How do I get access to remove the control board for a Harman Advance

[KAT_57%&]

Hi,
I have a Harman Advance pellet stove.
The pot for stove\room temp is dirty. I would imagine I could simply remove the board, un-solder the pot and replace it, however I cannot figure out how to remove the board!

Thanks in advance! (Pun not indended)
Any help would be appreciated.

 

[Bioburner]

First better correct the spelling in title Welcome, Someone should be happy to help if like me their football team is loosing.