Wi-Fi Not Connecting / Offline in App
iRobot Robot Vacuum
Severity: ModerateWhat Does This Error Mean?
Roomba Wi-Fi issues are most often caused by the robot only supporting 2.4 GHz while the router is broadcasting 5 GHz only, or the Wi-Fi password having changed. All Roomba models use 2.4 GHz only — confirming the router has 2.4 GHz enabled is the most important check.
Affected Models
- Roomba i series
- Roomba j series
- Roomba s series
- Roomba e series
- Roomba 900 series
Common Causes
- Router broadcasting only 5 GHz — Roomba supports only 2.4 GHz
- Wi-Fi password changed — Roomba still using old credentials
- Router needs restart
- Roomba placed far from the router during setup — weak signal during pairing
- iRobot Home app not up to date
- Router using WPA3 only — Roomba requires WPA2
How to Fix It
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Confirm the router has 2.4 GHz enabled.
This is the single most important check. All current Roomba models use 2.4 GHz Wi-Fi only — they cannot connect to 5 GHz. Log into your router admin page and confirm the 2.4 GHz band is broadcasting. If your router shows a combined SSID (same name for both 2.4 and 5 GHz), the Roomba should automatically connect to 2.4 GHz — but if it still fails, temporarily split the bands and connect the Roomba to the explicit 2.4 GHz network.
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Reconnect the Roomba in the iRobot app.
In the iRobot Home app, tap the Roomba → Settings → Wi-Fi Settings → Change Wi-Fi Network. Follow the on-screen instructions to connect to your network with the correct (current) password. Place the Roomba close to the router during this process — within 1–2 metres for a reliable setup signal.
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Restart the Roomba and the router.
Press and hold the Clean button on the Roomba for 10 seconds until a tone plays. Unplug the router for 30 seconds and plug back in. Wait 60 seconds for the router to fully reconnect. The Roomba will attempt to reconnect automatically.
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Check router security type.
Roomba supports WPA2 security — it may not connect to routers using WPA3 only. Log into your router admin page and check the Wi-Fi security setting. Change to WPA2/WPA3 mixed mode if currently set to WPA3 only.
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Perform a factory reset on the Roomba.
If no other steps work, reset the Roomba: hold the Clean button for 10 seconds until the light ring spins. This clears all saved Wi-Fi credentials and maps. You will need to re-pair in the iRobot app and the Roomba will need to remap your home. A reset resolves persistent Wi-Fi connection failures due to corrupted network settings.
Frequently Asked Questions
Why does my Roomba show as offline in the iRobot app?
Roomba showing as offline in the app means it has lost its Wi-Fi connection. The most common reasons are: the router was restarted and the Roomba did not automatically reconnect, or the router changed its 2.4 GHz settings. Place the Roomba on its dock (so it has power), then use the iRobot app to reconnect it to Wi-Fi. If the Roomba is offline but physically working fine (starts cleaning when you press the button), it is a Wi-Fi issue only — not a robot fault.