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including the LG/LC
providing the exact BTU input needed to energize the thermocouple or flame sensor
Check for a clogged HVAC air filter
Engineered for high-demand hydronic environments
Trane SWT2978 Pressure Switch 318820-201 including the LG/LCThe Trane SWT2978 is a heavy duty dual pressure switch engineered for precision safety monitoring within residential and commercial HVAC units. This OEM replacement part is built to monitor critical pressure thresholds, providing a vital safeguard for the compressor and combustion blower. Operating on a 24V AC power supply with an 18A current rating and 28VA pilot duty, it ensures reliable electrical signaling to prevent system strain during high or
