Screed Drying" Is Displayed; External Hook-Up" Is Displayed; External Program" Is Displayed; Ext. Set Room Temperature" Is Displayed - Viessmann VITOTROL 300 RF Operating Instructions Manual

"Screed drying" is displayed

Cause
The screed drying function is enabled.

"External hook-up" is displayed

Cause
The operating program was changed by
an external device (e.g. connection ex-
tension).

"External program" is displayed

Cause
The operating program has been
changed by the Vitocom communication
interface.

"Ext. set room temperature" is displayed

Cause
A set room temperature has been input
via the Vitocom communication interface.
You can change the standard room tem-
perature (see page 19). This will cancel
the external hook-up.

" " and " " are displayed

Cause
Wireless connection interference or inter-
ruption.
Remedy
Wait until the function terminates (can
take up to 30 days).
Remedy
No rectification is required. The operating
program has been manually set to
change over.
Remedy
You can change the operating program.
Follow the instructions in the menu.
Remedy
—
Remedy
Inform your local heating contractor.
What to do if...
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