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Open coil. . Replace. start (compressor). Relay . Open contacts. . Replace. b) Control Board . Defective. . See "II.D.4. Control Board Check Procedure." c) Starter (Start Relay) . Bad contacts. . Check for continuity and replace. . Coil winding open. . Replace. 3. Loose connections. 3. Tighten. d) Start Capacitor or Run . Defective. . Replace. Capacitor e) Compressor . Power supply not . Refer to nameplate and within specifications. correct. . Wiring to compressor. . Check for loose or open connection, repair or replace. 3. Defective. 3. Replace. 4. Compressor locked 4. Replace. and internal motor protector tripped. [5] All components a) Refrigerant . Low charge. . See "V.B. Service for run, but no ice is Refrigerant Lines." produced. . Refrigerant line or . Remove the restriction or component restricted. component and replace the drier. 3. Air or moisture 3. Recover refrigerant, trapped. replace drier, evacuate, and recharge. b) Expansion Valve . Bulb loose. . Secure bulb. . Operating erratically. . Check and replace. c) Compressor . Defective. . Replace. 40 Problem Possible Cause Remedy [5] All components d) Evaporator . Defective. . Replace. run, but no ice is e) Water Supply Line . Condenser water . Check and get produced. (continued) (water-cooled model pressure too low or recommended pressure. only) off and high pressure control opens and closes frequently. f) Water Regulating Valve . Water regulating . Clean, adjust, or replace. (water-cooled model valve set too high or only) clogged (water-cooled model only). 2. Low Ice Production Problem Possible Cause Remedy [ ] Low ice production. a)Evaporator . Dirty or defective. . Clean or replace. b)Bin Control . Erratic, sticking, . Clean or replace. defective. c) Drain Valve . Leaking water. . Clean or replace. d)Expansion Valve . Bulb loose. . Secure bulb. . Operating erratically. . Check and replace. e)Refrigerant Charge . Low charge. . See "V.B. Service for Refrigerant Lines." . Overcharge. . See "V.B. Service for Refrigerant Lines." f) Refrigerant Line . Refrigerant line or . Repair/replace the component restricted. clogged line/component and replace the drier. g)High-Side Pressure . Dirty air filter or . Clean. Too High condenser. . Ambient (or . Reduce temperature. condenser) water temperature too warm. 3. Fan motor slow rpm. 3. See "3. [ ] a) Fan Motor." 4. Fan motor capacitor. 4. Check and replace. 5. Condenser water 5. Check and get pressure too low or off recommended pressure. (water-cooled model only). 6. Water regulating 6. Clean, adjust, or replace. valve set too high or clogged (water-cooled model only). h)Compressor . Inefficient compressor. . Replace . Faulty thermal . Replace compressor. protector (overload). 3. Faulty capacitor/ 3. Replace. starter. 4 3. Other Problem Possible Cause Remedy [ ] Icemaker will not stop when bin is filled with ice. a)Bin Control . Actuator sticking. . Adjust or replace. . Proximity switch closed. . Replace. [ ] Abnormal noise. a)Fan Motor (except water-cooled model) . Bearing worn out. . Replace. . Fan blade deformed. . Replace fan blade. 3. Fan blade does not move freely. 3. Replace. b)Compressor . Bearings worn out, or cylinder valve broken. . Replace. . Mounting pad out of position. . Reinstall. c) Refrigerant Lines . Rub or touch other lines or surfaces. . Reposition. d)Auger . Bearings or auger worn out. . Replace bearings or auger. See "V.F. Removal and Replacement of Evaporator Assembly Components." e)Gear Motor . Bearing or gear worn out / damaged. . Replace. f) Evaporator . Scale on inside wall of evaporator freezing cylinder. . Use "SCALE AWAY" or "LIME-A-WAY" solution to clean periodically. See "VI. A. Cleaning and Sanitizing Instructions." If the water is found hard by testing, install a softener. . Evaporator defective. . Replace. g)Extruding Head Heater . Heater Control Relay defective. . Replace. . Heater defective. . Replace. [3] Overflow from reservoir (water does not stop). a)Water Supply . Water pressure too high. . Install a pressure reducing valve. b)Inlet Water Valve . Diaphragm does not close. . Clean or replace. c) Float Switch . Bad contacts. . Check for continuity and replace. d)Water Control Relay . Bad contacts. . Replace 4 Problem Possible Cause Remedy [4] Gear motor overload protector operates a)Power Supply . Not within specifications. . Refer to nameplate and correct. frequently or fuse blows frequently. b)Evaporator Assembly . Bearings or auger worn out. . Replace bearings or auger. See "V.F. . Upper Bearing Wear Check." c) Bin Control . Bad contacts. . Check for continuity and replace. . Actuator does not move freely. . Clean actuator or replace bin control assembly. d)Safety Switch and Relay . Switch misaligned, contacts bad. . Check and correct or replace. e)Control Board . Erratic operation of gear motor relay. . See "II.D.4. Control Board Check Procedure." 4. Dispensing Problem Possible Cause Remedy [ ] No ice dispensed. a) Power Supply . "OFF" position. . Move to "ON" pos...

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