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Desa B150J Limit Switch
The limit switch has a sensor in the air handler that makes the determination when the air is warmed to a point for the blower to be activated. The main reason limit switches are made is because if the air is not warm enough the you will lose heat in the ducts and the vents will just blow cool air.
Major indications limit type switch should need replacing
- The Desa system is beginning to initiate and then stops on more than one occasion
- The HVAC system will not begin the ignition sequence or will not stay running for any significant length if time
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If you are going to be buying or purchasing a replacement limit switch for your Desa B150J, do your due diligence and double check the correct model as well as make a visual inspection in order to be sure the proper replacement limit switch is being ordered. HVAC pros could be quite expensive to hire so you could call around to acquire the best rate if you do not want to pay too much.
Feel free to download your manual for help.
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