IO Hvac Controls ZP4-ESP Control Kit 318973-401 this high limit control provides

this high limit control provides the precise thermal protection required to keep your clients' equipment running within safe operating parameters

The standard port configuration manages a reliable 400 PSI CWP rating

This HVAC heating part is commonly found in York GMB05012AXU models and various BGM series gas furnaces

a steady "on" typically indicates normal operation

IO Hvac Controls ZP4-ESP Control Kit 318973-401 this high limit control providesThe IO Hvac Controls ZP4 ESP is a professional grade 4 zone universal control panel designed to streamline multi zone forced air installations. By utilizing integrated ESP (Electronic Static Pressure) technology, this 10 year reliable controller eliminates the necessity for a traditional bypass damper, reducing installation time and physical footprint. The ZP4 ESP control kit is compatible with single stage, multi stage, heat pump, and dual fuel