North Sydney Olympic Pool has closed to swimmers due to a power supply problem just one week after the $122 million facility had reopened to much fanfare following a five-year renovation.

North Sydney Council on Friday morning said the Milsons Point complex had shut temporarily after staff detected a problem with the power supply to its indoor pool, prompting it to empty the pool of swimmers and clear the entire complex for safety reasons late on Thursday afternoon.

The electrical glitch could not be fixed overnight. There was no estimate for how long the pool would be shut, a council spokeswoman said.

“Contractors and technical specialists have been working throughout the night to resolve the issue and complete the works as quickly as possible,” she said. “Council understands the community’s disappointment and apologises for the disruption.”

The council said the closure meant the pool, gym, learn to swim lessons and group fitness classes were all unavailable.

Mayor Zoe Baker said the closure was regrettable, but she said part of the reason the pool had opened in winter was to allow the council to “iron out” any problems before the busy summer months.

“As soon as it can safely be opened, it will be,” Baker said.

More than 10,000 visitors poured through the turnstiles for the pool’s opening weekend after a renovation plagued by cost blowouts, scope creep, legal stoushes and delays.

The new complex includes a 50-metre heated outdoor pool, a 25-metre indoor pool, a program pool, a new 970-seat grandstand, and a children’s splash pad and water play area.

There is also a reformer Pilates studio, a swim school, a creche, a spa, a sauna, a steam room and a Ripples café and gelato bar.

It also features underfloor heating and a swimsuit dryer in the change rooms, and brass frog motifs that have been inlaid in the tiles around the outdoor pool, inspired by frogs depicted in the eastern wall, costing $42,000. The outdoor pool is filled with treated saltwater drawn from Sydney Harbour.

Developer Icon completed construction and handed control of the facility to the council in May.

The pool closed for redevelopment in February 2021 and work began that March. It was originally forecast to reopen in November 2022. The initial estimated cost was $58 million.

North Sydney residents face a 52 per cent jump in rates over three years to help fund the project.

Baker said the rate increase and commercial use of the pool would help repair the council’s finances, pay off debts and fund ongoing maintenance of the complex.