The EC07 error code and fan noise on your Furrion 18K BTU Variable Speed RV rooftop air conditioner typically indicate a fan alignment or motherboard issue. Since you have already reset the power, checked all connections, and reset the motherboard per Furrion and Lippert troubleshooting steps, the ongoing wobbling noise and non-functioning turbo button suggest a hardware defect. Elkhart RV Parts has initiated a replacement process for your unit under order number 10019933. You can expect a new unit to be shipped soon, and a tracking number will be provided via email. Regarding a protection plan, these are not automatically included with purchase but may be available upon request. For further assistance or to inquire about protection plans, contact Elkhart RV Parts customer service directly. This replacement approach ensures you receive a fully functional AC unit without incurring technician fees, as Elkhart RV Parts and Lippert support the resolution for units with manufacturer defects.