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Daikin Air Conditioner A6 Error Code

Indoor fan motor fault. What it means, which models show it, and how to clear it, easiest fix first.

DaikinAll Daikin air conditioner codes

A6
May need a pro

The indoor fan isn't turning at the speed the control board expects, or has stopped. Causes include a failed or locked fan motor, a damaged or unplugged motor harness, or a fault on the indoor board.

Compatible models

Daikin doesn't publish a model list for this code; it appears on Daikin air conditioners with a digital display. Check your owner's manual.

Also shown as

Daikin uses this code across its residential split, SkyAir and VRV ranges, but the exact meaning and causes can vary by series, model year and region, so confirm it in your unit's manual. How to read it: most Daikin ductless wall units only blink the operation lamp. On remotes such as the ARC433 series, press and hold the timer Cancel button for roughly 5 seconds until 00 blinks on the screen, then press Cancel again one step at a time; when the indoor unit answers with a long continuous beep, the code showing is the stored fault. SkyAir and VRV wireless remotes use a different sequence with the Inspection/Test, up/down and MODE buttons, and wired wall controllers usually show the code on their screen.

Difficulty

Try the basic checks, but the usual fix is a technician's job.

Safety first: unplug the air conditioner (or switch off its breaker) before touching filters, hoses or panels. If you smell burning or gas, or see water near the outlet, stop and call a professional.

How to fix Daikin A6

  1. Check the air filters

    Turn the system off and switch off its breaker. Lift the front panel, take out the filters and make sure they are clean and were seated properly, since a filter that has slipped out of place can foul the fan. Refit them and close the panel. Don't reach into the air outlet or try to turn the fan by hand.

  2. Reset the power at the breaker

    Switch the system off with the remote, then turn off its circuit breaker in your home's main panel. Wait about 5 minutes, switch the breaker back on and restart the unit. If the code returns within a few minutes, write it down for the technician.

When to call a technician

If the fan stays still or A6 returns, the fan motor or its circuit needs diagnosis by an HVAC technician.

Parts linked to A6

These are the parts most often behind this code. Tap one to see what it does and the signs it is failing.

Order parts by your full model number so they fit.

Frequently asked questions

What does A6 mean on a Daikin air conditioner?

The indoor fan isn't turning at the speed the control board expects, or has stopped. Causes include a failed or locked fan motor, a damaged or unplugged motor harness, or a fault on the indoor board.

Which Daikin models show the A6 code?

Daikin doesn't publish a model list for this code; it appears on Daikin air conditioners with a digital display. Check your owner's manual.

Can I fix Daikin A6 myself?

Only the basic checks. You can safely try the steps above, but A6 usually points to a part or fault that needs a technician.

What if A6 keeps coming back?

A code that returns after a reset and the checks above usually means a part is wearing out. Note when A6 appears (which cycle, how often) and have your model number ready; it helps a technician bring the right part on the first visit.

Other Daikin air conditioner codes

Last reviewed 2026-10-19. Codes and steps can vary by model; check your owner's manual.

Sources we checked