Useful Information26 Helpline Tel. No.: U.K. 0844 844 3899 Ireland 01289 8333Error messagesTroubleshootingIf you still have difficulties after following the instructions in this section, disconnect the base unit’sAC adaptor and turn off the handset, then reconnect the base unit’s AC adaptor and turn on thehandset.General useDisplay message Cause/solutionMemory Full L The phonebook memory is full. Erase unwanted entries (page 16).Problem Cause/solutionThe handset does not turn on evenafter installing charged batteries.L Place the handset on the base unit or charger to turnon the handset.The unit does not work. L Make sure the batteries are installed correctly (page10).L Fully charge the batteries (page 10).L Check the connections (page 10).L Unplug the base unit’s AC adaptor to reset the unitand turn off the handset. Reconnect the adaptor, turnon the handset and try again.L Remove the batteries from the handset and installagain.L The handset has not been registered to the baseunit. Register the handset (page 29).The handset display is blank. L The handset is not turned on. Turn the power on(page 13).I cannot hear a dial tone. L Make sure that you are using the supplied telephoneline cord. Your old telephone line cord may have adifferent wiring configuration.L The base unit’s AC adaptor or telephone line cord isnot connected. Check the connections.L Disconnect the base unit from the telephone line andconnect the line to a known working telephone. If theworking telephone operates properly, contact ourservice personnel to have the unit repaired. If theworking telephone does not operate properly,contact your service provider/telephone company.I cannot use the intercom feature. L This feature is available between the handsets.Although the handset displays “Intercom”, thisfeature is not available for single handset models.TGB21xE(en).book Page 26 Wednesday, April 9, 2014 11:53 AM