About the operation
An independent index built from manuals, not borrowed authority
Heat Pump Fault Finder AU is independently operated for people dealing with heat-pump hot-water systems in Australia. It is not a manufacturer, service centre, trade association or government service. Brand names identify equipment; they do not imply an affiliation.
How the site is made
From a manufacturer PDF to a public fault-code page
The process mixes narrow automation with explicit human decisions. Automation extracts, compares and checks literal anchors. The site operator chooses source scope, reviews a random quality sample, handles corrections and decides whether model-mapping evidence is strong enough to publish.
Find the official document
Public manufacturer manuals and support pages supply fault meanings. Australian model identity begins with the Clean Energy Regulator register, then needs separate evidence before a code set is mapped.
Capture the exact evidence
Each source is saved with a retrieval date, file fingerprint, extracted text and page anchor. The public wording is paraphrased; the document remains the authority.
Make automation prove its work
Two independent extraction passes must agree. The code and meaning anchor must also occur on the claimed page. A disagreement is quarantined, not polished into an answer.
Publish a trail, then recheck it
Code pages link to their source and show a last-verified date. Dated coverage records expose gaps, while corrections and source changes appear in the changelog.
A deliberately narrow machine role
Automation checks rows; it does not fill evidence gaps
Automated extraction runs twice against the same captured document. Both outputs must agree, and literal text on the cited page must support the row. Failed checks remove the row from public routes.
Automation cannot decide that two units probably share a controller from a similar model number or drawing. That mapping requires reviewed, official evidence.
No made-up humans or endorsements
The site does not manufacture a team
No fictional person is used to make this project look staffed, qualified or endorsed. There are no invented names, credentials, customer quotes or expert profiles. When this page says “the site operator”, it describes the real operation of this independent project—not a character written for the page.
Inspect the record
The workings are public
The methodology sets out source capture, dual-pass extraction, severity rules and sampled review. Thechangelog records manual additions and corrections. For missing manuals and unmapped models, the coverage audit publishes the gap instead of hiding it.
Limits that stay visible
A manual meaning is not a remote diagnosis
Public manuals do not cover every firmware version, dealer-only diagnostic or future code. Even an exact match reports what the controller documents; it does not prove which physical component failed. Covers stay closed, licensed work stays licensed, and unknown evidence remains unknown.