iRobot · Robot Vacuum Serious

Charging Error 5 — Charging system fault

Internal charging circuit detected an abnormal condition (over-temp, over-current, or charge IC fault).

Keep using it?
Limited use only
DIY difficulty
Moderate
Verified against
homesupport.irobot.com ↗

How to fix it

  1. Move robot and dock to a room-temperature location (60-80°F / 15-27°C).
  2. Let robot sit unplugged for 30 minutes to normalize temperature.
  3. Clean all charge contacts.
  4. Place on dock and wait 6+ hours.
  5. If error returns, replace the battery first (cheaper fix).
  6. If error persists with a new battery, the charging circuit on the main board has failed — replace robot or contact iRobot support.

Why it happens

Typical signs: 'Charging error 5' voice prompt · Robot may feel warm · Charging stops prematurely

  • Battery too hot or too cold Charge IC pauses when battery temperature is outside safe range.
  • Failing battery Internal cell imbalance triggering safety circuit.
  • Failed charge controller on main board Power management IC on the logic board failed.

Parts you may need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

  • Roomba OEM battery Common replacement
    Amazon →

More iRobot robot vacuum codes

Charging Error 2 Charging Error 2 — Battery not detected Charging Error 3 Charging Error 3 — Battery won't charge Error 1 Error 1 — Side wheel stuck / off ground Error 10 Error 10 — Drive wheel not turning Error 11 Error 11 — Bin full or airflow blocked Error 14 Error 14 — Bin not detected / not installed correctly

All iRobot codes → All robot vacuum codes →

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: homesupport.irobot.com.