Hoshizaki HUR40A(-D) - Manual (Page 4)

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4. Operating Modes ................................................................................................... 31
a) Continuous ....................................................................................................... 32
b) Energy Saving .................................................................................................. 32
c) Automatic Corrections Made During Energy Saving Operating Mode .............. 32
E. Perimeter Frame Heater .............................................................................................. 32
III. Service Diagnosis ........................................................................................................... 33
A. Alarm Codes ............................................................................................................... 33
1. Alarm Display Priority ............................................................................................. 34
2. Alarm Details and Countermeasures ..................................................................... 35
a. High Temperature Alarm (E1) ........................................................................... 35
b. Low Temperature Alarm (E2) ............................................................................ 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 .......................................................................................................... 42
C. Thermistor Check ........................................................................................................ 45
IV. Removal and Replacement of Components ................................................................... 46
A. Service for Refrigerant Lines ....................................................................................... 46
1. Refrigerant Recovery ............................................................................................. 46
2. 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 .................................................................. 52
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
A2. 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
C2. HUR68A(-D), HWR68A(-D) (auxiliary code Q6 and later) ........................................ 62
D. HUF68A(-D), HWF68A(-D) ......................................................................................... 63
E. HUR96A(-D), HWR96A(-D)......................................................................................... 64