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I am very sorry your question has not been picked up yet.
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If the system is over 5 years old, the odds are high that 59 is a bogus error code (about half of the error codes are not accurate on these systems, the older it is, the more likely the error code is not accurate).
However we can check it out,
First lets try switching Line 1 and Line 2 at the contactor you replaced, that is a bit of long shot but worth a try... and then check for voltage **between** line 1 and Line 2. Tell me what voltage read you get.
Depending on what you discover we can some further testing, and a heat stress test on the printed circuit card, depending on how old it is.,
We can go from there.