9
Operating manual ecoTEC 0020052777_00
10
Rotary knob for specifying the storage tempera-
ture (in conjunction with VU units with connect-
ed domestic hot water cylinder VIH)
Digital Information and Analysis System (DIA)
1
Fig. 4.2 Display ecoTEC
A Digital Information and Analysis System is fitted in
ecoTEC units. This system provides information on the
operating status of your appliance and helps you deal
with problems.
During normal operation, the display (
1
) shows the cur-
rent heating feed 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 heat-
ing 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, the
heating feed temperature and hot water outlet
temperature are specified by vrnetDIALOG (ac-
cessory), which means the unit operates at tem-
peratures 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 at the rota-
ry knobs (
9
) or (
10
) by more than
±
5 K.
This operating mode can
not
be ended:
- by pushing the button (
8
) "Fault reset"
or
- by switching the unit on or off.
Hot water preparation active
permanently on: Operating mode heating
flashes:
Burner lockout time active
Hot water preparation active
permanently on:
recharging operating
mode on standby
Flashing:
Hot water storage tank
is being heated, burner
on
Internal pump is in operation
Actuating internal gas valve
Flame with cross:
Fault during burner operation;
Unit is switched off
Flame without cross:
Burner operation normal
Operation 4
