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Cited troubleshooting for HVAC work.

It will tell you the document and the page, or tell you it does not know. Built for people who service equipment.

One message when it opens. No newsletter.

Rooftop Unit Service Manualp. 137

Citations

Every claim is meant to carry the document and the page.

Not "trained on documentation". Each statement in an answer names the specific document and page it came from, and tapping it shows the passage. The rule we are building to is simple. An answer without a source is withheld rather than shown, so you can verify it against the pages before you act. It replaces scrolling a PDF in the sun. It does not replace your judgement.

What an answer looks like

A claim, then the page it came from.

The claim

Check the low pressure switch for continuity before replacing the board.

The source

Rooftop Unit Service Manualp. 137

Left of the divider, the document. Right of it, the page. Tapping it opens the passage, so you can read the original wording.

The reminder

Advice only. Verify against the pages above before you act.

Hard refusals

It will not walk you through work that can hurt you.

Three areas are hard refusals. It points to standard procedure instead. It is being built to refuse these, not to be argued out of them.

Gas and combustion

Ignition, gas valves, heat exchangers.

Live electrical

Anything worked energized.

Refrigerant handling

Recovery, charging, and the sealed system.

It is not a replacement for your training, certification, or judgement, and it is not a general purpose chatbot. It answers from documentation or says it cannot.

How it works

Three steps, on the unit.

  • Identify the unit

    Manufacturer and model off the data plate. Partial is fine, and a painted over plate is the normal case, so you can type it.

  • Describe the symptom

    Plain words. What the unit is doing, what you have already checked, what the thermostat is calling for.

  • Get ordered steps and readings

    Troubleshooting in order, with the readings to take at each step, and the document and page each claim came from.

Limits

What it does, stated plainly.

Answers
Only what it can point to in a document, with the page.
No source
The answer is withheld rather than shown.
Outside its documentation
It says it does not have documentation covering that, rather than answering.

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One message when it opens. No newsletter. Role and equipment are optional and only used to decide what to build first.