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Heat Controller SMA 12 Defrost Sensor Board
The defrost control board controls if and when to commence an important defrosting cycle which aids to continue normal heating and cooling operations. The control board is influenced by a specific sensor that can be found near the condenser, in order to ascertain when to begin.
Major warnings your defrost board has little life left
- The AC may not run at all because of the safety issue that the frost poses
- The defrost sequence never runs even though there is quite a bit frost on the unit
- The main control board could throw a type of error code if the defrost board fails
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If you are going to be buying or ordering, do your due diligence and double check the model number as well as make a visual comparison so that you are positive that the correct replacement defrost sensor board is being ordered. Replacing a new defrost sensor board can be quite easy if you have the time and have the proper tools to do it right.
Feel free to download your manual for help.
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