Troubleshooting my aging S Class Gecko hot tub controller became a frustrating exercise as the control panel stubbornly refused to cooperate with my attempts to keep the stupid spa heated. Despite my efforts, the water temperature remained stubbornly below the desired level, even after replacing all the sensors with brand new ones. Even the recent installation of a 230v pump motor and a wet end replacement failed to resolve the issue. The heater dutifully heated up the water, only to be abruptly shut off by the electrical controller upon reaching a high-temp sensor reading of 118 degrees Fahrenheit.

Check out this step by step video on how I replaced my S Class with a new Y Class Gecko Spa Controller

After trying everything else, I reluctantly considered the option of purchasing a new control panel, bracing myself for the hefty price tag of over $500 USD. However, my hopes were dashed upon discovering that the S Class controller, a relic of the past, was no longer in production. Undeterred, I embarked on a quest for a suitable replacement, eventually settling on the more modern Gecko In.Ye-5-H4.0.

The Y series controller extends beyond its compatibility with the defunct S Class; it’s also compatible with other outdated controllers such as the M Class and XE, as well as certain Balboa systems. With a 230v power supply already in place, the seamless integration of the In.Ye-5-H4.0 into my hot tub system seemed like a logical choice. Its versatility allowed for effortless operation of 120v/230v 2-speed Aqua Flo Master XP2 Pumps, ensuring optimal performance and energy efficiency.

Excited by the prospect of modernizing my hot tub, I eagerly unwrapped the new controller, accompanied by its sleek, upgraded topside computer display, the In.K200-20P. This nice new topside controller screen was a decent upgrade.

As I started the installation process, I was struck by the seamless integration facilitated by Gecko’s user-friendly design. With decent wiring diagrams inside the panel, it was fairly simple breathing new life into my beloved hot tub. My video should help you, too!

With the new control panel in place, I eagerly put it to the test, anxiously monitoring the water temperature as it gradually rose to the desired level. To my delight, the In.Ye-5 exhibited flawless performance, maintaining optimal temperature levels with precision and efficiency. Gone were the days of frustration and uncertainty; in their place, a renewed sense of satisfaction and enjoyment permeated every soak in the rejuvenated hot tub.

In retrospect, the decision to upgrade to the Gecko In Ye-5 proved to be a wise investment, not only in terms of functionality but also in revitalizing the overall hot tub experience. With its more modern technology and seamless compatibility, it ensures many more years of relaxation and enjoyment in my cherished oasis.

Here is a link to a post I made about fixing a leaky wet end to a hot tub pump, and another video on how to build your own homemade cedar hot tub cover.

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