45 ReferenceSymptom Probable cause Corrective action / Workaround PageA loud noise isfrequently generated.(Alarming chime,beeping sound)The remaining battery power is low. Replace the old battery with a new one. If it doesnot work, open the battery cover, wait for 30seconds then close back again. 1821-24The hearing instrument is turned onas soon as a battery is inserted.Turn off the hearing instrument, wait for about30 seconds, and turn it back on again. If it doesnot work, replace the battery with a new one.No sound isproduced.The hearing instrument is poweredoff.Close the battery door completely then turn onthe hearing instrument. 26The remaining battery power is low. Replace the old battery with a new one. 1821-24The battery is installed improperly. Insert the battery correctly.Be sure to use a correct zinc air battery.
