Hoshizaki SWH3-M KM-1601SAH/3, SRH/3 KM-2100SWH3, SRH/3 KM-1400SWH-M, KM-1301SAH/3 Contents

IMPORTANT
This manual should be read carefully before the appliance is serviced. Read
the warnings and guidelines contained in this manual carefully as they provide
essential information for the continued safe use, service, and maintenance of the
appliance. Retain this manual for any further reference that may be necessary.
CONTENTS
Important Safety Information	6
I. Construction and Water/Refrigeration Circuit Diagram	8
A. KM Construction	8
1. Air-Cooled Models (SAH/3)	8
2. Water-Cooled Models (SWH/3/-M)	9
3. Remote Models (SRH/3)	10
B. KMH Construction	11
1. Water-Cooled Models (SWH/3)	11
2. Remote Models (SRH/3)	12
C. Water/Refrigeration Circuit Diagram	13
1. Air-Cooled Models (SAH/3)	13
2. Water-Cooled Models (SWH/3/-M)	14
3a. Remote Models (SRH/3) Except KM-2500SRH3	15
3b. Remote Models (SRH3) KM-2500SRH3	16
II. Sequence of Operation and Service Diagnosis	17
A. Sequence of Operation Flow Chart	17
1. "E" and "G" Control Board without Harvest Pump Timer Operation	17
2. "G" Control Board with Harvest Pump Timer Operation	18
B. Service Diagnosis	19
1. "E" and "G" Control Board without Harvest Pump Timer Diagnosis	20
2. "G" Control Board with Harvest Pump Timer Diagnosis	25
C. Control Board Check	31
D. Bin Control Check	32
E. Float Switch Check and Cleaning	33
1. Float Switch Check	33
2. Float Switch Cleaning	34
F. Thermistor Check	35
G. Diagnostic Tables	36
III. Controls and Adjustments	40
A. Control Board Layout	41
1. "E" Control Board	41
2. "G" Control Board	42
B. LED Lights and Audible Alarm Safeties	43
1. "E" Control Board	43
2. "G" Control Board	44

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