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AI helper

Free error code lookup + AI helper

What does that error code mean?

Plain-English meanings for 259+ codes from 16 brands, checked against manufacturer manuals. Safe first checks, and an AI helper that walks you through them.

  • Checked against manufacturer sources
  • Safety stops on every code
  • Free, no sign-up

Browse by type

AppliancesWashers, dryers, dishwashers, refrigerators, ranges and microwaves.125 codesHeating & coolingFurnaces, heat pumps, air conditioners, mini-splits and thermostats.28 codesWater heatersTank, tankless and heat pump water heaters.41 codesPool & spaPool heaters, pumps, salt systems, automation and hot tub controls.55 codesGas fireplacesGas fireplace and stove ignition systems and remotes.10 codes

AI helper

Talk it through, one safe step at a time

Tell it your brand, model and the code. It explains what the code means, asks what you see, and walks you through simple checks one at a time. If a fix needs gas, refrigerant, combustion or wiring work, it tells you to stop and call a licensed pro.

How it works

Popular codes

See all 16 brands

How it works

  1. 1

    Look up the code

    Type the code and brand. We show what it means, the likely causes and 1–3 safe things to check first.

  2. 2

    Check safely

    Every page says when to stop. Gas, refrigerant, combustion and wiring inside panels are always a job for a licensed pro.

  3. 3

    Get the right part

    If a simple part is the fix, we link it from our shop. The AI helper can help you match it to your model.

Brands we cover

A.O. SmithBalboaBoschGeckoGoogle NestHaywardHeat & GloJandyLGMitsubishi ElectricNavienPentairProflame (SIT)RinnaiSamsungWhirlpool

Questions

Is Error Code Helpline free?

Yes. Looking up codes and chatting with the AI helper are free, with no sign-up. We make money from the parts shop.

Where do the code meanings come from?

Every code is checked against the manufacturer's own manual, installation guide or support page, and we link the source on each page. If we can't verify a code, we leave it out rather than guess.

Is the AI helper a real technician?

No. It's an AI assistant grounded in our verified code database. It walks you through safe, simple checks one step at a time, and it will tell you to stop and call a licensed pro for anything involving gas, refrigerant, combustion or wiring inside a panel.

My code isn't listed. What now?

Ask the AI helper with your brand, model number and the exact code. Codes vary by model, so the owner's manual or the wiring diagram inside the unit is the final word.