Find the right answer in your equipment manuals, while the customer is still on the line.
Answerlore helps equipment dealers and service teams find answers in their own manuals, check the source page, and prepare a customer reply. Questions the documents do not resolve go to an expert for review.
What a technician sees.
Three questions against one sample workspace. The workspace is Caldbeck, a fictional manufacturer with an invented service manual, and it is the same sample data the demo application ships with. The text below is written to the product's answer format, not generated live on this page.
Asked: Customer has an X250 throwing E04 and the flow looks normal
Short answer
Check the ship date first. X250 units shipped before 2026-03-15 carry a known sensor drift fault that shows a false E04. Normal flow with a low-side E04 on one of those units points to the sensor. On later units, E04 usually means a clogged pre-filter.
Steps
- Confirm the model from the serial plate. E04 exists on the X250 only.
- Record the ship date from the serial plate.
- Hold the mode button for 5 seconds to reach the diagnostics screen.
- Note whether the pressure reading is high-side (above 62 PSI) or low-side (below 18 PSI).
- If the reading is low-side and the ship date is before 2026-03-15, stop diagnosing. Follow the known-issue doc.
- If the reading is high-side, ask whether output flow has fallen over recent weeks.
- Have the customer inspect the pre-filter cartridge. A loaded cartridge is discolored across its full depth.
- If the cartridge is loaded, replace it and clear the code. The unit clears E04 after 60 seconds of in-range readings.
- If the code returns within 24 hours of a cartridge replacement, escalate. Do not replace a second cartridge.
Escalate if
- E04 returns within 24 hours of a pre-filter replacement. Product engineering.
- The diagnostics screen shows a reading inside the 18 to 62 PSI range while E04 is displayed. Product engineering.
Sources
knowledge/known-issues/ki-2026-004-pressure-sensor-drift.md · SB-2026-004 Rev B · pp. 1-3
- Manual
- X200/X250 Service Manual, Rev 4, 2025-11 (fictional)
- Pages
- 112-117
- Doc
- knowledge/troubleshooting/x250-pressure-fault-e04.md § Details
- Last verified
- 2026-08-14 by K. Osei, product engineering · 90-day review horizon
E04 fires when the control board reads inlet-side pressure above 62 PSI or below 18 PSI for more than 30 continuous seconds. The display shows the code; it does not show which direction. That distinction is on the diagnostics screen, reached by holding the mode button for 5 seconds.
The X200 does not have this fault and does not show error codes at all. It has a mechanical gauge and no control board.
In the application this opens the knowledge doc itself, with its source manual, page range, revision, and the date a person last verified it.
Short answer
Confirm the model from the serial plate before anything else. Only the X250 shows error codes. The X200 has a mechanical gauge and no control board, so it cannot show E04. If the unit is an X250, check the ship date, then read the diagnostics screen.
Steps
- Ask the customer to read the model from the serial plate.
- If the plate says X200, the unit cannot show a code. Ask what device the customer is reading.
- If the plate says X250, record the ship date from the plate.
- Hold the mode button for 5 seconds to reach the diagnostics screen.
- Note whether the pressure reading is high-side (above 62 PSI) or low-side (below 18 PSI).
- If the reading is low-side and the ship date is before 2026-03-15, stop diagnosing. Follow the known-issue doc.
- If the reading is high-side, inspect the pre-filter cartridge and replace it if it is loaded.
Sources
knowledge/troubleshooting/x250-pressure-fault-e04.md · Rev 4 · pp. 112-117
knowledge/products/x200.md · Datasheet Rev G · pp. 1-4
Not in the knowledge base. The service manual gives 5 NTU as the feedwater turbidity limit. It does not recommend a pretreatment method above that limit, and Answerlore does not infer a specification from a limit. Ask product engineering.
Logged to the gap log · asked 7 times · owner: product engineering · P1Handoff, prefilled
Serial number: Product and ship date: Customer's question, in their words: pretreatment for feedwater above 5 NTU What I have already ruled out, with evidence: manual states the 5 NTU limit only Knowledge docs consulted: troubleshooting/low-flow-rate.md What I need to decide: which pretreatment to recommend
Answers in the application are generated from the workspace's knowledge docs at the time of the question and can differ in wording from this page. What does not change: every claim carries a document, a revision, and a page, and a question the documents do not settle is refused and routed.
Three things it does.
Find relevant manual information.
A technician asks in plain words. Answerlore reads the topic docs built from your manuals and returns a short answer with the steps, in order.
Verify model, revision, and source.
Every claim names the document, the manual revision, and the page range. A technician can open the original and show the customer where it says so.
Capture unanswered questions for expert review.
A question the documents do not settle is refused, logged with a running count and an owning team, and answered once by the person who knows.
One manual becomes twenty-two parts.
Ingestion splits each manual into topic docs: one fault code, one procedure, one policy per part. Every part keeps its source, its page range, and its revision, so nothing on the line ever loses its paper trail.
Every claim gets stamped with its page.
No answer leaves the press without the doc section, the manual revision, and the page number. A technician can open the original and show the customer where it says so.
What the docs can't support comes off the line.
Ask something the knowledge base does not settle and Answerlore does not guess in a confident tone. The part is rejected, filed in the gap log with who owns the answer, and your senior technician writes it down once. Next time it ships.
Gap #7 · pretreatment above 5 NTU · routed to product engineering
Two finished parts, never mixed.
The internal answer carries part numbers, root causes, and escalation paths. The customer draft carries none of that: plain language, reviewed and sent by your technician, never by the machine.
Floor rules, posted where everyone can see them.
It refuses to guess.
A confident wrong answer costs more than no answer. Anything unsupported is rejected, logged, and routed to the team that owns it.
Every claim has a page number.
Doc section, manual revision, page range. If a claim can't cite its source, it doesn't ship.
Your knowledge stays yours.
A private instance per client, plain readable files, no shared systems. You can open the whole knowledge base, audit it, and take it with you.
“In equipment support, a confident wrong answer costs more than no answer.”
We fed Answerlore a real manufacturer's service manual. It answered what the manual settles, with page numbers. Asked something the manual doesn't settle, it declined and filed a gap. It even flagged the manual contradicting itself about its own version number.
Colby Richard, founder, Answerlore. August 2026
See it run on your manuals.
A guided trial starts on the sample workspace above, or on a workspace we prepare from your own manuals. A person sets it up with you; nothing opens by itself.