Thermoking SB-210 Communication failure lost controller connect

Discussion in 'Refrigerated Trucking Forum' started by FCBexpress, Jun 10, 2021.

  1. FCBexpress

    FCBexpress Bobtail Member

    1
    0
    Jun 10, 2021
    0
    Hi all,
    I have a Thermo king SB-210 with about 15k hours on it. I was recently driving with my reefer on and when I parked I came outside to an off unit with a message of "Communication failure lost controller connect". I initially was thinking maybe there's a wire that came loose with the rough drive, so I restarted the unit and it was running for about 2 hours with no movement and I got the same message again. Any ideas?

    Thanks in advance!
     
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  3. reeferwrencher

    reeferwrencher Medium Load Member

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    684
    Aug 4, 2018
    0
    Tighten battery terminals then open control box.Check for 12 volts at board if it has 12 volts and led light in center of board isn't flashing then board is bad.
     
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