TriPac APU Alarm Codes

Heyy!! My TK Evolution is throwing code 93 Low Pressure Cut Out. Do you know where that sensor is.. might try changing that. Please let me know and any instructions would be helpful. Thanks

 

Here's a detailed description of Code 93 (add freon): Thebooq - human knowledge database
This website (https://thebooq.com) also has many major APU codes descriptions. It's a wiki website, feel free to edit/add there.

 

Where is the breaker on the control panel?

 

Mine is under the bunk. It is a button on the side of the box that just pushes in. I have an older model don't know if they are a difference or not.

 

How long does that process take? I just replaced the truck radiator, and I'm getting the engine code. I think I have air in my system.

 

Does the apu run for awhile 10-20min or shut down in just a couple minutes?

 

Both. It seems to have a mind of its own.

 

I would use a temp gun and shoot the thermostat housing and confirm the temp. I think it should be 175* or less. If that’s good then check temp sensor.

 

I'm getting that same code (93 Low Pressure Cut Out). I've changed the LPCO and also recharged the system but no luck. Compressor kicks on for about 10-15 seconds and shuts off. Did you ever get yours fixed?

 

The High Pressure Switch close the Dryer yes if you remove it you will loose all your freon but the Low Pressure Switch inside de cab close the coil evaporator by the expansion valve have a core valve so freon don’t come out