Norcold N61X Service Manual

Also see for N61 Series: Owner's manual Owner's manual Installation manual

Contents

Norcold N61X Service Manual Manual pdf 23 page image

www.norcold.com/cda20 Refrigerator Service ManualN6XX/N8XX ModelsBefore beginning this procedure: Make sure lamp/thermistor assembly is connected to wire harness.TempSettingFlashingN64X/N84XN62X/N82XLP GASACAUTOTempSettingFlashingONGASFlashing once every 3 secondsModels and fault indicator displayed.ThermistorLampConnectionThermistorConnectionsClean/repair terminals or connector asrequired. See Figure A.NOCheck thermistor resistance.See Figure B and procedure below.Wires andconnectorgood?Check lamp/thermistor wireassembly and connector fordirty/broken connections.YESThermistor packed in ice bathMIN MAX RANGE HOLDHHzRELmAAmVVVOFF!!A COM VmA μA1000V MAX400mA MAXFUSED10A MAXFUSEDPEAK MIN MAXμACAT II4 1/2 DIGITS1 Seconds87TRUE RMS MULTIMETERIIITemperature* Resistance*(oF) (k )85 8.1– 9.080 9.1–10.075 10.1–11.070 11.1–12.060 12.1–13.050 15.5–16.540 22.5–23.535 24.5–25.533 28.5–29.532 30.0–32.0*Approximate ValuesN61X/N81XThermistor Failure Fault – Controls in backup operating system modeBackup Operating System (BOS)The backup operating system (BOS) is anelectronically controlled duty cycle that maintains therefrigerator in operation if the thermistor isdisconnected or fails. The BOS maintains cooling bytiming the length of time the heat source is energized.When the refrigerator is operating in BOS, the lengthof the cooling cycle has to be regulated manuallyusing the TEMP switchbutton.When a colder temperature is desired, changing thetemperature setting to a higher number providesadditional cooling by lengthening the cooling cycle.For example, if the temperature setting is set to 5,raising the setting to 6 will lengthen the cooling cycle.When a warmer temperature is desired, changing thetemperature setting to a lower number shortens thecooling cycle. For example, if the temperature settingis set to 6, lowering the setting to 5 will shorten thecooling cycle.N61X/N81X Backup Operation.When the N61X/N81X controls shift to BOS operation,the ON LED (green) flashes once every three seconds.N62X/N82XN64X/N84X Backup OperationWhen the N62X/N82XN64X/N84X controls shift to BOSoperation, the temperature setting flashes for tenseconds when the TEMP button is pressed. After tenseconds, the selected operation mode indicatordisplays.Figure A. Figure B.