I have the exact same issue as described. Older Arctic spa was overheating and tripping ground fault. Replaced element then displayed a “prr” code. Now will heat up to set temperature but will not hold the temperature and drops to 59. How did you resolve issue?
Arctic spa continuously resets and displays 59 (degrees F) - is this a circuit board issue or thermometer issue?
in Portable Hot Tubs & Spas
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I have the exact same issue as described. Older Arctic spa was overheating and tripping ground fault. Replaced element then displayed a “prr” code. Now will heat up to set temperature but will not hold the temperature and drops to 59. How did you resolve issue?