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Mitsubishi MSZ-A17NA Defrost Sensor Board
The defrost control board determines when or if to start the defrost sequence in order to keep your outdoor unit from plugging up. The board is relayed information from a defrost sensor located in the outdoor unit to ascertain when to begin.
What are the indications that my outdoor defrost sensor board has to be replaced?
- The HVAC system could cease to operate because of the amount of frost on the outdoor unit
- The control board might issue an error code if the defrost control board fails
- Defrosting never begins even though there is a large amount of frost on the outdoor unit
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If you are going to be buying or ordering a replacement defrost sensor board for your Mitsubishi MSZ-A17NA do your best and make sure of the correct model as well as make a visual inspection in order to be sure the right defrost sensor board is the one being purchased. There is no need to install the part by yourself. Pay a professional in your community to hire and install the part for you.
Feel free to download your manual for help.
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