Commercial refrigeration controller alarm codes by brand and controller model

What the alarm or fault code shown on a walk-in cooler/freezer digital temperature controller means, taken from each manufacturer's own manual. A restaurant or grocery refrigeration tech reads a short code off a Danfoss, Carel or Dixell display and has to know which board it is before the code means anything -- 'E03' is a digital-input alarm on a Carel ir33 Universale and something else entirely on a different maker's board. A code belongs to a controller MODEL rather than to a brand, and a manufacturer's other boards need not use the same list, so every record names the exact controller whose manual it came from and speaks only for that one. Today that is three boards, one per brand: the Danfoss EKC 202, the Carel ir33 Universale and the Dixell/Copeland XR60CHC. Each record is one alarm/fault code: the code exactly as the display shows it, what it signals, and (where the manual states it) its effect on the outputs or its cause. A web search for 'walk-in cooler controller error codes' turns up only single-brand troubleshooting pages -- no cross-brand comparison exists, because each manufacturer publishes only its own controller's manual.

The data

Where this came from

Every record above links the page it was taken from and quotes the sentence that states it. These are the 3 sources this dataset was assembled from.

• assets.danfoss.comhttps://assets.danfoss.com/documents/latest/54543/BC162786425567en-000901.pdf
• docs.rs-online.comhttps://docs.rs-online.com/f254/0900766b8111f52c.pdf
• webapps.copeland.comhttps://webapps.copeland.com/Dixell/Content/Pages/Manuals/XR-CHC/XR60CHC/XR60CHC-EN.pdf

Machine-readable

• data.jsonThe whole dataset — every record with its source URL and source quote.
• Open Knowledge Format bundleOne JSON object per line — every record's frontmatter and quoted span exactly as it is held here, in one fetch.
• data.csvThe same records as one flat table, for a spreadsheet or a dataframe. The last four columns are the source URL, the quoted sentence it was read from, the date we last checked it, and which columns are our reading rather than the page's words.
• How this is made and checkedWhat "verified against source" does and does not mean.

From your own code

Same records, same quotes, without scraping the page: refsource is on PyPI and npm. Each value comes back carrying the URL it was read from and the sentence on that page that states it — .source and .quote sit on the value itself rather than in a side channel, so the checking step is available instead of skipped.

pip install refsource
refsource lookup commercial-refrigeration-controller-alarm-codes-by-brand brand=Danfoss

npx -y refsource lookup commercial-refrigeration-controller-alarm-codes-by-brand brand=Danfoss

Set your AI assistant up to use this

Two files and no account. Put this in .mcp.json at the root of your project — Claude Code, Cursor, Windsurf, VS Code and Codex all read that file — and your assistant can look this dataset up instead of recalling it. The server is remote, keyless and read-only.

{
  "mcpServers": {
    "referencesource": {
      "type": "http",
      "url": "https://referencesource.org/mcp"
    }
  }
}

Add to Cursor · or, on the command line: claude mcp add --transport http referencesource https://referencesource.org/mcp --scope project

Then one line in the project's CLAUDE.md or AGENTS.md, so the assistant knows when to reach for it:

When a question needs "Commercial refrigeration controller alarm codes by brand and controller model", call the referencesource MCP server at https://referencesource.org/mcp (tool `search_records`, dataset_slug `commercial-refrigeration-controller-alarm-codes-by-brand`) instead of answering from memory — every record it returns carries its source URL and a verbatim quote from that page.

What each tool does, and the servers built over single registers: Connect your AI assistant.

58 records. last verified against source 2026-08-27. due for re-check by 2028-08-26.

Licence. factual compilation from manufacturer technical manuals