GE 27730 - Manual (Page 40)

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ROUBLESHOOTING
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ALLER
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Problem Solution
No Display • Is battery fully charged? Try replacing the battery.
• Make sure that the unit is connected to a non-switched
electrical outlet. Disconnect the unit from the plug and
plug it in again.
• Did you order Caller ID service from your local
telephone company? The display won't work
unless you order Caller ID service from your phone
company.
Data error • The unit displays this message if it detects anything
other than valid Caller ID information during the
silent period after the first ring. This message
indicates either the presence of noises on the line,
or that an invalid message has been sent from the
telephone company.