Look up your error code by brand.

Learn what your error code likely means, what usually causes it, and whether it needs urgent attention.

Choose your brand

Each brand page lists common codes in a single table with likely meaning and typical causes.

How to read code results properly

Error codes narrow the likely fault path, but they do not always confirm the failed part by themselves. Use code output as triage, then validate with observed behavior and model details.

Match your brand first, then verify the exact code format shown on your controller.
Cross-check what the unit is doing physically, not just what the display says.
If code and behavior disagree, follow behavior-first diagnosis before approving work.

Need help with a code right now?

Tell us the brand, code, and what the unit is doing. We'll advise before recommending any work.

Chat with us about the error code

Other diagnostic tools

If no code appears or the unit shows a different symptom, try a different starting point.

Blinking lights

LED blinking in a pattern? Match it to the likely fault.

Aircon problems

Diagnose a specific symptom like no cooling, water leak, or noise.