Overview Of Checks; Status Checks - Viessmann Vitodens 100 Series Installation And Service Instructions Manual

Diagnostics
Function sequence and possible faults
Yes
Burner in opera-
tion
Resetting the appliance
Press MODE and OK simultaneously
and hold until Ð flashes (reset).

Overview of checks

Display
IF
Ct
AL
Time program for DHW heating
and heating mode, see operat-
ing instructions.
The submenu for DHW heating
is only displayed when a hot
water time is set.

Status checks

Check
Current system pressure
Actual heating water temperature
62
No
Shuts down below
the set boiler water
temperature and
restarts immediate-
ly
Area
Status checks (current/set values), see page 62
Meter checks, see page 64
Fault history (10 most recent fault messages)
For the meaning of the fault messages, see "Fault display" from
page 66
(cont.)
■ Use / to select the required check.
– The selected check is shown on
the additional display.
– The value to be checked is shown
on the main display.
■ Press MODE to select the required
areas.
Display Symbols
Flashing
"IF00"
"IF01"
Check the flue
system for leaks
(flue gas recircula-
tion); check the
gas flow pressure
Constant
MPa
°C