Code 89 & 21 on thermo king reefer

Ok ,install the gauges(might have to watch youtube video if you never done it) check what the pressure is without running the reefer.The pressure should read the same on both gauges,if there is little or no pressure the reefer is out of freon,you will have to pressurize and leak check system.If the pressure is significant,say 40 to 100 psi,depends on the temperature where you live,then run on cool.Set the temperature at its lowest setting,after a few minutes the engine should go onto high speed,let it run until the box comes down to about 30f .Write down what the suction and discharge pressures are.There is a long vertical tank above the battery with a round sightglass on it,make sure the white ball in it is floating,if it is then freon is ok.Now raise setpoint so the unit will go onto heat,observe your suction and discharge pressures as they should immediatly change,if they don't then the 3 way valve didn't shift into heat.Let me know if that's the case,might be the pilot solenoid coil.

 

Reeferwrencher while you are here quick question. Is Wintrac 5.7 will work with newer S6000 Thermo King units?

 

I think so but i'm not positive.I don't work at TK anymore so I'm not as up to date on the newer units now. Are you flash loading it ?

 

No just to pull info in case of reject product.

 

Ok,if you don't have a flashdrive then you have to have a special plug to connect directly to the board,The Precendent doesn't the same connection as the SB210,230 always had. Maybe you already know that but just in case you didn't.