Operating instructions

Operation
Operating instructions ecoTEC plus 0020116701_00 11
4
Displayed symbols
Flame:
Permanently on: Correct burner operation; Burner on
Display of the current burner modulation rate (bar
graph display)
Display of the current filling pressure of the heating
system (bar graph display).
The filling pressure must be in the mid range
between the two dotted lines.
Permanently on: The filling pressure is within the
permitted range.
Flashing: The filling pressure is outside of
the permitted range (¬Sec-
tion 5.1.3).
Heating mode active
Permanently on: Heat demand, heating mode
Flashing: Burner on in heating mode
Hot water generation active
For VUI/VUW boilers:
Permanently on: In draw-off mode before the
burner is on
Flashing: Burner on in draw-off mode
On VU boilers:
Permanently on: time slot activated for hot water
generation
Flashing: Domestic hot water cylinder is
being heated, burner on
Only on VUI/VUW boilers:
Comfort mode active
Permanently on: Comfort mode is activated
Flashing: Comfort mode is active,
burner on
Service required. In the "Live monitor", you can
read further information about the reason for the
service (¬Section 8.2).
Additional symbols:
Summer mode active
Heating mode is switched off
Boiler anti-cycling time is active
This function is used to prevent frequent on/off
operations, and therefore contributes to prolonging
the life of your boiler.
The symbol also appears if the boiler is in a waiting
period.
F. X X
Fault in the boiler. Appears instead of the basic dis-
play (¬Section 4.4).
A plain text display explains the displayed fault
code.
Example: F.10 Flow NTC short circuit.
4.3 Operating concept
You can operate the boiler using the selection buttons and
the plus/minus buttons.
Both selection buttons have a soft key function. This means
that their function can change.
45
DHW temperature
Back
4.3 Display after pressing the left-hand selection button
If, forexample, you press the left-hand selection button in
the basic display (¬Section 4.4), the current function
switches from "
" (hot water temperature) to "Back".
With the left-hand selection button
:
– you can navigate directly to set the hot water temperature
– you can cancel the change to a set value or the activa-
tion of an operating mode
– you can go one selection level higher in the menu
With the right-hand selection button
:
– you can navigate directly to set the heating flow temper-
ature, to the precise value of the water pressure of the
heating system and to activate Comfort mode
– you can confirm a set value or the activation of an oper-
ating mode
– you can go one selection level lower in the menu