Iím assuming it is a Girard.
Iím on a business trip and donít have my manuals in front of me but I believe E5 means the exhaust blower is not turning.
I would do the following:
- Open the outer door and looking into the exhaust and around the blower to see if you see any obstructions keeping the fan from spinning.
- Turn off the white power switch, wait a few seconds and turn it back on. See if the fan briefly moves on power up.
- Try to get your fingers near the fan blade and try to spin the fan to see if it rotated freely or whether it feels stiff.
I had this happen in my last coach and it turned out to be the blower motor. I was able to get Girard to send me a new blower assembly under warranty. I could easily feel the different between the old one and the new one when I tried spinning the fan with my fingers.
The other thing that can cause the E5 is the main board having a problem and not sending voltage to the fan. That is fairly easy to check as well.
Here is a link to the technical manual.....
Replacing the blower motor is a bit of a pain but I was able to do it myself. I could not replace the entire assembly they sent me without removing the entire unit from the coach but I was able
to just swap out the motor itself.
If itís under warranty and you donít want to deal with it, Iíd take it to the dealer.