Help! Powerpac APU problem

have u checked the telephone cord going between the electrical box and controller

 

As always, excellent help and advice from the man from Cinci Freightliner...

 

Just going off your profile location, but here are IL listed dealers/service centers. Try giving them a call for 'over the phone' help.

Peterbilt Northern Illinois – Wadsworth
Ph: (800) 813-5661
Local Phone: (847) 395-7222

Peterbilt Illinois – Rockford
Ph: (877) 222-0013
Local Phone: (815) 874-3433

Peterbilt Central Illinois – Bloomington
Phone: (800) 813-5668
Local Phone: (309) 662-1331


Also did a quick search for the online manual.

It mentions "The Fault State is entered if an input reaches an out-of-bounds limit. The generator is immediately stopped. A Power Cycle/Reset is required to exit the Fault state. The LED blinks the Fault Code(s)."

Did it shut down or are you just unable to start?

 

We have 3 of these units and when I have had it say communication failure, just unhook the battery cables at the battery so it resets the ecm for the apu and should take care of the problem, ours was caused by a bad battery the unit was hooked to

 

Just wondering did you get this fixed? What turned out to be the issue? I've got one doing the same thing. It will start sometimes.. run for a while.. then shut down with a communication error and its done for a while.

 

I have the same issue with mine. I contacted Powertech and they told me to try unpluging the plugs on the controller inside the unit and repluging them.. No joy.. then they suggested taking the plugs off and replacing them with female spades...no joy.. finally I ended up buying a new controller and installing it.. still no joy.. Now I have been told I will have to replace the old style controller with the new updated one. I will of course get full credit for my purchased controller. Just haven't gotten to the shop to get it done yet. So if something else fixes this problem for you I would love to know what it was. I miss my APU