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221

Display 221 — Outdoor Unit Temperature Sensor Error

Samsung · Gen 6 Fault Code List.pdf Energy Lab

What does 221 mean?

This error points to a problem with the temperature sensor located in the outdoor unit.

Common Causes

  • Faulty outdoor temperature sensor
  • Sensor wiring issue

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Inspect the wiring connected to the outdoor unit's temperature sensor for any loose connections or damage.

  2. 2

    Ensure the sensor is not obstructed or covered, allowing for accurate readings.

  3. 3

    If the sensor or its wiring is damaged, it will need to be repaired or replaced.

  4. 4

    Contact a service technician for inspection and repair.

Browse all codes in this manual (52)
Verified technical data. Last updated: April 2026

Related Faults

101Display 101 — Wire connection error120Display 120 — Zone 2 room temperature sensor error121Display 121 — Zone 1 room temperature sensor error
Source: Samsung Gen 6 Fault Code List.pdf Energy Lab
Open Manual (Page 44)Search more codes in this manual