Apu constantly cycling on and off

[Distein]

So I've been in my truck for about 2 months. I just came off my first home time(about a week).

Of course I made the rookie mistake and never checked to see if my TK Tripac was on sentry mode before I took my week off.

So I came back to a very dead truck. I jumped the truck and ran for a bit. At first the apu wouldn't start at all. Now it runs but only for a few minutes then shuts off for a minute and then cycles right back on.
The control unit doesn't show the error light. It just runs then shuts down then starts right back up.

I was just hoping if anyone had idea of what this could be to maybe avoid a trip to TK.

 

[mndriver]

Likely you've got a bad battery. It's sensing the voltage and needing to charge.


That's where I'd start looking.

 

[ironpony]

Likely you've got a bad battery. It's sensing the voltage and needing to charge.


That's where I'd start looking.

Agreed. Load testing the batteries is where I'd start, especially in a truck that's new to you.

 

[mndriver]

When I'm home, I keep one of these plugged in on the truck.

Since I started doing that, my batteries are going on three years old.


Power Tender 5 Amp Battery Charger

 

[Distein]

Ok will start there, thanks for the help.

 

[Injun]

If one battery is bad, they're all bad. Don't get roped into just replacing one.

 

[Mike]

When I'm home, I keep one of these plugged in on the truck.

Since I started doing that, my batteries are going on three years old.


Power Tender 5 Amp Battery Charger

I’m considering a solar setup in the future for this very same reason.

 

[mndriver]

I’m considering a solar setup in the future for this very same reason.

I haven't found one I'd trust the controller on yet.