i am a new to me owner of a 1997 Bounder 35' motorhome (bought it from my parents).
We bought it mainly to do desert trips and ive been trying to troubleshoot the Generator/Intellitec ECC system since i got it. I believe i have identified an issue with the ECC system but this thread is nto about that.
I added some hard start capacitors to the Original Coleman AC units and went today in the heat to test them out. I turned the generator on, started the front AC and let it get running, i then started the rear AC and once the Air Compressor cycled on the draw was so bad it stalled the generator. I had nothing else drawing power and this is the first time this has happened.
I have noticed since i got the unit the rear ac appears to put more of a "load" on the generator when it starts. I dont have access to shorepower at the time.
So today while i was trying to see what is going on, i plugged my volt meter into an outlet and monitored what happens when the rear AC turns on and when the front AC turns on.
Again, this is running the AC's individually because it was stalling the generator today during the heat of the day (107*).
But the Front AC has always sounded "normal" just a click when the compressor turns on and its blowing cold air. the generator doesnt even seem to react to it turning on. Watching my volt meter, the voltage drops from 120 to 98 for a brief second then recovers to 120 ish almost instantly. Here is a youtube video (slowed down to read numbers more clearly)
The rear AC on the other hand definitely seems to put a load on the generator and doesnt seem to just "click" on if that makes sense. Prior to the hard start cap's it wouldnt turn on unless i was very careful about the startup sequence (the ECC problem). When the rear AC turns on the generator dogs down pretty hard then recovers and will run it as long as its the only thing on (during the heat of the day). Reviewing the video, the voltage at the same outlet drops down to 95 volts, then actually takes a bit of time to recover and return to the 120 range. I have a video of that as well.
Im open to replacing the AC unit - however i want that to be the last step. To me it doesnt make sense that the rear has these issues when the front is the one with a lot more time on it (it was my parents MH so i know the usage history).
i have replaced the start caps, and inspected the wiring and other caps. They do not show any signs of failing. However I am not sure where else to go from here or what else to check to verify that i do need to replace the unit. I will say that when the rear AC is on, it does blow ice cold and will run as long as i have it on. Also - it is not blowing any breakers.
Thank you in advance