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Heat Controller B-VMH09FC-1 Defrost Sensor Board
The defrost control board instructs the outdoor unit to begin the defrost sequence if necessary, to remove frost build-up that may accumulate. The board relies on a specific sensor located near the condenser to make the decision on when to initiate the defrosting cycle.
Subtle hints the AC defrost sensor board will need to be replaced
- Unit defrost session never starts especially when there is a rather large amount of frost built up
- The HVAC system could cease to operate due to the fact that there is too much frost
- The control board might give out an error signal if the defrost board goes out
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If you are going to be buying or ordering, do your due diligence and make sure of the correct model as well as make a visual inspection in order to be sure the proper replacement defrost sensor board is the one being purchased. The installing of a new defrost sensor board is a breeze assuming you energy and have the proper tools to do it right.
Feel free to download your manual for help.
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