Vaillant ecoVIT exclusiv VKK 226/4-H Operating Instructions Manual

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Vaillant ecoVIT exclusiv VKK 226/4-H Operating Instructions Manual Manual pdf 14 page image

Appendix14 Operating instructions ecoVIT exclusiv 0020258609_00AppendixA Status codesNoteSince the code table is used for various products, some codes may not be visible for the product in question.Statuscode MeaningS.00 Heating: No heat de-mandHeating has no heat demand. The burner is off.S.01 Heating mode: Fan start-upThe fan start-up for heating mode is activated.S.02 Heating mode: Pumppre-runThe pump prerun for heating mode is activated.S.03 Heating mode: Ignition The ignition for heating mode is activated.S.04 Heating mode: BurneronThe burner for heating mode is activated.S.06 Heating mode: Fan over-runThe fan overrun for heating mode is activated.S.07 Heating mode: PumpoverrunThe pump overrun for heating mode is activated.S.08 Heating mode: Anti-cyc-ling timeThe anti-cycling time for heating mode is activated.S.20 DHW demand The domestic hot water demand is activated.S.22 DHW mode: Pump pre-runThe pump prerun for domestic hot water mode is activated.S.24 DHW mode: Burner on The burner for domestic hot water mode is activated.S.27 DHW mode: Pump over-runThe pump overrun for domestic hot water mode is activated.S.31 No heat demand: Sum-mer modeSummer mode is activated; there is no heat demand. The external control blocks heating mode.S.34 Heating mode: Frost pro-tectionThe frost protection function for heating mode is activated.B TroubleshootingSymptom Possible cause MeasureNo hot water, heating stays cold No gas 1. Check whether the gas stopcock in the building and the gasstopcock on the product are open.2. Open one or both of the gas stopcocks.Installation isolator is closed 1. Check whether one of the isolators is closed.2. Ask a competent person whether closed isolators can beopened again.No power supply 1. Check whether the power supply to the building and the mainswitch on the product are switched on.2. Switch on the power supply to the building and the mainswitch on the product.The display shows S.39 "Con-tact thermostat activated" (e.g.by the condensate pump or thesurface-mounted thermostat inthe underfloor circuit)1. Clean the condensate pump with clean water in accordancewith the operating instructions for the condensate pump orcontact your approved heating specialist company.2. Contact an approved heating specialist company.Filling pressure in the heatinginstallation too low. F.22"Waterpressure too low" appears inthe display1. Fill the heating installation. (→ Page 11)2. If the pressure drops too frequently, contact an approvedheating specialist company. The cause of the loss in heatingwater must be established and eliminated.

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