Hoover robot vacuum repair
Hoover robot vacuum repair: main brush motor, cliff sensors, dock contacts and Li-ion battery rebuilds.
Hoover (Candy Group) robot vacuums sold in Latvia are mostly simple machines — H-FREE Robot, the RBC series (RBC006, RBC090) and ROBO COM run on random-bounce navigation with infrared cliff and proximity sensors and a mechanical bumper. Some models are effectively rebadged Cecotec Conga or Eufy hardware in Hoover trim and firmware. This architecture drives the typical fault list: main brush motor wear, cliff sensors clogged with dust (the robot "sees a cliff" on a flat floor), corroded charging contacts and battery capacity loss after 2–3 years of use. We work at component level — diagnose the mainboard with an oscilloscope, verify IR sensor signals and rework SMD components with a hot-air station. Hoover robots use generic 18650 Li-ion packs (typically 1800–2200 mAh), so we rebuild batteries in-house with fresh cells and a BMS protection board. Repair warranty is 3 months; rebuilt batteries carry 6 months. Diagnostics carry no obligation — if you choose not to proceed, the device goes back.
Popular models we repair
- Hoover H-FREE Robot
- Hoover RBC006
- Hoover RBC090
- Hoover ROBO COM
- Hoover ROBO COM 700
Common problems we fix
- Main brush motor jammed — brush will not spin or runs with intermittent grinding noise
- Cliff sensors give a false signal — robot stops on a flat floor or avoids dark carpet patches
- IR proximity sensors clogged — robot fails to notice furniture or vacuums the same spot repeatedly
- Bumper microswitch stuck — robot constantly changes direction or spins in place
- Charging contact corrosion — robot does not recognise the dock or fails to charge
- Battery swelling or capacity loss — runtime drops below 30 minutes
- Wheel motor failure — robot spins in circles or stops due to lost traction on one side
- Dustbin lid reed-switch fault — robot reports the bin is missing even though it is in place
Detailed problem guides
Pick a symptom — we walk through the causes, what you can check yourself, and when to bring it in.
Hoover RBC and H-FREE series navigation and sensor repair
Hoover robot navigation is simple and robust — RBC006, RBC090, H-FREE Robot and ROBO COM move around the room randomly, relying on front-facing infrared proximity sensors, downward-facing cliff sensors and a mechanical bumper. These robots do not build a map or plan a route, so most "navigation" complaints are actually sensor issues, not firmware bugs.
The most common finding is dust-clogged cliff sensors: a film of dust or pet hair on the IR lens makes the robot stop on a flat floor and report a "cliff". Cleaning with isopropyl alcohol and a soft cloth resolves most cases; if the sensor board is damaged or the IR diode has burned out, we replace it. Bumper microswitches stick from dust and hair building up under the bumper plate — we open the housing, clean the switch mechanism and verify the signal on the control board. Clogged proximity sensors show up as a robot that bumps into furniture or constantly changes direction — the fix is the same: clean, calibrate, replace if needed.
Hoover battery and drive system repair
Battery capacity loss is the most common Hoover repair after 2–3 years of use — runtime drops below 30 minutes, the robot returns to the dock with a half-empty bin or stops mid-clean. Hoover uses generic 18650 Li-ion packs (typically 1800–2200 mAh) with a BMS protection board, so we rebuild the packs ourselves with fresh cells. Before assembly we test every cell for capacity and internal resistance, spot-weld with a tab welder and verify BMS protection functions. Rebuilt packs carry a 6-month warranty.
The main brush motor burns out when hair and threads build up around the brush — load increases, the carbon brushes wear out, and the BLDC control transistor can short. We open the drive module, replace the motor or carbon brushes and verify the control board signal. Wheel motor failure — the robot circles in place or stops due to lost traction on one side — usually means worn carbon brushes or a faulty encoder. All mechanical and electronic repairs carry a 3-month warranty.
Pricing & warranty
Fast on-site diagnostics. Repair price quoted after inspection. Repair warranty: 3 months. Battery replacement warranty: 6 months.
If the repair cost changes during the process, the technician will call to agree on the new price. No work is done without your consent.
Frequently asked questions
Why customers choose SATER
- We repair all 96 robot vacuum brands. iRobot, Roborock, Dreame, Ecovacs, Xiaomi, Samsung and dozens more — we know the specifics of each.
- Custom-manufactured batteries. We build battery packs from Sony, Samsung, LG cells — no cheap knock-offs.
- 6-month warranty on battery replacement. Every battery we build comes with a written warranty.
- 30+ years of experience. The service centre has been operating since 1993.
- We serve all of Latvia. Electronics service centre in Riga — we accept devices from anywhere in the country.