A failed coil will show open resistance (Infinite Ohms) when tested with a multimeter

When you're dealing with excessive mechanical resonance or rattling in a hanging unit heater

these parts are identical

including Honeywell

the 767A-372 utilizes 5 1/4" leads and a side-locking Molex plug

Honeywell 50001774-001 Immersion Well A failed coil will showThe Honeywell 50001774 001 is a high grade 304 stainless steel immersion well engineered for precision temperature monitoring in hydronic, boiler, and HVACR systems. Designed with a 5 inch insertion length and a standard 1 2" NPT external thread, this Honeywell immersion well assembly provides a robust, corrosion resistant protective sleeve for temperature sensors, ensuring long term thermal conductivity without exposing internal elements to the