Vaillant VRT 350 Operating Instructions Manual
Also see for VRT 350: Installation instructionsOperating instructionsOperating instructionsInstallation instructions
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Operating and display functions 50020135485_00 VRT 350 Operating instructions 255.4 Special operating modesThe advanced functions can be activated directly fromany mode using the right-hand selector button «Operat-ing mode».The path details given at the start of each advanced func-tion description indicate how you can access this advancedfunction in the menu structure.5.4.1 Cylinder boost«Operating mode» → «Cylinder boost»– If you have switched off hot water generation or requirehot water outside a time period, activate the «Cylinderboost »advanced function. The advanced function heatsthe water in the domestic hot water cylinder once, un-til the set desired «Hot water circuit» temperature isreached or until you cancel the advanced function early.The heating system will then return to the pre-set mode.5.4.2 Party«Operating mode» → «Party function»– If you want to switch on the heating circuit and hot wa-ter generation temporarily, e.g. during a party, activatethe advanced function «Party».This means you do not need to change the settings on theheating system for short periods of time. The advancedfunction brings the room temperature to the set desired«Day» temperature, in accordance with the set time peri-ods.If the display shows «Party function active», you can usethe rotary knob to set the desired «Day» temperature forthe heating circuit.The advanced function is deactivated when the next timeperiod is reached or if you cancel the advanced functionearly. The heating system will then return to the pre-setmode.5.4.3 1 day away from home«Operating mode» → «1 Day away from home»– If you are only away from home for one day, e.g. for aday trip, activate the «1 Day away from home» advancedfunction. This means you do not need to change the timeperiods that you have set by increasing the room tem-perature during the day, for example. This advancedfunction brings the room temperature to the desired«Set-back» temperature.Hot water generation is switched off and frost protection isactivated.If the display shows «1 Day away from home active», youcan use the rotary knob to set the desired «Set-back» tem-perature for the heating circuit.The advanced function is automatically deactivated after24:00 hours or if you cancel the advanced function first.The heating system will then return to the pre-set mode.5.5 Messages5.5.1 Service messageIf a service is required, the controller displays a servicemessage in the display.Caution!Risk of damage to the heating installa-tion due to failure to perform mainten-ance work.A service message indicates that the heat-ing installation must be serviced by theskilled tradesman. Failure to observe theseservice messages could lead to materialdamage or failure of the heating installa-tion.▶ If the controller displays a service mes-sage, inform a skilled tradesman.Service Heat Generator 1Desired temperature 20,0°CMenu Mode°C22,5Image 5.4: Example of a service messageThe following service messages may appear:– «Boiler service»– «Service» (of the heating installation)5.5.2 Fault messageIf a fault occurs in the heating system, the controller dis-plays a fault message in the display. |
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