Vaillant aquaPlus Instructions For Installation And Servicing

Also see for aquaPlus: Installation instructions

Vaillant aquaPlus Instructions For Installation And Servicing Manual pdf 38 page image

10 Fault findingInstructions for installation and servicing aquaPLUS VUI 362-738Display IndicationS.00 No heat demand (heating operation)S.01 Fan running (heating operation)S.02 Pump running (heating operation)S.03 Ignition sequence (heating operation)S.04 Burner ignited (heating operation)S.05 Fan and water pump over run (heating operation)S.06Fan over run (heating operation)S.07 Pump over run (heating operation)S.08 Anti cycling mode (heating operation)S.10 Hot water demand (hot water operation)S.11 Fan running (hot water operation)S.13 Ignition sequence (hot water operation)S.14 Burner ignited (hot water operation)S.15 Fan and water pump over run (hot water operation)S.16Fan over run (hot water operation)S.17 Pump over run (hot water operation)S.20 Store rechargingS.21 Fan running (store charging)S.23 Ignition sequence (store charging)S.24 Burner ignited (store charging)S.25 Fan and water pump over run (store charging)S.26Fan over run (store charging)S.27 Pump over run (store charging)S.28 Anti cycling mode (store charging)S.30 No heating demand from external controlsS.31 Summer mode (heating control knob in off position)S.32 Main heat exchanger anti freeze protection due to fan speed deviation too greatS.33 Check air/flue systemS.34 Frost protection modeS.36No heating demand from external controlsS.39 Contact thermostat has been activated (under floor systems)S.53 Delay mode due to lack of water in system (~2,5 mins.)S.54 Delay mode due to flow temperature gradient too steep (approx 10 mins.)Table 10.1: Status modes10.3 Status ModeThe status mode provides information about the currentoperating status of the boiler.To display status mode proceed as follows:• Press the "i" button below the display, and a statuscode will appear in the display indicating the currentoperational status of the boiler (see table below).To cancel the status code mode proceed as follows:• Press the "i" button below the displayor• Do not press any key for approximately four minutes.The display will now revert back to showing thecurrent flow temperature.Supplied by HeatingSpares247.com