Heater Not Working but Pilot Is On: Next Diagnostics 91857: Revision history

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30 December 2025

  • curprev 16:3616:36, 30 December 2025Kadoravghb talk contribs 23,218 bytes +23,218 Created page with "<html><p> A pilot flame that stays lit suggests you have gas, at least some airflow, and a control system that is trying. When the house still feels cold, the fault usually sits in the handoff between ignition and actual heat delivery. That handoff has a few common choke points: safety switches, gas flow, burner ignition, blower control, and duct problems. You can learn a lot with a flashlight, a thermostat, and a little patience. You can also avoid chasing ghosts by rea..."