Rabin Rabindran will step aside after three months in the role as acting chair at Counties Manukau Health. (File)

Counties Manukau Health's acting chair Rabin Rabindran is understood to have told the Health Minister he doesn't want to stay on in the role.

Rabindran was under pressure from the Ministry of Health following damning revelations about Middlemore Hospital being plagued by toxic mould and raw sewage leaks.

Health Minister David Clark told Stuff on Wednesday he had written to Rabindran and one other board member about their position.

JARRED WILLIAMSON/STUFF Counties Manukau Health chair Rabin Rabindran has told Health Minister David Clark he didn't want to continue in the role. (File)

While Rabindran remains the acting chair for now, it's understood he told Clark's office on Thursday night that he didn't want to continue in the role and would step aside from the board regardless of Clark's final decision.

READ MORE:

* Minister of Health confirms he has written to DHB chair about top job

* Sewage leaks add to problems at Middlemore

* Mould in Middlemore Hospital buildings so advanced it could breach walls, report shows

On Friday afternoon Clark said Rabindran "remains the acting chair of the Counties Manukau DHB".

"As I indicated earlier in the week, I have written to him about his position and asked for submissions. An announcement about the outcome of that process will be made in due course."

The DHB refused to confirm if Rabindran had resigned.

"As there is a process underway we cannot comment," she said.

Rabindran was appointed to the position in December after Lester Levy resigned as chairman of all three Auckland DHBs.

He was previously director of Auckland Transport and the chairman of Auckland Regional Transport Authority.