25Troubleshooting GuideCAUSE POSSIBLE REMEDYNo sound• Not turned on• Low/dead battery• Poor battery contact• Battery upside down• Hearing instrumentsblocked with ear waxNot loud enough• Low volume• Low battery• Hearing instruments notinserted properly• Change in hearing• Hearing instrumentsblocked with ear waxIntermittent• Low battery• Dirty battery contactTwo long beeps• Low battery• Turn on• Replace battery• Consult your hearing healthcare professional• Insert battery plus (+) side up• Refer to section “Cleaning Your Yuu HearingInstruments”. Consult your hearinghealthcare professional.• Turn up volume; see hearing healthcareprofessional for models without a manualvolume control or if problem persists.• Replace battery• Reinsert carefully. See “Inserting andRemoving ITE and CIC Hearing Instruments”.• Consult your hearing healthcare professional• Refer to section “Cleaning Your Yuu HearingInstruments”. Consult your hearing health-care professional.• Replace battery• Consult your hearing healthcare professional• Replace battery