(b)referring the matter back to the adjudicating authority with directions for fresh adjudication or decision, as the case may be, in the following cases, namely: -(i)where an order or decision has been passed without following the principles of natural justice; or(ii)where no order or decision has been passed after re-assessment under section 17; or(iii)where an order of refund under section 27 has been issued by crediting the amount to Fund without recording any finding on the evidence produced by the applicant.]