Comfort Pro Apu Issues (solved)

The screen came on and I was able to get to the fault screen and its showing CCU 3545 main breaker tripped

 

Thank you for responding and attempting to help! Appreciate it

 

Useful Bulletin

http://www.impcotechnologies.com/pdf/manuals/IB-5110_A.PDF

 

Hi
My confort pro
At inside display is continuously giving me a message of
Main engine interlock and don’t start
Anyone knows what it is
Thank you

 

The interlock is meant to keep your APU off when the ignition is on. Some people prefer to leave this feature off when they have their units installed.

So is it properly functioning and your ignition is on. Or you possibly have a relay that is stuck. You can disable this by looking inside your APU on the top right side where the alternator side is, on the firewall you should see a yellow little wire there should be a fuse holder with a 5 amp fuse in there, pull the fuse.

 

Thanks for your reply
I disconnected the 12 pin plug last night waited for few minutes and reconnected back and works wall night long fine .
I tried started again today and same message
Did the same reset and started again now
I recently changed myself the generator

 

When I start my APU on ac mode it blows warm air and shows main breaker trip, I reset breaker but doesn’t help anything, what could be causing the breaker to trip?

 

You'll need to say what kind of APU.

I have a Carrier PC-6000. One of the main wires to my compressor literally burned in two and was shorting against the top of the compressor. I fixed the wire and the problem went away.

 

Carrier PC 6000 series

 

The breaker is on your CCU board. Theyre non serviceable and you'll need a new board.