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E6-00

E6-00 — OU: Compressor startup defect

Daikin · ASHP Error Codes

What does E6-00 mean?

The outdoor unit's (OU) compressor is failing to start correctly.

Common Causes

  • Electrical issue with the compressor
  • Faulty starting capacitor
  • Control board problem

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the power supply to the outdoor unit.

  2. 2

    Listen for any clicking or humming sounds when the unit attempts to start.

  3. 3

    Perform a power reset.

  4. 4

    A certified technician is needed to diagnose compressor issues.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

7H-017H-01 — Water flow problem7H-047H-04 — Water flow problem during domestic hot water production7H-057H-05 — Water flow problem during heating/sampling
Source: Daikin ASHP Error Codes
Open Manual (Page 3)Search more codes in this manual