Heater errors are pretty much all different, which means that the only people who can help you are folks who have done service work on that INDIVIDUAL heater. With all the heaters out there, that's asking a lot.
I'd recommend going here: http://www.zodiacpoolsystems.com/Pro...rs/Legacy.aspx and downloading the owner and service manuals, and going through them very carefully. Then, if you still haven't found the problem, but have learned the lingo, call Zodiac service, and try to get past the Level 1 techs, to the Level 2's who know something besides what's in the notebook on their desk.
Or . . . you can just call them and find out who the local Zodiac service person is.
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