It turns out that the fault with Hvammstangi geophone station was a software issue. Not a hardware issue. I have now fixed this after instructions from the manufacturer of the hardware. This was a software bug. If this had been a hardware issue. It would have been a lot harder to fix. The Hvammstangi geophone station is now running normally. Any earthquake activity in TFZ appears best on this geophone station.
Volcano and earthquake activity in Iceland