Roborock S7 MaxV: problems, parts and running costs

Checked: 2026-10-19

Summary

A premium robot vacuum and mop with 5100 Pa suction, sonic mopping and camera-based obstacle avoidance, with no subscription required for basic operation. The recurring problems are hair tangling in the main brush, LiDAR turret errors, pet-hair pickup on carpet, and dock maintenance on the Ultra.

Common problems and fixes

Main brush tangles (Error 5) — the brush tangles with hair, rug tassels and even disposable masks, and Error 5 means the main brush is obstructed. Fix: clean the brush. [4][15]
LiDAR turret errors (Error 1) — Error 1 means the laser unit is blocked or not spinning; Reddit owners report hair working into the LiDAR turret motor. Fix: clean the turret. [16][17]
Poor pet-hair pickup — RTINGS reports the S7 MaxV does a poor job with pet hair on most floors, and a Reddit owner called carpet hair performance disappointing. [1][10]
Obstacle avoidance weak on carpet and in dim light — RTINGS found the avoidance system works poorly on carpet; the ReactiveAI 2.0 camera needs good lighting. [1][3]
Dock odors and jams (Ultra) — the dirty water tank and mop washing area need regular cleaning or they start to smell, and dock “maintenance brush jam” errors are reported on MaxV Ultra docks. [4][5][18]
Stuck on furniture bases or thresholds — some units get stuck on certain furniture bases or thresholds; no fix reported. [5]
Setup connectivity issues — some owners report app connectivity problems during setup. [5]
No hot-air mop drying — the pad dries on the dock, and the dock footprint is large. [4][5]

The warranty is one year limited for new units bought in the US and six months for certified refurbished; it excludes consumables. [14]

Parts and consumables

HEPA filter (E11 class) — part of the regular cleaning schedule; replacement interval not reported. [3]
Main brush and side brush — replacement brushes are available; interval not reported. [3][5]
Dirty water tank (Ultra dock) — empty and clean regularly to prevent odors. [5]

Yearly running cost

Not enough data. No subscription is required for basic operation. [3][5]

When it is a good buy

Launch MSRP in 2022 was $859.99 for the robot alone and $1,399.99 for the S7 MaxV Ultra with the Empty Wash Fill Dock; with no verified current street price, those launch figures are the reference and used or refurbished units below them are where the value sits. It makes most sense for buyers who prioritize mopping performance and obstacle avoidance. Alternatives named in the record: the Roomba Combo J7 Plus, which CNET preferred for cleaning power and mop pad design; the Ecovacs X1 Omni when hot-air mop drying matters; newer Roborocks (S8 series, Qrevo) sit above it. [4][5][11]