Hoshizaki SRC-14H User manual

Hoshizaki
“A Superior Degree
of Reliability”
www.hoshizaki.com
Models
FS-1001MLH-C with SRC-10H
FS-1022MLH-C with SRC-10H
FS-1500MLH-C with SRC-14H
Modular Cubelet Serenity Series with
"F-A" Control Board
Hoshizaki America, Inc.
Number: 73203
Issued: 1-5-2015
Revised: 1-7-2015
SERVICE MANUAL

2
WARNING
Only qualied service technicians should install and service the appliance. To
obtain the name and phone number of your local Hoshizaki Certied Service
Representative, visit www.hoshizaki.com. No service should be undertaken until
the technician has thoroughly read this Service Manual. Failure to service and
maintain the appliance in accordance with this manual will adversely affect safety,
performance, component life, and warranty coverage and may result in costly water
damage. Proper installation is the responsibility of the installer. Product failure or
property damage due to improper installation is not covered under warranty.
Hoshizaki provides this manual primarily to assist qualied service technicians in the
service of the appliance.
Should the reader have any questions or concerns which have not been satisfactorily
addressed, please call, send an e-mail message, or write to the Hoshizaki Technical
Support Department for assistance.
Phone: [phone]
Fax: [phone]
E-mail: [email protected]
HOSHIZAKI AMERICA, INC.
618 Highway 74 South
Peachtree City, GA 30269
Attn: Hoshizaki Technical Support Department
Web Site: www.hoshizaki.com
NOTE: To expedite assistance, all correspondence/communication MUST include the
following information:
• Model Number
• Serial Number
• Complete and detailed explanation of the problem.

3
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 ................................................................................................. 5
I. Construction and Water/Refrigeration Circuit Diagram ....................................................... 8
A. Construction.................................................................................................................. 8
1. Icemaker .................................................................................................................. 8
2. Condensing Unit ...................................................................................................... 9
3. Icemaking Unit....................................................................................................... 10
B. Water/Refrigeration Circuit Diagram.............................................................................11
II. Sequence of Operation and Service Diagnosis............................................................... 12
A. Sequence of Operation Flow Chart............................................................................. 12
1. Icemaking and Drain Cycle .................................................................................... 12
2. Shutdown .............................................................................................................. 13
B. Service Diagnosis ....................................................................................................... 14
C. Control Board Check................................................................................................... 22
D. Bin Control Check ....................................................................................................... 27
E. Float Switch Check and Cleaning ............................................................................... 31
F. Diagnostic Tables......................................................................................................... 33
III. Controls and Adjustments............................................................................................... 36
A. Control Board .............................................................................................................. 36
1. Control Board Layout ............................................................................................. 37
2. LED Lights and Audible Alarm Safeties ................................................................. 38
3. Ice Purge Cycle Bypass......................................................................................... 39
B. Controls and Adjustments ........................................................................................... 39
1. Default Dip Switch Settings .................................................................................... 39
2. BC1 (Infrared Sensor) Shutdown Delay (S1 dip switch 1, 2, 3) ............................ 40
3. Drain Frequency Control (S1 dip switch 4) ............................................................ 40
4. Continuous Dispensing Timer (S1 dip switch 5 & 6).............................................. 40
5. Bin Control Selector (S1 dip switch 7) ................................................................... 41
6. BC (Mechanical Stand-Alone) Shutdown Delay (S1 dip switch 8)......................... 41
7. Factory Use (S1 Dip Switch 9 & 10) ....................................................................... 41
C. Power Switch and Control Switch................................................................................ 42
IV. Refrigeration Circuit and Component Service Information.............................................. 43
A. Refrigeration Circuit Service Information .................................................................... 43
B. Component Service Information.................................................................................. 46
V. Maintenance .................................................................................................................... 55
VI. Disposal.......................................................................................................................... 57

4
VII. Technical Information..................................................................................................... 58
A. Specication and Performance Data........................................................................... 58
1. FS-1001MLH-C with SRC-10H............................................................................... 58
2. FS-1022MLH-C with SRC-10H .............................................................................. 59
3. FS-1500MLH-C with SRC-14H.............................................................................. 60
4. SRC-10H and SRC-14H ........................................................................................ 61
B. Wiring Diagram............................................................................................................ 62
1. Icemaker ................................................................................................................ 62
2. Condensing Unit.................................................................................................... 63

5
Important Safety Information
Throughout this manual, notices appear to bring your attention to situations which could
result in death, serious injury, damage to the appliance, or damage to property.
WARNING Indicates a hazardous situation which could result in death or
serious injury.
NOTICE Indicates a situation which could result in damage to the
appliance or property.
IMPORTANT Indicates important information about the use and care of the
appliance.
WARNING
The appliance should be destined only to the use for which it has been expressly
conceived. Any other use should be considered improper and therefore dangerous.
The manufacturer cannot be held responsible for injury or damage resulting from
improper, incorrect, and unreasonable use. Failure to service and maintain the
appliance in accordance with this manual will adversely affect safety, performance,
component life, and warranty coverage and may result in costly water damage.
To reduce the risk of death, electric shock, serious injury, or re, follow basic
precautions including the following:
• Only qualied service technicians should install and service the appliance.
• The appliance must be installed in accordance with applicable national, state, and
local codes and regulations. Failure to meet these code requirements could result in
death, electric shock, serious injury, re, or damage to the appliance.
• The appliance must be installed in accordance with applicable national, state, and
local codes and regulations.
• To reduce the risk of electric shock, do not touch the icemaker power switch or plug
with damp hands. Make sure the icemaker power switch is in the "OFF" position
before plugging in or unplugging the icemaker.
• Before Servicing: FS: Move the icemaker's power switch to the "OFF" position.
Unplug the icemaker from the electrical outlet. SRC: Turn off the power supply
to the remote condensing unit. Place the disconnect (if applicable) in the off
position. Lockout/Tagout to prevent the power supply from being turned back on
inadvertently.
• Do not make any alterations to the icemaker or condensing unit. Alterations could
result in electric shock, injury, re, or damage to the appliance.

6
WARNING, continued
FS
• The icemaker requires an independent power supply of proper capacity. See the
nameplate for electrical specications. Failure to use an independent power supply
of proper capacity can result in a tripped breaker, blown fuse, damage to existing
wiring, or component failure. This could lead to heat generation or re.
• THE ICEMAKER MUST BE GROUNDED. The icemaker is equipped with a
NEMA5-15 three-prong grounding plug to reduce the risk of potential shock
hazards. It must be plugged into a properly grounded, independent 3-prong wall
outlet. If the outlet is a 2-prong outlet, it is your personal responsibility to have
a qualied electrician replace it with a properly grounded, independent 3-prong
wall outlet. Do not remove the ground prong from the power cord and do not use
an adapter plug. Failure to properly ground the icemaker could result in death or
serious injury.
• Do not use an extension cord.
• Do not use an icemaker with a damaged power cord. The power cord should not be
altered, jerked, bundled, weighed down, pinched, or tangled. Such actions could
result in electric shock or re. To unplug the icemaker, be sure to pull the plug, not
the cord, and do not jerk the cord.
• Do not place ngers or any other objects into the ice discharge opening.
SRC
• The remote condensing unit requires an independent power supply of proper
capacity. See the nameplate for electrical specications. Failure to use an
independent power supply of proper capacity can result in a tripped breaker, blown
fuse, damage to existing wiring, or component failure. This could lead to heat
generation or re.
• Electrical connection must be hard-wired to the remote condensing unit and must
meet national, state, and local electrical code requirements. Failure to meet these
code requirements could result in death, electric shock, serious injury, re, or
damage.
• THE REMOTE CONDENSER UNIT MUST BE GROUNDED. The power supply and
ground connection to the remote condenser unit are supplied from the icemaker.
Failure to properly ground the remote condenser unit could result in death or
serious injury.
• Wire routing (conduit) and disconnect (if required) must meet national, state, and
local electrical code requirements. Failure to meet these code requirements could
result in death, electric shock, serious injury, re, or damage.

7
NOTICE
• Follow the instructions in this manual carefully to reduce the risk of costly water
damage.
• In areas where water damage is a concern, install in a contained area with a oor
drain.
• Install the appliance in a location that stays above freezing. Normal operating
ambient temperature must be within 45°F to 100°F (7°C to 38°C).
• Do not leave the icemaker on during extended periods of non-use, extended
absences, or in sub-freezing temperatures. To properly prepare the icemaker for
these occasions, follow the instructions provided in the instruction manual.
• Do not place objects on top of the appliance.
• The dispenser unit/ice storage bin is for ice use only. Do not store anything else in
the dispenser unit/ice storage bin.

8
I. Construction and Water/Refrigeration Circuit Diagram
A. Construction
1. Icemaker
Inlet Water Valve
Reservoir
Control Box
BC2 (mechanical backup)
Spout
Float Switch
Gear Motor
Thermostatic
Expansion Valve
Ice Chute
BC1 (infrared sensor)
Cutter, Extruding Head, Evaporator Power Cord
Drain Valve
High-Side
Service Valve
Low-Side
Service Valve
Strainer
Front Panel Right Side
Panel
Top Panel
Drier
Evaporator
Heater
Model Shown: FS-1500MLH-C

9
2. Condensing Unit
a) SRC-10H
Condenser
Receiver
Fan Motors
Headmaster (C.P.R.)
High-Side
Service Valve
Compressor High-Pressure Switch
Control Low-Pressure Switch
Control Box
Safety Low-Pressure Switch
b) SRC-14H
Right Side Panel
Louver Panel
Left Side Panel
Top Panel
Low-Side
Service Valve
Control Box Cover
Top Panel
Condenser
Headmaster (C.P.R.)
Fan Motor Compressor
High-Pressure Switch
Control Box
Right Side Panel
Control Box Cover
Receiver
Left Side Panel
Control Low-Pressure
Switch
Safety Low-Pressure
Switch Louver Panel
High-Side
Service Valve
Low-Side
Service Valve

10
Cutter
Extruding Head and
Upper Bearing
Auger
Mechanical Seal
O-Ring
Housing and
Lower Bearing
Spline Coupling
Gear Motor
Hex Bolt and Washer
Evaporator
Seal Bolts and Washers
Socket Head Cap Screw
and Split Lock Washer
Socket Head Cap Screw
and Split Lock Washer
Evaporator Heater
Evaporator Flange
3. Icemaking Unit