What causes a low millivolt reading

Temporary cleaning with a fine abrasive may restore operation

provided the 30-inch length meets your application requirements

What causes this limit switch to fail

As a genuine Reznor replacement part

C & D CD2245 CD2245/25 Access Valve Cap (25/Pack) What causes a low millivoltThe C&D CD2245 (also known as CD2245 25) is a heavy duty 1 4" flare access valve cap engineered for demanding HVACR service environments. Machined from solid round brass, these caps provide a robust mechanical seal on standard 1 4" SAE male flare fittings, including those found on Schrader valves and service ports. The interior features a reliable neoprene O ring seal, which is critical for preventing refrigerant leaks and protecting the system from