Ohio Rev. Code § 1310.60: Waiver of lessee's objections - UCC 2A-514.

(A) In rejecting goods, a lessee's failure to state a particular defect that is ascertainable by reasonable inspection precludes the lessee from relying on the defect to justify rejection or to establish default if either of the following applies:

(1) The lessor or supplier could have cured the defect as provided in section 1310.59 of the Revised Code if the defect had been stated seasonably;

(2) Between merchants, the lessor or supplier, after the rejection of the goods, made a request in writing for a full and final written statement of all defects on which the lessee proposes to rely.

(B) A lessee's failure to reserve rights when paying rent or other consideration against documents precludes recovery of the payment for defects apparent in the documents.