Charging System reset

Escrito Por: Austin Walter

Comentários: 2

Dificuldade

Very easy

Passos

Tempo necessário

30 seconds

Introdução

Reset a Roomba discovery charging system that is malfunctioning

Ferramentas

Pair of Hands

Passo 2

Depress the tabs on the sides of the battery and lift it out.
You may need to use descent force when lifting up.

Passo 3

Flip Roomba back over
Hold down Roomba's power button for 15 seconds.

Passo 4

Flip Roomba back over.
Reinsert the battery.
Flip Roomba over again.

Charging logic-bomb in the bot?

I had a very seldom used Discovery 4210 and a sometimes used Discovery 4210. They literally both "died" on the same day.

Bought 6 new batteries, all charged for 24 hours. All had symptoms described here. None would reset per the directions here to come back to life. Press the Power button while it is green, it turns red immediately. Reset battery, it turns green. Press the Clean button it starts up, moves about 6 inches, and then gives the death tones, buttons flashe red. Reset battery, green, do again, red again.

I'm thinking when they hit 20 years old some kind of error is in the firmware code (or intentional ?) that disables the the unit. I tested the voltage on the batteries and all, 14 volts and change. Tried charging on the base, same symptoms. Tried charging by plugging into the side of the unit, same symptoms. I even charged the batteries up outside of the Roomba. Same symptoms. Batteries fully charged do not work in either unit.

Not impressed.

William Cerniuk -

In some cases, charging a super discharged battery can cause some charging components to overheat and fail. This requires some logic board level repair and involves replacing two mosfets. I've done it before and it's not the easiest. Didn't take enough pictures to make a guide sadly :/.

Austin Walter -