U-Line SP 18, ADA15IM, ULN-98, ULN-SS1095, U-CO1175 User Manual
...
Service Manual
2010
SP 18
ULN-95 Icemaker
ULN-98 Icemaker
ULN-SS1095 Icemaker
U-CO29F
U-CO29A
ULN-29R
U-1075BEV
U-1075WC
U-CO1175
BI-2115
ADA15IM
Entertain with U-Line Elegance
www.u-line.com
Section 1 - General Information
IMPORTANT
IMPORTANT
INTRODUCTION
Three generations of pride and quality manufacturing and
design improvements are built into all U-Line products. The
result: U-Line leads the market with innovative technology and
superior craftsmanship.
This manual contains specific instructions for servicing the ULine Products which include these models:
MODELS
SP18
ULN-95 Icemaker
ULN-98 Icemaker
SS-1095 Icemaker
U-CO29F
U-CO29A
ULN-29R
U-1075BEV
U-1075WC
U-CO1175
BI-2115
ADA15IM
POTENTIAL PROBLEMS WITH
HFC-134A
This service manual has been written to cover products
manufactured with HFC-134A. HFC-134A compressors
receive a synthetic based ester oil charge. The hygroscopic
(water attraction) property of ester oil is many times greater
than the mineral oils previously used with CFC-12. High
system moisture causes the formation of acids and alcohol
which can damage the compressor. Systems should not be left
open for more than fifteen (15) minutes at any time as
humidity from the air will enter the system. To ensure system
dehydration, the system should be pulled down to 100
microns and vacuum pump oil (mineral oil) must not be
allowed to enter the system.
Cleanliness of the system is extremely important. The
presence of residues (chlorinated or greasy residues, mineral
oil, or impurities) can lead to capillary tube restrictions, oil
return problems and compressor damage. Do not use flux on
brazed joints.
Check for the latest service related information at ULineService.com. The Technical Knowledge base is
continuously updated and can be accessed anytime. Each ULine product has a unique method of installation, but it is
consistent with U-Line’s methods and requirement. Follow
the installation guidelines for the U-Line product you are
installing.
1-1
Section 1 - General Information
TABLE OF CONTENTS
SECTION 1 - GENERAL INFORMATION
Introduction ..................................................................................................................................................................1-1
Potential Problems With HFC-134A.......................................................................................................................1-1
Safety Precautions .......................................................................................................................................................1-3
Safety Alert Definitions ....................................................................................................................................1-3
General Precautions .........................................................................................................................................1-3
U-Line Corporation Limited Warranty...................................................................................................................1-4
Product Liability Policy................................................................................................................................................1-5
Serial Number Format ................................................................................................................................................1-6
Warranty Claims Procedure......................................................................................................................................1-6
Proof of Purchase.........................................................................................................................................................1-6
Parts Listing....................................................................................................................................................................1-7
SECTION 2 - TROUBLESHOOTING
Customer Call Guide ..................................................................................................................................................2-1
Refrigeration System Diagnosis Guide....................................................................................................................2-2
Ice Maker Diagnosis Flow Chart...............................................................................................................................2-3
Troubleshooting ...........................................................................................................................................................2-4
SECTION 3 - SERVICE AND REPAIR
Refrigeration Systems..................................................................................................................................................3-1
Normal Vapor/Compression Cycle Refrigeration......................................................................................3-1
U-Line Frost Free Refrigeration System .......................................................................................................3-2
Compressor/Electrical Specifications.......................................................................................................................3-4
Ice Maker Operating Cycles ......................................................................................................................................3-6
Ice Maker Operating Cycles (Model U-CO29F)...................................................................................................3-8
Temperature Control Specifications .......................................................................................................................3-9
Limit Switch Specifications .......................................................................................................................................3-10
Replacing Ice Maker Assembly (CO29F Only)....................................................................................................3-11
Replacing Ice Maker Assembly (All Models Except CO29F)............................................................................3-11
SECTION 4 - PARTS
220 Volt Conversion List............................................................................................................................................4-1
Ice Maker Assembly Information..............................................................................................................................4-2
Model SP18 ....................................................................................................................................................................4-4
Model ULN-95 - BI95B, BI95WH, BCM95 ............................................................................................................4-6
Model ULN-95 - BI95BTP, WH95TP, SS95 ...........................................................................................................4-8
Model ULN-98 - BI98B, BI98WH, SS98................................................................................................................4-10
Model SS-1095 ............................................................................................................................................................4-12
Model U-CO29F.........................................................................................................................................................4-14
Model U-CO29A........................................................................................................................................................4-18
Model ULN-29R .........................................................................................................................................................4-20
Model U-1075BEV......................................................................................................................................................4-22
Model 1075WC..........................................................................................................................................................4-24
Model U-CO1175 ......................................................................................................................................................4-26
Model BI-2115.............................................................................................................................................................4-30
Model 402-BI2015......................................................................................................................................................4-32
SECTION 5 - WIRING DIAGRAMS
ULN-95, ULN-98, SP18 & SS-1095- 115 Volt........................................................................................................5-1
U-CO29F - 115 Volt....................................................................................................................................................5-1
U-CO29A, CO1175, BI2115, ADA15IM - 115 Volt ............................................................................................5-2
U-29R - 115 Volt ..........................................................................................................................................................5-2
1075BEV, 1075WC - 115 Volt..................................................................................................................................5-3
ULN-95, ULN-98, SP18 & SS-1095- 220 Volt........................................................................................................5-4
U-CO29A, CO1175, BI2115, ADA15IM - 220 Volt ............................................................................................5-4
1-2
Section 1 - General Information
IMPORTANT
IMPORTANT
DANGER
DANGER
WARNING
CAUTION
DANGER
DANGER
WARNING
WARNING
CAUTION
IMPORTANT
IMPORTANT
SAFETY PRECAUTIONS
PLEASE READ all instructions completely before
attempting to service the unit.
• Proper installation procedures must be followed if this
unit is being initially installed, or is moved to a new
location after being in service. An INSTALLATION
GUIDE for your unit, providing complete installation
information is available from U-Line Corporation directly,
and must be consulted before any installation is begun. ULine contact information appears on the rear cover of this
guide.
• This unit requires connection to a grounded (threeprong), polarized receptacle that has been placed by a
qualified electrician in accordance with applicable
electrical codes.
Safety Alert Definitions
Safety items throughout this guide are labeled with a Danger,
Warning or Caution based on the risk type:
Danger means that failure to follow this safety statement will
result in severe personal injury or death.
Warning means that failure to follow this safety
statement could result in serious personal injury or death.
Caution means that failure to follow this safety statement
may result in minor or moderate personal injury, property
or equipment damage.
General Precautions
• Altering, cutting of power cord, removal of power cord,
removal of power plug, or direct wiring can cause
serious injury, fire and/or loss of property and/or life
and will void the warranty.
• Never use an extension cord to connect power to the
unit.
• Always keep your working area dry.
Failure to use the Anti-Tip Kit when it is included with the
product can cause serious personal injury. The Anti-Tip
Kit must be installed before the unit is used.
• Use care when moving and handling the unit. Use gloves
to prevent personal injury from sharp edges.
• If your model requires defrosting, DO NOT use any type
of heater to defrost. Using a heater to speed up defrosting
can cause personal injury and damage to the inner lining.
• Do not lift unit by door handle.
• Never install or operate the unit behind closed doors. Be
sure front grille is free of obstruction. Obstructing free air
flow can cause the unit to malfunction and may void the
warranty.
• Failure to clean the condenser every three months can
cause the unit to malfunction. This could void the
warranty.
• Allow unit temperature to stabilize for 24 hours before
use.
• If your model requires defrosting, never use an ice pick or
other sharp instrument to help speed up defrosting. These
instruments can puncture the inner lining or damage
cooling unit.
• Use only genuine U-Line replacement parts. Imitation
parts can damage the unit, affect its operation or
performance and may void the warranty.
Use this appliance for its intended purpose only and follow
these general precautions along with those listed throughout
this guide:
RISK OF CHILD ENTRAPMENT. Before you throw away your
old refrigerator or freezer, take off the doors and leave shelves
in place so that children may not easily climb inside.
SHOCK HAZARD - Electrical Grounding Required.
• Never attempt to repair or perform maintenance on
the unit until the electricity has been disconnected.
• Never remove the round grounding prong from the
plug and never use a two-prong grounding adapter.
1-3
Section 1 - General Information
U-LINE CORPORATION LIMITED WARRANTY
U-Line Corporation warrants each U-Line product to be free from defects in materials and workmanship
for a period of one year from the date of purchase; and warrants the sealed system (consisting of the
compressor, the condenser, the evaporator, the hot gas bypass valve, the dryer and the connecting tubing) in
each U-Line product to be free from defects in materials and workmanship for a period of five years from
the date of purchase. During the initial one-year warranty period for all U-Line products U-Line shall: (1) at
U-Lines option, repair any product or replace any part of a product that breaches this warranty; and (2) for
all Marine, RV and Domestic U-Line products sold and serviced in the United States (including Alaska and
Hawaii) and Canada, U-Line shall cover the labor costs incurred in connection with the replacement of any
defective part. During years two through five of the warranty period for the sealed system, U-Line shall: (1)
repair or replace any part of the sealed system that breaches this warranty; and (2) for all Marine, RV and
Domestic U-Line products sold and serviced in the United States (including Alaska and Hawaii) and Canada,
U-Line shall cover the labor costs incurred in connection with the replacement of any defective part of the
sealed system. All other charges, including transportation charges for replacements under this warranty and
labor costs not specifically covered by this warranty, shall be borne by you. This warranty is extended only
to the original purchaser of the U-Line product. The Registration Card included with the product should be
promptly completed by you and mailed back to U-Line or you can register on-line at www.ULineService.com.
The following are excluded from this limited warranty: installation charges; damages caused by disasters or
acts of God, such as fire, floods, wind and lightening; damages incurred or resulting from shipping, improper
installation, unauthorized modification, or misuse/abuse of the product; customer education calls; food loss/
spoilage; door and water level adjustments (except during the first 90 days from the date of purchase);
defrosting the product; adjusting the controls; door reversal; or cleaning the condenser.
If a product defect is discovered during the applicable warranty period, you must promptly notify either the
dealer from whom you purchased the product or U-Line at P.O. Box 245040, Milwaukee, Wisconsin 53224
or at 414-354-0300. In no event shall such notification be received later than 30 days after the expiration of
the applicable warranty period. U-Line may require that defective parts be returned, at your expense, to ULines factory in Milwaukee, Wisconsin, for inspection. Any action by you for breach of warranty must be
commenced within one year after the expiration of the applicable warranty period.
This limited warranty is in lieu of any other warranty, express or implied, including, but not
limited to any implied warranty of merchantability or fitness for a particular purpose;
provided however, that to the extent required by law, implied warranties are included but do
not extend beyond the duration of the express warranty first set forth above. U-Lines sole
liability and your exclusive remedy under this warranty is set forth in the initial paragraph
above. U-Line shall have no liability whatsoever for any incidental, consequential or special
damages arising from the sale, use or installation of the product or from any other cause
whatsoever, whether based on warranty (express or implied) or otherwise based on contract,
tort or any other theory of liability.
Some states do not allow limitations on how long an implied warranty lasts or the exclusion or limitation of
incidental or consequential damages, so the above limitations may not apply to you. This warranty gives you
specific legal rights, and you may also have other rights which vary from state to state.
1-4
Section 1 - General Information
PRODUCT LIABILITY POLICY
Field service technicians are authorized to make an initial assessment. If in the servicer’s judgment
the damage is the result of a product defect, the product would be removed and returned to U-Line in an
unaltered condition. The dealer would then be authorized to permanently replace the end-user’s product at
no cost to the end-user. Please call U-Line immediately at 800-779-2547 to initiate the RA and product exchange process.
If in the servicer’s judgment the damage is the result of installation issues (water
connection/drain, etc.), the consumer would be so notified and the correction would be made by the servicer
or installer without requiring removal of the product. Any claim for damages should be directed to the
original installer.
Any U-Line unit involved in an alleged property damage claim must remain unaltered and unrepaired,
for evaluation. No service or repairs should be performed on any unit suspected to be involved
in a property damage situation. If a unit has been altered or repaired in the field prior to ULine’s evaluation, any claim for damage may be declined.
If the unit in question is a U-Line CLR or CLRCO with a drain pump, both the unit and the drain pump
(regardless of the manufacturer) must be returned to U-Line Corporation.
To complete the damage claim process for the customer, please obtain the following and forward to
U-Line at onlineservice@U-Line.com, fax to 414-354-5696 or mail to the address below.
Pictures of the unit, installation and any alleged property damage.
Inquire when the problem first appeared, any prior problems with the product and provide a brief
description of the alleged damages.
To expedite the claim process, U-Line will need two damage repair estimates.
Reference the RA number and customer name when providing this information.
If a unit is returned to U-Line, this evaluation will take approximately ten business days. No field service
company is authorized to perform this evaluation. When a Return Authorization Number is issued,
and the unit has been boxed in a U-Line carton, U-Line should be contacted and then will make arrangements
for shipping, or designate a truck line to have the unit shipped freight collect.
If U-Line’s evaluation finds the unit, (or U-Line P60 pump) to be defective, causing the property damage, the
damage claim will be reviewed by the U-Line Customer Assurance Department.
If U-Line’s evaluation finds the unit not to be defective, does not repeat a failure or does not leak any water
from the U-Line unit or U-Line P60 pump, all claims for damage will be declined.
When a product evaluation is needed, it is the customer’s responsibility to assure that the unit is returned
for evaluation. If the customer fails to do so, or has the unit repaired in the field prior to U-Line’s evaluation,
any claim for damage will be declined.
8900 N. 55th St. • P.O. Box 245040
Milwaukee, WI 53224-9540
414/354-0300 • Fax: 414/354-7905
Website: www.u-line.com
Leaders In Quality Undercounter Refrigeration
1-5
Section 1 - General Information
09 67167-12-0002
Year MonthShop
Order
Number
Factory
Internal
Control
Number
SERIAL NUMBER FORMAT
The serial number is divided into four segments. A typical
serial number is 089469-01-0002.
The first two digits of the first segment, 08, represents the
year the unit was made.
The next four digits of the first segment, 9469, represent the
shop order number. Order number 9469 is assigned for the
Model CLR2160 B-00 units.
The next two digit segment, 01, represents the month the unit
was made.
The last four digit segment, XXXX, is a factory internal
control number used at U-Line Corporation.
WARRANTY CLAIMS PROCEDURE
Occasionally the customer does not return their warranty cards. In
this case we use the date the unit was shipped to our distributor for
a beginning warranty date. This may cause the claim to be rejected
for a proof of purchase. If you want to check on a purchase date, you
may contact the U-Line Corporation Customer Assurance
Department at 1-800-779-2547. This will allow you to get a proof of
purchase, if needed, before you submit the claim.
At U-Line, parts and labor claims are paid separately. Included
in labor are freon and recovery charges, all other parts are
handled by the parts department. We require that some parts
be returned to us, so we may return them to our vendor. It
will be noted on your packing list if we require you to return
the part. If a part is to be returned please include a copy of the
packing list and a copy of your claim. If the part was purchased
at one of our part distributors, you must handle the part
warranty with that company. For labor payment please send a
readable copy of your claim to U-Line Corporation, P.O. Box
245040, Milwaukee WI, 53224-9540, or fax it to 414-354-
5696. Claims can also be filed on-line at www.ulineservice.com.
PROOF OF PURCHASE
Proof of Purchase and/or Proof of Install is an important part
of the warranty claim process. Sometimes it is difficult to
obtain a proper Proof of Purchase/Proof of Install for a
number of different reasons:
When submitting claims for warranty payment, please
follow these guidelines.
You can use any form you would normally use to bill your
customer (your own computer generated form, Narda, USA,
etc.). Claims can also be filed on-line at
www.u-lineservice.com.
The model and serial number MUST be on the claims. Claims
will not be paid without a model and serial number.
If you used a part in your repair, you MUST put the part
number, the invoice number and where the part came from.
Claims will be returned without this information.
If you work on more than one unit per service call please
submit a separate claim for each unit.
We track all defects through warranty claims, so please be
specific on what the repair was. If it is a system leak, please
specify where the leak was.
Please be sure the claim is legible. If the claim form cannot be
read, it will be returned, unpaid.
Remember: Door and water level adjustments are 90 day
warranties only.
If you are changing out a unit please supply the model and
serial number of both units (the unit being replaced and the
new unit) and the R.A. number.
• The customer does not have a copy (only the original).
• The customer has only their copy of the final Walk Through or
sign-off of new construction.
• Other valid reasons that prevent your technician from leaving the
job site with a suitable Proof of Purchase/ Proof of Install.
We understand the problem and have modified our Proof of
Purchase policy to help you in these situations.
Effective immediately, if a copy of the Proof of Purchase/Proof
of Install is not available at the site, the technician should
record the following information on the Labor Invoice:
• The name of the selling Dealer
• The date of purchase/installation
• The Order or Invoice number (if available)
• The type of document they saw, i.e. Store Receipt, Closing Papers,
Sign-Off of Building Permit, Final Walk Through, etc.
If we have this information on the Labor Invoice, and we have
the other information that is needed (correct Serial
Number, type of repair, time spent on repairs, etc.),
we will be able to process the invoice for you in a timely
manner.
1-6
Section 1 - General Information
PARTS LISTING
How to Order Replacement Parts
1. Refer to Service Parts and locate the illustration(s) for the model
you are servicing.
2. Locate the desired part to be serviced and note the item number
assigned to it.
3. Locate the item number within the parts list. Note the full
description and the corresponding part number. If this is for a
warranty unit, indicate and record the model and serial numbers.
4. When ordering parts, it will be necessary to supply Model
Number, Serial Number, Part Number, Part Description and in
some cases Color or Voltage.
All warranty parts will be shipped at no charge as long as
warranty status has been confirmed. If we require that a part
be returned to U-line, you will be informaed at the time the
order is placed. It will be noted on your packing list if we
require you to return a part or if you may field scrap it. If ULine requires a defective part to be returned, a prepaid
shipping label will be included with your new replacement
part. When returning parts enclose a copy of your packing list
and a copy of your labor claim, showing the model and serial
number, and tag or label the part with the nature of the defect.
Our warranty records may not match the customer's information. In
this case, a proof of purchase will be required. If you do not have the
proof of purchase at the time the order is placed, the part will be
sent net 15 days, charged to a Visa or MasterCard or COD if you
don't have an open account with U-Line Corporation. When the
proof of purchase is provided, we will credit your account (a check
will be sent if the part was sent COD).
5. Parts may be ordered on-line, by FAX or phone:
www.U-LineService.com
onlineparts@u-line.com
FAX Number (414) 354-7905
Phone Number (414) 354-0300 or (800) 779-2547;
REPLACEMENT PARTS: Use only genuine U-Line replacement
parts. The use of non-U-Line parts can reduce ice rate, cause water
to overflow from ice maker mold, damage the unit, and can void the
warranty.
1-7
Section 1 - General Information
This page intentionally left blank.
1-8
CUSTOMER CALL GUIDE
Section 2 - Troubleshooting
U-Line’s warranty does not cover customer education calls. It
has been reported that as high as 50% of all service calls
performed are customer education calls.
Concern Response
The unit is not cold enough. • Are you familiar with the factory temperature specifications for
• Is the door or drawers sealing properly? If the door or drawer is
• Has the door or drawers been left open?
• Is the condenser clean? U-Line’s warranty does not cover
• Is the unit behind closed doors or the vent restricted? The front
• Is the unit in an application of heavy usage? Heavy usage or
• Did you try adjusting the temperature to a colder level? Adjust
Temperature is too cold. • Check actual temperature versus set-point.
• Did you try adjusting the temperature to a warmer level? Adjust
The unit is frosting up. • Are you familiar with the defrost technology of your unit?
• Is the door or drawers sealing properly? If the door or drawer
• Has the door or drawers been left open?
• Is the unit in an application of heavy usage? Heavy usage or
The ice cubes are sticking together. • Have you tried to shake the ice bucket? If the ice sits without
• Is the door or drawers sealing properly? This could cause the ice
• Does the unit need to be defrosted?
Water is leaking out of the unit.
Have you checked the water connection to the unit? U-Line’s
The following guide has been developed to help answer frequently
asked questions. It can be used by persons scheduling service calls.
Things to consider before scheduling a service call:
your unit? Many factors can cause these temperatures to vary;
ambient temperature, application, amount of use (number of
times and length of time the door or drawers or opened and
closed), etc.
not sealed properly, it allows heat into the unit. U-Line’s
warranty is 90 days for door or drawer adjustments.
cleaning the condenser.
grille must be free of obstruction.
high ambient temperatures will cause a unit to frost up.
to a colder level. Be sure to allow 24 hours between
temperature control adjustments.
to a warmer level. Be sure to allow 24 hours between
temperature control adjustments.
is not sealing properly, it allows heat/humidity into the unit.
U-Line’s warranty is 90 days for door or drawer adjustments.
high ambient temperatures will cause a unit to frost up.
being used, it will tend to stick together. Shaking the bucket
will usually break the ice cubes apart. If the ice has been sitting
for a long time, you should consider discarding it and make a
fresh batch.
cubes to stick together.
warranty does not cover installation adjustments.
No ice or not enough ice. • Are you aware of the factory specifications for ice production?
• Is the ice maker bin arm down? When the arm is up, the ice
maker will not make ice.
• Is the door or drawers sealing properly? U-Line’s warranty is 90
days for door adjustments.
2-1
Section 2 - Troubleshooting
REFRIGERATION SYSTEM DIAGNOSIS GUIDE
System
Condition
Normal Normal Slightly below
Overcharge Higher than
Undercharge Lower than
Partial
Restriction
Complete
Restriction
No Gas 0 PSIG to 25” Room
Suction
Pressure
normal
normal
Somewhat
lower than
normal
vacuum
In deep
vacuum
Suction
Line
room
temperature
Very cold may
frost heavily
Warm-near
room
temperature
Warm - near
room
temperature
Room
temperature
(cool)
temperature
(cool)
Compressor
Discharge
Very hot Very hot Warm Cold Normal
Slightly warm
to hot
Hot Warm Warm Extremely
Very hot Top passes
Room
temperature
(cool)
Cool to hot Room
Condenser Capillary
Evaporator Wattage
Tub e
Hot to warm Cool Cold Higher than
Lower than
cold near
inlet - Outlet
below room
temperature
warm - Lower
passes cool
(near room
temperature)
due to liquid
Room
temperature
(cool)
temperature
(cool)
Room
temperature
(cool) or
colder
Room
temperature
(cool)
Room
temperature
(cool)
Extremely
cold near
inlet - Outlet
below room
temperature
backing up
No
refrigeration
No
refrigeration
Lower than
Lower than
Lower than
normal
normal
normal
normal
normal
2-2
ICE MAKER DIAGNOSIS FLOW CHART
UL183-11
DOES THE UNIT REFRIGERATE?
NO
Section 2 - Troubleshooting
INTERMITTENT
Sealed System Leak
Electrical Failure
Compressor Failure
Fan Motor Failure
Defrost System Failure
YES
Temperature Control Failure
Water Adjustment
Bin Switch Failure
EVERYWHERE
YES
DOES THE UNIT HARVEST ICE
IF THE EJECTOR BLADES ARE
MOVED BY HAND OR WITH A
WRENCH ?
NO
WHERE DO THE
EJECTOR BLADES
STOP?
AT 3:00
Low Voltage
Voltage Drop
Wiring
Ice Motor Failure
Hold Switch Failure
Limit Switch Failure
Binding Cam/Ejector
Water Switch Failure
AT 12:00
IS THERE VOLTAGE AT THE
SOLENOID VALVE TERMINALS
DURING HARVEST?
YES
NO
Mold Heater Failure
Solenoid Valve Failure
2-3
Section 2 - Troubleshooting
TROUBLESHOOTING
DANGER
Never attempt to repair or perform maintenance on the unit until the main electrical power has been disconnected from the
unit
Additional specific troubleshooting information can be found in Theory of Operation - Section 3, under the applicable model.
Cause Remedy
Will not eject ice (water frozen).
1. Control setting too cold.
2. Control inoperable (1-2 contacts open)
3. Bin switch inoperable.
4. Limit switch defective (open).
5. Ice maker assembly motor stalled.
6. Broken wire in ice maker circuit.
7. Water soaked cabinet insulation.
8. Dirty condenser.
Will not fill with water.
1. Water supply valve closed.
2. Water switch inoperable (open).
3. Solenoid valve inoperable.
4. Fill tube outlet frozen.
5. Broken wire in water fill circuit.
Will not stop making ice.
1. Adjust control warmer (counterclockwise).
2. Replace control.
3. Replace bin switch.
4. Replace limit switch.
5. Replace motor.
6. Repair or replace wiring.
7. Replace foamed cabinet assembly.
8. Clean condenser.
1. Open water supply valve.
2. Replace water switch.
3. Replace solenoid valve.
4. Defrost fill tube.
5. Repair or replace wiring.
1. Bin switch inoperable (closed).
2. Bin arm binding.
Water will not stop filling.
1. Water switch inoperable (closed).
2. Solenoid valve inoperable.
3. Stalled ice maker motor.
4. Temperature control inoperable. Ice maker is in
continuous harvest cycle (contacts 1-2 closed).
Ejector blades will not stop turning.
1. Control inoperable (1-2 contacts will not open).
2. Hold switch inoperable.
3. Broken wiring.
4. Short in mold heater.
1. Replace bin switch.
2. Lubricate bin arm pivot points or loosen bin arm lever screw.
1. Replace water switch.
2. Replace solenoid valve.
3. Replace motor.
4. Replace temperature control.
1. Replace control.
2. Replace hold switch.
3. Repair or replace wiring.
4. Replace heater.
2-4
Low ice production.
Section 2 - Troubleshooting
Cause Remedy
1. Control set too cold.
2. Fan motor stalled.
3. Ice cubes too large.
4. Dirty condenser.
5. Bypass valve stuck open (Frost Free units only).
Not freezing (compressor and fan motors
operating).
1. Little or no frost pattern on evaporator.
2. Bypass valve stuck open (Frost Free units only).
Not freezing (compressor not operating - fans
operating).
1. Relay inoperable.
2. Overload inoperable (open).
3. Compressor inoperable.
Not freezing (compressor and fans not
operating).
1. Power cord not plugged in.
2. On/Off switch in off position.
3. On/Off switch inoperable (open).
4. Hold switch inoperable (open).
5. Control inoperable (2-3 contacts open).
6. Broken wire in freeze circuit.
7. Ejector blades not in freeze position (12:00)
Compressor overheating.
1. Adjust control warmer (counterclockwise).
2. Replace fan motor.
3. Lower water fill adjustment.
4. Clean condenser.
5. Replace bypass valve (Frost Free units only).
1. Check for sealed system leak or restriction.
2. Replace bypass valve (Frost Free units only).
1. Replace relay.
2. Replace overload.
3. Replace compressor.
1. Plug in power cord.
2. Turn switch to on position.
3. Replace On/Off switch.
4. Replace hold switch.
5. Replace control.
6. Repair or replace wiring.
7. Manually advance ejector blades to the 12:00 position (test ice maker and
limit switch).
1. Condenser air flow restricted.
2. Condenser fan blade obstructed.
3. Condenser fan motor stalled.
4. Compressor inoperable.
Compressor will not stop operating.
1. Control set too cold.
2. Control inoperable (2-3 contacts will not open).
3. Control sensing bulb not sensing mold temperature.
4. Evaporator fan stalled (Frost Free units only).
1. Remove restriction (clean condenser and grille).
2. Remove blade restriction.
3. Replace fan motor.
4. Replace compressor.
1. Adjust control warmer (counterclockwise).
2. Replace control.
3. Fully insert bulb into ice maker tube. Rout bulb away from compressor
discharge tube.
4. Remove obstruction or replace motor.
2-5
Section 2 - Troubleshooting
Cause Remedy
Water leak (under unit).
1. Water supply line leaking at solenoid valve inlet.
2. Water line leaking at solenoid valve outlet.
3. Water line leaking at fill tube.
4. Defrost drain line not in drain pan.
5. Crack in water line.
Water leak (inside unit).
1. Ice maker assembly fill cup obstructed.
2. Fill ice cup and fill tube out of alignment.
3. Water level too high.
4. Defrost drain plugged (Frost Free units only).
Excessive frost buildup.
1. Door gasket not sealing properly.
2. Door out of alignment.
3. Water soaked cabinet insulation.
4. Light stays on when door is closed.
Noisy.
1. Copper refrigeration tube touching cabinet.
2. Fan blade touching shroud.
3. Fan blade obstruction (wiring, foam insulation,
packaging material).
Ice buildup in drain trough or drainage problem.
1. Tighten fitting or replace fitting gasket and/or fitting.
2. Replace water line and fitting.
3. Tighten clamp or replace fill tube assembly.
4. Position drain line in drain pan.
5. Replace water line.
1. Remove obstruction.
2. Align fill tube and fill cup.
3. Adjust water level.
4. Ice in drain trough (Frost Free units only) (see below).
1. Adjust door hinges or replace door gasket.
2. Adjust door hinges.
3. Replace foamed cabinet assembly.
4. Repair or adjust light bracket.
1. Carefully adjust tubing.
2. Adjust fan mounting or shroud.
3. Remove obstruction.
1. Obstructed drain cup or tube.
2. Drain trough heater failed (Frost Free units only).
3. Kinked drain tube.
4. Drain trough spout and drain cup not aligned.
Unit will not defrost (Frost Free units only).
1. Bypass coil inoperable.
2. Defrost timer inoperable.
3. Bypass valve inoperable.
Fresh food temperature too cold.
1. Temperature control set too cold.
2. Bin/Freezer door not closing.
3. Ice bucket not fully inserted.
1. Clear obstruction.
2. Replace drain trough heater (Frost Free units only).
3. Reroute drain tube.
4. Align drain trough and drain cup.
1. Replace bypass valve.
2. Replace defrost timer.
3. Replace bypass valve.
1. Adjust control to warmer setting (counterclockwise).
2. Adjust or replace door.
3. Check for ice behind bucket and push ice bucket in place.
2-6
Section 3 - Service and Repair
REFRIGERATION SYSTEMS
Normal Vapor/Compression Cycle
Refrigeration
• Refrigerant is pumped from the compressor to the
condenser as a high pressure, high temperature vapor.
• As the refrigerant cools in the high pressure condenser,
the vapor condenses to liquid. During this phase change, a
great amount of heat is rejected with the help of the
condenser fan.
• The liquid then flows to the dryer where is strained and
filtered.
• From the dryer, the refrigerant flows through the capillary
tube which meters the liquid refrigerant to the evaporator.
The pressure of the refrigerant is reduced to the
evaporating, or low side, pressure.
• The reduction of pressure on the liquid refrigerant causes
it to boil, or vaporize, until it reaches saturation
temperature. As the low temperature refrigerant passes
through the evaporator coil, it continues to absorb a lot of
heat, causing the boiling action to continue until the
refrigerant is completely vaporized. It is during this phase
change that most heat is absorbed (the cooling takes place)
in the refrigerator.
• The refrigerant vapor leaving the evaporator travels
through the suction line to the compressor inlet. The
compressor takes the low pressure vapor and compresses
it, increasing both pressure and temperature. The hot high
pressure gas is pumped out the discharge line and into the
condenser. The cycle then repeats
.
CONDENSER
COMPRESSOR
DRYER
EVAPORATOR
CAPILLARY TUBE
UL183-1
Figure 1. Normal Vapor/Compression Cycle Refrigeration System
3-1
Section 3 - Service and Repair
Frost Free Refrigeration
COOLING MODE
• Bypass solenoid closed.
• Evaporator fan operating.
• Refrigerant flows through capillary tubes.
• Normal vapor/compression cycle refrigeration (see page 3-
1).
COMPRESSOR
CONDENSER
DRYER
FLOW WHEN SOLENOID
VALVE IS CLOSED
DEFROST MODE
• Bypass solenoid valve open.
• Refrigerant flows through bypass system.
• Vapor flows from condenser to evaporator without a
phase change.
• Drain heater on (U-CO29F only).
EVAPORATOR
CAPILLARY TUBE
FLOW WHEN SOLENOID
VALVE IS OPEN
SOLENOID VALVE
Figure 2. Frost Free Refrigeration System.
•
ULIN_0369_A
3-2
Air flow in at
n
evaporator blade
Air flow out at
evaporator outlet
Section 3 - Service and Repair
Air passes though
fin tube evaporator
Condensate drains down past the
evaporator, into drain pan, and into
condensate pan through drain hose. The
drain trough is warmed during defrost by
contact with evaporator fins. On U-CO29F
model, drain trough is also warmed by drai
heater attached to the drain pan.
Figure 3. Frost Free Air Flow
3-3
Section 3 - Service and Repair
UL183-3
EMI ER
UL183-3.1
COMPRESSOR/ELECTRICAL
SPECIFICATIONS
Compressor Pins
To measure start winding resistance, measure across the C-S
pins.
To measure run winding resistance, measure across the
C-R pins. These pins should never measure any resistance to
ground. This would indicate a shorted compressor.
OVERLOAD PROTECTOR
Models ULN-95, ULN-98, SP18, U-CO29A, U-CO1175,
BI2115, SS-1095 - Figure 4
EMI30HER Start winding resistance28 OHMS
EMI30HER Run winding resistance8 OHMS
SD39 Start winding resistance11 OHMS
SD39 Run winding resistance5 OHMS
EMI50HER Start winding resistance12 OHMS
EMI50HER Run winding resistance4 OHMS
SD51 Start winding resistance5 OHMS
SD51 Run winding resistance5 OHMS115 Volt Ice maker
heater resistance80 OHMS
115 Volt Water valve coil resistance335 OHMS
C
R
STARTING RELAY
S
MODEL U-CO29F - Figure 5
EMU45HSC Start winding resistance5.60 OHMS
EMU45HSC Run winding resistance6.70 OHMS
RELAY COVER
Figure 4. Electrical Relay and Overload Protector
Models SP18, ULN-95, ULN-98, U-CO29A, U-CO1175, BI2115,ADA15IM, & SS-1095
115 Volt Ice maker heater resistance80 OHMS
115 Volt Water valve coil resistance335 OHMS
115 Volt Drain pan heater630-661 OHMS
OVERLOAD PROTECTOR
STARTING RELAY
C
S
R
3-4
RELAY COVER
Figure 5. Electrical Relay and Overload Protector
Model U-CO29F
CAPACITOR
MODELS U-1075BEV, U-1075WC, 29R- Figure 6
UL183-3.1
EMI30HER Start winding resistance21.2 OHMS
EMI30HER Run winding resistance7.9 OHMS
OVERLOAD PROTECTOR
STARTING RELAY
Section 3 - Service and Repair
C
R
S
RELAY COVER
Figure 6. Electrical Relay and Overload Protector
Models U-1075BEV, U-1075WC, 29R
CAPACITOR
3-5
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