(a) Notice of the hearing to consider the termination of the conservatorship shall be given for the period and in the manner provided in Chapter 3 (commencing with Section 1460) of Part 1.
(b) If the court sets a hearing pursuant to paragraph (2) of subdivision (a) of Section 1850 and no petition is filed, the court shall order the conservator to give notice of the hearing as provided in subdivision (a), and to appear at the hearing and show cause why the conservatorship should not be terminated.