What's the Best Hot Tub

Author Topic: Ranco Thermostats and how to set HI Lo temps and differential settings  (Read 675 times)


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We moved into a new home with an indoor hot tub. We had it checked and it is working.

We are having trouble getting the right temperature and perhaps we are not setting the differential unit correctly.

Our target temp is 100-101

How should we set the H (high unit) and differential ?
How should we set the L ( unit and differential) 

We watched the ranco demo youtube but not sure of the needed settings.

We are experimenting with differnt settings but the temperature seems to be high.   So we are getting a better thermometer for the pool and wonder if
the ranco units are going bad as they fluctuate in a short time from 99 to 107.

Many thanks for your advice.

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