E-07 and web lock up

[MrEd]

Right, we've given everything a good clean, shortened the 12 volt connections as we were seeing quite a voltage drop, and I'm seeing the situation where all seems to be going fine, then it just seems to stop responding and then goes to "Shutting down" then once that's finished, starts up again. The log seems pretty unhelpful:

JSON send: {"FanRPM":4290}

JSON send: {"FanVoltage":7.2}
JSON send: {"IP_STARSSI":-47}
JSON send: {"FanRPM":4270}
JSON send: {"PumpCount":3834.056,"SysTotalFuel":8128.319}
JSON send: {"TempBody":215,"FanVoltage":7.4}
JSON send: {"FanRPM":4290}
JSON send: {"FanVoltage":7.3}
JSON send: {"FanRPM":4300,"FanVoltage":7.4}
JSON send: {"IP_STARSSI":-46}
JSON send: {"PumpCount":3891.23,"SysTotalFuel":8129.577}
JSON send: {"FanRPM":4290,"FanVoltage":7.3}
JSON send: {"FanRPM":4300,"FanVoltage":7.4}
JSON send: {"TempCurrent":9.6,"Temp1Current":9.6}
JSON send: {"FanRPM":4290}
JSON send: {"PumpCount":3948.425,"SysTotalFuel":8130.835}
JSON send: {"FanRPM":4300}

And that was all she wrote.