Weil McLain 510-312-250 Limit Switch 30067439-890 or pressure switch lockout codes

or pressure switch lockout codes caused by vacuum loss

This sensor is engineered to withstand harsh exterior conditions

specifically 5-150 PSI for air and 1-125 PSI for water

Reliable 44 in-lb torque output for effective damper and valve operation

Weil McLain 510-312-250 Limit Switch 30067439-890 or pressure switch lockout codesThe Weil McLain 510 312 250 High Limit Temperature Control is a critical safety component designed for precise thermal regulation in hydronic heating systems. This aquastat replacement operates on an auto recycle logic, ensuring the burner circuit interrupts when water temperature hits the high limit setpoint to prevent boiler overheating. It features an adjustable temperature range of 140F to 240F and utilizes a 30F fixed subtractive differential,