Join Date: Aug 2018
Location: Lowell area, MA
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For the benefit of those who may be able to help, can you provide more details?
What does it do, how are you testing the behavior?
Do you mean it stays at the higher no-load RPM, ~4300? Rather than dropping to 3000 no-load, in Eco? Do you have a tachometer?
If you add, say, an 800-1000W load, something in that range, do the RPMs increase? As I recall, the Eco-off RPM (~4300) should be able to support pretty much the rated 1600W, without needing to speed up further.
Just trying to understand the "back-story" of what you're seeing. Do you have the service manual? I haven't looked in there for Eco troubleshooting, but maybe there's something.