Comments on: Thermo King Tripac APU

By: omar

omar — Sun, 03 Jul 2011 02:34:37 +0000

unit wouldn't start, gives eng code, checked all fuses, the fuel filter has deisel, but still doesn't work….I sprayed feil starter in the back of it, it started until the feul that I sprayed burn then stoped, tried again but same problem……any help

By: willie

willie — Sat, 02 Jul 2011 19:29:51 +0000

loose belt, corroded wire connections from the alternator or on your batteries, or the alternator itself. before you do anything, clean all connections on your battery and while you're at it, check those connections on the tripac to the alternator. i had this same issue and it has run perfectly since using a steel brush on all those connections.

By: willie

willie — Sat, 02 Jul 2011 19:27:56 +0000

make sure your fan is turning on. the fan on the tripac that cools the engine…

By: willie

willie — Sat, 02 Jul 2011 17:54:23 +0000

it's drawing too hard. possibly a wire is dirty or your battery connections are a complete corroded mess…

By: willie

willie — Sat, 02 Jul 2011 17:53:01 +0000

it's possible the connections to the batteries need to be disconnected and cleaned. you should be getting good voltage readings when the apu is running (12-13.5 at least) set apu in null mode and it will keep the batteries charged while you sleep. check those connections to the battery. they are vital and should be cleaned regularly…

By: willie

willie — Sat, 02 Jul 2011 17:49:36 +0000

recently i had a problem with an al code shutting down the apu after about 5 minutes. i tore that apu apart and got in there with a steel brush and disconnected every wire connection from the alternator and cleaned those connections. i was amazed at the amount corrosion and rust i had to scrape off. this consistent failure has gone away and the apu has been fine for about 3 weeks…

By: willie

willie — Sat, 02 Jul 2011 17:40:25 +0000

i was told to run that heater set at 90 degrees every couple weeks when you get a cold morning. this clears the fuel line to the heater below the bunk…

By: willie

willie — Sat, 02 Jul 2011 17:37:56 +0000

if your truck is hard starting, i would advise you to turn off your inverter when you fire up the truck… at least until you clean the terminals to the battery. i blew this fuse twice because i would leave the inverter on. i always shut it off when i turn over the truck…

By: willie

willie — Sat, 02 Jul 2011 17:35:56 +0000

no power to the inverter may mean you blew the fuse that's in the battery box.. positive wire goes to this fuse from the inverter and then to the battery terminal from the other side…
it's about the size of a deck of cards… the newer ones are a bit smaller.

By: chris

chris — Sun, 19 Jun 2011 03:11:13 +0000

when out side temp is 93-97 degrees. tri pac turns off. when temp falls to 86 degrees it runs fine i have a code of EN9. can anyone help