Friedrich Kuhl Series 6000 BTU Window Air Conditioner Installation and Operation Manual - Manuel (Page 18)

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MENU
Control Panel Operation
The Lock Menu continued
Set the second digit of the password using the same method.
See Figure 36.
Set the third digit of the password using the same method.
See Figure 37.
Figure 36
MENU
Figure 37
MENU
Figure 38
MENU
Figure 39
Set the fourth digit of the password using the same method.
See Figure 38.
Press the leftmost button to complete the password process.
See Figure 39.