Dunedin City Council parks and recreation planning manager Jendi Paterson said an electrical fault occurred in the pool plant room on Monday night which resulted in damage to pipes.
Contractors were working yesterday to try to bypass the damaged pipes, but the heat pump line had also suffered heat damage, was leaking and would need replacing.
Parts were expected to arrive tomorrow and once the work was carried out, the pool water needed to be treated and heated.
It was not known what caused the fault.
Ms Paterson hoped the pool would be reopened late tomorrow.