32
Automatic flue gas temperature sensor check
The display shows:
"Er"
If the flue gas temperature sensor is not positioned
correctly, fault message 416 appears.
For further details regarding the flue gas temperature
sensor test, see "Repairs".
If fault message 416 appears, reposition the flue gas
temperature sensor in the flue gas connection. Check
for leaks on the flue gas side.
Note
The burner remains locked out until the test has been
passed.
When the fault has been remedied, turn the ON/OFF
switch off and back on again.
Switching WiFi ON/OFF
The appliance is equipped with an integrated WiFi
communication module with extended type plate.
The internal communication module supports commis-
sioning of the heat generator with the "Vitoguide app",
connectivity with the "ViCare app" and the connection
to the "Vitoguide" digital service centre.
The access details required for establishing a connec-
tion are recorded in the form of an access code with
"WiFi symbol"
. Three copies of this code are located
on the rear of the programming unit.
Before installing the programming unit, remove the
access code labels from the rear. For commissioning,
affix one label to the space marked out on the type
plate.
Switch on the WiFi connection and establish a connec-
tion to the router; see also page 26.
Note
If "E10" is displayed, the connection to the home net-
work could not be established. Check the router and
the network password.
If "E12" is displayed, the connection to the server
could not be established. Re-establish the connection
at a later time.
Activating the internet connection:
Operating instructions
Affix a further credentials label here, so it can be found
for subsequent use:
Fig. 21
Affix a label in the operating instructions.
Note
If the communication module is to be switched on or
off, press
simultaneously for 4 s.
Filling the heating system
Fill water
As a heat transfer medium for DHW heating, the heat-
ing water must meet fluid category ≤ 3. This require-
ment is met if water of potable quality is used as heat-
ing water. For example, if additives are used, the addi-
tive manufacturer must specify which category the
treated heating water comes under.
!
Please note
Unsuitable fill water increases the level of
deposits and corrosion and may lead to appli-
ance damage.
■
Flush the heating system thoroughly before
filling.
■
Only use fill water of potable water quality.
■
Special antifreeze suitable for heating systems
can be added to the fill water. The antifreeze
manufacturer must verify its suitability.
■
Fill and top-up water with a water hardness in
excess of over 300 ppm must be softened,
e.g. with a small softening system for heating
water.
Commissioning, inspection, maintenance
Commissioning the system
(cont.)
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