switches were set to “Night mode” or Heating circuit(s) deactivated” or “DHW heating un- changed”.
Function | WE | Configuration |
Locking manual levels | OFF | FB34 = ON |
7.12 Setting a customized key number
Switch to the parameter level.
Display shows: Time, 
blinks
Switch to the configuration level. |
|
Display shows: Currently valid system code number, | blink |
Select a function block (e.g. FB20) protected by the key number.
Open the function block.
0 0 0 0 0 appears on the display.
Set 01995 as the key number.
Confirm the key number.
Display shows: 00100
Enter current key number.
Confirm current key number.
Set new key number between 00100 and 01900.
Confirm new key number.
This new key number is now the active key number.
EB 5476 EN 63
