What does a color change in the sight glass signify

ensuring the inducer motor maintains proper airflow for safe operation

and GHR26 furnace series where reliable flame carryover and consistent burner port alignment are required for safe operation

this replacement part ensures uniform compression and alignment of the actuator spring

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Trane SWT2293 Pressure Switch What does a color changeAs an experienced technician, you know that a furnace is only as reliable as its safety chain. The Trane SWT2293 Pressure Switch is a critical OEM replacement part engineered for Trane and American Standard gas furnaces. This Single Pole Normally Open (SPNO) switch is factory calibrated with a precise 0. 55" WC open rating and a 0. 65" WC close rating. It serves as the primary safeguard for inducer motor performance, ensuring the combustion blower