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474

Display 474 — IPM or PFCM Temperature Sensor Error

Samsung · Gen 6 Fault Code List.pdf Energy Lab

What does 474 mean?

This error indicates a problem with the temperature sensor associated with the IPM (Intelligent Power Module) or PFCM (Power Factor Correction Module).

Common Causes

  • Faulty temperature sensor
  • Wiring issue to the sensor
  • Overheating of IPM/PFCM

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Ensure the unit is adequately ventilated and not overheating.

  2. 2

    Check the wiring connections for the IPM/PFCM temperature sensor.

  3. 3

    Reset the unit by turning off the power for 30 seconds and then turning it back on.

  4. 4

    If the error continues, a technician should inspect the sensor and module.

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 45)Search more codes in this manual