Factory Settings - Dd2+ Reset; Solid Fuel Boiler Systems - OEG DD2+ Handbuch

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Access to parameter S3.1 is possible in the following way. Hold
key
hear a beep. On the display appears parameter (S3.1). Now it's
possible to modify this or any other parameter.

Factory settings - DD2+ reset

To restore the factory settings
hold keys and
20 seconds (Picture 16). Release
keys after you hear a beep.

Solid fuel boiler systems

If the solid fuel has burned down, DD2+ signalizes it with symbol
on display and periodic beep sounds every 20 seconds.
Signalisation of burned down solid fuel is active only in day temp-
erature mode heating period.
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Applies only to schemes from 408 to 413.
for 20 seconds (picture 15) Release the key after you
Picture 15
for approx.
Picture 16
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SETTING MANUAL