Hernandez said the news was a relief and he couldn't wait to get back to training.
"I was very happy when they told me I could carry on playing,'' he said. "While everyone at the club has been positive throughout there is a lot more confidence after three wins, and with two home games to come I wanted to be a part of it.''
The news also keeps Hernandez's World Cup hopes alive. An extended spell on the sidelines would have put his chances of playing in this year's finals in Brazil in jeopardy
It wasn't such good news for fullback Louis Fenton, who requires surgery for his shoulder injury and will be missing for the rest of the season.
Fenton first dislocated his right shoulder during a pre-season game against New Zealand A in Rotorua and missed the start of the season.
The young fullback fell heavily on it during the 3-1 win over Western Sydney on New Years Day and it popped out again.
"Louis requires surgery and will see the surgeon early next week,'' Merrick said. "His shoulder is too unstable to continue playing so we will get the operation done as soon as possible.''
Fenton said the news he will miss the rest of the season was the hardest thing he has had to take.
"People keep telling me that it is part of football, but it isn't a part I wanted to experience,'' Fenton said. "After the injury in Rotorua I worked hard and did all the right things so this was hard to take.
"I just thought I was getting the hang of playing right back and Ernie had shown a lot of faith in me. The good part is I still have another year on my contract and will be making sure I do everything right to be back next season.''