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Mitsubishi MSZ-A18YV Defrost Sensor Board
The defrost control board determines when or if to start the defrosting phase if necessary, to get rid of the frost that collects on the outdoor unit. It looks to a specific sensor located near the condenser to verify when the defrost cycle should begin.
How can I tell if my defrost sensor board is in need of a replacement?
- The defrost sequence never begins despite that there is a large amount frost in the way
- The main board may show an error signal if the defrost board goes out
- The whole system may cease to operate at all because of frost blocking the airflow outside
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Before buying or ordering, do your due diligence and make sure of the model number as well as make a visual comparison so that you are positive that the right defrost sensor board is the one being purchased. It is easy to replace a defrost sensor board on your Mitsubishi MSZ-A18YV so long as you know how to and have all the necessary tools to do the job right.
Feel free to download your manual for help.
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