How To Fix Thermo King APU High Coolant Temp

This is a quick video of me fixing my APU when it was saying that the coolant temperature was too high. If you like the video hit the thumbs up and subscribe is free. 

[@Cozysmoov]

did this method fix the issue since this post? cause i had the same error message.. i took it to thermoking n they had to repair my wires.. but weeks later i got the same error 18 message

[@teeenews]

@@Cozysmoov yeah I have been good it was one day it said it was to hot but it was 100 degrees that day. I have it a hour to cool off and opened the apu door and it ran ok