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What diagnostic tests should I run when my natural gas tankless water heater throws an Error Code 11 during morning peak usage?

ChatGPTgpt-61 query11/1/2026
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Fan-out diagram

The searches the AI actually ran for this prompt.

SEED QUERY
What diagnostic tests should I run when my natural gas tankless water heater throws an Error Code 11 during morning peak usage?
1 real search · 1 real-search pass
natural gas tankless water heater error code 11 ignition failure manufacturer troubleshooting Rinnai Navien officialGoogle ↗
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)
Short factOther / navigationalComparisonConsequenceReason100%DefinitionInstructionYes / no

Classes come from the query-classifier (a local Laya model).

Searches and sources

ChatGPT1 real searches · gpt-6
natural gas tankless water heater error code 11 ignition failure manufacturer troubleshooting Rinnai Navien official Google ↗

Queries

1 queries · click a column to sort
Query / typeSearchIntentQuery classRouting formatClusterFreq ↓Weight
natural gas tankless water heater error code 11 ignition failure manufacturer troubleshooting Rinnai Navien official
OBSERVED
Google ↗
AI Mode ↗
—Reason——1x
of 1