Norcold 1200 Series Service Manual

Also see for 120-IM series: Service manual

Norcold 1200 Series Service Manual Manual pdf 16 page image

1200XX/120X-IMXX Models Refrigerator Service Manual"dc" "HI" Fault Code – DC voltage input to power board is higher than 15.4 voltsNOTEElectronic controls operate on 12 volt DC. When an AC/DC converter isused to supply DC power, the refrigerator circuit must be connected to theappliance output terminals of the converter (filtered side).If the refrigerator circuit is connected to the unfiltered side, the AC ripplegenerated by the converter may cause a "dc HI" fault code to display.To troubleshoot a "dc HI" fault, connect a charged 12 volt automotive batteryto the power board. If the "dc HI" code clears, the fault was caused byunfiltered DC power. If the "dc HI" code does not clear, replace the powerboard (see page 39)."Sr" "CL"/"AC" "rE" Fault Code –AC relay stuck closedBefore beginning this procedure:Make sure RV DC voltage to refrigerator is 10.5 to 15.4 volts.Determine if the “dc” “HI” fault code displays when the converter is the source of DC power.Fault indicator displayed:Voltagehigher than15.4 volts?NOCheck RV DC power distribution torefrigerator.YESSee NOTE below to determineand correct “dc” “HI” fault.Check for DC voltage inputto power board terminals12VDC and GND1.Cold ColdestONOFF MODETEMPSETAC LP GASAUTOAudibleAlarm"dc" and "HI" Flashing1 COLD - 9 COLDEST SET TEMP MODE ON / OFFonAudibleAlarm"dc" and "HI" FlashingFault indicator displayed:Replace power board.See page 39.Flame sense circuit failure.Cold ColdestONOFF MODETEMPSETAC LP GASAUTO 1 COLD - 9 COLDEST SET TEMP MODE ON / OFFon"AC" and "rE" FlashingAudibleAlarm"Sr" and "CL" FlashingAudibleAlarm"AC" LED Flashing12