HVAC Code Lookup

Daikin Mini-Split Code E6

Hard lockout

Compressor lock. The position-detection circuit shows the compressor is not turning when it should be - on 09/12 class units the compressor stops on overcurrent instead.

Manual wording: “E6 Compressor lock”

Documented for: FTXS-L, FDXS-L, H-Series, FTXM-W/V outdoor units

Likely causes, most common first

  1. Compressor locked
  2. Compressor harness disconnected

What you can safely check yourself

  • Turn the system off at the breaker or disconnect switch, leave it off at least 30 seconds, and turn it back on once

When to call a technician

E6 means the compressor is mechanically or electrically locked. Diagnosis takes an inverter checker on the U/V/W harness and usually ends in a compressor or board replacement.

A Daikin mini-split throwing this code repeatedly has a reason — clearing the code without fixing the cause just hides it.

Sources

Other Daikin codes