Technical Information
4
KF 18xx/19xx
4.46 Optical Interface (MDU) Position Indication ....................................... 75
4.47 Manually Defrosting the Evaporators ................................................. 75
032 Icemaker .................................................................................................. 76
2 Function ......................................................................................................... 76
2.1 Plumbing ............................................................................................ 76
2.2 Water Valves ..................................................................................... 76
2.3 Icemaker NTC (R30/21) ..................................................................... 77
2.4 Ice Cube Production .......................................................................... 77
2.5 Water Filter ........................................................................................ 77
3 Fault Repair ................................................................................................... 78
3.1 Icemaker Self-Test ............................................................................. 78
3.2 Fault Code Summary ......................................................................... 79
4 Service .......................................................................................................... 82
4.1 Water Filter Replacement .................................................................. 82
4.2 Icemaker Removal ............................................................................. 83
4.3 Disconnecting the Water Line ............................................................ 85
040 Technical Service Bulletins ................................................................... 87
1 How to Make Sure the Door Switch is Working ............................................. 87
2 Control Electronic on Some Cooling Appliances May Randomly Stop
Responding ......................................................................................................... 88
3 Refrigerator Door Reminder .......................................................................... 88
4 How to Replace the Rear Wheels on a Refrigerator ..................................... 89
5 Refrigeration Merge Kits: Replacement Cover Strip Is Now Available .......... 92
6 MasterCool Touch Controls Do Not Respond ............................................... 92
7 All about Master Cool and Icemakers ............................................................ 92
8 F 1471 Dispenser Flap .................................................................................. 94
9 Icemaker Diagnosis Update .......................................................................... 94
10 Advanced Icemaker Troubleshooting ............................................................ 95
11 Banking Pins Are Now Available for Refrigerators ........................................ 96
12 Conversion Kit - Cover for Freezer Door ....................................................... 97
13 Master Cool & Merge Kits ............................................................................. 97
14 Master Cool – Filter Light Reset .................................................................... 98
List of Figures
Figure 030-1: NEMA 5-15 Outlet ..................................................................................... 15
Figure 030-2: Main Power Board with Switch (Sample) .................................................. 15
Figure 030-3: Condenser Fan and Components (Top View) .......................................... 17
Figure 030-4: MasterCool Controls ................................................................................. 18
Figure 030-5: Magnetic Actuator on Refrigerator Door Switch ....................................... 20
Figure 030-6: Defrost Heater and Evaporator (Shown for Refrigerator) ......................... 21
Figure 030-7: Drain Heater and Evaporator Pan ............................................................ 22
Figure 030-8: Drain Channel ........................................................................................... 22
Figure 030-9: VCC Compressor and Frequency Control Board ..................................... 23
Figure 030-10: Closed Air Flaps/High Humidity .............................................................. 25
Figure 030-11: Open Air Flaps/Low Humidity ................................................................. 25
Figure 030-12: Air Flow through the Appliance ............................................................... 26