Norcold Ice Maker Service manual
Contents
1. AC PC BOARD PC BOARD CONNECTION CONNECTION Ice Maker Wiring Pictorial NORCOLD ICE MAK SCHEMATIC SHUT OFF SWITCH MANUAL OFF NO MOLD HEATER ARM UP LD _HEATE OSTAT 120V AC BLK nr Fics a ies HOT OE oor ie s j NC 120V AC ARM DN NEUTRAL WATER SOLENOID Sb ep O HOLDING SWITCH2. between test points L amp V to energize the water valve If an audible click or buzzing is observed the water valve is functional Ohm Readings If the water valve is not functional 1 Disconnect the refrigerators AC power cord from the wall receptacle 2 Use a volt ohmmeter insert meter leads into test points V amp N 3 Reading between 295 and 360 ohms indicate water valve is functional 4 Reading is infinity maximum reading there is a loose wire connection at the water valve s terminals or the water valve is defective Repair loose connection or replace water valve 5 Reading of 0 indicates a short in the wiring from the ice maker to the water valve or a defective water valve Repair the short or replace the water valve Mold Heater Use a volt ohmmeter and insert meter leads into test points L amp H 1 75 ohm reading indicates the mold heater is functional 2 Reading either an open or a short requires replacement of the ice maker assembly F1GURE 4 FIGURE 5 C503 FIGURE 6 ON M V H a D Se FIGURE 7 Motor Check Out Figure 10 Use a volt ohmmeter and insert meter leads into test points M amp N 120 volts should be present If 120 volts is not present replace the Ice Maker assembly Testing Motor and Cycle Function Figure 11 This test procedure is to be performed while the ice maker is dry and at roo
3. Ice Maker Trouble Shooting Procedures Ice Maker Specifications Volts 120 volts AC Amp Draw cycle on heater off 03 amps Amp Draw cycle on heater on 1 6 amps Amp Draw cycle off 0 amps Inlet water pressure 15 125 psi Duration of 1 cycle 3 5 to 7 minutes Ice Yield 3 lbs 24 hours Ice Maker Requirements 1 Cold potable water supply at pressures between 15 psi and 125 psi 2 120 Volts AC supply 108 VAC min 132 VAC max 3 1 4 O D cooper tubing compression nut compression sleeve and 90 degree tubing adapter supplied with refrig erator or an approved plastic tubing 4 1 4 Shut off valve in water supply line Should be accessible when the lower vent door is open Problem Probable Cause Remedy Problem Probable Cause Remedy 1 Refrigerator Cooling 1 A C power disconnected 1 Connect A C power No ice in bin 2 Broken wire or loose connection 2 Locate and repair 3 Shut off arm in storage position 3 Place in normal operation position 4 Water supply shut off 4 Restore water supply 5 Inoperative water valve 5 Check valve and inlet filter for re strictions or solenoid coil failure Repair or replace 6 Excessive frost build up causing 6 Defrost unit inspect for door Shut off arm to hang up gasket leak 2 Low ice yield 1 Ventilation of refrigeration not in 1 Install in accordance with Section accordance with Norcold s Vent 2 of this manual ing Requirements S
4. ee Section 2 2 Insufficient refrigeration 2 Check 120 VAC power 108 VAC min 132 max 12 VDC Power 10 5 VDC min 15 4 VDC max 3 Not enough water supply pressure 3 A Check for restrictions in water lines or water valve B Check for correct water pressure min 15 PSI max 125 PSI 4 Thermostat setting too warm 4 Adjust Thermostat setting 3 Excessive water dripping on ice 1 Excessive water pressure 1 Correct water pressure cubes or from Ice Maker mold min 15 PSI max 125 PSI 2 Water valve sticking open 2 Check for contaminated inlet filter or replace water valve 4 Ice maker mold overfilling with water Defective water valve Replace water valve 5 Ice cubes are milky or have taste Water hardness or food stored in ice bin Advise customer to have water supply inspected and refrain from storing food in the ice bin C503 Trouble Shooting Procedures These check out procedures are based on 12 Volts DC Control Voltage is available to the Refrigerator 120 Volts AC is available to the refrigerator and to the Ice Maker Water pressure to the Ice Maker is at 15 psi min 125 psi max Thermostat is set at mid range setting or higher Refrigerator is performing satisfactory and has been operating long enough to reach ice making temperatures The Ice Maker s shut off arm in the down ON position Location of Test Test points are located behind the wh
5. ite cover plate To gain acccess to the test point the ice maker is oe Test Points required to be moved from the freezer 5 16 Mounting Screws g Ice Maker Removal 1 Remove the ice bin and shelf 2 Remove the two 5 16 mounting screws 3 With a Phillips screwdriver remove the 2 screws under the Ice Maker 4 Pull Ice Maker forward to remove 5 Remove white cover plate 6 Follow Check Out procedures White Cover Plate Rie Ice Bin Shelf FIGURE 1 Note The wire harness is equipped with a thermal fuse The fuse protects the ice maker mold from overheating If the fuse is open the wire harness rerquires repplacement ra Wire Harness Check Figure 6 ua The wire harness has a thermal fuse The fuse protects the ice maker mold from overheating If the fuse is open the wire harness requires replacement Use a volt ohmmeter and check for 120 volts AC between test points L and N Note Insure your meter leads contact the surfaces of the test points If 120 volts is present proceed to Water Valve check out om If 120 volts is not present replace the ice maker s wir ing harness FIGURE 2 C503 Water Valve Check Energizing the Water Valve A Caution To prevent an electrical shock use an insulated jumper wire Note If water is available to the water valve performing the procedure below may over flow the ice maker s mold Insert an insulated jumper wire
6. m temperature The test cycle will take approximately 3 7 minutes to complete During the cycle the shut off arm will raise and lower slowly while the mold heater is on and the ejector mechanism simulates ejecting the ice Approximately 3 4 through the cycle the water valve will energize for 7 seconds allowing water if available to the valve to fill the ice maker mold cavity Note If water is available to the water valve perform ing the procedure below may overflow the ice maker s mold To perform this test Caution To prevent an electrical shock use an insulated jumper wire 1 Insert an insulated jumper wire between and into test points T amp H Within 15 20 seconds an audible click will be observed indicating the start of the ice ejection cycle Remove the insulated jumper wire once the cycle begins 2 lf an audible click is not heard start with the Wire Har ness Check procedure to locate the problem 3 If an audible click is heard the ice maker assembly is functional and does not require repair Pictorial Before July 1 1995 Pictorial Beginning July 1 1995 ICE MAKER ICE MAKER NORCGLD ICE MAKER PICTORIAL Ji THERMAL FUSE THERMAL FUSE GRN GROUND NORCOLD ICE MAKER PICTORIAL BRN WHT SS WATER HOT SMOOTH SOLENOID AC POWER NEUTRAL RIBBED ERN GROUND NEUTRAL RIBBED HOT SMOOTH 120V
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