(1) If the ACAT makes an order under section 68A (a) or (c), the rental rate increase takes effect from the date when the proposed increase would, apart from section 66, have taken place.
(2) The ACAT may, on application, grant a tenant time to pay rent owed because of the operation of subsection (1).
(3) If—
(a) the ACAT makes an order mentioned in section 68A (b) or (c); and
(b) despite section 66, the tenant has paid the lessor the full amount of the rental rate increase proposed by the lessor;
the ACAT may order the lessor to pay to the tenant the difference between the amount the tenant paid to the lessor and the amount that was payable.