Manual Vaillant ecoTEC plus 637 (page 6 of 16) (English)

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6 Instructions for use ecoTEC

4 Operation

4.1 Overview of controls on ecoTEC plus

bar

iFP

Fig. 4.1 ecoTEC plus controls

For access to the controls open the front flap by pulling

at the centre of the case strip.

1 Display indicating the current heating flow tempera-

ture, the pressure in the heating system, the operat-

ing mode or additional information

2 The “i” information button

3 Built in control/timer (if fitted)

4 Pressure gauge displaying the pressure in the heat-

ing system

5 Main ON/OFF control

6 “+” button for moving forward in the display

7 “-” button for moving back in the display or for dis-

playing the pressure in the heating system

8 “Reset” button

9 Maximum radiator temperature control

10 Maximum hot water temperature control and warm-

start ON/OFF control (ecoTEC plus combination boil-

ers only)

Advanced multifunctional display system

bar

iFP

Fig. 4.2 Display on ecoTEC plus

The ecoTEC plus appliance is fitted with a digital infor-

mation and analysis system. This system provides infor-

mation on the operating status of your appliance.

During normal operation, the display (1) shows the cur-

rent heating flow temperature (in this example 45 °C). In

the event of a fault, an error code appears instead of the

temperature.

The display also gives the following information:

1 Indication of the current heating system flow

temperature or water pressure in the heating

system or display of a status or error code

Fan speed malfunction

As long as this symbol appears in the display, a

heating flow temperature and hot water outlet

temperature is set by the vrnetDIALOG accesso-

ry, which means the appliance uses temperatu-

res other than those set using the controls (9)

and (10).

This condition can only be ended:

- using vrnetDIALOG or

- by a change in temperature at controllers (9)

or (10) of more than ±5 K.

This condition cannot be ended:

- with the "Reset" button (8) or

- by turning the appliance off or on.

Heating mode active

Illuminated: Heating mode

Flashing: Anti cycling mode active

4 Operation

Hi Paul is my name,
My 637 system boiler is not showing any display on display just blank
Can you help please Submitted on 16-1-2022 at 16:02
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Vaillant ecoTEC plus 637 Manual

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