Ohio Revised Code Title XXVII. Courts Revised Code General Provisions Special Remedies § 2712.30

(A) If the mandate of an arbitrator terminates, a substitute arbitrator shall be appointed according to the rules applicable to the appointment of the arbitrator being replaced.

(B) Unless otherwise agreed to by the parties, when the substitute arbitrator is appointed:

(C) An order or ruling of the arbitral tribunal made prior to the replacement of an arbitrator under this section is not invalid because there has been a change in the composition of the tribunal.