Vaillant ecoTEC SERIES Operating Manual

Also see for ecoTEC SERIES: Installation manual Installation manual Instructions for use Instructions for use Instructions for use

Contents

Vaillant ecoTEC SERIES Operating Manual Manual pdf 14 page image

Operating manual ecoTEC 0020052777_0014Display MeaningDisplays during heating operationS. 0 Heating, no heat demandS. 1 Heating mode, fan start-upS. 2 Heating mode, pump flowS. 3 Heating mode, ignitionS. 4 Heating mode, burner onS. 6 Heating mode, fan overrunS. 7 Heating mode, pump overrunS. 8 Heating, remaining cut-off time xx minS.31 no heat demand, summer operating modeS.34 Heating mode, frost protectionDisplays in storage tank chargingS. 20 Hot water requirementS.22 Hot water handling, pump flowS.24 Hot water operation burner onService message (appears as necessary and replacesthe normal status text)S.85 Service message, quantity of circulation waterTable 4.1 Status codes and what they mean (selection)4.7 TroubleshootingIf you have problems operating your gas-fired wall-mounted boiler, you can check the following pointsyourself:No hot water, heating stays cold; Appliance does notstart:– Are the gas isolator cocks for the building supply andthe appliance open (see Chapter 4.2.1)?– Is the power supply switched on?– Is the main switch on the gas-fired wall-mounted boil-er switched on (see Chapter 4.3)?– Is the rotary knob for setting the feed temperature onthe gas-fired wall-mounted boiler not turned to the farleft, i.e. frost protection active (see Chapter 4.4)?– Is the filling pressure of the heating installation suffi-cient (see Chapter 4.2.2)?– Is there air in the heating installation?– Is there a fault in the ignition process (see Chap-ter 4.7.2)?Hot water operation, no problem; Heating does notstart:– Has the external controller (e.g. calorMATICcontroller) signalled a heat requirement (see Chap-ter 4.5.4)?a Caution!Inappropriate alterations can cause damage!If your gas-fired wall-mounted boiler is still notworking properly after you have checked theabove points, consult a recognised expert tech-nician company or Vaillant Service Solutionsfor advice.4.7.1 Faults due to water deficiencyThe device switches to "Fault" if the filling pressure inthe heating system is too low. This malfunction is indi-cated by the fault codes "F.22" (dry fire) or "F.23" or"F.24" (water shortage). You can only start up the ap-pliance again when the heating system is sufficientlyfilled with water.If the pressure drops frequently the reason for the lossof hot water must be identified and eliminated by a rec-ognised expert technician company.4.7.2 Faults in ignition12Fig. 4.13 TroubleshootingIf the burner fails to ignite after five attempts, the unitwill not operate and switches to "Fault". This is indicat-ed by the error code "F.28" or "F.29" on the display.In addition, the display shows a flame symbol with across through it (1).Automatic ignition can only take place after you manu-ally reset the fault.• In this case, press the fault suppression button (2)and hold it down for roughly one second to reset thefault.4 Operation