Microwave Blowing Fuse

[kgerber]

Hello Everyone,
Sorry if this is the wrong place to post this question. This is my first post to this forum. Please feel free to move if necessary.

I have a 2017 Reflection 367BHS. The microwave is a Furrion FMCM15-BL. There is a glass cylinder fuse located behind the vent cowl above the door. When I close the door this fuse is constantly blowing.

I don't know if the unit is trashed or if I bought the wrong fuse as a replacement. The original (to me) fuse said 125V and 20A. After looking at fuses for a while I realized there are MANY different kinds (AC, DC, MDL, AGC, GDL, MDQ, GGC, MDM, SFE, etc.). The fuse I bought was a Bussman 125V 20A AGC.

I called Grand Design and they said they don't trouble shoot internal components of microwaves. I called Furrion and they wouldn't troubleshoot it either. Best they could do was offer me 20% off a new one.

Is the whole thing shot?
Did I buy the wrong fuse?
Does it really matter?
Can I replace the board or something rather than buy a whole new one?

Any advice would be greatly appreciated.

Regards,
Kyle