Tip: Test Your Crankcase Heaters
By: Gary McCreadie
It might be actual arduous for me to depend the quantity of occasions I’ve come throughout a tripped breaker or blown fuse resulting from a failed crankcase heater. It is sensible although, loads manufactures do not present an auxillary contact or thermostat to chop its operation when not wanted. They’re uncovered to the weather and various compressor temperatures contribute to the growth and contraction of the heater. Crankcase heaters are used to guard the compressor from liquid refrigerant migration through the off cycle and are an essential consider stopping flooded begins. In my expertise, crankcase heaters are over appeared throughout preventative upkeep, discovering failed or faulty heaters may end up in creating reputable work. Additionally, if you’re experiencing a scenario with a tripped breaker, inspecting the crankcase heater just isn’t a nasty place to start troubleshooting. Fortuitously, there’s a product that does not require additional controls to manage warmth. Common, self regulated crankcase heaters can be found and so they match varied compressor sizes. Emerson EasyHeat is nice instance of such a heater.
Preserve In Thoughts: When wiring in a crankcase heater using auxillary contacts, make sure that the heater is powered on the compressor “off” cycle and never vice versa, a mistake that has been made by a number of techs.
This video demonstrates the steps taken to diagnose a faulty crankcase heater
https://www.youtube.com/watch?v=wMG_E0sS2yk
On this video the above faulty heater is changed
Try the hyperlink to my YouTube channel for extra ideas, tips, and troubleshooting movies and take a look at the The HVAC Know It All podcast right here or in your favorite podcast app. Pleased HVACing…
Gary McCreadie
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