"She has also ordered for complete checking of the existing wirings, fittings and equipment," said a statement issued by the Lok Sabha Secretariat.
The fire took place in an AC Plant in plot no. 118 in Parliament House Complex and the fire was controlled "within some time".
No casualty was reported, the statement said, adding "the Speaker has asked for a detailed report".
It took 10 fire engines about 30 minutes to douse the flames, fire officials said.
The two Houses of Parliament, Lok Sabha and Rajya Sabha, went on a month-long break from last Friday.