Using The Function Menu - Vaillant ECOTEC PLUS VU 80 Installation And Maintenance Instructions Manual

13.2.1 Filling the boiler and the heating
installation
A description of how to fill the boiler and heating installa-
tion is given in section 9.3.1.
13.2.2 Draining the boiler
> Switch the boiler off with the on/off button.
> Close the service valves of the boiler.
> Start the check programme P.6.
> Open the drain valves on the service valves.
13.2.3 Draining the entire heating installation
> Attach a hose to the draining device on the system.
> Bring the open end of the hose to an appropriate drain
point.
> Start check programme P.6 (¬ section 11.4).
> Make sure that the service valves of the boiler are open.
> Open the drain cock.
> Open the purging valves on the radiators.
Start from the highest radiator and then work from the
top to the bottom.
> Once the water has drained off, close the purging valves
of the radiators and the drain cock.
13.3

Using the function menu

You can use the function menu to service the ecoTEC plus
as it allows you to control individual components of the
heating installation. In addition, the function menu offers a
programme for purging the heating circuit and the hot
water circuit.
Menu ¬ Installer level ¬ Test programmes ¬ Function
menu
> Use the minus button
to go to the components of the heating
installation.
> Confirm your selection using the right-hand selection
button ("Select").
Cancelling the function test
> Press the left-hand selection button
(" Cancel") to stop the function test.
You can test the operation of the heating installation com-
ponents listed below using the self-tests in the function
menu.
ecoTEC plus installation and maintenance instructions 0020134823_01
or the plus button
Inspection and maintenance
Test pro-
Display
grammes
T.01 Check internal
pump
T.03 Check fan
T.04 Check cylinder
charge pump
T.06 Check external
pump
T.08 Check burner
13.3 Self-tests in the function menu
13.3.1 Testing components
If you have opened the function menu, you can select vari-
ous self-tests. You can use these self-tests to check the
function of the following components of the heating instal-
lation or to purge the heating circuit.
You can select the following self-tests:
Test programmes Action
Check pumps of You can switch the pump on and off.
the pump group
Check fan You can switch the fan on and off. The fan
runs at maximum rotational speed.
Check charging You can switch the cylinder charging pump on
pump and off.
Check external You can switch the external pump on and off.
pump
Check burner The unit starts, carries out the necessary self-
test and switches to minimum load.
The display shows the status and the temper-
ature in turn (alternatively the pressure). If a
fault occurs, the display shows the corre-
sponding fault code.
End function You can exit the function menu here.
menu
The plain text display shows the current mode.
If you do not press any buttons for more than 15 minutes, test
mode is ended automatically.
13.4 Self-tests in the function menu
Action
You can switch the internal pump on
and off.
You can switch the fan on and off.
The fan runs at maximum rotational
speed.
You can switch the cylinder charging
pump on and off.
You can switch the external pump on
and off.
The boiler starts, carries out the nec-
essary self-test and switches to mini-
mum load.
The display shows the status and the
temperature in turn (alternatively the
pressure). If a fault occurs, the dis-
play shows the corresponding fault
code.
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