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E488

E488 — Inverter input voltage sensor error

Samsung · Air Conditioning

What does E488 mean?

The sensor that measures the input voltage to the inverter has detected an error.

Common Causes

  • Faulty inverter input voltage sensor
  • Wiring issue to the sensor
  • Problem with the Outdoor Inverter PBA

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Power off the unit at the circuit breaker for 30 seconds, then power it back on.

  2. 2

    Consult a qualified technician to inspect the sensor connections.

  3. 3

    The Outdoor Inverter PBA may need to be checked for functionality.

Browse all codes in this manual (94)
Verified technical data. Last updated: April 2026

Related Faults

COND temperature sensor errorCondenser temperature sensor error — Outdoor coil temperature sensor faultCommunication errorCommunication error — Indoor/outdoor inverter main MICOM communication lostCommunication error after trackingCommunication error after finishing tracking — System communication issue following a tracking process
Source: Samsung Air Conditioning
Open Manual (Page 129)Search more codes in this manual