There is an electrical short to ground in the fan switch or in the blower motor itself.
there is a short somewhere in dash or heater, you need to fix that to stop fuses blowing
checkALL of your fuses short could be a problem. i have a 95 blazer, bumps may of screwed up wiring like in mine
There might be a bad fuse causing the heater to not work. Check the fuses if they are all ok you may have a bad blower motor. when you turn the heater on and no air is blowing then it is your blower motor.
bottom element is probably bad. another sign of this is that you run out of hot water fast.
The compressor is coming on because you have the heater set to defrost. Take it off defrost and the compressor will not come on. I would suspect the compressor is locked up.
Beause there is probably a short/bad connection in the switch, or the blower motor itself
Dodges are good for blowing fuses. If that is not it, the fan switch might need replaced.
Check if small water hoses are hot going toward firewall and heater. Fan not blowing? 15 possible problems. Check all fuses.
Find out why the fuse is blowing. You have a short or the circuit is overloaded.
where are the fuses to the radio located at
All fuses are located on the drivers side under the panel. If you cannot get your heater blower to come on, it could be the relay located on the blower motor on the passenger side under the dash. It's a little difficult to get to. Len
Can't get my heater to work on my 156