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Lukasc

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  1. Hi folks, Solution! This problem has been plaguing me for 15 years. Three years ago, we moved homes into one which had a hottub already, probably from late 2000s. It has a Balboa controller, VS series, model VS501Z. As we use Metric outside of the U.S., I was looking into how to change the temperature unit. There is a dip switch #8 that goes from F to C. I don't recall how I discovered this, but ... While the hottub is powered, I open the heater unit, switch the #8 switch to F, then adjust the temperature up and down a few times. Then I switch to C, and increase the temperature. It lets you get beyond the 40C/104F limit. Namely, I can increase it to 41 or 42, which I find more comfortable. This must be a bug in the firmware, or an intentional back door to someone who likes Celcius! Unfortunately, you need to repeat the above procedure each time you have a power failure or if you change the temperature below 40C. When restarted in C, the limit of 40 applies. Over the past three years, I've done this on average twice a year. I guess one could make this a more permanement solution by mounting a switch on the side of the tub. But it only takes a few minutes so I havent bothered. I hope it is obvious to the reader that opening a live electrical panel with 240V is not recommended. You could die. But if you are successful, you will enjoy a hottub with an accurate reading (versus the resistor approach, which I've successfully employed on other tubs), and the much more pleasant hot water.
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