He failed to return to his vehicle the same day, prompting a search which started on Sunday, and at its peak involved more than 60 people. It will continue this weekend.
Mr Palmer (53), a University of Otago health science library assistant who has type 1 diabetes, went missing in what was expected to be a three to four-hour tramp on the Dingle Burn Track in the Ahuriri Conservation Park.
The search operation management team said the operation would restart this morning, with about 25 searchers and two specialist search dogs.
Fresh searchers were now in place, and the management team had also been replaced.
The search operation had been reviewed by search and rescue experts. The search yesterday involved 50 people in 19 search teams and further staff at the operations base. Mr Palmer's brother, Lenny, also assisted.
They focused on areas in the vicinity of where he went missing, including ridges and valleys leading to higher points at the head of the Dingle Burn Track.
These included covering the highest point in the search area, Mt Gladwish (1861m), which may have been an area Mr Palmer walked to, based on photographs he had taken when he previously visited the park.
The search team also covered steep gorges with waterways.
However, they turned up no new information.
