Jandy/Laars Light 2 - temperature regulation

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Russellyyc
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Joined: Fri 12 Jun, 2020 11:36
My Pool: 10 metres x 3 metres, vinyl liner

Jandy/Laars Light 2 - temperature regulation

Postby Russellyyc » Fri 12 Jun, 2020 11:45

I am into the 20th summer with my Jandy/Laars Light 2 heater (250k BTU) - with a Millivolt system. I'm finding that I have to turn the temperature control up further and further each summer to get the same water temperature. The system is firing up fine ... but it just seems like the calibration between the temperature sensor and the thermostat (controlled by the mystical black box circuit board) has changed, and I'm wondering if there's anything I can do to reset this calibration.
Any thoughts ??


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