Real ChatGPT answer · index seedq4PO445cZtwcompleteHome services and improvement · plumbingcommercial

My office building has a Navien tankless water heater showing error code E016 what are the top troubleshooting steps before I call an expensive plumber

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

The searches the AI actually ran for this prompt.

SEED QUERY
My office building has a Navien tankless water heater showing error code E016 what are the top troubleshooting steps before I call an expensive plumber
1 real search · 1 real-search pass
Navien tankless water heater E016 error code overheating troubleshooting 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)
Short factOther / navigationalComparisonConsequenceReason100%DefinitionInstructionYes / no

Classes come from the query-classifier (a local Laya model). 1 of 1 calls are low-confidence (under 50%) — hover a query in the table to see its confidence.

Searches and sources

ChatGPT1 real searches · gpt-6
Navien tankless water heater E016 error code overheating troubleshooting official manual Google ↗
  1. Condensing Water Heater · navien.co.uk
  2. 5.2 Understanding Error Codes · navieninc.com
  3. Operation Manual · media.distributordatasolutions.com

Queries

1 queries · click a column to sort
Query / typeSearchIntentQuery classRouting formatClusterFreq ↓Weight
Navien tankless water heater E016 error code overheating troubleshooting official manual
OBSERVED
Google ↗
AI Mode ↗
—Reason——1x
of 1