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C4

C4 — ODU jumper cap error

GE Appliances · Air Conditioning

What does C4 mean?

The installed jumper cap model does not match the main board. This error is indicated by 'C4' on the ODU main board LED display.

Common Causes

  • Jumper cap is not installed
  • Incorrect jumper cap model used
  • Abnormal detecting circuit

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify that a jumper cap is installed in the correct location ('JUMP' printing on the main board).

  2. 2

    Ensure the correct model of jumper cap is being used.

  3. 3

    If the jumper cap is correct and installed, the detecting circuit may be abnormal. Contact support.

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 37)Search more codes in this manual