Vaillant ecoTEC pro 24 Installation And Maintenance Instructions Manual

Also see for ecoTEC pro 24: Instructions for use Instructions for installation and servicing Instructions for installation and servicing Instructions for installation and servicing

Appendix36 Installation and maintenance instructions ecoTEC pro 0020244995_02Statuscode MeaningS.42 Flue non-return flapclosedFlue non-return flap return signal blocks burner operation (only in conjunction with the multi-functionalmodule) or condensate pump defective, heat demand is blocked.S.46 Comfort protection: Min-imum load, loss of flameComfort protection mode for flame loss at minimum load is activated.S.53 Waiting time: WatershortageThe product is within the waiting period of the modulation block/operating block function as a result ofa water deficiency (flow/return spread too large).S.54 Waiting time: WatershortageProduct is in the waiting period of the operation blocking function as a result of low water pressure(temperature gradient).S.57 Waiting time: MeasuringprogramThe product is within the waiting period as a result of the measuring programme.S.58 Burner modulation limit-ationThe burner modulation limitation is activated.S.61 Fault: Incorrect gas type The coding resistor on the PCB does not match the entered gas group (see also F.92).S.62 Adjust CO2 Set the CO2 content.S.63 Fault: Check gas route A fault message is activated. Check the gas route.S.76 Service message: Checkwater pressureA service message is activated. Check the water pressure.S.88 Purging programme isrunningThe purge programme is activated.S.92 Water circulation volumeself-testThe self-test for the water circulation volume is activated.S.93 Flue gas measurementnot possibleFlue gas analysis is not currently possible.S.96 Return temperaturesensor self-testThe self-test for the return temperature sensor is activated.S.97 Water pressure sensorself-testThe self-test for the water pressure sensor is activated.S.98 Flow/return temperaturesensor self-testThe self-test for the flow/return temperature sensor is activated.S.99 Vaillant self-test The Vaillant self-test is activated.C Overview of fault codesNoteSince the code table is used for various products, some codes may not be visible for the product in question.Message Possible cause MeasureF.00 Interruption: Flow sensor Flow temperature sensor de-fective or not connected▶ Check: Flow temperature sensor, plug, cable harness, PCB.F.01 Interruption: ReturnsensorReturn temperature sensor de-fective or not connected▶ Check: Return temperature sensor, plug, cable harness, PCB.F.10 Short circuit: FlowsensorFlow temperature sensor de-fective or has short-circuited▶ Check: NTC plug, cable harness, cable/housing, PCB, NTCsensor.F.11 Short circuit: ReturnsensorReturn temperature sensor de-fective or has short-circuited▶ Check: NTC plug, cable harness, housing, PCB, NTC sensor.F.20 Safety switch-off: Tem-perature limiterMaximum temperature at theflow/return temperature sensoris too high when the safety cut-out function is operating usingthe NTC▶ Check: Flow temperature sensor (correct thermal connection),cable harness, sufficient purging.F.22 Safety switch-off: Lowwater pressureNo/insufficient water in theproduct or the water pressure istoo low1. Check: Plug, cable to heating pump or water pressuresensor, water pressure sensor, heating pump.2. Activate and purge check programme P.0.F.23 Safety switch-off:Temp.spread too largeTemperature spread too great.Water circulation too low▶ Check: Plug, cable to heating pump/water pressure sensor,air/insufficient water in the heating circuit, flow and return tem-perature sensor inverted, strainer in the hydraulic block, waterpressure sensor, heating pump (sufficient circulation, level 2:D.19, D.14, non-return valve). Activate check programme P.0.