Wrong move
Direct answer
The risky shortcut is jumping the pressure switch and leaving the furnace running. An open pressure switch can point to inducer failure, blocked venting, condensate blockage, cracked tubing, bad switch, or unsafe combustion-air/venting conditions.
How to use this answer
Read the answer once, then prove it by choosing an answer in a practice question before looking at the explanation. If the miss repeats, tag the domain as Gas furnace diagnostics and drill a smaller set before returning to mixed practice.
Prep path
Guide
EPA 608 Study Guide
Independent EPA 608 study guide with Core, Type I, Type II, Type III, and Universal practice focus areas.
SamplesEPA 608 Sample Questions
Public EPA 608 Practice Test sample questions with explanations.
PracticeOpen EPA 608 Practice Test
Start with the 15-question free set before deciding whether to unlock the paid bank.