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Nordyne M3RL Series Defrost Sensor Board
The defrost sensor board will begin the defrost sequence which assists to keep the outdoor unit free from frost build-up. The control board relies on a temperature sensor located near the condenser to determine when the defrost cycle should begin.
Cues of a barely functioning AC defrost sensor board
- Self defrost sequence never initiates especially when there is frost that makes the unit run like crap
- The main circuit board could display a specific error code referring to a bad defrost board
- The HVAC system could not run at all because of frost blocking the fins on the outside unit
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Before buying or ordering do your best and cross-check the model number as well as make a visual comparison in order to be sure the correct defrost sensor board is being ordered. You do not have to replace the part all by yourself. Pay a professional in your town or city to pay to install it for you.
Feel free to download your manual for help.
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