MPa(mbar)Notes/application5 further turns tothe left from themid-position0.017(170)If noises are produced inthe radiators or radiatorvalves▶ Install the front casing.8.6 Handing the product over to the operator▶ When you have finished the installation, affix the en-closed sticker (which requests that the user reads theinstructions) to the front of the product in the operator'slanguage.▶ Explain to the operator how the safety devices work andwhere they are located.▶ Inform the operator how to handle the product.▶ In particular, draw attention to the safety informationwhich the operator must follow.▶ Inform the operator that they must have the productmaintained in accordance with the specified intervals.▶ Pass all of the instructions and documentation for theproduct to the operator for safe-keeping.▶ Inform the operator about measures taken to ensure thesupply of combustion air and flue gas guiding, and in-struct the operator that he must not make any changes.▶ Inform the operator that they must not store or use ex-plosive or highly flammable substances (such as petrol,paper or paint) in the installation room of the product.▶ Complete and sign off the Benchmark commissioningcheck list.▶ Complete and sign off the guarantee documentation.9 Troubleshooting9.1 Comfort protection mode for the heat cellConditions: Neither nor a fault code F.xx are shown in the displayUnusual operating noises are emitted from the heat cell inthe product.▶ Check whether S.40 is displayed in Live monitor.If S.40 is displayed, the product is in a temporary test mode,which it again exits automatically.Conditions: is displayed.The Live monitor shows S.40 and D.118 is at 0. The heatcell is in permanent comfort protection mode. This is notcaused by the all-gas sensor.▶ Decommission the product and check the entire air/fluepipe.▽ Are there any blockages or leaks?▶ Eliminate the cause.▽ Are any components damaged?▶ Replace the defective components.▶ If the air/flue pipe is OK, restart the product.▶ Prepare the flue gas analyser for checking the recircula-tion.◁ The measuring probes must be rinsed and must notbe contaminated by a previous measurement.▶ Check for recirculation at the air test point. The followingmeasured values are indicators of recirculation.– Oxygen value in the intake air: < 20 vol. %– Intake air CO value: ≥ 100 ppm▽ Recirculation is present.▶ Eliminate the deficiencies in the air/flue pipe.▽ No recirculation is present.▶ Ensure that there is a heat requirement. In theLive Monitor, check whether the product has thestatus S.4 or S.14.▶ If the combustion values are not OK, carry out checkprogrammes P.4 and P.14.Conditions: and F.55 are displayedThe Live monitor shows S.40 and D.118 ≥ 1. The heat cellis in permanent comfort protection mode.▶ Check and, if required, replace the all-gas sensor.9.2 Checking service messages▶ To obtain further information, call up the Live monitor.(→ Page 17)Conditions: S.40 is displayedThe product is in Comfort protection mode. The product hasdetected a temporary fault and continues to run with restric-ted comfort. The product switches back to the normal operat-ing mode.▶ To establish whether or not a component is defective,read the fault memory. (→ Page 27)NoteIf no fault message is present, the product willautomatically switch back to normal operatingmode after a certain time.Conditions: S.86 is displayedThe product remains in comfort safety mode and does notswitch back to normal operating mode.▶ Check the component that is mentioned and, if required,replace it.▶ To establish whether or not a component is defective,read the fault memory (→ Page 27).appears if you have set a maintenance interval, for ex-ample, and this has passed or a service message is issued.