Ask 'Dr. Spa' Q & A Message Board

It would help if we knew the model and year of manufacture. Assuming for now that this tub is a few years old and has a Balboa controller, you have no method of turning the tub temp up beyond 104 F. There is a way to trick it into believing that the temp is lower than it actually is by adding resistance to the sensors (in series, not in parallel), but this would also skew the temperature readout and must be accomplished by trial and error. I suggest starting with a value around 1 kiloohms and work up from there.

If the motor is a single speed, there is no way to throttle back on the flow rate. Some Coleman jets are adjustable, but it sounds like you have an issue with non-adjustable jets.

John

: Hi, I purchased a coleman spa second hand and its great. There are two
: small things I'd like to tweak if possible.

: 1. I'd like to raise the the max temperature beyond 104 to perhaps 107.
: I presume this can be done by flipping a dip switch but I'm not sure.
: Does any one have experience with this?

: 2. The one pump that's joined to the waterfall and floor jet is very
: strong. I'd like to turn it down a bit. Is there a way to make the
: pump run at reduced HP?

: Thanks, Rudy