Inteli-power 9200 getting very hot

[davenav1953]

I just bought an 08 National Sea Breeze
It has an Inteli-power 9200 converter.
When you are plugged into shore power and running both AC units the conver seems to operate correctly and when you disconnect shore power and fun both AC units on the generator it also seems to be operating correctly. It gets a little warm and the fan in the unit comes on and goes off now and then.

The problem I am having is when you are driving down the road an have the generator running and have one or both AC units running, the converter gets very hot. You can’t keep your hand on it.
Sometimes under these conditions the generator will shut down.

[wolfe10]

davenav1953,


Welcome to iRV2.


You need to do some diagnosis. With the engine running, the alternator should charge both battery banks. So, the converter should be doing very little work.


Start by troubleshooting the alternator to both battery bank charging (with no shore power or generator on).



BTW, a battery with bad cell can also overwork your charging system, but it would work the converter harder with the engine off (assuming the alternator charging system is working as designed).

[davenav1953]

Thanks it will be a day or so before I can do the testing.
I did check the battery cells on both batteries with a cell tester and they are all very good.

[Gary RVRoamer]

What is the possibility that the 9200 isn't getting adequate ventilation when the coach is moving? Or that the alternator charging is somehow causing an overheat condition in the battery bay? The alternator may be charging at a high voltage, 14+

[twinboat]

Check polarity on the battery cables.

Do you have 6 volt batteries with cables in the wrong places ?

[TandW]

Heat soak from the 8.1 up front.

[davenav1953]

The basement bay has ventilation but there is the possibility that heat from the engine is getting in there.
I have noticed that the inverter that is next to the converter is also hot when the converter gets hot. And I have the inverter turned off while plugged into shore power and when on the generator. The converter also seems to be very cool when running the two AC units on shore power or generator.
I’ll take it for a drive in a few days and see if I can figure out if that’s the problem.

The batteries are in another compartment and seem to be ok heat wise.

[davenav1953]

You might be right
I’ll try to figure out if that’s the problem.
If it is I might be able to put an intake scoop to put fresh air into that compartment.
It has ventilation screen in the back of that compartment .