No AC with only battery

[tharasym]

I am just doing some checks on my '09 19H that I just bought and noticed that my a/c unit (even just the fan) doesn't work unless I am plugged in. When I am plugged in it works great. My interior lights work fine when I'm not plugged in, does this mean I am in need of a new battery (enough charge for lights but not enough for a/c?) Or is there a different problem? Or is the a/c only meant to be used when plugged in? Anyway, Thanks for your responses.

[Griswald One]

A/c is a power hog.. You need to be plugged in and most likely to a 30amp service to run it.

[oldmanAZ]

Originally Posted by tharasym

I am just doing some checks on my '09 19H that I just bought and noticed that my a/c unit (even just the fan) doesn't work unless I am plugged in. When I am plugged in it works great. My interior lights work fine when I'm not plugged in, does this mean I am in need of a new battery (enough charge for lights but not enough for a/c?) Or is there a different problem? Or is the a/c only meant to be used when plugged in? Anyway, Thanks for your responses.

Two different power sources:

The a/c only meant to be used when plugged in. It is on 120 volt alternating power only.

Interior lights are on 12 volt direct current power only from your TT battery.

[tharasym]

Great. Thanks folks

[Griswald One]

Quick suggestion... I am guessing this RV is new to you and you are likely new to RVing... If the previous owner was not kind enough to leave you the manuals, do a quick Google search and you should be able to download them for your model.... And then read it cover to cover. It really is important to understand how the systems in your rig operate.