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In maintenance mode, the fuel cell module is shut
down. Power and heat generation is switched OFF.
To prepare for servicing, you can switch on mainte-
nance mode after consulting your heating contractor.
Start the process at least 2 hours prior to servicing.
This enables the contractor to begin the service with-
out delay.
Tap the following on-screen buttons:
1.
2. "Fuel cell"
3. "Maintenance mode ON"
4. to confirm
Restoring factory settings
You can reset all entries and values to their factory set-
tings.
Note
If the heating circuits have been named, the assigned
names will be retained: See page 37.
Settings and values that will be reset:
Set normal room temperature
Set comfort room temperature
Set reduced room temperature
Operating program
Set DHW temperature
Time program for central heating
Time program for DHW heating
Time program for DHW circulation pump
Heating curve slope and level
Extended heating is deleted.
Holiday program and Holidays at home
Tap the following on-screen buttons:
1.
2. "Settings"
3. "Factory settings"
4. to confirm
Further adjustments
Starting maintenance mode
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