DC HI Voltage error code.....DC voltage above 15.4V DC
Normal operating DC range is 10.5V DC to 15.4V DC
DC to your fridge connects to terminals ON the circuit board
DC POS connects to the '12VDC' terminal
DC NEG connects to the 'GND1' terminal
To measure AC Ripple------
Use voltmeter set to AC and then measure the DC Pos/Neg at fridge DC terminal
More then 6V AC and fridge circuit board can cause issues with false errors even turn fridge off
When an AC/DC converter is used to supply DC power, the refrigerator circuit must be connected to the appliance output terminals of the converter (filtered side).
You should go thru the DC Dist Panel where the various fuses are located and ID which one is for the fridge.
If the refrigerator circuit is connected to the unfiltered side, the AC ripple
generated by the converter may cause a dc HI fault code to display.
To troubleshoot a dc HI fault, disconnect DC wires at fridge and connect a charged 12 volt automotive battery to the power board.
If the dc HI code clears, the fault was caused by unfiltered DC power.
If the dc HI code does not clear, replace the power board
