Medium - Inspection Needed

Miele Range Hood LED-PERF Error Code (Poor Extraction)

LED-PERF means the hood's own performance monitoring has detected that it isn't clearing cooking smoke and odors at the rate expected for its fan setting.

What LED-PERF Means

LED-PERF means the hood's own performance monitoring has detected that it isn't clearing cooking smoke and odors at the rate expected for its fan setting.

Common Causes of LED-PERF

  • Saturated grease or charcoal filter restricting airflow
  • Ducting that's partially blocked, kinked, or too long for the installation
  • A fan motor losing power output without failing outright

🔧 One Safe Check You Can Try

Check and clean both the grease filter and (if present) the charcoal filter first — a saturated filter is the single most common cause of weak extraction.

⚠ Why You Shouldn't Go Further Than That

  • Ducting problems are often inside the wall or ceiling cavity and aren't something you can inspect or fix without opening finished surfaces.
  • A fan motor that's degrading rather than fully failed needs an airflow measurement to confirm — not something most homeowners have the equipment for.
  • Persistent poor extraction after filters are clean is a common reason people incorrectly assume the whole unit needs replacing, when it's often a ducting or motor issue that's repairable.

Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.

Other Range Hood Repair Error Codes

Still Seeing LED-PERF?

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