Kioti CK30HST 2014 glow plugs indicator light

[Kioto]

Hi, I have read treads about gp but did not find any related with my problem: the gp indicator light remains lit even after starting the engine. In fact, it turn off only after the cooling fluid temp increase (1 or 2 min after firing up) The dealer send me a new controler but that did not solve the issue. I check connectors at the battery and at the gp relay and everything is ok (new tractor, only 35 hours) Also, I put a test light on the gp terminal and current is passing when the key is ON and the indicator light is lit. Any tought?

 

[Kioto]

Update: It seems that the part I changed is the Display Unit, it replace the separate controler and gp relay from previous years. I also changed the ignition switch but the problem was not resolved.

 

[Kioto]

Update: Changed the cooling fluid temp sensor, the problem is still there.