R Model
Flake & Nugget Ice Machine
Technician’s Handbook
Part Number 000007661 11/16
Safety Notices
As you work on Manitowoc equipment, be sure to pay
close attention to the safety notices in this handbook.
Disregarding the notices may lead to serious injury and/
or damage to the equipment.
Throughout this handbook, you will see the following
types of safety notices:
Warning
n
Text in a Warning box alerts you to a potential
personal injury situation. Be sure to read the Warning
statement before proceeding, and work carefully.
Caution
,
Text in a Caution box alerts you to a situation in which
you could damage the equipment. Be sure to read
the Caution statement before proceeding, and work
carefully.
Procedural Notices
As you work on Manitowoc equipment, be sure to read
the procedural notices in this handbook. These notices
supply helpful information which may assist you as you
work.
Throughout this handbook, you will see the following
types of procedural notices:
Important
Text in an Important box provides you with
information that may help you perform a procedure
more efficiently. Disregarding this information will
not cause damage or injury, but it may slow you
down as you work.
NOTE: Text set off as a Note provides you with simple, but
useful, extra information about the procedure you are
performing.
Read These Before Proceeding:
Caution
,
Proper installation, care and maintenance are
essential for maximum performance and trouble-free
operation of your equipment. Visit our website www.
manitowocfsg.com for manual updates, translations,
or contact information for service agents in your area.
Important
Routine adjustments and maintenance procedures
outlined in this handbook are not covered by the
warranty.
Warning
n
Read this manual thoroughly before operating,
installing or performing maintenance on the
equipment. Failure to follow instructions in this
manual can cause property damage, injury or death.
Warning
n
Do not use electrical appliances or accessories other
than those supplied by Manitowoc for your ice
machine model.
Warning
n
Two or more people or a lifting device are required to
lift this appliance.
Warning
n
This equipment contains high voltage electricity and
refrigerant charge. Installation and repairs are to be
performed by properly trained technicians aware of
the dangers of dealing with high voltage electricity
and refrigerant under pressure.The technician must
also be certified in proper refrigerant handling
and servicing procedures. All lockout and tag out
procedures must be followed when working on this
equipment.
Warning
n
Do not damage the refrigeration circuit when
installing, maintaining or servicing the unit.
Warning
n
Do not operate equipment that has been misused,
abused, neglected, damaged, or altered/modified
from that of original manufactured specifications.
This appliance is not intended for use by persons
(including children) with reduced physical, sensory
or mental capabilities, or lack of experience and
knowledge, unless they have been given supervision
concerning use of the appliance by a person
responsible for their safety. Do not allow children to
play with this appliance.
Warning
n
All covers and access panels must be in place and
properly secured, before operating this equipment.
Warning
n
Do not obstruct machine vents or openings.
Warning
n
Do not store gasoline or other flammable vapors or
liquids in the vicinity of this or any other appliance.
Warning
n
Do not clean with water jet.
Warning
n
It is the responsibility of the equipment owner to
perform a Personal Protective Equipment Hazard
Assessment to ensure adequate protection during
maintenance procedures.
Warning
n
Two or more people are required to move this
equipment to prevent tipping.
Warning
n
When using electric appliances, basic precautions
must always be followed, including the following:
a. Read all the instructions before using the
appliance.
b. To reduce the risk of injury, close supervision
is necessary when an appliance is used near
children.
c. Do not contact moving parts.
d. Only use attachments recommended or sold
by the manufacturer.
e. Do not use outdoors.
f. For a cord-connected appliance, the
following must be included:
• Do not unplug by pulling on cord. To
unplug, grasp the plug, not the cord.
• Unplug from outlet when not in use and
before servicing or cleaning.
• Do not operate any appliance with
a damaged cord or plug, or after the
appliance malfunctions or is dropped
or damaged in any manner. Contact
the nearest authorized service facility
for examination, repair, or electrical or
mechanical adjustment.
g. Follow applicable lock out tag out procedures
before working on equipment.
h. Connect to a properly grounded outlet only.
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Table of Contents
Safety Notices ....................................2
Procedural Notices ...............................2
General Information
Model Numbers ................................ 15
Self Contained................................ 15
Air & Water-Cooled Models ................... 15
Nugget Models............................... 16
QuietQube Models with Remote Condensing
Units .........................................16
Rack Units.................................... 17
Model/Serial Number........................... 17
Manitowoc Cleaner and Sanitizer ..............17
Ice Machine Warranty Information ............. 17
Ice Machine Heat of Rejection . . . . . . . . . . . . . . . . . . 18
Installation
Installation Requirements...................... 21
Potable Water Requirements . . . . . . . . . . . . . . . . . . . 22
Drain Connections.............................. 22
Ice Machine Clearance Requirements ..........23
Cooling Tower Applications .................... 24
Electrical Service ............................... 25
Voltage ......................................25
Fuse/Circuit Breaker ..........................25
Ground Fault Interrupter Circuit (GFIC) ........ 25
Maintenance
Cleaning and Sanitizing ........................ 27
Exterior Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
RF/RFS/RNS Models Cleaning/Sanitizing
Procedures ...................................27
Parts removal for Cleaning/Sanitizing .........32
Ice Chute Removal - RFS & RNS Models ........33
Ice Chute Removal - RF Models................ 34
Ice Chute Switch Actuator Removal ...........35
Cleaning sanitizing Procedure RN0400 ........36
Cleaning the Air filter and Condenser .........39
Removal from Service/Winterization........... 40
Part Number 000007661 11/16 9
Sequence of Operation
Ice Making Sequence of Operation .............41
RF0244/RNS0244/RF0266/RF0385/RFS0385/
RNS0385/RF0388/RF0399 ..................... 41
RF0300....................................... 42
RFS0300/RNS0308 ............................ 43
RF0644/RF0650/RF1200/RFS1200/RF2300/
RFS2300...................................... 44
RF1200C/RF2300C............................ 45
RF1200C/RF2300C............................ 46
RN0400 ...................................... 47
RN1000/RN1400.............................. 54
RN1000C/RN1200C ...........................57
Thermostat Settings............................ 61
Troubleshooting
RF0244/ RNS0244/RF0266/RF0385/RFS0385/
RF0388/RF0399/RNS0385 Troubleshooting ....63
Self-Contained Air-Cooled .................... 63
RF0300 Troubleshooting .......................69
Self-Contained Air-Cooled .................... 69
RFS0300/RNS0300 Troubleshooting ...........75
Self-Contained Air-Cooled .................... 75
RF0644/RF0650/RNS0600/RNS1000/RF1200
RFS1200 Troubleshooting ......................81
Self-Contained Air-Cooled .................... 81
Rotation Sensor Operation.................... 81
RNS1000/RF1200C/RFS1200C Troubleshooting 87
QuietQube Remote Air-cooled Models with
Remote Condensing Unit ..................... 87
RF1200R/RFS1200R Troubleshooting ..........94
Head Section For Rack Refrigeration Systems ..94
Rotation Sensor Operation.................... 94
10 Part Number 000007661 11/16
RF2300/RFS2300 Troubleshooting ............101
Self-Contained Air-Cooled ...................101
Rotation Sensor Operation...................101
RF2300C/RFS2300C Troubleshooting .........108
QuietQube Remote Air-cooled Models with
Remote Condensing Unit ....................108
RF2300R/RFS2300R Troubleshooting .........116
Head Section For Rack Refrigeration systems . 116
Rotation Sensor Operation...................116
RN0400 Troubleshooting......................124
Over-Torque Failure..........................124
Water Loss Failure ...........................127
RN1000/RN1400 Troubleshooting.............133
Indicator Light Operation ....................133
Control Board Errors .........................137
RN1000C/RN1200C Troubleshooting..........147
Indicator Light Operation ....................147
Control Board Errors .........................151
Refrigeration Troubleshooting ................163
Capillary Tube Models .......................163
Thermostatic Expansion Valve Models ........164
Component Specifications
Bin Thermostat ..............................165
Low Temperature Thermostat
Evaporator safety thermostat)................165
High Pressure Cutout (HPCO) Control.........166
Rotation Sensor .............................167
Low Pressure Cutout (LPCO) Control..........167
Fan Cycle Control ............................168
Total System Refrigerant Charge .............169
Filter-Driers..................................171
Suction Cleanup Filter-Drier..................171
Part Number 000007661 11/16 11
Charts
Total System Refrigerant Charge ..............173
Ice Production & Refrigerant Pressure.........173
RF Flake Models ...............................174
RF0244A ....................................174
RF0266A ....................................175
RF0300A ....................................176
RF0385A ....................................177
RF0388A ....................................178
RF0399A ....................................179
RF0644A ....................................180
RF0650A ....................................181
RF0650W....................................182
RF1200A ....................................183
RF1200W....................................184
RF1278C With RCU1075......................185
RF2300A ....................................186
RF2300W....................................187
RF2378C with RCU2375......................188
RFS Flake Models ..............................189
RFS0244A ...................................189
RFS0300A ...................................190
RFS0650A ...................................191
RFS0650W...................................192
RFS1200A ...................................193
RFS1200W...................................194
RFS1278C With RCU1075 ....................195
RFS2300A ...................................196
RFS2300W...................................197
RFS2378C with RCU2375.....................198
RN Nugget Models ............................199
RN0408A ....................................199
RN1008A ....................................200
RN1009W ...................................201
RN1408A ....................................202
RN1409W ...................................203
RN1078C With RCU1075 .....................204
RN1278C With RCU1275 .....................205
12 Part Number 000007661 11/16
RNS Nugget Models ...........................206
RNS0244A...................................206
RNS0308A...................................207
RNS0385A...................................208
RNS0608A...................................209
RNS0609W ..................................210
RNS1000A...................................211
RNS1009W ..................................212
RNS1078C With RCU1098 ....................213
Rack Models ...................................214
RF1279R ....................................214
RFS1279R ...................................215
RF2379R ....................................216
RFS2379R ...................................217
Diagrams
Wiring Diagrams...............................219
Flake Models ..................................220
RF0244/RF0266/RF0385/RF0388/RF0399 Air-
Cooled ......................................220
RF0300 Air-Cooled...........................222
RFS0300 Air-Cooled .........................224
RF0650/RF1200 Air-Cooled ..................226
RFS1200A Air-Cooled ........................228
RF1200 Water-Cooled........................230
RFS1200W Water-Cooled ....................232
RF1200C/RFS1200C QuietQube Head Section 234
RF2300/RFS2300 Air-Cooled & Water-cooled..236
RF2378C/RFS2378C QuietQube Head Section 238
Condensing Units .............................240
RCU Condensing Unit 1ph ...................240
RCU Condensing Unit 3ph ...................241
Part Number 000007661 11/16 13
Rack Models ...................................242
RF1279R/RFS1279R Head Section ............242
RF2379R/RFS2379R Head Section ............244
Nugget Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
RNS0244/RNS0385 Air-Cooled ...............246
RNS0308 Air-Cooled . . . . . . . . . . . . . . . . . . . . . . . . . 248
RN0400 115v/60hz/1ph......................250
RN0400 230v/60hz/1ph......................251
RNS0600A Air-Cooled........................252
RNS0600W Water-Cooled ....................254
RNS1000 Air-Cooled . . . . . . . . . . . . . . . . . . . . . . . . . 256
RNS1009 Water-cooled ......................258
RNS1078C...................................260
RN1000/RN1400 Air & Water Cooled..........262
RN1000C/RN1200C QuietQube Head Section. 263
Refrigeration Tubing Schematics ..............264
Flake Models ..................................264
RF0244/RFS0244/RF0266/RF0300/RF0385/
RF0388/RF0399/RF0644/RF0650 .............264
RF1200/RFS1200 Air-cooled..................265
RF1200/RFS1200 Water-cooled...............266
RF2300/RFS2300 Air-cooled..................268
RF2300/RFS2300 Water-cooled...............270
RF1200C/RFS1200C QuietQube Head Section &
RCU1075 Condensing Unit...................272
RF2300C/RFS2300 QuietQube Head Section &
RCU2375 Condensing Unit...................274
Nugget Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
RN0244/RNS0244/RN0385/RNS0385 .........276
RNS0308 ....................................277
RN0400/RN1000/RN1400 Air & Water-cooled . 278
RN1000C/RN1200C QuietQube Head Section &
RCU1075/RCU1275 Condensing Unit.........280
14 Part Number 000007661 11/16
General Information
Model Numbers
SELF CONTAINED
AIR & WATERCOOLED MODELS
Flake Models
Self Storage
Air-Cooled
RF0244A – – –
RF0266A – – –
RF0385A – – –
RF0388A – – –
RF0399A – – –
– – RF0300A –
– – RFS0300A –
RF0644A – –
– – RF0650A RF0650W
– – RFS0650A RFS0650W
– – RF1200A RF1200W
– – RFS1200A RFS1200W
– – RF2300A RF2300W
Self Storage
Water-
Cooled
Modular Air-
Cooled
Modular
Water-
Cooled
Part Number 000007661 11/16 15
NUGGET MODELS
Self Storage
Air-Cooled
RNS0244A – – –
-- – RNS0308A –
RNS0385A – – –
RN0408A – – –
– – RNS1008A –
– – RN1008A RN1009W
– – RN1408A RN1409W
Self Storage
Water-
Cooled
Modular Air-
Cooled
Modular
Water-
Cooled
QUIETQUBE MODELS WITH REMOTE CONDENSING UNITS
Flake Models
QuietQube Head RCU Remote Condensing
Unit
RF1278C RCU1075
RFS1278C RCU1075
RF2378C RCU2375
RFS2378C RCU2375
Nugget Models
QuietQube Head RCU Remote Condensing
Unit
RN1078C RCU1075
RN1278C RCU1275
16 Part Number 000007661 11/16
RACK UNITS
Flake Models
Head Section Rack Remote Condensing
Unit
RF1279R Supplied by Others
RFS1279R Supplied by Others
RF2379R Supplied by Others
RFS2379R Supplied by Others
NOTE: Rack units share a common refrigeration circuit
with other equipment, such as display cases and glass
door freezer displays. Rack units have been modified to
function with rack systems and will not function correctly
with RCU condensing units.
Model/Serial Number
These numbers are required when requesting
information from your local Manitowoc Distributor, or
Manitowoc Ice. The model and serial number are listed
on the MODEL/SERIAL NUMBER DECAL affixed to the ice
machine.
Manitowoc Cleaner and Sanitizer
Manitowoc Ice Machine Cleaner and Sanitizer are
available in 16 oz. (473 ml) bottles. These are the only
cleaner and sanitizer approved for use with Manitowoc
products.
Cleaner Part Number Sanitizer Part Number
16 oz. 000000084 16 oz. 9405653
1 gal N/A 1 gal. 9405813
Ice Machine Warranty Information
Warranty information for all ice machine models is
available on our website at www.manitowocice.com.
Part Number 000007661 11/16 17
Ice Machine Heat of Rejection
Series Ice
Machine
RF Flake Models
RF0244A 2400 5000
RF0266A 2400 5000
RF0300A 2400 2400
RF0385A 3500 5200
RF0388A 3500 5200
RF0399A 3500 5200
RF0644A 7700 10250
RF0650A 5200 7700
RF0650W 5200 7700
RF1200A 7500 14000
RF1200W 7500 14000
RF1200C 7500 1400
RF2300A 15700 29500
RF2300W 15700 29500
RF2300C 15700 29500
RFS Flake Models
RFS0300A 2400 5000
RFS0650A 5200 7700
RFS0650W 5200 7700
RFS1200A 7500 14000
RFS1200W 7500 14000
RFS1200C 7500 14000
RFS2300C 15700 19500
Air Conditioning* Peak
Heat of Rejection
18 Part Number 000007661 11/16
Ice Machine Heat of Rejection
Series Ice
Machine
RN Nugget Models
RN0408A 3800 5400
RN1008A 11300 12800
RN1009W 11300 12800
RN1078C 11300 12800
RN1278C 7500 14000
RN1408A 16000 16400
RN1409W 16000 16400
RNS Nugget Models
RNS0244A 2400 5000
RNS0308A 3075 4100
RNS0385 3500 4600
RNS0608A 5200 7700
RNS0609W 5200 7700
RNS1008A 7500 10900
RNS1009W 7500 10900
RNS1078C 7500 14000
Air Conditioning* Peak
Heat of Rejection
*BTU/Hour
NOTE: Because the heat of rejection varies during the ice
making cycle, the figure shown is an average.
Part Number 000007661 11/16 19
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20 Part Number 000007661 11/16
Installation
Installation Requirements
The location selected for the ice machine must meet
the following criteria. If any of these criteria are not met,
select another location.
• Air temperature:
• RF or RFS Flake Models - Minimum 50°F (10°C),
Maximum 110°F (43°C)
• RN Nugget Models - Minimum 50°F (10°C), Maximum
100°F (38°C)
• RNS Nugget Models - Minimum 45°F (7°C), Maximum
110°F (43°C)
• The location must be free of airborne and other
contaminants.
• The location must not be near heat-generating
equipment or in direct sunlight.
• The location must be capable of supporting the
weight of the ice machine and a full bin of ice.
• The location must allow enough clearance for water,
drain and electrical connections in the rear of the ice
machine.
• The location must not obstruct airflow through or
around the ice machine.
• The ice machine and bin must be level.
• Routine adjustments and maintenance procedures
outlined in this manual are not covered by the
warranty.
Part Number 000007661 11/16 21
Potable Water Requirements
• Plumbing must conform to local codes.
• Water temperature: Minimum 40°F (4°C), Maximum
90°F (32°C).
• Do not connect the ice machine to a hot water
supply. Be sure all hot water restrictors installed for
other equipment are working. (Check valves on sink
faucets, dishwashers, etc.)
• If water pressure exceeds maximum pressure (70
psig [483 kPa] RN1000; 80 psig [552 kPa] for all other
models) obtain a water pressure regulator from your
Manitowoc distributor.
• A water shut-off valve is required to clean the ice
machine.
• A union for both the ice making and condenser water
lines is required.
• Water inlet lines require insulation to prevent
condensation.
• RF/RFS/RFN Models: A back flow preventer is required
on water inlet lines.
Drain Connections
• Drain lines must have a 1.5 inch drop per 5 feet of run
(2.5 cm per meter), and must not create traps.
• The floor drain must be large enough to
accommodate drainage from all drains.
• Bin drain termination must have an air gap.
• Separate insulated bin and water-cooled condenser
drain lines are required.
• The bin and ice machine drains require a vent.
22 Part Number 000007661 11/16
Ice Machine Clearance Requirements
Head
Sections
Back 5” (12.7 cm) 5” (12.7 cm) 5” (12.7 cm)
Sides/Top 8” (20.3 cm) 8” (20.3 cm) 8” (20.3 cm)
RCU Units Remote Condensing Unit*
Front/Back 24” (61.0 cm)
Sides/Top 6” (15.2 cm)*
SelfContained
Air-Cooled
Self-
Contained
Water-
Cooled*
QuietQube
Air-Cooled
NOTE: Allowance must be made for removal when the ice
machine is built-in. Monthly removal of the top panel is
required for cleaning and sanitizing.
Part Number 000007661 11/16 23
Cooling Tower Applications
A water cooling tower installation does not require
modification of the ice machine. The water regulator
valve for the condenser continues to control the
refrigeration discharge pressure.
It is necessary to know the amount of heat rejection, and
pressure drop through the condenser and water valves
(inlet and outlet) when using a cooling tower on an ice
machine.
• Water entering the condenser must not be lower than
37°F (3°C) or exceed 90°F (32°C).
• Water flow through the condenser must not exceed 5
gal. (19 L) per minute.
• Allow for a pressure drop of 7 psi (48 kPa) between
the condenser water inlet and the outlet of the ice
machine.
• Water exiting the condenser must not exceed 110°F
(43°C).
24 Part Number 000007661 11/16
Electrical Service
Warning
n
All wiring must conform to local, state and national
codes.
VOLTAGE
The maximum allowable voltage variation is ± 10% of the
rated voltage on the ice machine model/serial number
plate at compressor start-up.
FUSE/CIRCUIT BREAKER
A separate fuse/circuit breaker must be provided for each
ice machine. Circuit breakers must be H.A.C.R. rated (does
not apply in Canada).
Warning
n
The ice machine must be grounded in accordance with
national and local electrical codes.
GROUND FAULT INTERRUPTER CIRCUIT (GFIC)
A GFCI/GFI circuit protection is not recommended with
our equipment. If a GFCI/GFI is required by code a GFCI/
GFI breaker rather than outlet must be used to avoid
intermittent nuisance trips.
Part Number 000007661 11/16 25
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26 Part Number 000007661 11/16
Maintenance
Cleaning and Sanitizing
Maintenance procedures covered in this manual are not
covered by the warranty.
Caution
,
Use only Manitowoc approved Ice Machine Cleaner
(part number 000000084) and Sanitizer (part number
9405653). Do not mix Cleaner and Sanitizer solutions
together. It is a violation of Federal law to use these
solutions in a manner inconsistent with their labeling.
Read and understand all labels printed on bottles
before use.
Warning
n
Wear rubber gloves and safety goggles (and/or face
shield) when handling ice machine Cleaner or Sanitizer.
EXTERIOR CLEANING
Remove dust and dirt off exterior surfaces with mild
household dish-washing detergent and warm water.
Wipe dry with a clean, soft cloth.
RF/RFS/RNS MODELS CLEANING/SANITIZING PROCEDURES
Cleaning/Sanitizing Procedure
This procedure must be performed once every month.
• All ice must be removed from the bin
• The ice machine and bin must be disassembled
cleaned and sanitized
• The ice machine produces ice with the cleaner and
sanitizer solutions
• All ice produced during the cleaning and sanitizing
procedure must be discarded
Part Number 000007661 11/16 27
Procedure to Clean/Sanitize
Use Ice Machine Cleaner part number 000000084.
Use Ice Machine Sanitizer part number 9405653.
Step 1 Remove front and top covers and set the
toggle switch to the OFF position.
Step 2 Remove all ice from the bin.
Step 3 Turn off the ice making water supply and drain
water from evaporator and reservoir.
Step 4 Remove the top cover from water reservoir.
Step 5 Follow the chart and premix cleaner and water.
Amount of Water Amount of Cleaner
Part Number 000000084
1 gallon (4 Liters) 3 ounces (90 ml)
Step 6 Fill the evaporator and reservoir with cleaning
solution.
Prop Float Up to Prevent Low
Water Level Shutdown
28 Part Number 000007661 11/16
Step 7 Move the toggle switch to the ON position.
The ice machine will make ice with the cleaning solution
and deposit the ice in the bin. Add the remaining cleaner/
water solution as the water level in the reservoir drops.
NOTE: Do not allow the cleaner/water level to drop
below the minimum water level. The ice machine will
discontinue the cleaning cycle if the water float switch
opens.
Step 8 After all of the cleaner/water solution has been
added turn on the ice making water supply. Continue
the freeze cycle for 10 minutes to remove the cleaning
solution from the water circuit.
Step 9 Place the toggle switch in the OFF position.
Step 10 Refer to disassembly for cleaning/sanitizing
and remove parts for hand cleaning/sanitizing.
• Hand clean all parts
• Rinse all parts with clear potable water
• Sanitize all parts - do not rinse after sanitizing
• Spray all interior bin surfaces with sanitizer (do not
rinse sanitized areas).
• Spray evaporator discharge spout
Step 11 Reassemble ice machine.
Step 12 Turn off the ice making water supply.
Part Number 000007661 11/16 29
Step 13 Refer to chart and premix water and sanitizer.
Amount of Water Amount of Sanitizer
1 Gallons (4 L) Water 1/2 ounce (15 ml)
Step 14 Fill the evaporator and reservoir with sanitizer/
water solution.
Step 15 Move the toggle switch to the ON position.
The ice machine will make ice with the sanitizer/water
solution and deposit the ice in the bin. Add the remaining
sanitizer/water solution when the water level in the
reservoir drops.
NOTE: Do not allow the sanitizer/water level to drop
below the minimum water level. The ice machine will
discontinue the cleaning cycle if the water float switch
opens.
Step 16 After all of the sanitizer/water solution has
been added to the reservoir, turn on the ice making water
supply.
Step 17 Continue the freeze cycle for 30 minutes and
then discard all ice produced.
Heavily Scaled Cleaning Procedure
Perform this procedure if you have some or all of these
symptoms.
• Excessive grinding, popping or squealing noises from
the evaporator
• Grinding noise from gearbox
• Ice machine trips speed sensor
NOTE: A Cleaning/Sanitizing Procedure must be
performed after this procedure.
Procedure to Clean Heavily Scaled Flake Ice Machines
Step 1 Remove front and top covers and set the
toggle switch to the OFF position.
Step 2 Remove all ice from the bin.
30 Part Number 000007661 11/16
Step 3 Turn off the ice making water supply.
Step 4 Remove the top cover from water reservoir.
Step 5 Refer to chart and premix cleaner with
lukewarm water in a non-metallic container.
Model Water
Reservoir
Capacity
RF0244
RNS0244
RF0266
RNS0308
RF0385
RNS0385
RF0388
RF0399
RF0644
RF0300
RFS0300
RNS0308
RF0650
RFS0650
RF1200
RFS1200
RF2300
RFS2300
14 oz (400
ml)
17 oz (500
ml)
34 oz (1 L) 23 oz (680
68 oz (2 L) 46 oz (1.3 L) 22 oz (650
Mix Cleaner and Water
Use Ice machine nickel
safe cleaner, part number
000000084 only
Cleaner Water
9 oz (266 ml) 5 oz (148 ml)
11 oz (325
ml)
ml)
6 oz (177 ml)
11 oz (325
ml)
ml)
Step 6 Remove all water from the evaporator and
water reservoir. Add the entire cleaner/water solution and
re-install the reservoir cover.
Leave the cleaner/water solution in the evaporator for a
minimum of 4 hours.
Step 7 Remove all cleaner/water from the evaporator
and water reservoir.
Step 8 Follow the standard cleaning and sanitizing
procedures.
Part Number 000007661 11/16 31
PARTS REMOVAL FOR CLEANING/SANITIZING
Warning
n
Disconnect electric power to the ice machine at the
electric switch box and wear rubber gloves and safety
goggles (or face shield) while handling cleaner or
sanitizer.
NOTE: Do not mix Cleaner and Sanitizer solutions
together. It is a violation of Federal law to use these
solutions in a manner inconsistent with their labeling.
1. Turn off the water supply to the ice machine at the
water service valve.
2. Remove the components listed on the following
pages for cleaning and sanitizing.
3. Soak the removed part(s) in a properly mixed
solution of cleaner and water.
Solution Type Water Mixed With
Cleaner 1 gal. (4 L) 16 oz (500 ml) cleaner
Part Number 000000084
4. Use a soft-bristle brush or sponge (NOT a wire brush)
to carefully clean the parts.
5. Use the solution and a brush or sponge to clean all
disassembled components and the inside of the bin.
6. Rinse all cleaned parts with clear water.
7. Mix a solution of sanitizer and water.
Solution Type Water Mixed With
Sanitizer 3 gal. (11 L) 2 oz (60 ml) sanitizer
Part Number 94-0565-3
8. Soak the parts in the sanitizer/water solution for
10 minutes. Use the sanitizer/water solution and a
sponge to sanitize all removed components and the
inside of the bin. Do not rinse the sanitized parts.
9. Continue with step 11 of the cleaning/sanitizing
procedure.
32 Part Number 000007661 11/16
ICE CHUTE REMOVAL RFS & RNS MODELS
RFS0300/RNS0308/RFS1200/RFS2300
NOTE: A limited number of RF models have this type of
ice chute also.
1. Place the toggle switch in the OFF position, turn off
the water supply and disconnect electrical power to
the ice machine.
2. Disconnect water supply.
3. Remove water reservoir cover.
4. Remove microswitch and bin thermostat from the
ice chute.
5. Remove retainer, ice chute elbow and ice chute.
Part Number 000007661 11/16 33
ICE CHUTE REMOVAL RF MODELS
RF0300/RF0650/RF1200/RF2300
NOTE: A limited number of these models have the ice
chute listed on the previous page.
1. Place the toggle switch in the OFF position, turn off
the water supply and disconnect electrical power to
the ice machine.
2. Disconnect water supply.
3. Remove water reservoir cover.
4. Remove bin thermostat from ice chute.
5. Loosen bolts holding cross member.
6. Lift cross member and remove ice chute.
34 Part Number 000007661 11/16
LOOSEN SUPPORT
BOLTS
TIP TOP OF ICE
CHUTE BACK AND
LIFT TO REMOVE
ICE CHUTE SWITCH ACTUATOR REMOVAL
RFS0300/RF0650/RF1200/RFS1200/RF2300/RFS2300
1. Pull to remove nylon end cap.
2. Slide pin to remove.
3. Remove both sections of the pressure switch
bracket.
INCORRECT REASSEMBLY CAN
RESULT IN AN ICE MACHINE
THAT WILL NOT RUN
Part Number 000007661 11/16 35
CLEANING SANITIZING PROCEDURE RN0400
Use Ice Machine Cleaner part number 000000084.
Use Ice Machine Sanitizer part number 94-0565-3.
Step 1 Disconnect power, remove front, top and right
panels and set the compressor rocker switch to the OFF
position.
Step 2 Remove all ice from the bin/dispenser.
Step 3 Turn off the ice making water supply.
Step 4 Drain water from evaporator and reservoir
through the evaporator/reservoir drain line and reinsert
hose into hose clip.
Step 5 Follow the chart and premix cleaner and water.
Amount of Luke Warm
Water
1 gallon (4 Liters) 4 ounces (120 ml)
Amount of Cleaner
Part Number 000000084
Step 6 Remove top cover from the water reservoir and
fill the evaporator and reservoir with cleaning solution.
Remainder of solution will be used for hand cleaning.
Step 7 Verify the compressor rocker switch is in the
OFF position, then reconnect power and run the gear
motor for 15 minutes. Perform the following procedures
during the 15 minute period:
• Remove ice compression nozzle from evaporator and
soak in cleaning solution.
• Descale drain pan by gently flexing, then remove any
scale residue.
• Inspect water feed and drain lines and clean as
needed.
• Connect ice transport tube direct to evaporator and
secure with hose clamp.
36 Part Number 000007661 11/16
Step 8 Disconnect power, then drain the water from
the evaporator and reservoir through the evaporator/
reservoir drain line - Using a pitcher, fill and drain the
evaporator/reservoir 4 times and reinsert the hose into
the hose clip.
Step 9 Refer to chart and premix water and sanitizer.
Amount of Luke Warm
Water
1 Gallon (4 L) Water 1/2 ounce (15 ml)
Amount of Sanitizer
Step 10 Fill reservoir and evaporator with sanitizer/
water solution.
Step 11 Step 11 Verify the compressor rocker switch is
in the OFF position, then reconnect power and run the
gearmotor for 10 minutes.
• During the 10 minute period rinse cleaner from
compression nozzle with potable water and then
soak in sanitizer/water solution.
Step 12 Move the compressor rocker switch to the ON
position. The ice machine will make ice with the sanitizer/
water solution and deposit the ice in the bin/ dispenser.
Make ice for 5 minutes - add sanitizer/water solution as
the water level in the reservoir drops.
NOTE: Do not allow the sanitizer/water level to drop
below the sensing probes. The ice machine will start a 20
minute delay period if the sensing probes lose contact
with the water for more than 10 seconds.
Step 13 Move the compressor rocker switch to the OFF
position and disconnect power.
Step 14 Drain the evaporator/reservoir and reinsert the
drain hose into the hose clip.
Step 15 Reinstall the ice compression nozzle and
reservoir cover. Verify the ice tube is in place and does not
contact the condenser fan blade.
Part Number 000007661 11/16 37
Step 16 Turn on the ice making water supply,
reconnect power and move the compressor rocker switch
to ON.
Step 17 Allow the ice machine to run for 10 minutes,
then place the compressor rocker switch in the OFF
position, disconnect power and discard all ice produced.
Warning
n
To prevent injury disconnect main supply power
to the dispenser (when used) before cleaning or
sanitizing.
Step 18 Clean and sanitize the bin/dispenser:
• Disconnect power to the dispenser to prevent injury.
• Use the cleaner and sanitizer ratios from the charts on
Page 21.
• Heavy accumulations of scale may require removal of
components for cleaning and sanitizing.
• Rinse parts with clear water after cleaning - do not
rinse parts after sanitizing.
• Spray all interior bin/dispenser surfaces with sanitizer
(do not rinse sanitized areas).
Step 19 Place the compressor rocker switch in the ON
position, reinstall all removed panels and restore power
to the ice machine and dispenser.
38 Part Number 000007661 11/16
CLEANING THE AIR FILTER AND CONDENSER
Warning
n
Disconnect electric power to the ice machine at the
electric service switch before cleaning the condenser.
The condenser fins are sharp. Use care when cleaning
them.
Air-Cooled Condenser
Clean the condenser at least every six months. Follow the
steps below.
1. Some models have a washable filter. Clean the filter
with a mild soap and water solution.
2. Shine a flashlight through the condenser to check
for dirt between the fins. Blow compressed air
through the condenser fins from the inside or use
a commercial condenser coil cleaner. Follow the
directions and cautions supplied with the cleaner.
3. Straighten any bent condenser fins with a fin comb.
4. Carefully wipe off the fan blades and motor with
a soft cloth. Do not bend the fan blades. If the fan
blades are excessively dirty, wash with warm, soapy
water and rinse thoroughly.
Warning
n
If you are cleaning the condenser fan blades with water,
cover the fan motor to prevent water damage.
Part Number 000007661 11/16 39
Removal from Service/Winterization
Caution
,
If water is allowed to remain in the ice machine in
freezing temperatures, severe damage to some
components could result. Damage of this nature is not
covered by the warranty.
Follow the procedure below.
1. Disconnect the electric power at the circuit breaker
or the electric service switch.
2. Turn off the water supply.
3. Disconnect and drain the incoming ice-making
water line at the rear of the ice machine.
4. Disconnect drain tubing and drain water into
container and discard.
5. Make sure water is not trapped in any of the water or
drain lines.
6. Water cooled - Use compressed air to remove all
water from the condenser.
40 Part Number 000007661 11/16
Sequence of Operation
Ice Making Sequence of Operation
NOTE: Flake ice machines use an auger to remove ice
from the evaporator. Occasional noises (creaks, groans,
squeaks, or pops) are a normal part of the ice making
process.
RF0244/RNS0244/RF0266/RF0385/RFS0385/ RNS0385/RF0388/RF0399
Self-Contained Air-Cooled
When the toggle switch is placed in the “ON” position the
following controls must be in the closed position before
the ice machine will start:
A. Bin Thermostat
B. Low Evaporator Temperature Thermostat
C. Low Water Level Switch
Placing the toggle switch in the ON position starts the
gear motor and refrigeration system. The float valve
controls the water inlet valve and water level. The freeze
cycle ends when ice contacts the bin thermostat. The ice
machine will restart when ice no longer contacts the bin
thermostat.
Part Number 000007661 11/16 41
RF0300
Self-Contained Air-Cooled
When the toggle switch is placed in the “ON” position the
following controls must be in the closed position before
the ice machine will start:
A. Bin Thermostat
B. Ice Chute Safety Switch
C. Low Water Level Switch
D. Low Evaporator Temperature Thermostat
Placing the toggle switch in the ON position starts the
gear motor and a 10 minute compressor time delay. The
compressor starts and the float valve controls the water
inlet valve and water level. The freeze cycle ends when ice
contacts the bin thermostat. The ice machine remains off
until ice no longer contacts the bin thermostat.
42 Part Number 000007661 11/16
RFS0300/RNS0308
Self-Contained Air-Cooled
When the toggle switch is placed in the “ON” position the
following controls must be in the closed position before
the ice machine will start:
A. Bin Thermostat
B. Ice Chute Safety Switch
C. Low Water Level Switch
D. High Pressure Cut-out Switch
E. Low Pressure Cut-Out Switch
Placing the toggle switch in the ON position starts the
gear motor and a 10 minute compressor time delay. The
compressor starts and the float valve controls the water
inlet valve and water level. The freeze cycle ends when ice
contacts the bin thermostat. The ice machine remains off
until ice no longer contacts the bin thermostat.
Part Number 000007661 11/16 43
RF0644/RF0650/RF1200/RFS1200/RF2300/RFS2300
Self-Contained Air-Cooled
When the toggle switch is placed in the ON position the
following controls must be in the closed position before
the ice machine will start:
A. Bin Thermostat
B. High Pressure Cut-out Switch
C. Ice Chute Safety Switch
D. Low Pressure Switch
E. Low Water Level Switch
Placing the toggle switch in the ON position starts the
gear motor. After the rotation speed sensor verifies 10
minutes of correct rotation the time delay ends and
the compressor starts.The ice machine will continue to
make ice until ice contacts the bin thermostat. The ice
machine remains off until ice no longer contacts the bin
thermostat.
44 Part Number 000007661 11/16
RF1200C/RF2300C
QuietQube Remote Air-cooled Models with Remote
Condensing Unit
When the toggle switch is placed in the ON position the
following controls must be in the closed position before
the ice machine will start:
A. Bin Thermostat
B. High Pressure Cut-out Switch
C. Ice Chute Safety Switch
D. Low Pressure Switch
E. Low Water Level Switch
Placing the toggle switch in the ON position starts the
gear motor. After the rotation speed sensor verifies 10
minutes of correct rotation the time delay ends and the
liquid line solenoid valve opens.
• When the refrigerant pressure is high enough to close
the low-pressure control the contactor coil energizes
and the compressor starts.
• The refrigerant pressure will increase and close the
fan cycling pressure control and the condenser fan
motor starts.
The ice machine will continue to make ice until ice
contacts the bin thermostat and the liquid line solenoid
valve closes and the refrigeration system pumps down.
• The refrigerant pressure drops and the fan cycling
pressure control opens stopping the condenser fan
motor.
• When the refrigerant pressure is low enough to open
the low pressure control, the contactor coil is deenergized and the compressor stops.
The ice machine remains off until ice no longer contacts
the bin thermostat.
Part Number 000007661 11/16 45
RF1200C/RF2300C
Head Section with Rack Refrigeration system
When the toggle switch is placed in the ON position the
following controls must be in the closed position before
the ice machine will start:
A. Bin Thermostat
B. Ice Chute Safety Switch
C. Low Water Level Switch
Placing the toggle switch in the ON position starts the
gear motor. After the rotation speed sensor verifies 10
minutes of correct rotation the time delay ends and the
liquid line and suction solenoid valves energize.
The ice machine will continue to make ice until ice
contacts the bin thermostat and the liquid line and
suction solenoid valves close.
The ice machine remains off until ice no longer contacts
the bin thermostat.
46 Part Number 000007661 11/16
RN0400
Self-Contained Air-Cooled & Water-Cooled
NOTE: Ice machines use an auger to remove ice from the
evaporator. Occasional noises (creaks, groans, squeaks, or
pops) are a normal part of the ice making process.
Operation
The ice machine will not start until:
A. The compressor rocker switch is moved to “ON”.
B. Ice does not contact the bin thermostat bulb.
C. The water reservoir is full of water.
With power supplied and the compressor rocker switch in
the ON position, the gear motor and refrigeration system
start. The float valve controls the water inlet valve and
water level. The freeze cycle ends when ice contacts the
bin thermostat. A 20 minute delay period initiates. The ice
machine will restart when ice no longer contacts the bin
thermostat and the 20 minute delay period expires.
Part Number 000007661 11/16 47
Step 1 Initial Startup
INPU
POWER
With power supplied to the control board the PWR
(power) light is energized. The bin thermostat closes (BE
light on) and the water level probe checks for water.
RED
RED
PWR
WATER
SENSOR
RESET
GRD
B-E
B-T
WTR
2ND
60M
20M
C
DR
24V
NOMMOC
CAV ENIL
BOARD
CONTROL
DRIVE
FAN
COMPRESSOR
L2
L2
L2
L2
L2
L1
L1
WHITE
WHITE
RED
BLACK
1
BLACK
M
SWITCH
COMPRESSOR
RED
BLACK
WHITE
KC
ALB
BLACK
BLACK
L
S
BIN T-STAT
WHITE
EULB
RUN
START
GEARMOTOR
T.O.L.
BLACK
M
FAN
GRD
T
B
G
BLACK
W
R
COMPRESSOR
HIGH PRESSURE
ORANGE
BLACK
S
C
RED
T.O.L.
SAFETY SWITCH
BLACK
2
4
WHITE
WHITE
48 Part Number 000007661 11/16
YELLOW
3
Step 2 Gear Motor & Compressor Startup
W
INPU
POWER
The WTR light energizes and the gear motor, compressor
and fan motor start.Two additional lights energize DR
(drive) and C (compressor).
RED
RED
PWR
WATER
SENSOR
RESET
GRD
B-E
B-T
WTR
2ND
60M
20M
C
DR
24V
NOMMOC
CAV ENIL
BOARD
CONTROL
DRIVE
FAN
COMPRESSOR
L2
L2
L2
L2
L2
L1
L1
WHITE
WHITE
RED
BLACK
1
BLACK
M
SWITCH
COMPRESSOR
RED
BLACK
WHITE
KC
ALB
BLACK
BLACK
L
S
BIN T-STAT
WHITE
EULB
RUN
START
GEARMOTOR
T.O.L.
BLACK
M
FAN
GRD
T
B
G
BLACK
R
COMPRESSOR
HIGH PRESSURE
ORANGE
BLACK
S
C
RED
T.O.L.
Part Number 000007661 11/16 49
SAFETY SWITCH
BLACK
YELLOW
2
3
4
ITE
WH
WHITE
Step 3 When the current to the compressor and gear
W
INPU
POWER
motor drops, the current relays open. The PWR, DR, C,
WTR and BE lights remain energized throughout the
freeze cycle.
RED
RED
PWR
WATER
SENSOR
RESET
GRD
B-E
B-T
WTR
2ND
60M
20M
C
DR
24V
NOMMOC
CAV ENIL
BOARD
CONTROL
DRIVE
FAN
COMPRESSOR
L2
L2
L2
L2
L2
L1
L1
WHITE
WHITE
RED
BLACK
1
BLACK
M
SWITCH
COMPRESSOR
RED
BLACK
WHITE
KC
ALB
BLACK
BLACK
L
S
BIN T-STAT
WHITE
EULB
RUN
START
GEARMOTOR
T.O.L.
BLACK
M
FAN
GRD
T
B
G
BLACK
R
COMPRESSOR
HIGH PRESSURE
ORANGE
BLACK
S
C
RED
T.O.L.
SAFETY SWITCH
BLACK
2
4
ITE
WH
WHITE
50 Part Number 000007661 11/16
YELLOW
3
Step 4 The bin/dispenser fills and the bin thermostat
G
W
INPU
POWER
opens. The BE light de-energizes and 10 seconds later
the BT light energizes and the C light de-energizes. The
compressor and fan motor stop, although the gear motor
will run for an additional 60 seconds.
RED
RED
PWR
WATER
SENSOR
RESET
GRD
B-E
B-T
WTR
2ND
60M
20M
C
DR
24V
NOMMOC
CAV ENIL
BOARD
CONTROL
DRIVE
FAN
COMPRESSOR
L2
L2
L2
L2
L2
L1
L1
WHITE
WHITE
RED
BLACK
1
BLACK
M
SWITCH
COMPRESSOR
RED
BLACK
WHITE
KC
ALB
BLACK
BLACK
L
S
BIN T-STAT
WHITE
EULB
T.O.L.
RUN
START
GEARMOTOR
BLACK
M
FAN
GRD
T
B
BLACK
R
COMPRESSOR
HIGH PRESSURE
ORANGE
BLACK
S
C
RED
T.O.L.
Part Number 000007661 11/16 51
SAFETY SWITCH
BLACK
YELLOW
2
3
4
ITE
WH
WHITE
Step 5 The BT light is energized for 20 minutes to
GRD
L1
L1
L2
L2
L2
L2
L2
COMPRESSOR
FAN
DRIVE
DR
C
20M
60M
2ND
WTR
B-T
B-E
RESET
GRD
FAN
BLACK
WHITE
BLACK
BLACK
R
ORANGE
S
S
L
COMPRESSOR
C
RED
BLACK
BLACK
WATER
SENSOR
CONTROL
BOARD
KC
ALB
GEARMOTOR
24V
NOMMOC
CAV ENIL
RED
RED
WHITE
BIN T-STAT
WHITE
RED
WHITE
M
1
COMPRESSOR
SWITCH
PWR
BLACK
T.O.L.
BLACK
RED
HIGH PRESSURE
SAFETY SWITCH
4
2
3
RUN
START
T.O.L.
EULB
YELLOW
BLACK
WH
ITE
M
BLACK
indicate the machine is in the 20 minute time delay
period. Pressing the control board reset button cancels
the time delay.
52 Part Number 000007661 11/16
Step 6 After 20 minutes the BT light de-energizes.
COMPRESSOR
The PWR and WTR lights remain energized. When the bin
thermostat closes the ice machine starts at step 1.
RED
RED
PWR
WATER
SENSOR
RESET
GRD
BLACK
WHITE
ALB
BLACK
SWITCH
COMPRESSOR
KC
RED
B-E
B-T
WTR
2ND
60M
20M
C
DR
24V
NOMMOC
CAV ENIL
BOARD
CONTROL
DRIVE
FAN
COMPRESSOR
L2
L2
L2
L2
L2
L1
L1
WHITE
WHITE
RED
BLACK
BLACK
1
L
BLACK
S
M
BIN T-STAT
WHITE
EULB
RUN
START
GEARMOTOR
T.O.L.
BLACK
BLACK
M
FAN
GRD
T
BLACK
ORANGE
R
C
SAFETY SWITCH
HIGH PRESSURE
BLACK
S
RED
T.O.L.
YELLOW
2
3
4
ITE
WH
ITE
Part Number 000007661 11/16 53
RN1000/RN1400
Self-Contained Air-Cooled & Water-Cooled
NOTE: Ice machines use an auger to remove ice from the
evaporator. Occasional noises (creaks, groans, squeaks, or
pops) are a normal part of the ice making process.
Operation
The ice machine will not start until:
A. The rocker switch is moved to ON.
B. The transport tube shuttle switch is closed.
C. The water reservoir is full of water.
Placing the toggle switch in the ON position starts the
gear motor and refrigeration system. The water level
sensor controls the water inlet valve and water level. The
freeze cycle ends when ice contact opens the transport
tube switch. A 60 minute time delay period initiates.
The ice machine will restart when the ice transport
tube switch closes and the 60 minute time delay period
expires.
Flush Cycle
The ice machine will automatically flush the evaporator.
The refrigeration system will shut down and the gear
motor will continue to run. After the flush is complete,
the machine will refill and start the refrigeration system
without a time delay.
54 Part Number 000007661 11/16
RN1000/RN1400 Indicator lights
ON OFF ON or OFF FLASHING
PURGE (Y)
WER (G)
W BIN (G)
GER ON (G)
REFRIG ON (G)
CLEANING (Y)
AMPS (R)
HI PRESS (R)
PRESS (R)
DRAIN CL
TIME DELA
CPU (G)
INDICATOR LIGHT LEGEND
• With line voltage supplied the green Power light is on
and the CPU light flashing a heartbeat indicates the
central processing unit is working.
• Yellow lights indicate normal off conditions.
• Red lights indicate an alarm condition.
The sequence below is for normally operating machines.
For alarm conditions refer to troubleshooting which starts
on page 133.
Step 1 Freeze cycle normal light operation
The CPU light flashes and the Refrigeration, Auger on,
Low bin and Power lights are on.
OG (R)
HI WATER (R)
LO
LO WATER (R)
Part Number 000007661 11/16 55
SERVICE (R)
HI
Y (Y)
AU
LO
PO
Step 2 Time delay cycle normal light operation
PURGE (Y)
WER (G)
W BIN (G)
GER ON (G)
REFRIG ON (G)
CLEANING (Y)
AMPS (R)
HI PRESS (R)
PRESS (R)
DRAIN CL
TIME DELA
CPU (G)
PURGE (Y)
WER (G)
W BIN (G)
GER ON (G)
REFRIG ON (G)
CLEANING (Y)
AMPS (R)
HI PRESS (R)
PRESS (R)
DRAIN CL
TIME DELA
CPU (G)
The bin fills with ice, the Low Bin light de-energizes and
the Time delay light energizes. The compressor and
gear motor immediately turn off and the condenser fan
continues to run for 10 minutes before turning off. When
the time delay ends and the Low bin light energizes the
ice machine will restart.
OG (R)
HI WATER (R)
LO
LO WATER (R)
Step 3 Purge cycle normal light operation
After 1 to 2 hours of ice making the control board will
initiate a purge cycle. The compressor de-energizes and
the gear motor and condenser fan motor continue to run.
After the purge cycle is complete the ice machine starts
without a time delay period.
HI
SERVICE (R)
OG (R)
LO WATER (R)
HI WATER (R)
LO
HI
SERVICE (R)
Y (Y)
Y (Y)
AU
AU
LO
LO
PO
PO
56 Part Number 000007661 11/16
RN1000C/RN1200C
QuietQube Remote Air-cooled Model with Remote
Condensing Unit
NOTE: Ice machines use an auger to remove ice from the
evaporator. Occasional noises (creaks, groans, squeaks, or
pops) are a normal part of the ice making process.
Operation
The ice machine will not start until:
A. The rocker switch is moved to ON.
B. The transport tube switch is closed.
C. The water reservoir is full of water.
Placing the toggle switch in the ON position starts
the gear motor and energizes the liquid line solenoid
valve. The refrigerant pressure at the condensing unit
increases and the low pressure switch closes and starts
the refrigeration system. The water level sensor controls
the water inlet valve and water level. The freeze cycle
ends when ice contact opens the transport tube switch.
The liquid line solenoid valve closes and the refrigerant
pressure at the condensing unit drops. The low pressure
switch opens and turns off the refrigeration system. A 60
minute time delay period initiates. The ice machine will
restart when the ice transport tube switch closes and the
60 minute time delay period expires.
Part Number 000007661 11/16 57
RN1000/RN1400 Indicator lights
ON OFF ON or OFF FLASHING
PURGE (Y)
WER (G)
W BIN (G)
GER ON (G)
REFRIG ON (G)
CLEANING (Y)
AMPS (R)
HI PRESS (R)
PRESS (R)
DRAIN CL
TIME DELA
CPU (G)
INDICATOR LIGHT LEGEND
• With line voltage supplied the green Power light is on
and the CPU light flashing a heartbeat indicates the
central processing unit is working.
• Yellow lights indicate normal off conditions.
• Red lights indicate an alarm condition.
The sequence below is for normally operating machines.
For alarm conditions refer to troubleshooting which starts
on page 133.
Step 1 Freeze cycle normal light operation
The CPU light flashes and the Refrigeration, Auger on,
Low bin and Power lights are on.
OG (R)
LO WATER (R)
58 Part Number 000007661 11/16
LO
HI WATER (R)
SERVICE (R)
HI
Y (Y)
AU
LO
PO
Step 2 Time delay cycle normal light operation
PURGE (Y)
WER (G)
W BIN (G)
GER ON (G)
REFRIG ON (G)
CLEANING (Y)
AMPS (R)
HI PRESS (R)
PRESS (R)
DRAIN CL
TIME DELA
CPU (G)
PURGE (Y)
WER (G)
W BIN (G)
GER ON (G)
REFRIG ON (G)
CLEANING (Y)
AMPS (R)
HI PRESS (R)
PRESS (R)
DRAIN CL
TIME DELA
CPU (G)
The bin fills with ice, the Low Bin light de-energizes and
the Time delay light energizes. The compressor and
gear motor immediately turn off and the condenser fan
continues to run for 10 minutes before turning off. When
the time delay ends and the Low bin light energizes the
ice machine will restart.
OG (R)
HI WATER (R)
LO
LO WATER (R)
Step 3 Purge cycle normal light operation
After 1 to 2 hours of ice making the control board will
initiate a purge cycle. The compressor de-energizes and
the gear motor and condenser fan motor continue to run.
After the purge cycle is complete the ice machine starts
without a time delay period.
HI
SERVICE (R)
OG (R)
LO WATER (R)
HI WATER (R)
LO
HI
SERVICE (R)
Y (Y)
Y (Y)
AU
AU
LO
LO
PO
PO
Part Number 000007661 11/16 59
Ice Production/Quality Check
QUALITY CHECK
Ice quality varies with ambient and water temperatures,
and is measured by the amount of water in the ice.
Generally speaking, higher incoming water temperature
results in lower ice quality. Lower water temperature
results in higher ice quality.
ICE PRODUCTION CHECK
NOTE: Ice production checks that are within 10% of the
charted capacity are considered normal due to variances
in air and water temperatures. Actual temperatures will
seldom match the chart exactly.
1. Run the ice machine a minimum of 10 minutes to
allow the system to stabilize.
2. Catch the ice in a non-perforated container for 7
minutes and 12 seconds or for more accuracy 14
minutes and 24 seconds.
3. Weigh the container and ice, then deduct the weight
of the container.
4. Convert ounces to pounds.
5. Example: 3 lbs. 12 oz. converts to 3.75 lbs.
6. (12 oz. ÷ 16 oz. =.75 lb.)
7. Determine the 24-hour ice production capacity.
A. 7 minutes 12 seconds = Multiply the total ice
weight by 200.
B. 14 minutes 24 seconds = Multiply the total ice
weight by 100.
60 Part Number 000007661 11/16
Thermostat Settings
Bin Thermostat:
The bin thermostat sensing bulb is located in the ice
chute on modular models and in the bin thermostat
holder on the right side of the bin on self storage models.
The bin thermostat turns the ice machine on and off as
the level of ice in the bin changes. Use the indicator on
the ice machine label as the initial setting and adjust as
required.
Evaporator Low Temperature Safety Thermostat:
The evaporator low temperature safety thermostat
protects the ice machine if the evaporator temperature is
too cold. Refer to chart for correct setting.
4
3
5
2
1
3
2
6
Start at Chart Setting, then adjust
7
4
5
6
7
1
Bin Thermostat
Small Numbers = Less ice in bin
Large Numbers = More ice in bin
as required
Evaporator Low Temperature
Safety Thermostat
Refer to chart for setting
Incorrect settings will cause ice
machine to shut off prematurely
Part Number 000007661 11/16 61
Thermostat Setting Chart
NOTE: Settings are for reference only. Factory setting
is indicated on control label and overrides information
listed on this page.
Model Bin Thermostat
Setting
RF0244 5 5
RFS0244 5 6
RNS0244 5 5
RF0266 5 5
RF0300 4 7
RFS0300 3 N/A
RNS0308 3 6
RF0385 5 7
RNS0385 5 7
RF0388 5 7
RF0399 5 7
RF0644 5 N/A
RF0650 3 N/A
RFS0650 3 N/A
RF1200 4 N/A
RFS1200 3 N/A
RF2300 3 N/A
RFS2300 3 N/A
Evaporator
Thermostat
Setting
62 Part Number 000007661 11/16
Troubleshooting
Diagnostic troubleshooting for the ice machine involves
following flowcharts that are dependent on symptoms of
the failed machine.
Follow the flowcharts for the failure symptom and model
you are working on.
NOTE: Refer to the sequence of operation to determine
where in the sequence the ice machine has failed. An
example would be an ice machine that energizes the gear
motor, but the compressor does not energize. Following
the electrical flowchart will quickly and easily eliminate
non issues.
RF0244/ RNS0244/RF0266/RF0385/ RFS0385/RF0388/RF0399/RNS0385 Troubleshooting
SELF-CONTAINED AIR-COOLED
Normal Operation
When the toggle switch is placed in the “ON” position the
following controls must be in the closed position before
the ice machine will start:
A. Bin Thermostat
B. Low Evaporator Temperature Thermostat
C. Low Water Level Switch
NOTE: Placing the toggle switch in the ON position starts
the gear motor and refrigeration system. The float valve
controls the water inlet valve and water level. The freeze
cycle ends when ice contacts the bin thermostat. The ice
machine will restart when ice no longer contacts the bin
thermostat.
Part Number 000007661 11/16 63
Plug In Ice Machine, Reset BreakerNO
Electrical Flowchart -
RF0244/RNS0244/RF0266/RF0385/RFS0385/RNS0385
RF0388/RF0399 AIR & WATER
Move Switch To ON Position
NO
Replace Switch
NO
YES
Machine?
Power Supplied to Ice
Toggle Switch In ON
64 Part Number 000007661 11/16
Position?
YES
YES
Switch Illuminated?
Bin Thermostat
Replace Thermostat
Evaporator Safety
Thermostat Closed?
Replace Thermostat
No
Yes
Thermostat?
Adjusting Closes
No No
Thermostat?
Ice Contacting
NO
YES
Part Number 000007661 11/16 65
Closed?
Yes
Machine On/Off
Verify New Setting Cycles
Remove Ice - Allow
To Warm And Retest
YES
Adjusting Closes
No
Evaporator Cold?
NO
Thermostat?
Yes
Yes
Verify New Setting Cycles
Allow Evaporator To
YES
Machine On/Off
Warm And Retest
Low Water Level
Switch Closed?
Reservoir Full Of
Replace Switch or Float Assembly
No
Water Level
Switch Closed?
No
Repair WiringYes
Inlet Valve?
Power To Water
Restore Water Supply / Replace Water Inlet Valve
Yes
Replace Switch or Float Assembly
NO
YES
NO
YES
66 Part Number 000007661 11/16
Water?
YES
Line Voltage To
Compressor Relay
Gear Motor Runs?
No
Gear Motor Runs?
Remove Auger
From Evaporator
Yes
Gear motor?
Line Voltage To
NO
Replace Gear Motor
Yes
Repair WiringNo
Thaw Evaporator
Yes
Ice In Evaporator?
Rebuild
Replace Gear Motor
Yes
Wiring From
Gearmotor Intact?
NO
Evaporator
No
Repair Wiring
No
YES
Part Number 000007661 11/16 67
Coil?
YES
Relay Closed?
Line Voltage To
Compressor?
Replace Relay
NO
Repair Wiring
NO
Verify:
Compressor Overload is Closed Start
Components Function
Fan Cycling Control Functions
Condenser Fan Motor Functions
Water cooled only:
Water Regulating Valve Functions
YES
68 Part Number 000007661 11/16
YES
YES
RF0300 Troubleshooting
SELF-CONTAINED AIR-COOLED
Normal Operation
When the toggle switch is placed in the “ON”
position the following controls must be in the
closed position before the ice machine will start:
A. Bin Thermostat
B. Low Evaporator Temperature Thermostat
C. Ice Chute Safety Switch
D. Low Water Level Switch
Placing the toggle switch in the ON position starts
the gear motor and a 10 minute compressor time
delay. The compressor starts and the float valve
controls the water inlet valve and water level.
The freeze cycle ends when ice contacts the bin
thermostat. The ice machine remains off until ice no
longer contacts the bin thermostat.
Part Number 000007661 11/16 69
Plug In Ice Machine, Reset BreakerNO
Move Switch To ON Position
Replace Switch
NO
NO
Electrical Flowchart - RF0300/RNS0300
YES
Machine?
Power Supplied to Ice
Toggle Switch In ON
70 Part Number 000007661 11/16
Position?
YES
YES
Switch Illuminated?
Bin Thermostat
Evaporator Safety
Thermostat Closed?
Chute Switch
Actuator
Replace Thermostat
Machine On/Off
Verify New Setting Cycles
Replace Thermostat
No
Machine On/Off
Verify New Setting Cycles
Adjust Or Replace
Replace Switch
Yes
Thermostat?
Adjusting Closes
No No
Thermostat?
Ice Contacting
NO
Closed?
Yes
Remove Ice - Allow
Yes
Actuator Functions?
No No
Actuator?
NO
Closed?
Yes
Retest
Remove Ice And
Yes
Yes
Yes
Thermostat?
Adjusting Closes
No
Warm And Retest
To Warm And Retest
YES
Allow Evaporator To
Yes
Ice Contacting
Evaporator Cold?
NO
YES
Part Number 000007661 11/16 71
Low Water Level
Switch Closed?
Reservoir Full Of
Replace Switch or Float Assembly
No
Water Level
No
Switch Closed?
Repair WiringYes
Inlet Valve?
Power To Water
Restore Water Supply / Replace Water Inlet Valve
Yes
Replace Switch or Float Assembly
NO
YES
72 Part Number 000007661 11/16
Water?
YES
NO
YES
Gear Motor Runs?
No
Line Voltage To
Compressor Time
Replace Gear Motor
Thaw Evaporator
Yes
Or
Rebuild
Replace Evaporator
Yes
Disconnect
Gear Motor Runs?
Evaporator From
Yes
Line Voltage To
NO
Yes
No
Ice In Evaporator?
Gear Motor
Repair WiringNo
Gear motor?
YES
Repair Wiring
Yes
Closed?
Gear Motor
Centrifugal Switch
NO
Delay?
Replace Gear Motor
No
YES
Part Number 000007661 11/16 73
Contactor Closed?
Line Voltage To
Compressor?
Line Voltage To
Compressor Contactor
Repair Wiring
10 Minute Time
Delay Expired?
Replace Time Delay Relay
Verify:
No
Power To Contactor Coil?
Install
Wait 10 Minutes - Do Not Install
Compressor Time Delay Jumper
Compressor Time
Delay Jumper
Yes
Water cooled only:
Start Components Function
Fan Cycling Control Functions
Compressor Overload is Closed
Condenser Fan Motor Functions
Water Regulating Valve Functions
Replace Contactor
Repair Wiring
YES
Yes
NO
NO
YES
Coil?
NO
Yes
74 Part Number 000007661 11/16
YES
NO
RFS0300/RNS0300 Troubleshooting
SELF-CONTAINED AIR-COOLED
When the toggle switch is placed in the “ON” position the
following controls must be in the closed position before
the ice machine will start:
A. Bin Thermostat
B. Ice Chute Safety Switch
C. Low Water Level Switch
D. High Pressure Cut-out Switch
E. Low Pressure Cut-Out Switch
Placing the toggle switch in the ON position starts the
gear motor and a 10 minute compressor time delay. The
compressor starts and the float valve controls the water
inlet valve and water level. The freeze cycle ends when ice
contacts the bin thermostat. The ice machine remains off
until ice no longer contacts the bin thermostat.
Part Number 000007661 11/16 75
Plug In Ice Machine, Reset BreakerNO
Move Switch To ON Position
Replace Switch
NO
NO
Electrical Flowchart - RFS0300/RNS0300
YES
Machine?
Power Supplied to Ice
Toggle Switch In ON
76 Part Number 000007661 11/16
Position?
YES
YES
Switch Illuminated?
Bin Thermostat
Low Pressure
Chute Switch
Actuator
Replace Thermostat
Machine On/Off
Verify New Setting Cycles
Replace LPCO
No
Evacuate, Recharge
Repair Refrigerant Leak,
Adjust Or Replace
Replace Switch
Yes
Thermostat?
Adjusting Closes
No No
Thermostat?
Ice Contacting
NO
Closed?
Yes
Remove Ice - Allow
Yes
YES
Actuator Functions?
No No
Actuator?
Ice Contacting
NO
Closed?
Yes
Retest
Remove Ice And
Yes
Yes
Yes
Below Cut-out?
Refrigerant Pressure
No
Warm And Retest
To Warm And Retest
Allow Evaporator To
Yes
Evaporator Cold?
NO
YES
Switch Closed?
Part Number 000007661 11/16 77
Low Water Level
Switch Closed?
Reservoir Full Of
Replace Switch or Float Assembly
No
Water Level
No
Switch Closed?
Repair WiringYes
Inlet Valve?
Power To Water
Restore Water Supply / Replace Water Inlet Valve
Yes
Replace Switch or Float Assembly
NO
YES
78 Part Number 000007661 11/16
Water?
YES
NO
YES
Gear Motor Runs?
No
Line Voltage To
Compressor Time
Replace Gear Motor
Thaw Evaporator
Yes
Or
Rebuild
Replace Evaporator
Yes
Disconnect
Gear Motor Runs?
Evaporator From
Yes
Line Voltage To
NO
Yes
No
Ice In Evaporator?
Gear Motor
Repair WiringNo
Gear motor?
YES
Repair Wiring
Yes
Closed?
Gear Motor
Centrifugal Switch
NO
Delay?
Replace Gear Motor
No
YES
Part Number 000007661 11/16 79
Contactor Closed?
Line Voltage To
Compressor?
Line Voltage To
Compressor Contactor
Repair Wiring
10 Minute Time
Delay Expired?
Replace Time Delay Relay
Verify:
No
Power To Contactor Coil?
Install
Wait 10 Minutes - Do Not Install
Compressor Time Delay Jumper
Compressor Time
Delay Jumper
Yes
Water cooled only:
Start Components Function
Fan Cycling Control Functions
Compressor Overload is Closed
Condenser Fan Motor Functions
Water Regulating Valve Functions
Repair Wiring
Replace Contactor
YES
Yes
NO
NO
YES
Coil?
NO
Yes
80 Part Number 000007661 11/16
YES
NO
RF0644/RF0650/RNS0600/RNS1000/RF1200 RFS1200 Troubleshooting
SELF-CONTAINED AIR-COOLED
Normal Operation
When the toggle switch is placed in the ON position the
following controls must be in the closed position before
the ice machine will start:
A. Bin Thermostat
B. High Pressure Cut-out Switch
C. Ice Chute Safety Switch
D. Low Pressure Switch
E. Low Water Level Switch
NOTE: Placing the toggle switch in the ON position starts
the gear motor. After the rotation speed sensor verifies
10 minutes of correct rotation the time delay ends and
the compressor starts.The ice machine will continue to
make ice until ice contacts the bin thermostat. The ice
machine remains off until ice no longer contacts the bin
thermostat.
ROTATION SENSOR OPERATION
light Definition
Yellow Blinking Time Delay Period
Yellow Solid Normal Operation Sensing
Red Blinking Fault Time Delay Period
Red Solid Lockout - 8 Consecutive Faults
Remove/Restore Power To Reset
Part Number 000007661 11/16 81
Electrical
AIR & WATER
RF1200/RFS1200
Plug In Ice Machine, Reset BreakerNO
Move Switch To ON Position
NO
Replace Switch
NO
Flowchart – RF0644/RNS0600/RF0650/RNS1000
YES
Machine?
Power Supplied to Ice
82 Part Number 000007661 11/16
Toggle Switch In ON
YES
Position?
Switch Illuminated?
YES
Bin Thermostat
Replace Thermostat
Low Pressure
Control Closed?
High Pressure
Control Closed?
Machine On/Off
Verify New Setting Cycles
Replace LPCO
No
Evacuate, Recharge
Repair Refrigerant Leak,
Replace HPCO
Check Fan Motor,
Clean Condenser,
No
Check FCC & Refrigeration System
Yes
Thermostat?
Adjusting Closes
No No
Thermostat?
Ice Contacting
NO
Closed?
Remove Ice - Allow
Yes
Yes
YES
Yes
Below Cut-out?
Refrigerant Pressure
No
Warm And Retest
To Warm And Retest
Allow Evaporator To
Yes
Evaporator Cold?
NO
YES
Refrigerant Pressure
No
Resets?
NO
Above Cut-out?
Yes
Check Fan Motor
Clean Condenser,
Check Fan Cycle Control
&
Trips
Resets
YES
Part Number 000007661 11/16 83
Low Water Level
Switch Closed?
YES
NO
Reservoir Full Of
Water?
NO
Restore Water Supply / Replace Water Inlet Valve
Replace Switch or Float Assembly
Power To Water
Inlet Valve?
Yes
Water Level
Switch Closed?
No No
Repair WiringYes
YES
Replace Switch or Float Assembly
Chute Switch
Closed?
NO
Adjust Or Replace
Actuator
Ice Contacting
Actuator?
Remove Ice And
Retest
Actuator Functions?
Replace Switch
Yes
No No
Yes
Yes
YES
84 Part Number 000007661 11/16
Gear Motor Runs?
No
10 Minute Time
Delay Expired?
Replace Gear Motor
Thaw Evaporator
Yes
Or
Rebuild
Replace Evaporator
Yes
Disconnect
Gear Motor Runs?
Evaporator From
Yes
Line Voltage To
NO
Yes
No
Ice In Evaporator?
Gear Motor
No
Wait 10 Minutes - Do Not Install
Gear motor?
Repair Wiring
YES
Compressor Time Delay Jumper
NO
YES
Part Number 000007661 11/16 85
Contactor Closed?
Line Voltage To
Compressor?
Line Voltage To
Compressor Contactor
Repair Wiring
No
Yes
Verify:
Start Components Function
Compressor Overload is Closed
Fan Cycling Control Functions
Water cooled only:
Condenser Fan Motor Functions
Water Regulating Valve Functions
Power To Contactor Coil?
Install
Delay Jumper
Compressor Time
NO
Yes
86 Part Number 000007661 11/16
Coil?
Replace Rotation Sensor/Time Delay Relay
YES
YES
Repair Wiring
NO
Replace Contactor
NO
YES
RNS1000/RF1200C/RFS1200C Troubleshooting
QUIETQUBE REMOTE AIR-COOLED MODELS WITH REMOTE CONDENSING UNIT
Normal Operation
When the toggle switch is placed in the ON position the
following controls must be in the closed position before
the ice machine will start:
A. Bin Thermostat
B. High Pressure Cut-out Switch
C. Ice Chute Safety Switch
D. Low Pressure Switch
E. Low Water Level Switch
Placing the toggle switch in the ON position starts the
gear motor. After the rotation speed sensor verifies 10
minutes of correct rotation the time delay ends and the
liquid line solenoid valve opens.
• When the refrigerant pressure is high enough to close
the low-pressure control the contactor coil energizes
and the compressor starts.
• The refrigerant pressure will increase and close the
fan cycling pressure control and the condenser fan
motor starts.
The ice machine will continue to make ice until ice
contacts the bin thermostat and the liquid line solenoid
valve closes and the refrigeration system pumps down.
• The refrigerant pressure drops and the fan cycling
pressure control opens stopping the condenser fan
motor.
• When the refrigerant pressure is low enough to open
the low pressure control, the contactor coil is deenergized and the compressor stops.
NOTE: The ice machine remains off until ice no longer
contacts the bin thermostat.
Part Number 000007661 11/16 87
Electrical Flowchart
YES
Off Position?
Toggle Switch In
YES
Isolate And Ohm Switch
Check Wiring From Panel
Trips?
Immediately
YES
- RNS1000/RF1200C/RFS1200C QuietQube
Restore Power, Reset BreakerNO
Power Supplied
to Ice Machine?
NO
Wire If Required
Isolate And Ohm Each
Component - Then Each
NO
Test Run
YES
TRIPS
Replace Switch
Move Switch To ON Position
NO
ON Position?
Toggle Switch In
NO
YES
Switch
YES
Illuminated?
88 Part Number 000007661 11/16
Bin Thermostat
Chute Switch
Actuator
Reservoir Full Of
Replace Thermostat
Adjust Or Replace
Replace SwitchYES
Machine On/Off
Verify New Setting Cycles
Repair Wiring
Float Assembly
Replace Switch or
YES
YES
Restore Water Supply / Replace Water Inlet Valve
Water Level
Switch Closed?
NO NO
YES
Inlet Valve?
Power To Water
NO
YES
Water?
Ice Contacting
Actuator Functions?
NO NO
Actuator?
NO
Closed?
YES
Retest
Remove Ice And
Yes
YES
Thermostat?
Adjusting Closes
NO NO
Remove Ice - Allow
To Warm And Retest
YES
Thermostat?
Ice Contacting
NO
YES
Closed?
Part Number 000007661 11/16 89
Low Water Level
Switch Closed?
Gear Motor Runs?
NO
10 Minute Time
Delay Expired?
Replace Gear Motor
Runs?
Gear Motor
YES
Disconnect
Gear Motor
Evaporator From
Thaw EvaporatorYES
Ice In
Evaporator?
Or
Rebuild
Replace Evaporator
NO
YES
Float Assembly
Replace Switch or
Line Voltage To
NO
NO
YES
90 Part Number 000007661 11/16
YES
Repair WiringNO
Wait 10 Minutes - Do Not Install
Gear motor?
YES
Compressor Time Delay Jumper
NO
YES
Replace Rotation
Delay Relay Contacts
Line Voltage To
Left Delay Relay Coil?
Sensor/Time Delay
Repair Wiring
YES
YES
Yes
YES
Delay Relay Contacts
Replace Relay
NO
NO
Closed?
Closed?
Replace Relay
YES
NO
Delay Relay Coil?
Power To Left Time
Install
Left Evaporator
Delay Jumper On
Compressor Time
NO
Part Number 000007661 11/16 91
Replace HPCO
Line Voltage To
Compressor
Contactor Coil?
Above Cut-out?
Refrigerant Pressure
NO NO
NO Resets?
High Pressure
Control Closed?
Resets
NO
NO
Low Pressure
Control Closed?
Verify:
Line Voltage At
LPCO Cut-in
Replace LPCO Switch
Both Shut-off Valves are Open
Locate and Repair Refrigerant Leak
Refrigerant Pressure is Higher Than
Repair/Replace Liquid Line Solenoid
YES
Valve?
Liquid Line Solenoid
YES
Repair Wiring
Check Fan Motor,
Clean Condenser,
Refrigeration System
Check Fan Cycle Control &
YES
&
Trips
Clean Condenser,
YES
Replace Relay
NO
Check Fan Motor
Check Fan Cycle Control
YES
92 Part Number 000007661 11/16
YES
Contactor
Line Voltage To
Compressor?
Verify:
Start Components Function
Fan Cycling Control Functions
Compressor Overload is Closed
Condenser Fan Motor Functions
Repair Wiring
Replace Contactor
YES
NO
YES
Part Number 000007661 11/16 93
Closed?
NO
YES
RF1200R/RFS1200R Troubleshooting
HEAD SECTION FOR RACK REFRIGERATION SYSTEMS
Normal Operation
When the toggle switch is placed in the ON position the
following controls must be in the closed position before
the ice machine will start:
A. Bin Thermostat
B. Ice Chute Safety Switch
C. Low Water Level Switch
Placing the toggle switch in the ON position starts the
gear motor. After the rotation speed sensor verifies 10
minutes of correct rotation the time delay ends and the
liquid line and suction solenoid valves energize.
The ice machine will continue to make ice until ice
contacts the bin thermostat and the liquid line and
suction solenoid valves close.
The ice machine remains off until ice no longer contacts
the bin thermostat.
ROTATION SENSOR OPERATION
light Definition
Yellow Blinking Time Delay Period
Yellow Solid Normal Operation Sensing
Red Blinking Fault Time Delay Period
Red Solid Lockout - 8 Consecutive Faults
Remove/Restore Power To Reset
94 Part Number 000007661 11/16
Yes
Trips?
Immediately
Restore Power, Reset BreakerNO
Off Position?
Toggle Switch In
No
Isolate And Ohm Each
No
Yes
Wire If Required
Component - Then Each
Trips
Move Switch To ON Position
Inlet Valve
Ohm Toggle Switch, Time
Delays, Gear Motors, Water
Replace Switch
NO
NO
Electrical Flowchart – RF1200R/RFS1200R
Yes
Power Supplied
to Ice Machine?
Toggle Switch In
Part Number 000007661 11/16 95
ON Position?
YES
Switch
Illuminated?
YES
Replace Thermostat
Machine On/Off
Verify New Setting Cycles
Actuator
Adjust Or Replace
Replace Switch
Yes
Yes
Thermostat?
Adjusting Closes
No No
Remove Ice - Allow
Yes
Thermostat?
Ice Contacting
NO
Closed?
Bin Thermostat
To Warm And Retest
YES
Yes
Actuator Functions?
No No
Ice Contacting
NO
Chute Switch
Retest
Remove Ice And
Yes
Actuator?
Closed?
Yes
96 Part Number 000007661 11/16
Repair Wiring
No
Inlet Valve?
Replace Switch or Float Assembly
Power To Water
Restore Water Supply / Replace Water Inlet Valve
Yes
Replace Switch or Float Assembly
Yes
No
Closed?
Float Switch
Yes
NO
Water?
Reservoir Full Of
YES
NO
YES
Switch Closed?
Low Water Level
Part Number 000007661 11/16 97
No
Gear Motor Runs?
Disconnect
Gear Motor
Evaporator From
Yes
Gear motor?
Line Voltage To
Replace Gear Motor
Yes
Repair WiringNo
Thaw Evaporator
Yes
No
Rebuild
Ice In Evaporator?
Wait 10 Minutes - Do Not Install
Compressor Time Delay Jumper
NO
Or
Replace Evaporator
YES
YES
Delay Expired?
Gear Motor Runs? NO
10 Minute Time
YES
98 Part Number 000007661 11/16
Repair Wiring
No
Power To Time
Delay Relay Coil?
Install
Delay Jumper
Compressor Time
Yes
Replace Rotation
Sensor/Time Delay
Delay Relay
Contacts Closed?
No Yes
Replace Relay
Replace Contactor
YES
NO
YES
Line Voltage To
Delay Relay Coil?
NO
Delay Relay
Contacts Closed?
YES
NO Repair Wiring
YES
Contactor Coil?
Line Voltage To
NO
YES
Contactor Closed?
Part Number 000007661 11/16 99
Repair Wiring
YES
Repair Wiring
NO
YES
Line Solenoid?
Line Voltage To Liquid
Replace Defective Valve
NO
Solenoid Valves Open?
Suction And Liquid Line
Determine Refrigeration System Issue
YES
Check Contactor Contacts On Both Contactors
NO
YES
Line Solenoid?
Line Voltage To Suction
100 Part Number 000007661 11/16
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