What causes a 40/10 MFD capacitor to swell or fail

this is the wiring harness assembly only

Capacitors should always be handled with care and discharged properly before installation to ensure technician safety

How do I install the QC-4 cartridge update

Direct OEM Fit: Guaranteed compatibility with Nordyne

Heil Quaker ICP 1320365 Limit Switch What causes a 40/10 MFDThe Heil Quaker ICP 1320365 Limit Switch is a critical OEM replacement part designed for high temperature safety monitoring in residential and commercial furnaces. This L270 20F limit switch functions as a normally closed safety device that opens the electrical circuit when internal plenum temperatures exceed the 270? F threshold, protecting the heat exchanger from thermal stress. Engineered for ICP heating equipment, it features an auto reset