What does your heat pump's error code mean?
Fault and warning codes for Nordic air-to-air and exhaust-air heat pumps, resolved from the manufacturer's own manual — in plain language, with an honest line on what is safe to do yourself.
- 1457 error codes
- 72 model families
- 12 brands
Make your heat pump run better
Not every question is a fault. The app also recommends owner-menu settings for the pump you already have.
- Pick a goal — a lower bill, more even heat, less noise, or getting ready for winter.
- Get a short checklist of settings from your own model’s manual, with the printed menu labels and the factory values.
- Installer menus, refrigerant and electrical work are refused and routed to a certified technician — the same rule as everywhere else in the app.
Browse by brand
Pick your brand, then your model family.
- Bosch Climate 6100i-8100i, Climate 9100i View codes
- ComfortZone EX, RX-RXL, RX95, RXC View codes
- Daikin Caldo, Caldo II, Emura, FTX-K +9 View codes
- Fujitsu Design Nordic LTCN, KHCBN, KMCB, KMCEN +7 View codes
- Gree Lomo View codes
- IVT 490/495 TWIN, Aero 500-1, Aero 600-1, Aero 600/800 +9 View codes
- LG Nordic Artcool View codes
- Mitsubishi Electric AP, EF, FD, FH +5 View codes
- NIBE F370, F372, F470, F730 +2 View codes
- Panasonic CZ, HZ, HZ-RZ-TZ, LZ +4 View codes
- Samsung Wind-Free Nordic View codes
- Toshiba Daiseikai 8, Daiseikai 9, Shorai View codes
How it works
From a blinking display to a decision, in four steps.
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Look up the code
Type what your display shows. We resolve it from the parsed manufacturer manual for your exact model family — not from a guess.
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Understand what it means
Plain-language explanation of the fault, its severity, and which models in the family it applies to.
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Know when to call someone
Refrigerant, mains-electrical and gas faults are flagged as technician work. We never hand you a DIY procedure for regulated work.
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Get step-by-step help
In the app, describe the symptom or send a photo of the unit and get guided, model-aware troubleshooting.
Use HeatPump AI inside your AI assistant
Claude Code, Meta Muse and any MCP client can look up error codes and search manuals for free, and run a paid diagnosis with your API key.
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Sign in
Google or a one-time email link. No password.
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Create your key
Accept the disclosure and create a key on your account page. It is shown once.
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Connect
Paste the endpoint and key into your client. Free tools need no key.
Diagnosis over MCP spends the same credits as the app.
Get step-by-step help in the app
This site tells you what a code means. The HeatPump AI app helps you act on it.
- Answers grounded in your model’s own manual, with the settings and menus your control panel actually prints.
- Send a photo of the unit or the display and get a read on what it is showing.
- Norwegian, Swedish, Finnish and English — and a drafted email to a nearby servicer when it is time to hand over.
iPhone · Credits, no subscription