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SHARK·FAULT ERR 27 WARN

Shark Error 27 — Inclination error

Severity: Warning — robot refuses to work on what it reads as a sloped surface PowerDetect
Last verified: 2026-07-06 Tools: clean dry cloth Time: ~10 min Difficulty: easy

DIRECT ANSWER

Error 27 means the robot detects an un-level surface. Put the dock on level floor, start missions from level ground, and wipe the cliff sensors — they feed the tilt reading.
#meaning · #causes · #fix · #models — link straight to any section

COMMON CAUSES · RANKED

1

Dock on a slope or uneven floor MOST COMMON

Shark's quick fix starts with the dock — a base on a ramp or thick rug tilts every mission start.

2

Mission started on an incline

Starting the robot on a threshold or ramp makes its first sensor reading a slope.

3

Dirty cliff sensors skewing the reading

The official procedure has you wipe the cliff sensors — dust makes level floor read as tilted.

HOW TO FIX IT

No battery or electrical work involved in this fix.

Relevel the dock

Move the charging base onto firm, level floor and keep ramps and rug edges out of the approach.

Wipe the cliff sensors

Power off, turn the robot over, and wipe the cliff sensors under the bumper with a clean, dry cloth.

Restart from level ground

Start the next mission from the dock on level floor, and add no-go zones over ramps or thresholds that keep triggering the error.

MODELS AFFECTED

Model Status Firmware Parts Verified
Shark PowerDetect NeverTouch RV2820ZE active — — 2026-07-06 · Source
Shark PowerDetect ThermaCharged RV2910XE active — — 2026-07-06 · Source

Models resolved from the series chips above. Support status comes from our EOL library; rows link to the matching parts and firmware pages.

Sources

Verification

OFFICIAL SOURCE

Last verified: 2026-07-06 · How we verify a fault code

Corrections

Spotted an error? Report a correction — fixes ship within 48h and are logged on this page.