{
  "$schema": "robofaults-fault-record/v0",
  "kind": "error",
  "brand": "roborock",
  "page_en": "https://robofaults.com/roborock/error-42/",
  "page_es": "https://robofaults.com/es/roborock/error-42/",
  "code": "42",
  "slug": "error-42",
  "device_type": "vacuum",
  "name_en": "Maintenance brush jammed",
  "name_es": "Cepillo de mantenimiento atascado",
  "badge": "ERR 42",
  "severity": "warn",
  "severity_note_en": "the dock can't scrub the mop-wash tray until the brush is freed",
  "severity_note_es": "la base no puede frotar la bandeja de lavado de la mopa hasta liberar el cepillo",
  "series": [
    "S7",
    "S8"
  ],
  "tools_en": "none",
  "tools_es": "ninguna",
  "time_min": 10,
  "difficulty": "easy",
  "safety": "none",
  "safety_note_en": "",
  "safety_note_es": "",
  "meaning_en": "Error 42 — spoken as \"Error 42. Maintenance brush jammed. Clean it and remove blockages.\" — hits Ultra docks. The <b>brush that scrubs the mop-washing tray is stuck</b>; where it stops points to the cause.",
  "meaning_es": "El error 42 —anunciado por voz como «Error 42. Maintenance brush jammed»— afecta a las bases Ultra. El <b>cepillo de mantenimiento que frota la bandeja de lavado de la mopa está atascado</b>; dónde se detiene indica la causa.",
  "causes": [
    {
      "title_en": "Debris jamming the brush (stops at the left)",
      "title_es": "Suciedad atascando el cepillo (se detiene a la izquierda)",
      "detail_en": "Roborock's rule of thumb — a brush stopped at the left side is physically jammed. Pull out whatever is caught in it.",
      "detail_es": "La regla oficial de Roborock — un cepillo detenido en el lado izquierdo está atascado físicamente. Saca lo que tenga atrapado.",
      "likelihood": "most_common"
    },
    {
      "title_en": "Dock filter blocked or missing (stops at the right)",
      "title_es": "Filtro de la base obstruido o mal puesto (se detiene a la derecha)",
      "detail_en": "Stopped at the right side, the tray's filter is clogged or not seated. Clean it and refit it properly.",
      "detail_es": "Detenido en el lado derecho, el filtro de la bandeja está obstruido o mal asentado. Límpialo y colócalo bien.",
      "likelihood": "common"
    }
  ],
  "steps": [
    {
      "title_en": "Note where the brush stopped",
      "title_es": "Fíjate en dónde se detuvo el cepillo",
      "detail_en": "Left side means a jam, right side means a filter problem — this single observation picks your fix.",
      "detail_es": "Lado izquierdo significa atasco, lado derecho significa problema de filtro — esa sola observación decide la solución."
    },
    {
      "title_en": "Clear the maintenance brush",
      "title_es": "Despeja el cepillo de mantenimiento",
      "detail_en": "Lift the brush out of the dock's wash tray and remove tangled hair and debris.",
      "detail_es": "Saca el cepillo de la bandeja de lavado de la base y retira el pelo y la suciedad enredados."
    },
    {
      "title_en": "Clean and reseat the tray filter",
      "title_es": "Limpia y recoloca el filtro de la bandeja",
      "detail_en": "Rinse the filter, then click it back into position.",
      "detail_es": "Enjuaga el filtro y encájalo de nuevo en su posición."
    },
    {
      "title_en": "Run a mop-wash cycle",
      "title_es": "Lanza un ciclo de lavado de mopa",
      "detail_en": "Trigger a wash from the dock and confirm the brush sweeps the full tray. If it stalls again, contact support.",
      "detail_es": "Activa un lavado desde la base y confirma que el cepillo recorre toda la bandeja. Si se vuelve a frenar, contacta con soporte."
    }
  ],
  "parts": [],
  "firmware_series": "s7",
  "related": [
    "27",
    "5"
  ],
  "related_symptom": "mop-not-working",
  "sources": [
    {
      "label_en": "Roborock Support — Error 42: Maintenance brush jammed",
      "label_es": "Soporte de Roborock — Error 42: cepillo de mantenimiento atascado",
      "url": "https://support.roborock.com/hc/en-us/articles/6569168939033-What-should-I-do-if-the-robot-alerts-Error-42-Maintenance-brush-jammed",
      "kind": "official"
    },
    {
      "label_en": "Roborock S8 Pro Ultra user manual — Common Issues",
      "label_es": "Manual de usuario del Roborock S8 Pro Ultra — problemas comunes",
      "url": "https://support.roborock.com/hc/en-us/articles/17819469369241-Roborock-S8-Pro-Ultra-FCC-User-Manual-EN-FR-ES-Latin-Br-Pt",
      "kind": "official"
    }
  ],
  "confidence": "official",
  "last_verified": "2026-07-05"
}