Real ChatGPT answer · index seednO85v885QrMcompleteHome services and improvement · HVACcommercial

My older Lennox furnace keeps flashing a three blink error code on the control board and the house is getting cold so what does that mean?

ChatGPTgpt-62 queries11/1/2026
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Fan-out diagram

The searches the AI actually ran for this prompt.

SEED QUERY
My older Lennox furnace keeps flashing a three blink error code on the control board and the house is getting cold so what does that mean?
2 real searches · 1 real-search pass
older Lennox furnace control board 3 flash LED code meaning pressure switch model specific manualGoogle ↗
OBSERVEDInstruction
Lennox furnace diagnostic codes 3 flashes pressure switch 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 (2)
Short factOther / navigationalComparisonConsequenceReason50%DefinitionInstruction50%Yes / no

Classes come from the query-classifier (a local Laya model). 2 of 2 calls are low-confidence (under 50%) — hover a query in the table to see its confidence.

Searches and sources

ChatGPT2 real searches · gpt-6
older Lennox furnace control board 3 flash LED code meaning pressure switch model specific manual Google ↗
Lennox furnace diagnostic codes 3 flashes pressure switch official manual Google ↗

Queries

2 queries · click a column to sort
Query / typeSearchIntentQuery classRouting formatClusterFreq ↓Weight
older Lennox furnace control board 3 flash LED code meaning pressure switch model specific manual
OBSERVED
Google ↗
AI Mode ↗
—Instruction——1x
of 1
Lennox furnace diagnostic codes 3 flashes pressure switch official manual
OBSERVED
Google ↗
AI Mode ↗
—Reason——1x
of 1