Bedienungsanleitung Vaillant ecoTEC plus 937 (Seite 6 von 16) (Englisch)

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Operating instructions ecoTEC plus 937 / 0020031573_026

4 Operation

4.1 Overview of the operating elements

Fig. 4.1 Operating elements ecoTEC

The operating elements have the following functions:

1 Display indicating the current heating flow temperature,

the filling pressure of the heating system, the operating mode

and other additional information

2 Button „i“ for calling up information

3 Controller (accessory)

4 Pressure gauge showing the filling or operating pressure in

the heating system

5 on /off switch

6 Button „+“ to move on through the display screens

7 Button „-“ to move backwards through the display screens

and for displaying the filling pressure of the heating system

8 Button „Fault Reset“

9 Rotary knob for setting the heating flow temperature

10 Rotary knob for setting the domestic hot water temperature,

for switching the warmstart function on and off and for

switching the hot water storage function on and off

Digital information and analysis system

Fig. 4.2 Display ecoTEC

The ecoCTEC plus units are fitted with a digital informa-

tion and analysis system. This system provides informa-

tion on the operating status of your appliance and helps

you deal with problems. During normal operation, the

display (1) shows the current heating flow temperature

(in this example 45 °C). In the event of a fault, an error

code appears instead of the temperature.

You can also see the following information from the

symbols displayed:

1 The current heating flow temperature, the heating

system filling pressure or a status or error code

Flue problem

Only in combination with the vrnetDIALOG:

As long as this symbol appears in the display, a

heating feed temperature and hot water outlet

temperature is set via the vrnetDIALOG accesso-

ry, which means the appliance uses temperatures

other than those set using the rotary knobs (9)

and (10)

This operating mode can only be ended:

– via vrnetDIALOG or

– by altering the temperature setting on

the rotary knobs (9) or (10) by more than 5 K.

This operating mode cannot be ended:

– by pushing the button (8) „Fault reset“ or

– by switching the unit off or on.

Hot water preparation active

permanently on: Operating mode heating

flashes: Burner lockout time active

Hot water preparation active (only on VCW)

permanently on: Hot water being drawn-off

flashing: Hot water storage tank is being

heated, burner on

Warmstart function active

Permanently on:

– Warmstart function is in preparation

– Storage tank mode active (only on ac-

toSTOR VIH CL 15 S)

Flashing

– Warmstart in operation,

burner on

– Storage tank charging mode, burner on

Heating pump in operation

Actuating internal gas valve

Flame with cross:

Fault during burner operation; Unit is switched off

Flame without cross

Burner operation normal

4 Operation

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