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Why is my Navien tankless water heater showing error code E403, and what specific PCB diagnostic checks should I perform?
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The searches the AI actually ran for this prompt.
SEED QUERY
Why is my Navien tankless water heater showing error code E403, and what specific PCB diagnostic checks should I perform?
1 real search · 1 real-search pass
Navien tankless water heater E403 error code PCB diagnostic checks official manualGoogle ↗
OBSERVEDReason
Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.
Query classes
Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.
ChatGPT real searches (1)
Classes come from the query-classifier (a local Laya model).
Searches and sources
ChatGPT1 real searches · gpt-6
Navien tankless water heater E403 error code PCB diagnostic checks official manual Google ↗
- 100374994_2000628591_MANUAL,TANKLESS,GAS,THR.indd · pdf.lowes.com