Whirlpool KUIA15NRH'11, KUIA18NNJ'11, KUIA15PLL'11, KUIA18PNL'11, KUIA15NLH'11 User Manual

...
KAR-19
TECHNICAL EDUCATION
2007 DESIGN
15q & 18q AUTOMATIC
ICE MAKERS
KUIA15NRH*11 KUIA15PRL*11 KUIA15NLH*11 KUIA15PLL*11
* Denotes Color Designation
KUIA18NNJ*11 KUIA18PNL*11
Intoductory Models
JOB AID 4317408
FORWARD
This KitchenAid Job Aid “2007 Design 15" & 18" Automatic Ice Makers” (Part No. 4317408), provides the In-Home Service Professional with information on the installation, operation, and service of the 2007 Design 15" & 18" Automatic Ice Makers. For specifi c information on the model being serviced, refer to the “Use and Care Guide,” or “Tech Sheet” provided with the ice maker.
The Wiring Diagram and Strip Circuits used in this Job Aid are typical and should be used for training purposes only . Always use the Wiring Diagram supplied with the product when servicing the ice maker.
GOALS AND OBJECTIVES
The goal of this Job Aid is to provide detailed information that will enable the In-Home Service Professional to properly diagnose malfunctions and repair the KitchenAid 2007 Design 15" & 18" Automatic Ice Makers.
The objectives of this Job Aid are to:
• Understand and follow proper safety precautions.
• Successfully troubleshoot and diagnose malfunctions.
• Successfully perform necessary repairs.
• Successfully return the ice maker to its proper operational status.
WHIRLPOOL CORPORA TION assumes no responsibility for any repairs made on our products by anyone other than In-Home Service Professionals.
Copyright © 2007, Whirlpool Corporation, Benton Harbor, MI 49022
- ii -
TABLE OF CONTENTS
Page
GENERAL .............................................................................................................................. 1-1
Ice Maker Safety ................................................................................................................ 1-1
KitchenAid Model & Serial Number Designations .............................................................. 1-2
Model & Serial Number Label Location.............................................................................. 1-3
Specifi cations ..................................................................................................................... 1-4
INSTALLATION INFORMATION ............................................................................................ 2-1
Electrical Supply Requirements ......................................................................................... 2-1
Water Supply And Drain Connections ................................................................................ 2-2
THEORY OF OPERATION .................................................................................................... 3-1
Operating Systems............................................................................................................. 3-1
Operational Modes ............................................................................................................. 3-5
Models With Internal Drain Pumps..................................................................................... 3-8
COMPONENT ACCESS ........................................................................................................ 4-1
Component Locations ........................................................................................................ 4-1
Removing The Bin Thermistor, Cutter Grid, Evaporator Thermistor,
& Water Distributor ......................................................................................................... 4-2
Removing The Electronic Control Housing Components ................................................... 4-5
Removing The Water Recirculation Pump ......................................................................... 4-7
Removing The Reservoir Drain Pump & Water Level Sensor............................................ 4-8
Removing The Condenser Fan Motor ................................................................................ 4-9
Removing The Evaporator ............................................................................................... 4-12
Removing The Measured Fill Water Valve ....................................................................... 4-16
Removing The Hot Gas Valve & Solenoid ....................................................................... 4-17
Removing The Condenser ............................................................................................... 4-18
Removing The Compressor ............................................................................................. 4-19
Removing The Internal Drain Pump ................................................................................. 4-21
Removing The Ice Maker Door & Gasket (15" Models) ................................................... 4-22
Removing The Ice Maker Door & Gasket (18" Models) ................................................... 4-23
COMPONENT TESTING ........................................................................................................ 5-1
Bin Thermistor .................................................................................................................... 5-1
Evaporator Thermistor ....................................................................................................... 5-1
Cutter Grid.......................................................................................................................... 5-2
Dual Transformer ............................................................................................................... 5-2
Water Recirculation Pump ................................................................................................. 5-3
Reservoir Drain Pump ........................................................................................................ 5-3
Water Level Sensor ............................................................................................................ 5-4
Condenser Fan Motor ........................................................................................................ 5-4
Measured Fill Water Valve ................................................................................................ 5-5
Hot Gas Valve Solenoid ..................................................................................................... 5-5
Compressor, Overload Protector, & Relay ......................................................................... 5-6
- iii -
Page
DIAGNOSTICS & TROUBLESHOOTING ............................................................................. 6-1
Water And Its Effect On Making Ice ................................................................................... 6-1
Troubleshooting Chart ........................................................................................................ 6-2
Diagnostic Flow Chart For Ice Maker Control Board ......................................................... 6-5
WIRING DIAGRAM & STRIP CIRCUITS ............................................................................... 7-1
Wiring Diagram .................................................................................................................. 7-1
Strip Circuits ....................................................................................................................... 7-2
TECH TIPS ............................................................................................................................. 8-1
Cleaning The Ice Maker ..................................................................................................... 8-1
Cleaning The Evaporator Plate ....................................................................................... 8-1
- iv -
GENERAL
WARNING
DANGER
ICE MAKER SAFETY
Your safety and the safety of others are very important.
We have provided many important safety messages in this manual and on the appliance. Always read and obey all safety messages.
This is the safety alert symbol. This symbol alerts you to potential hazards that can kill or hurt you and others. All safety messages will follow the safety alert symbol and either the word
“DANGER” or “WARNING.” These words mean:
You can be killed or seriously injured if you don’t
WARNING
DANGER
All safety messages will tell you what the potential hazard is, tell you how to reduce the chance of injury, and tell you what can happen if the instructions are not followed.
immediately follow instructions.
You can be killed or seriously injured if you don’t follow instructions.
1-1
KITCHENAID MODEL & SERIAL NUMBER DESIGNATIONS
MODEL NUMBER K UI A 15 NR H S 0
INTERNATIONAL SALES IND.
OR MARKETING CHANNEL
IF PRESENT
PRODUCT GROUP
K = KITCHENAID
PRODUCT IDENTIFICATION
UI = UNDERCOUNTER ICE MAKER
MERCHANDISING SCHEME
A = ARCHITECT C = CULINARY & ARCHITECT II
S = STANDARD O = OUTDOOR
V = SIGNATURE SERIES
CAPACITY / SIZE / SERIES / CONFIGURATION
15 = 15" WIDE
18 = 18" WIDE
FEATURES
PR = PUMP, RIGHT HAND DOOR SWING
PL = PUMP, LEFT HAND DOOR SWING
PN = PUMP, NON-REVERSIBLE DOOR SWING
NR = NON-PUMP, RIGHT HAND DOOR SWING
NL = NON-PUMP, LEFT HAND DOOR SWING
NN = NON-PUMP, NON-REVERSIBLE DOOR SWING
YEAR OF INTRODUCTION
H = 1999, J = 2000, K = 2001, L = 2002, S = 2006, T = 2007
COLOR CODE
B = BLACK, W = WHITE, S = STAINLESS
T = BISCUIT, M = METEORITE
ENGINEERING CHANGE (NUMERIC)
SERIAL NUMBER E T 04 54321
DIVISION RESPONSIBILITY
E = EVANSVILLE, IN
YEAR OF PRODUCTION
T = 2006, U = 2007
WEEK OF PRODUCTION
04 = 4th WEEK
PRODUCT SEQUENCE NUMBER
MODEL NUMBER
SERIAL NUMBER
1-2
MODEL & SERIAL NUMBER LABEL LOCATION
The Model/Serial Number label location is shown below.
Model & Serial Number Location
1-3
SPECIFICATIONS
AC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97 to 127 VAC (rated 115VAC), 60 Hz
Amperage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5 Amps (max)
Minimum Circuit Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 Amps
Ice Production per 24 hours (Approximate)
Water Temperature
Ambient Temperature
60F (15C) 70⋅°F (21°C) 46 lbs (21 kg)
80⋅°F (27°C) 47 lbs (21 kg) 90⋅°F (32°C) 40 lbs (18 kg) 100⋅°F (38°C) 40 lbs (18 kg) 110⋅°F (43°C) 38 lbs (17 kg)
Ice Shape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3/4" x 3/4" Square
Ice Thickness @ Normal Setting (Approximate) . . . . . . . . . . . . . . . . . . . . . . . . .0.32" (8.1 mm)
Ice Thickness @ Thin Setting (Approximate) . . . . . . . . . . . . . . . . . . . . . . . . . . .0.28" (7.0 mm)
Ice Thickness @ Thick Setting (Approximate) . . . . . . . . . . . . . . . . . . . . . . . . . . 0.39" (9.9 mm)
15 Inch Storage Capacity (Approximate). . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 lbs. (11.3 kg)
18 Inch Storage Capacity (Approximate). . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35 lbs. (15.9 kg)
Exterior Dimensions (W x D x H) . . . 15" or 18" x 24" x 34" (381 or 457.2 x 609.6 x 863.6 mm)
Exterior Finish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Stainless Steel or Painted Steel
Net Weight . . . . . . . . . . . . . . . . . . . . . . . . . . 15" = 94 lbs. (42.6 kg) 18" = 123 lbs. (55.8 kg)
Cube Thickness Control . . . . . . . . . . . . . . . . . . . Water Level Sensor & Control Board Setting
Harvest Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Thermistor under Evaporator
Bin Ice Level Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Thermistor on side of Bin
Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . R134a
Ambient Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 to 100F
Water Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 to 120 psig
Water Consumption (Dependent On Water Pressure) . . . . . . . . . . 6 to 10 gallons per 4 hours
1-4
INSTALLATION INFORMATION
WARNING
ELECTRICAL SUPPLY REQUIREMENTS
IMPORTANT: If this product is connected to
WARNING
a GFCI (Ground Fault Circuit Interrupter) pro­tected outlet, nuisance tripping of the power supply may occur, resulting in the loss of cool­ing. Ice quality may be affected. If nuisance tripping has occurred, and if the condition of the ice appears poor, dispose of it.
Electrical Shock Hazard
Plug into a grounded 3 prong outlet. Do not remove ground prong. Do not use an adapter. Do not use an extension cord. Failure to follow these instructions can
result in death, fi re, or electrical shock.
Before you move the ice maker into its fi nal location, it is important to make sure you have the proper electrical connection:
• A 115 Volt, 60 Hz, AC only 15- or 20- amp electri­cal supply , properly grounded in accordance with the National Electrical Code and local codes and ordinances, is required.
• It is recommended that a separate circuit, serving only the ice maker, be provided. Use a receptacle which cannot be turned off by a switch or pull chain.
Recommended Grounding Method
For personal safety, this appliance must be grounded. This appliance is equipped with a power supply cord having a 3-prong grounding plug. To minimize possible shock hazard, the cord must be plugged into a mating, 3- prong, grounding-type wall receptacle, grounded in accordance with the National Electrical Code and local codes and ordinances. If a mating wall receptacle is not available, it is the per­sonal responsibility of the customer to have a properly grounded, 3-prong wall receptacle installed by a qualifi ed electrician.
2-1
WATER SUPPLY AND DRAIN CONNECTIONS
CONNECTING THE WATER LINE
1. Turn off the main water supply.
2. Turn on the nearest faucet and allow it to run long enough to clear line of water.
3. Find a 1/2"(12.70 mm) to 1-1/4" (3.18 cm) vertical cold water pipe near the ice maker.
NOTE: A horizontal pipe will work, but drill on the top side of the pipe, not the bottom. This will keep water away from the drill motor, and also keeps normal sediment from collecting in the valve.
4. Using a grounded drill, a 1/4" (6.35 mm) hole in the cold water pipe you have se­lected.
5. Fasten a shutoff valve to the cold water pipe with a pipe clamp. Make sure that the outlet end is fi rmly in the 1/4" (6.35 mm) drilled hole, and that the washer is under the pipe clamp.
IMPORTANT: Do not use a piercing-type, or a 3/16" (4.76 mm) saddle-type valve. These can reduce water fl ow and easily become clogged.
8. Use 1/4" (6.35 mm) O.D. copper tubing for the cold water supply and:
a) Measure from the connection at the
back of the ice maker to the cold water pipe.
b) Add an extra 36" (91.4 cm) to ensure
that you have the proper length. Make sure both ends of the copper tubing are cut square.
c) Slip a compression sleeve and com-
pression nut over the ends of the copper tubing.
d) Insert the end of tubing into the water
shutoff outlet as far as it will go, and screw the compression nut onto the outlet. Tighten the compression nut with an adjustable wrench, but do not overtighten it.
9. Place the free end of the copper tubing into a container or sink, and turn on the main water supply. Flush the tubing until water is clear, and then turn of f the shutoff valve on the water pipe. NOTE: Always drain the water line before making the fi nal connec- tion to the inlet of the water valve to avoid a possible water valve malfunction.
6. Tighten the packing nut.
7. Tighten the pipe clamp screws carefully and evenly so that the washer makes a watertight seal. Do not overtighten the pipe clamp. If the water line is soft copper tubing, you could crush it.
10. Bend the copper tubing to meet the water line inlet, located on the back of the ice maker cabinet, as shown below.
2-2
11. Thread the nut onto the coupling at the end of the copper tubing. Tighten the nut by hand. Then tighten it with a wrench two more turns. Do not overtighten.
CONNECTING THE DRAIN
SIDE VIEW
15" Models
Gravity Drain System
Connect the ice maker drain to your drain in accordance with all state and local codes and ordinances. If the ice maker is provided with a gravity drain system, use the following guidelines when installing the drain lines. This will avoid water from fl owing back into the ice maker storage bin and potentially fl owing onto the fl oor, causing water damage.
• Drain lines must have a minimum of 5/8"
(15.88 mm) inside diameter.
• Drain lines must have a 1" drop per 48"
(2.54 cm drop per 122 cm) of run, or 1/4" drop per 12" (6.35 mm per 30.48 cm) and not have any low points where water can settle.
• The fl oor drains must be large enough to
accommodate drainage from all drains.
• The ideal installation has a standpipe with a
1-1/2" (3.81 cm) to 2" (5.08 cm) PVC drain reducer installed directly below the outlet of the drain tube, as shown. Y ou must maintain a 1" (2.54 cm) air gap between the drain hose and the standpipe.
18" Models
1. Drain Hose
2. 1" (2.54 cm) Air Gap
3. PVC Drain Reducer
4. Center of drain should be 20" (50.8 cm) back on 15" models from front of door and 23" (58.4cm) back on 18" models from front of door, with or without the 3/4" (1.91 cm) panel on the door.
• It may be desirable to insulate the drain line up to the drain inlet.
2-3
Drain Pump System (On Some Models)
WARNING
WARNING
Connect the ice maker drain to your drain in accordance with the International Plumbing Code and any local codes and ordinances.
NOTE: If the drain hose becomes twisted and water cannot drain, the ice maker will not oper­ate.
Connecting the Drain
After ensuring that the drain system is ad­equate, follow these steps to properly place the ice maker:
WARNING
1. Plug in ice maker or reconnect power.
WARNING
Excessive Weight Hazard
Use two or more people to move and install ice maker.
Failure to do so can result in back or other injury.
2. Style 1 - For gravity drain system, push the ice maker into position so that the ice maker drain tube is positioned over the PVC drain reducer. Style 2 - For drain pump system connect the drain pump outlet hose to the drain. See “Drain Pump System” earlier in this section.
Electrical Shock Hazard
Plug into a grounded 3 prong outlet. Do not remove ground prong. Do not use an adapter. Do not use an extension cord. Failure to follow these instructions can
result in death, fi re, or electrical shock.
3. Recheck the ice maker to be sure that it is level.
4. If it is required by your local sanitation code, seal the cabinet to the fl oor with an approved caulking compound after all water and electrical connections have been made.
2-4
THEORY OF OPERATION
OPERATING SYSTEMS
There are three operating systems in the ice maker:
• Refrigeration System
• Water System
• Electrical System
REFRIGERATION SYSTEM
The refrigeration system in the ice maker is very similar to the system used in other refrig­eration appliances. The refrigerant used in this unit is R134a.
There are two very important additions to the refrigeration system in the ice maker: the Hot Gas Valve, and the Condenser Accumulator Tube. The components operate as follows:
• Hot Gas Valve - Allows high pressure refrigerant gas to bypass the condenser and fl ow through the condenser accu- mulator tube.
• Condenser Accumulator T ube - Hot gas pushes liquid refrigerant through the accumulator tube into the evaporator, helping to evenly heat the evapora­tor plate so that the ice slab releases quickly and evenly.
3-1
WATER SYSTEM
The water system provides:
• Fresh water for ice production
• Water recirculation as ice is produced
• Water removal after ice is produced
The water system circulates water to freeze into ice on the evaporator during the freeze cycle. During the harvest cycle, it drains away minerals and contaminates. During the clean cycle, cleaning solution is circulated to clean the system of minerals and contaminates.
The hardness of the water supplied to the ice maker will affect the quality of the ice that is produced. It may also affect the operation of the water system.
A water softener , or poly phosphate feeder , will not cure all of the problems associated with hard water, but they can be used to reduce scale buildup in the ice maker. NOTE: Some poly phosphate feeders will cause a slime buildup in the water system when the water supply has a low mineral content.
The ice maker’s water system is shown on next page.
3-2
Evaporator
WATER SYSTEM COMPONENT LOCATIONS
Water Distributor
Water Return Tube
Manual Drain
Drain Overfl ow
Water Valve Outlet Tube
Measured Fill Water Inlet Valve
Water Level Sensor
Water Recirculation Pump
Reservoir Pan
Reservoir Drain Pump
Bin Drain
From Water Supply
3-3
ELECTRICAL SYSTEM
The ice maker’s electrical system provides power for the refrigeration and water systems, and controls the operation of each component.
3-4
OPERATIONAL MODES
There are four main operational modes for the ice maker (more detailed operation is found in the fl ow chart on page 6-5):
• Freeze
• Harvest
• Clean
• Service (Diagnostics)
ICE MAKING CYCLE
In addition, there are three possible “Off” cycles for the ice maker. They occur when:
1. The bin is full of ice and the LED is il- luminated “ON/OFF” (Idle mode).
2. The "On/OFF” control switch has been held for three seconds. The ON/OFF LED will go out.
3. The Holiday Mode.
Electrical System
Line Voltage is supplied to the electrical control switches and the primary side of the step-down dual transformer. The dual transformer reduces 120 VAC to 8.75 VAC for the cutter grid and the bin light and 12 V AC for the drain and recir­culating pumps. The electronic control board directs 12 VAC to the water recirculating and reservoir drain pumps, and 120 VAC to the hot gas solenoid, condenser fan motor, and compressor. The measured fi ll water valve will always have 120 V AC on the BK and WH wires and 14 VDC on the OR/WH and BK/RD wires. An evaporator thermistor supplies temperature information to the electronic control to determine when to terminate the harvest cycle.
Refrigeration System
The hot gas refrigerant, under high pressure, is forced through the condenser, where it changes into a liquid, and fl ows through the drier and capillary tube into the evaporator. Under low pressure in the evaporator, the liquid refrigerant absorbs heat from the water fl owing over the evaporator as the refrigerant evaporates into a gas. As a low pressure gas, the refrigerant ows back through the suction line of the heat exchanger, to the compressor.
During the Freeze mode, some of the hot gas that is in the condenser accumulating tube, condenses to a liquid, and remains in the ac­cumulating tube.
During the later stages of the Freeze mode, as the ice slab forms on the evaporator freezing plate, some of the refrigerant passing through the evaporator will not evaporate into a gas, but will remain a liquid. This liquid refrigerant will settle in the accumulator, while the refrigerant vapor is sucked off through the suction tube at the top of the accumulator. This accumulated liquid refrigerant will eventually be directed to the evaporator to quickly warm the evaporator plate during the Harvest mode.
NOTE: It is very important that the accumulator is not tilted out of a horizontal position. If moved, it could cause compressor failure.
Water System
The water recirculating pump moves the water from the reservoir pan up to the distributor, where it fl ows out over the evaporator freez- ing plate.
Water that does not freeze on the evaporator plate runs off the front edge, and falls back into the reservoir, where it is recirculated back to the water distributor.
As the ice slab forms, the minerals in the water are on the surface of the ice. The water fl ow- ing over the top of the ice slab washes these minerals back into the water reservoir pan. The water continues to recirculate until the water level in the reservoir drops to the bottom of the water level sensor. When the water level in the reservoir drops below the sensor, the control terminates the freeze mode and initiates the harvest mode.
The control signals the measured fi ll valve to fi ll to the selected water level setting. The mea­sured fi ll valve uses a fl ow meter to accurately fi ll to the correct volume. Thin Ice uses 32 ounces (954cc), Normal Ice 37 ounces (1106cc), and Thick Ice 42.5 ounces (1258cc).
3-5
HARVEST MODE
Electrical System
When the water level in the reservoir drops below the water level sensor it signals the electronic control to terminate power to the condenser fan, and then the water recirculating pump. The reservoir drain pump is activated to fully drain the reservoir. Power is then sup­plied to the hot gas valve and a fi ll request is sent to the measured fi ll valve. The fi ll valve lls to the requested volume while the hot gas valve is energized for the balance of the har­vest mode.
If the evaporator thermistor is unplugged, the evaporator defaults to a timed 4 minute har­vest.
If the water level sensor is disconnected or open, the control defaults to 25 minutes of freeze time. The cleaning indicator LED fea­ture will not function if the water level sensor is disconnected.
Refrigeration System
The hot gas valve opens, allowing high pres­sure refrigerant gas to bypass the condenser, and fl ow through the condenser accumulating tube. The hot gas pushes the liquid refrigerant that has accumulated in the accumulator tube up into the evaporator. The hot liquid refrigerant evenly heats the evaporator plate so that the ice slab releases quickly and evenly.
The ice slab, when released, slides off of the evaporator plate onto the cutter grid.
Water System
The electronic control board sends a signal to the water valve. The signal tells the water valve how much water to be fi lled, allowing water to
ow into the water reservoir pan. The water ll volume is determined by the ice thickness
setting. As a result of the hot gas fl ow and the ice sliding
off the evaporator plate, the evaporator tem­perature begins to rise. When the evaporator thermistor reaches the set temperature (52°F), the unit switches to the Freeze mode. This cy­cling between Freeze and Harvest, continues until the ice bin is full.
The electronic control board operates the vari­ous components and systems in the ice maker for each of the Freeze and Harvest modes.
CLEAN MODE
Electrical System
The electronic control board operates the various components and systems during the Clean mode.
For the order of the components cycled, see the fl ow chart on page 6-13.
Water System
When the service control switch is in the “Clean” position, the water recirculating pump circulates the cleaning solution that has been added to the reservoir, up to the water distributor , across the evaporator, and back into the reservoir, where it is recirculated. The compressor and hot gas valve operate to heat the evaporator.
DIAGNOSTIC MODE
1. Do not continue with the diagnosis of the ice maker if a fuse is blown, a circuit breaker is tripped, or if there is less than a 120 volt power supply at the wall outlet.
2. All units that have failed during the fi rst few days of use should be checked for loose connections or miswiring.
Entering and Navigating — Manual Diagnostics
• Turn the product on. Within 10 seconds of
Power On, press and hold the On and the Clean buttons. Release both buttons when all user interface LEDs begin to fl ash.
Within 5 seconds of all LEDs fl ashing, push
any other button on the user interface. This begins manual diagnostics.
• If no button is pressed within 5 seconds, the
product goes into the automatic diagnostic mode used at the assembly plant. Each component is cycled for 5 seconds.
The Service button (or Off button on some
models) is used to advance through each step.
T o exit manual diagnostics, press the Power
button (or On button on some models)
3-6
Diagnostic Chart
After pressing any button to enter manual diagnostics all LEDs will illuminate for 5 seconds. The controls will then automatically move to the fi rst component.
Order Component On/Off LED
1 Entry intoTest
2 Bin Thermistor ON Solid--OK
3 Evaporator
4a Water Valve
4b Water Level
5 Recirculation
6 Reservoir Drain
7 Compressor and
8 Compressor and
9 Twice Ice OFF OFF ON Solid--No delay
10 Ice Thickness OFF 2 Blinks--Thin
Mode
Thermistor
4 min time out Service button
press will advance
to step 6
Sensor
Pump
Pump
Condenser Fan
Motor
Hot Gas Valve
(On for some
models)
ON ON ON ON
2 blinks--Open 4blinks--Short
OFF OFF ON Solid--OK
OFF ON Solid--reservoir full
OFF ON Solid--reservoir full
ON ON ON OFF
ON OFF OFF OFF
ON Solid while cooling Blinking when evap
ON Solid while heating ON Solid while heating
Service LED
(Off for some
models)
OFF OFF OFF
Blinking--reservoir
empty
Blinking--reservoir
empty
thermistor reaches
4.5ºF; full frost pattern should be visible
Blinking when evap
thermistor reaches 52ºF
4 Blinks--Normal
6 Blinks--Thick
Press Clean button to
cyclebetween settings
Clean LED Feature Light (for
2blinks--Open 4blinks--Short
ON OFF
ON OFF
ON OFF
ON Solid while heating OFF
Blinking--10 min delay
between cycles
Press Clean button to
cyclebetween settings
OFF OFF
some models)
OFF
OFF
ERROR DISPLAYS These errors will occur at any time during normal operation if a thermistor fails. 2 Blinks — Service Light is blinking twice in repeating intervals – This signi es a bin thermistor
failure. Check that the bin thermistor is plugged in to the control box. Check that the bin thermis­tor is not open or shorted. Replace the thermistor if it is open or shorted.
3 Blinks — Service Light is blinking three times in repeating intervals – This signifi es a harvest failure. Check that the evaporator thermistor is connected to the sealed system tubing. If the thermistor is plugged in, ensure that it is fully connected to the control box. (The ice maker will operate on a timed cycle if the evaporator thermistor is unplugged.) Check the resistance of the thermistor. If the thermistor checks good, then look for a frost pattern on the evaporator plate. The unit may be low on refrigerant.
HOLIDAY MODE
The Holiday Mode feature is designed for the traveler or for those whose religious observances require turning off the lights and the ice maker. By selecting this feature, ice production and the interior lights will be disabled. Press and hold the Holiday Mode button to turn on the Holiday Mode feature. Press and hold the button again to turn off the feature.
The Holiday mode LED is lite constantly in this mode.
3-7
MODELS WITH INTERNAL DRAIN PUMPS
The power cord on the internal drain pump is connected to a 120 VAC wall outlet. The ice maker is then connected to the 120 V AC outlet on the drain pump. If the drain pump fails, or if the drain becomes blocked, power is shut off to the 120 VAC outlet on the drain pump.
When the unit is fi rst plugged in, the drain pump will run for 20 seconds. The power can be disconnected and reconnected to verify that the pump is operating properly.
Water from the ice maker reservoir, or melting ice from the bin, drains down the bin drain tube
Pump Inlet
Contacts Sense Continuity Through The Water
into the pump inlet, and then into the drain pump chamber. As the water level rises, it bridges the “full” contacts, and the pump starts to run. The pump discharges the water through the outlet and the check valve. When the “full” connection is removed, the pump runs for an additional 12 seconds to empty the tank.
If the water level in the drain pump continues to rise, due to a slow or blocked drain, or a blocked vent hose, and touches the “overfi ll” contact, power will be turned off to the drain pump’s 120 V AC outlet, causing the ice maker to turn off.
Vent Outlet
White
Black
Green
Pump Outlet & Check Valve
Overfi ll Contact
Full Contacts
Connector Hose (Contains Screen Washer)
Screen Washer
3-8
COMPONENT ACCESS
This section instructs you on how to service each component inside the 2007 Design 15” & 18” Automatic Ice Makers. The components and their locations are shown below.
COMPONENT LOCATIONS
Evaporator NOTE: The Evaporator Thermistor Is Located On Tubing Below Evaporator
Cutter Grid
Compressor
Condenser Fan Motor
Dual Transformer
Light Switch
Electronic Control Board
Push-button Switch
Bin Thermistor
Water Level Sensor
Water Recirculation Pump
Reservoir Drain Pump
Hot Gas Valve & S o l e n oi d ( B e hi n d Condenser)
Measured Fill Water Valve
Condenser
Condenser Accumulator Tube
4-1
REMOVING THE BIN THERMISTOR, CUTTER GRID,
WARNING
EVAPORATOR THERMISTOR, & WATER DISTRIBUTOR
WARNING
Electrical Shock Hazard
Plug into a grounded 3 prong outlet. Do not remove ground prong. Do not use an adapter. Do not use an extension cord. Failure to follow these instructions can
result in death, fi re, or electrical shock.
1. Unplug ice maker or disconnect power.
2. Open the ice maker door.
3. Cover or remove the ice from the storage bin.
4. Place a cloth in the drain hole to avoid hardware from falling inside.
5. Remove the two hex-head screws from the cutter grid cover and remove the cover.
Cutter Grid Cover
6. To remove the bin thermistor: a) Disconnect the bin thermistor connector
from the bottom of the control hous­ing.
b) Pull the bin thermistor out of the retain-
ing clamp and remove it.
Control Housing
Connector
Bin Thermistor
Retaining Clamp
7. To remove the cutter grid: a) Disconnect the cutter grid and bin
thermistor connectors from the bottom of the control housing.
b) Remove the two hex-head screws from
both sides of the cutter grid. The longer screw and white spacer are on the right side.
Cutter Grid Cover Screws
Cutter Grid Cover
4-2
Spacer Bracket (Left Side)
˝ Models
18
Bin Thermistor Connector
Cutter Grid Connector
Cutter Grid Screws
c) Slide the cutter grid forward and out of
the unit and place it on a work surface. Be careful not to scratch the ice maker liner.
d) Remove the spacer from the right cutter
grid bracket tab.
8. To remove the evaporator thermistor: a) Remove the cutter grid from the unit
(see step 7 on page 4-2 for the proce­dure).
b) Disconnect the evaporator thermistor
connector from the bottom of the control housing.
c) Remove the two hex-head mounting
screws from the water trough and pull the trough from the unit.
Cutter Grid
Spacer
e) Unsnap the two ice guides from the
cutter grid tabs. There should be a slight outward tilt after the guides are installed. Bend the metal tabs outward if necessary.
Cutter Grid Ice Guides
Control Housing
Water T rough Screws
Evap Thermistor Connector
Water T rough
d) Reach behind the accumulator, and
unclip the evaporator thermistor from the evaporator tubing and remove it.
Evaporator Thermistor
Bottom Of The Evaporator
4-3
Accumulator
Continued on the next page.
Loading...
+ 51 hidden pages