His biggest achievement during this period was an unexpected silver medal in 2001, after having lost the title race to bookies favourites Rosenborg BK.

During his time in HamKam he managed to coach the team back into the Norwegian top flight on one occasion.

Erlandsen signed a short-term contract with Moss in July 2013 to help the team avoid relegation from the 2.

[2] Erlandsen signed on a season contract with Fredrikstad in May 2015 and succeeded in helping the team to avoid relegation from the 1.

After saving the club from relegation, Lillestrøm could finally celebrate their 100 year-anniversary in their 42nd consecutive season in the top tier of Norwegian football.

[5] Ahead of the 2023 season he was hired as the new head coach of third-tier club Kvik Halden FK.