Common indicators include the boiler entering a lockout state

this HVAC pressure switch ensures system integrity by cutting power to the contactor before excessive discharge pressure can cause damage

the board is functional

scorch marks

Hankison F04-HF-DG1 Filter 321042-401 Common indicators include the boilerThe Hankison F04 HF DG1 Filter is a high performance 1 2" NPT coalescing filter engineered for critical compressed air filtration in industrial environments. As part of the HF Series, this high efficiency oil removal filter is designed to protect downstream pneumatic equipment from abrasive solids, water droplets, and hydrocarbon aerosols. Utilizing a borosilicate fiberglass matrix blended fiber media, it achieves a 99. 999% capture rate of particles