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technicians should inspect the defrost control board
This part is commonly found in 5-ton capacity Bard wall-mount units
How do I service the unit if it fails to drain
The hardware includes a 10-square-inch backlit display
Engineered for precise fuel distribution
Watts F121465 Relief Valve L99H008 technicians should inspect the defrostThe Watts F121465 LF174A 50 FS is a 3 4 inch lead free pressure relief valve designed for boiler, hydronic heating, and hot water system protection. Rated at 50 PSI, this valve helps prevent excessive pressure buildup that can damage boilers, piping, storage tanks, and connected HVAC equipment. In residential and commercial hydronic systems, pressure relief valves are critical safety components that automatically discharge excess pressure to maintain