Hoshizaki HWR68A(-D) Operating Modes, a Continuous, b Energy Saving, E. Perimeter Frame Heater

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