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H4

H4 - Overload

GE Appliances · Air Conditioning

What does H4 mean?

This indicates an overload condition. The system may have detected a current draw that is too high for its components, leading to a shutdown for protection. This status is shown on the ODU main board LED.

Common Causes

  • Excessive system load
  • Faulty compressor
  • Drive board issues

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check for any obstructions that might be causing the system to work harder.

  2. 2

    Ensure the system is not running under extremely high load conditions.

  3. 3

    Inspect compressor wiring for any loose connections.

  4. 4

    Replace the drive board if it is suspected to be faulty.

  5. 5

    Replace the compressor if it is determined to be damaged.

Browse all codes in this manual (62)
Verified technical data. Last updated: April 2026

Related Faults

1Error 1 — Outdoor PCB EEPROM fault10Error 10 — Defrost sensor fault11Error 11 — Compressor suction temperature sensor fault
Source: GE Appliances Air Conditioning
Open Manual (Page 23)Search more codes in this manual