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Fujitsu ASU12RMLQ Defrost Sensor Board
The defrost sensor control board controls if and when to commence the defrost cycle which may be necessary to keep the outdoor unit free from frost build-up. The defrost sensor board depends on a temperature sensor located near the condenser to determine when to begin.
Signals of a defective Fujitsu defrost sensor board
- Your main control board may throw an error number produced by a bad defrost control board
- The defrost feature never initiates even though there is a lot of frost that has built up
- The system may end up not running for the simple fact of frost blocking the fins on the outside unit
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If you are going to be buying or ordering any Fujitsu ASU12RMLQ part do your best and cross-check the correct model and also make a visual inspection so that you are positive that the right defrost sensor board is the one being purchased. There is no rule that says you have to install it yourself. Hire a pro in your community to replace the part.
Feel free to download your manual for help.
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