This may be a little late as you may have already found the answer. But most "Fantasy" spas have "Balboa" control system. They are either a heat control knob, or Up/Down arrows on the spa side control system. If you have the know & it is all the way turned to max position, and still not hot enough, then you may well have a faulty "Temperature Sensor". Get a replacement from your local DreamMaker dealership. Easy to replace.
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This may be a little late as you may have already found the answer. But most "Fantasy" spas have "Balboa" control system. They are either a heat control knob, or Up/Down arrows on the spa side control system.
If you have the know & it is all the way turned to max position, and still not hot enough, then you may well have a faulty "Temperature Sensor". Get a replacement from your local DreamMaker dealership. Easy to replace.