28
Display Meaning Remedy
ERR CONN The low power radio connection to the
Viessmann appliance has been interrupted.
■
Check whether your Viessmann appliance
is switched on.
■
Check whether "low power radio" on your
Viessmann appliance is activated.
Operating instructions for the Viess-
mann appliance
■
Check the signal strength of the "low pow-
er radio" in the "DEV INFO" menu of your
Vitotrol 100-E: See page 27.
■
If necessary, move the Vitotrol 100-E to a
different installation location: See page 11.
■
Restart the Vitotrol 100-E: See page 29.
■
Switch your Viessmann appliance off and
on again.
Operating instructions for the Viess-
mann appliance
■
Return your Vitotrol 100-E to the factory
settings: See page 26.
Repeat the commissioning process: See
page 15.
ERR SYS
and an exclamation
mark
A fault has occurred on the connected
Viessmann appliance.
Find out about the fault on the display of the
Viessmann appliance and notify your con-
tractor.
Operating instructions for the Viess-
mann appliance
ERR DEV A fault has occurred in the Vitotrol 100-E. Replace the Vitotrol 100-E.
The batteries have nearly run out. Replace the batteries; see page 31.
Diagnosis and service checks
Messages shown on the display (cont.)
6192459
Diagnosis
To Next Page
Loading...
