A registered provider must ensure that—
relevant equipment is safe for continued use during any period in which the residential premises in which it is provided are occupied under a specified tenancy;
each item of relevant equipment provided in residential premises occupied under a specified tenancy is checked at regular intervals by a qualified person; and
before a specified tenancy commences, each item of relevant equipment provided in the residential premises that will be occupied under the tenancy is checked by a qualified person.
For the purposes of paragraph (1)(b) "at regular intervals" means, in relation to the checking of an item of relevant equipment—
at intervals of no more than 5 years; or
where the most recent ISIT record for that equipment requires the next check to take place by an earlier date, no later than that date.
Regulation 3(2A) and (2B) applies in relation to a duty under paragraph (1) as it applies in relation to a duty under regulation 3(1).