Hoshizaki KM-901MAH, KM-901MWH, KM-901MRH/3 service manual

3. Controls and Adjustments	32
a) Default Dip Switch Settings	32
b) Harvest Timer (S4 dip switch 1 & 2)	32
c) Pump-Out Timer (S4 dip switch 3 & 4)	33
d) Pump-Out Frequency Control (S4 dip switch 5 & 6)	33
e) Bin Control Selector/Harvest Pump Timer (S4 dip switch 7)	34
f) Factory Use (S4 dip switch 8)	34
g) Freeze Timer (S4 dip switch 9 & 10)	35
h) Float Switch Control (S5 dip switch 1): "G" Control Board	35
i) Refill Counter (S5 dip switch 2 through 5): "G" Control Board	35
D. Bin Control	36
1. Thermostatic Bin Control: Auxiliary Code T-0, U-0	36
2. Mechanical Bin Control: Auxiliary Code U-1 and Later	36
E. Float Switch	36
F. Thermistor	36
G. Control Switch	36
III. Technical Information	37
A. Water Circuit and Refrigeration Circuit	37
1. KM-901MAH (air-cooled)	37
2. KM-901MWH (water-cooled)	38
3. KM-901MRH/3 (remote air-cooled)	39
B. Wiring Diagrams	40
1. Thermostatic Bin Control: Auxiliary Code T-0, U-0	40
a) KM-901MAH (air-cooled) and KM-901MWH (water-cooled)	40
b) KM-901MRH (remote air-cooled)	41
c) KM-901MRH3 (remote air-cooled)	42
2. Mechanical Bin Control: Auxiliary Code U-1 and Later	43
a) KM-901MAH (air-cooled) and KM-901MWH (water-cooled)	43
b) KM-901MRH (remote air-cooled)	44
c) KM-901MRH3 (remote air-cooled)	45
C. Performance Data	46
1. KM-901MAH (air-cooled)	46
2. KM-901MWH (water-cooled)	47
3. KM-901MRH (remote air-cooled)	48
4. KM-901MRH3 (remote air-cooled)	49
IV. Service Diagnosis	50
A. Diagnostic Procedure	50
B. Control Board Check	53
C. Bin Control Check	54
1. Thermostatic Bin Control Check: Auxiliary Code T-0, U-0	54
2. Mechanical Bin Control Check and Cleaning: Auxiliary Code U-1 and Later	55
a) Mechanical Bin Control Check	55
b) Mechanical Bin Control Cleaning	56
D. Float Switch Check and Cleaning	57
1. Float Switch Check	57
2. Float Switch Cleaning	58
E. Thermistor Check	59
F. Diagnostic Charts	60