We have a Blue Ridge Spa Model 45 - approx 4 years old. The problem is that the digital thermostat displayed 104 - but the water wasnt at all hot - we placed a manual thermometer in the tub and itreads about 95 degrees. I tried increasing the temperature - but not the led reads 109 and the manual one still shows about 95. By placing my hand in the tub its abviously closer to the 95.......Please Help!!!!