Gauge Issue

[Jor-El]

I need some assistance and I hope you can help. The gauge for my aquarist hfs3 seems to be playing the fool

It randomly, and without warning, seems to cut out. Is there a way to troubleshoot the gauge to see what the issue is?

I at first thought it was the cable, and I ordered one from the website. Bit now I'm uncertain whether the issue is the cable or the gauge. (and the gauge is a little bit too expensive to buy without knowing for sure)

Thanks in advance for the assistance;. I look forward to hearing from you


Regards