or intermittent pressure switch fault codes caused by improper drainage

The unit contains two separate switches: one to interrupt the burner circuit in a low-water event and another that can trigger an external alarm or signal an automatic water feeder to replenish the boiler

ensuring reliable positioning in demanding commercial HVAC environments

also frequently referred to as a personality plug

providing a reliable seal that standard generic valves often fail to maintain over time

ASCO 8321G1 Valve 318973-401 or intermittent pressure switch faultThe ASCO 8321G1 Valve is a high performance 3 way normally closed solenoid valve engineered for rapid system response. This pilot operated quick exhaust valve features a 1 4" NPT connection and is designed to handle air, water, and light oil with a pressure range of 10 200 PSI. Built with a rugged brass body and durable NBR seals and discs, the 8321G1 ensures tight shutoff and reliable operation in demanding HVACR and industrial environments. The