Need help with a Xantrex SW4048
This inverter is about fifteen years old. I installed it around '07and it's been powering my homestead full-time since. It's a little noiser than it used to be but just keeps chugging along. Today though I finally hooked up my AC1. The supply isn't good for more than twenty amps but it's always running and will be a whole new chapter... Except it won't stay synced, the meters menu on the inverter shows the voltage for AC1 fluctuating been 120 and 80VAC. But it's not, the multimeter shows a constant 118VAC at the lugs, and even with a 15A load (a compressor running on the line right before the inverter) the voltage doesn't drop below 115VAC. Is there a way to calibrate the voltage on AC1 or do I have some faulty hardware? Thanks in advance.
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