Carrier Unit Problem

If the oil levels and fluid levels are ok look for a reset button if you can't find it disconnect the battery wait for 15 minutes then reconnect the power & try it again.You may have a fuse or a sensor or the oil pump gone bad but what ever you do don't run the unit with out checking the oil & water.By disconnecting the battery you will reset the whole unit electrical system.

PS. Turning the unit off switch is not going to do it You must kill the power to the unit by disconnecting the battery.

 

is it an apu? or the reefer unit? either way. some of the carrier units have a reset switsh for the ecm. on the reefer it's inside the service door and it says on/off for the cpu. if it's the apu. the reset switch will be under the bunk on the side of the cpu box. or it maybe an in line switch. that should take care of it. if not, then it will be the low oil sensor or a bad wire connection to it.

 

There is a sensor on the oil filter housing unplug it and see if it shuts down. If all else fails you can unbolt the shut off solinoid from the front of the engine you will need a 10 mm wrench take it out and it will run .set the unit on continues run. It will operate fine unless there is a real oil pressure problem in which case it will ruin your engine so be careful. Good luck.

 

Does cutting the reefer on and off causes low oil pressure ????

 

No. Why would it?

 

A11 Alarm Code: Low Engine Oil Pressure.

I had a similar problem recently. Took the Reefer for repairs. The simple solution was replacing the oil pressure sensor. If you encounter such a problem, consider replacing the sensor.