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I just finished installing an ERR Hot Box reefer Kit Upgrade but cannot get the board to power up or reprogram. I have ac power at the mini commander's green terminal power port but I don"t think the mini commander is powering up. I followed the installation instructions and connected both roller pickups to the hot side of the green power terminal. I then connected the remaining red wires to the white wire terminal HC-1 port and the black ground wire to the power ground connector. I also added an LED with the ERR recommended 1000 ohm 1/4 watt resistor on the positive LED terminal side to the LC-1 connector on the mini commander board.What am I missing or is it possible that I just got a bad ERR board? Any assistance would be most appreciated.

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First things first, can you get the LC-1 LED to light, and can you control it using the "1" and "4" keys on the remote?  Also, I use the jumper to configure instead of the soft-set feature, much easier and more positive.

 

Note that the LED's are polarity sensitive and REQUIRE a dropping resistor or you'll cook them.  The diode is strongly recommended as well, though some people dispute my use of them.

 

 

mc-led

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It looks like my hotbox reefer mini-commander problem was caused by me inserting the reprogramming jumper connector into the wrong pins on the mini-commander board. I mistakenly thought that the marked PCB P1 component location closest to the green power terminal was pin 1 when in fact pins 1 and 2 where the last two pins with the white rectangular base on the board. Thanks GRJ for pointing this out to me. By so doing, I was informed by Ken at ERR that I would have to send the board back for reprogramming as the LC-1 LED port should power up immediately when track power is first applied but unfortunately, my board was not powering up at all thereby necessitating a board reprogramming. In addition, Ken e-mailed me a two page min-commander installation guide that identifies all the mini-commander port locations and output values. If only I would have had this information sooner, I could have avoided this whole mess. Thanks again to everyone who tried to assist me with resolving this issue. This forum is truly a gem to be treasured for our hobby.

Bill

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