Community Forums

oldeguy · 12-28-2019, 06:56 AM

I'm having an issue with blowing the 25 amp fuse for the blower motor. first one blow on my drive home after the purchase. It lasted about 1.5 hours. Replaced it. The second fuse lasted about an hour. My third replacement lasted about 1/2 hour and it was at the mid-range blower speed. So, something is strange. The blow seems to work properly, not making any noises...seems ok. Is this fuse only for the blower motor, or does it protect (fuse) something else? Anybody got any insight?

rag_ftw · 12-28-2019, 09:16 AM

You might want to check the squirrel cage blower for cleanliness or binding. Those fuses are trying to tell you something is wrong. I would investigate the problem and not keep throwing fuses at it.

There was an old post on the TS forum where someone said the same fuse was used for the Equalizer system. Have not verified this info! You could pull the fuse and see if it removes power from your leveling jacks.

oldeguy · 12-29-2019, 01:02 PM

OK, well this fuse feeds something else other than blower motor. Here is what I've done. blower fan off, turn the ignition key to on, I hear noise front driver side. Key off, pull fuse...key the noise is gone. Also, tried the leveling jack they power up with the key on and fuse out. I don't think the coach made this noise before on key on at startup?

oldeguy · 12-30-2019, 08:08 AM

well, looking at the heater box I see an electric vacuum pump for the heater controls. Does this run 100% of the time? my guess is yes. and with the selector knob in the windshield mode, the A/C fan on heat exchanger runs, it doesn't in any other heater mode? so, it looks like this fuse takes fan for A/C, blower fan, and vacuum motor on one circuit. can't really find it on the wiring diagram...getting an 11 X 17 printed version made...I like paper! still in progress!