Checking The Heating Mode; Checking Hot Water Generation (Vuw Boilers Only); Checking Hot Water Generation (Vu Boilers Only); Dhw Mode - Vaillant ecoTEC plus SERIES Installation And Maintenance Instructions Manual

> Start up the boiler in accordance with the relevant oper-
ating instructions.
If you have still not successfully completed the installation
assistant and subsequently confirmed this, it will be
restarted when you switch on the boiler. Before continuing,
complete the installation assistant (¬ section 10.2).
10.8 Checking for leaks
> Check the gas supply line, the flue gas installation, the
heating installation and the hot water pipes for leaks.
> Check the air/flue gas duct for correct installation.
> Make absolutely sure that the front casing is properly fit-
ted.
> Check the heating mode (¬ section 10.12.1)
> Check the operation of the hot water generation
(¬ section 10.12.2 and 10.12.3)
You can display the current operating condition of the
boiler in the "Live monitor" on the boiler display
(¬ section 13.2.1).
Menu ¬ Live monitor

10.12.1 Checking the heating mode

> Switch on the boiler.
> Make sure that there is a heat requirement.
> Activate the Live monitor (¬ section 13.2.1).
Installation and maintenance instructions ecoTEC plus 0020116700_01
S.04
Heating mode
Burner on
Back
10.9 Live monitor – display during heating mode
If the boiler is operating correctly, the display will show sta-
tus code "S.04". The status code displayed will also be
explained by the plain text display "Heating mode: Burner
on".
10.12.2 Checking hot water generation
(VUW boilers only)
> Switch on the boiler.
> Open a hot water valve all the way.
> Activate the Live monitor (¬ section 13.2.1).
If hot water generation is working correctly, the display
shows "S.14". The displayed status code is also explained by
the plain text display "DHW mode: Burner on".
S.14

DHW mode

Burner on
Back
10.10 Display during hot water generation (VUW boilers only)
10.12.3 Checking hot water generation
(VU boilers only)
> Switch on the boiler.
> Switch on the connected domestic hot water cylinder.
> Make sure that the cylinder thermostat is requesting
heat.
> Activate the Live monitor (¬ section 13.2.1).
If the cylinder is being charged correctly, status code "S.24"
appears in the display. The status code that is displayed is
also explained by the plain text display "DHW mode: Burner
on".
Start-up 10
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