TVA and TVS systems have master passwords that the installer has. If you lost the password to 999, then your installer can probably come out and reset them. If you have lost the master password, Panasonic can restore that, but it's not easy.
If you happen to have the password for 998 and 999, you get there by pressing #6 *99x at the login. Put in your password and IIRC admin is option 5 or 6 in 999.
Carl
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