thermoking apu no heat

[Yauchout]

(02-16-2021 )snailexpress Wrote:  

(02-16-2021 )Yauchout Wrote:  i am not sure if anyone here is familiar with repair on thermoking apu's or Eberspächer bunk heaters but the heat has stopped working on my thermoking apu if i restart the apu (power it off then back on) it will start blowing heat for 30-40 seconds then quit. when i plug the apu it into my laptop the thermoking software shows no error codes or problems shows a cabin temp of 65 and a setpoint of 78 if i go into diagnostics mode and select the heater test it will complete the entire 15 minute diagnostic blowing heat the entire time on high without any problems.

Are you asking about APU or cab air heater?

The APU itself is running just fine but the Eberspächer diesel fired bunk heater it uses to heat the cab when the truck is off is only working in test mode when you try and set a temperature for regular operation it won't heat