Vaillant ecoTEC plus 937 Operating Manual - page 6
Operating instructions ecoTEC plus 937 / 0020031573_02
6
4 Operation
4.1
Overview of the operating elements
1
10
9
8
7
6
2
3
4
5
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
1
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
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 cannotbe 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