Resideo SV9520H8513 Smart Valve 318172-701 or the intermittent hot surface

or the intermittent hot surface igniter not receiving the necessary 24V signal through the internal valve relay

When paired with compatible Schneider Electric globe valves

allowing for fast voltage testing at input and output terminals

This industrial globe valve actuator is ideal for proportional control in air handling units and heat exchangers where reliable fail-safe operation is required to prevent coil damage during power loss

using it with other refrigerants will lead to system failure

Resideo SV9520H8513 Smart Valve 318172-701 or the intermittent hot surfaceThe Resideo SV9520H8513 Smart Valve is a robust, all in one combustion control designed for Direct Hot Surface Ignition (HSI) systems. As a veteran grade Honeywell SmartValve replacement, this 24Vac component integrates gas flow regulation and electronic ignition sequencing into a single unit, streamlining troubleshooting and reducing potential leak points in the manifold. Featuring a fast slow opening characteristic, it ensures a smooth transition to