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4. Operating Modes ................................................................................................... 31
a) Continuous ....................................................................................................... 3
b) Energy Saving ................................................................................................. 3
c) Automatic Corrections Made During Energy Saving Operating Mode ............. 3
E. Perimeter Frame Heater ............................................................................................. 3
III. Service Diagnosis ........................................................................................................... 33
A. Alarm Codes ............................................................................................................... 33
1. Alarm Display Priority ............................................................................................ 34
. Alarm Details and Countermeasures .................................................................... 35
a. High Temperature Alarm (E1) .......................................................................... 35
b. Low Temperature Alarm (E) ........................................................................... 36
c. Defrost Alarm (E3) ........................................................................................... 37
d. High Pressure Alarm (E4) ................................................................................ 37
e. Clogged Filter Alarm (E7) ................................................................................ 38
f. Defrost Temperature Sensor Malfunction Alarm (E8) ....................................... 39
g. Clogged Filter Sensor Malfunction Alarm (E9) ................................................. 40
h. Control Board Error Alarms (EA and ED) ........................................................ 41
B. Diagnosis Chart .......................................................................................................... 4
C. Thermistor Check ....................................................................................................... 45
IV. Removal and Replacement of Components .................................................................. 46
A. Service for Refrigerant Lines ...................................................................................... 46
1. Refrigerant Recovery ............................................................................................ 46
. Brazing .................................................................................................................. 46
3. Evacuation and Recharge .................................................................................... 47
B. Removal and Replacement of Refrigeration Unit........................................................ 48
C. Removal and Replacement of Compressor ................................................................ 48
D. Removal and Replacement of Evaporator .................................................................. 49
E. Removal and Replacement of Capillary Tube / Suction Line Assembly ..................... 51
F. Removal and Replacement of Thermistors ................................................................. 5
G. Removal and Replacement of Door Gasket ............................................................... 53
H. Removal and Replacement of Defrost Heater ............................................................ 53
I. Removal and Replacement of Control Board ............................................................... 54
J. Removal and Replacement of Fan Motors .................................................................. 55
K. Door Re-Hinging and Drawer Conversion .................................................................. 55
V. Cleaning and Maintenance Instructions .......................................................................... 56
A. Cleaning ...................................................................................................................... 56
B. Maintenance ............................................................................................................... 57
VI. Wiring Diagrams ............................................................................................................ 58
A1. HUR40A, HWR40A (auxiliary code Q5 and earlier).................................................. 58
A. HUR40A(-D), HWR40A(-D) (auxiliary code Q6 and later) ....................................... 59
B. HUF40A(-D), HWF40A(-D) ......................................................................................... 60
C1. HUR68A, HWR68A (auxiliary code Q5 and earlier) ................................................. 61
C. HUR68A(-D), HWR68A(-D) (auxiliary code Q6 and later) ........................................ 6
D. HUF68A(-D), HWF68A(-D) ......................................................................................... 63
E. HUR96A(-D), HWR96A(-D) ........................................................................................ 64