If your friend keeps blowing you off, I think that you should confront him/her about his/her behaviour in a cool, calm way. My advice would be to talk to your friend calmly and ask why they blew you off. They might have a very good explanation!
You need to call a qualified heating contractor for service.
You may have a problem in the pump. Take it off and check .
yes
Bad fan relay or tstat.
It can be. My dad keeps it on and my mom keeps it off
Probably to make exuses for why you can't hang out. Blowing your friends off can be mean, especialy if you blow them off a lot.
had similar problem ended up being pigtail for my trailer lights had a bad connector and a spot where insulation rubbed off creating a short and blowing that fuse
It sounds like the guy is trying to gently tell he doesn't want to see you anymore. It would be best if you back off and see how things go.
Taking the limiter off means that you're pushing more amps than intended through the motor, which is why the fuse keeps blowing. Blowing fuses is a sure sign that something is wrong, either in the machine or its usage. Back off and put the limiter back before you destroy something expensive. If that doesn't worry you you can always try with a higher rated fuse.
confront the girl and tell her that your "friend" is seeing him and for her to back off nicely...
The hose diameter has stretch bigger then factory specks. Or the vacuum pressure is higher than expected.
try talking to his guy friends and maybe he will start to talk to you again....or ask one of his friends to talk to him for you