A few months ago the temperature reading on the panel display began fluctuating wildly when I set the temp. above 95 degrees. This problem seemed to have fixed itself and everything worked well for a few weeks. Now, I get a "P r r" error meaning that there is a problem with the digital regulator probe which is placed in a dry well, no contact with the water. The display reads 35 degrees, but the water is luke warm. Placing the probe in the water raises the temp 1 or 2 degrees only. All other buttons work normally. I'm wondering if I just need a new probe, or an entire circuit board. Problem is, I cannot find the exact replacement board (# MSPA-1-P122-P212-B2-O2-CP2, LS-HV-AMP-T2-SB).

If I replace the entire control box, what brands would be compatable (and least expensive)?

Thanks,
LB

though I can probably find your circuit, you most likely just need a new temperature sensor. which I can also find. Otherwise I do have a few new control systems that I would reccomend to replace your current unit for less $$$ than a new PCB.
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