More Info; Troubleshooting - oticon More Series Instructions For Use Manual

Troubleshooting

To troubleshoot the charger, see your charger's Instructions for use.
Symptom
No sound
Intermittent or
reduced sound
Squealing noise
Beeping
Note
If none of the above solutions work, consult your hearing care professional.
60 About Start-up Handling Options Tinnitus Warnings
Possible causes
Hearing aid is out of power
Dead battery
Clogged earpieces (dome, Grip Tip, or mold)
Clogged sound outlet
Moisture
Hearing aid is out of power
Hearing aid earpiece incorrectly inserted
Earwax accumulated in ear canal
If your hearing aid plays eight beeps, four times consecutively,
your hearing aid needs a microphone service check

More info