ThermoKing Tripac APU, AC runs continuously

[Dumitru]

I have 2013 Freightliner with Thermo king APU , everything works just fine but when i got AC mode and set the temparature it always runs and does not stop , it's to cold inside , and i have to turn off APU manual.
it could be the temperature sensor ?

 

[Tazz]

I would say. The controller should have to temp sensors sticking out of it. Clean them off if dirty, and if that is not it probably have to change them.

 

[Duck]

If the temp sensor is located on an exterior wall & it's the side the sunlight is hitting, it'll never turn off.

Same thing in the winter with an Espar heater. It'll be 90° in the cab before it senses 70° when it's attached to the wall.

 

[mndriver]

is the temp sensor even plugged in?

I know after my body shop got done with the repairs to the cab, I found they hadn't even plugged it back into the controller.

 

[Dumitru]

Yes . it's plugged in , and it looks everything fine

 

[Dumitru]

the sensor it's inside and very clean , look like new

 

[mndriver]

That's about the same place mine is located.

If I get a chance, I'll put the trouble shooting process up for this.

 

[Dumitru]

ok . thank you

 

[mndriver]

http://www.autoexpeditor.com/tripac/TriPac_MaintenanceManual.pdf