I was getting an E04, low input voltage shutdown, error. Measured the voltage at 12.7 volts. The battery is an SOK 100 amp lithium. The Kisae is set to charge a lithium.
To turn the Kisae back on I followed the instruction manual and connected my adjustable power supply to the solar input side, channel 2, and shorted across to the battery side, channel 1.
Hooked the battery up to the shore power charging system over night and brought the battery voltage up to 13.5 volts. Restarted the Kisae using the same method as above. After it was running I removed the short out wire and let it run of the adjustable power supply, on channel 2, for a bit. In this configuration the Kisae would go into float mode, FUL displayed.
I then disconnected the power from channel 2 and the Kisae immediately turns off again. Battery voltage measures 14 volts at the battery terminals. Channel 1 voltage from the battery measures 4.5 volts. The voltage is 14 volts at the fuse between the battery and channel 1.
Next I started the van to see if the Kisae would stay running. Measured 14.5 volts on channel 3, van generator. Shorted across channels 1 and 2 like above. As soon as I removed the short out wire the Kisae turned off.
Basically it looks like the Kisae is not reading the house battery voltage.