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Mac 250 Krypton HTCO


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Hi guys,


One of my Mac250 Kryptons is (as the title suggests) giving a HTCO error.


The lamp strikes and the head runs fine for about 45 minutes before the error message appears.


I've replaced the loom from the arm to the head (which was snapped in places), the lamp, the temperature sensor from a known working unit, cleaned the fans & vents...is there anything that I'm missing?



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  • 2 weeks later...
Hey man I have had this issue with mine remove the metal housing above the fan to make sure the fan is really clean and the light sensor is also clean, Next thing Is it giving an LERR and HTCO? Did you reset the timmer on the lamp? I know all of that sounds crazy but I found this light is really picky
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