U-Line CLRCO2075 User Manual 3

Service and Parts Manual

Supplement

For Model

CLRCO2075

U-Line Corporation U-Line Corporation

8900 North 55th Street PO Box 245040

Milwaukee, WI 53223 Milwaukee, WI 53224-9540

www.U-LineService.com

Phone [phone] • FAX [phone]

Service & Parts Tech Lines Phone [phone] • FAX [phone]

R

INTRODUCTION

2

Design ■Features ■Performance

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 U-Line Échelon CLRCO2075.

Potential Problems With HFC-134A

This Service Manual has been written to cover product manufactured with HFC-134a. HFC-134A compres­sors will be received with a synthetic based ester oil charge. The hygroscopic (water attraction) property of
ester oil is many times greater than that of 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 system. To
assure 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 will be 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. Flux must not

be used on brazed joints.

INTRODUCTION

3

Design ■Features ■Performance

SERIAL NUMBER FORMAT

The serial number is divided into four segments. A typical serial number is 035497-03-0004.

The first two digits of the first segment, 03, represents the year the unit was made.

The next four digits of the first segment, 5497, represents the shop order number. Order number 5497 is
assigned for the Model CLRCO Black_00 units.

The second two digit segment, 03, represents the month the unit was made.

The third four digit segment, XXXX, is a factory internal control number used at U-Line Corporation.

035497-01-XXXX

Year

Shop
Order
Number

Month

Factory Internal
Control Number

INTRODUCTION

4

Design ■Features ■Performance

NOTES

INTRODUCTION

5

Design ■Features ■Performance

TABLE OF CONTENTS

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Serial Number Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Warranty Claims Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Leveling and Installation Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Gravity Drain Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Connecting a Drain Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Self-Cleaning Cycle Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Interior Storage Bin Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Principles of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Thermistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

CLRCO2075 Control Board Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Refrigeration System Diagnosis Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Ice Thickness Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

CLRCO2075 Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Parts Listing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

CLRCO2075 Model Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

GENERAL INFORMATION

6

Design ■Features ■Performance

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-Line’s 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.U-LineService.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 23220, Milwaukee, Wisconsin 53223
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
U-Line’s 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-Line’s 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.

GENERAL INFORMATION

7

Design ■Features ■Performance

WARRANTY CLAIMS PROCEDURE

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.).

The model and serial number MUST be on the claims. Claims will not be paid without a model and serial
number.

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.

U-Line will not cover part or labor claims for the replacement of a complete ice maker assembly. All ice
maker parts are available as replacement parts and are stocked in our inventory. Remember: we do not
pay customer education calls. 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.

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 a copy of the Proof of Purchase/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 (cor-
rect Serial Number, type of repair, time spent on repairs, etc.), we will be able to process the invoice for
you in a timely manner.

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, for warranty payment.

8

Design ■Features ■Performance

SAFETY PRECAUTIONS

Do not attempt to service or repair the unit until you have read the entire procedure. Safety items through­out this manual are labeled with Warning or Caution.

GENERAL INFORMATION

Warning means that failure to follow this safety statement may result in extensive product
damage, serious personal injury, or death.

!

WARNING

!

Caution means that failure to follow this safety statement may result in minor or moderate
personal injury, property or equipment damage.

!

DANGER: Risk of child entrapment. Before you throw away an old refrigerator or freezer:
Take off the doors, leave shelves in place so that children may not easily climb inside.

!

WARNING

!

• Never attempt to repair or perform maintenance on the unit until the electricity has been
disconnected.

• 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.

!

WARNING

!

• Do not lift unit by door handle.

• Never use an ice pick or other sharp instrument to help speed up defrosting. These
instruments can puncture the inner lining or damage the cooling unit.

• Failure to clean the condenser every three months can cause the unit to malfunction. This
could void the warranty.

• Never install 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.

!

9

Design ■Features ■Performance

SERVICING

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.

Specifications

FF7.5HBK Compressor Start Winding: 11.2 OHMS
FF7.5HBK Compressor Run Winding: 2.2 OHMS

Water Valve Coil Resistance: 280 OHMS

Bypass Coil Resistance: 380 OHMS

Pump Motor Winding Resistance: 71.5 OHMS

OVERLOAD PROTECTOR

RS

C

STARTING RELAY

RELAY COVER

CLRCO036

10

Design ■Features ■Performance

LEVELING AND INSTALLATION REQUIREMENTS

It is extremely important that the unit is level. If it is not
level, the ice mold will not fill evenly. This can cause a
reduction in ice rate, uneven sized cubes or water spilling
into the storage area which will cause the ice in the bin to
melt prematurely. See Figure A.

Remember the floor surrounding a drain has a tendency to
slope towards the drain.

Leveling the Unit

1. Use a level to check the icemaker from front to back and from side to side. See Figure B. Use a level to
check the levelness of the icemaker from front to back and from side to side by placing a level on the
inside edge and along the door seal edge for built-in installation. See Figure B.

2. If the icemaker is not level, adjust the feet on the
corners of the unit as necessary. See Figure C.

3. Check after each adjustment and repeat the previous
steps as necessary until the unit is level.

Installation Requirements

• The unit may be built into a cabinet. There is no minimum clearance requirement for the top, left or
right sides of the unit.

• The location must allow enough clearance for water, drain, and electrical connections in the rear of
the unit.

• The location must not obstruct air flow to the front of the unit.

SERVICING

Figure A

CLRCO029

Figure B

DWR005

RAISE

LOWER

Figure C

UL307

FRONT SIDE

CLRCO006

11

Design ■Features ■Performance

GRAVITY DRAIN INSTALLATION

These guidelines must be followed when installing drain lines to prevent water from flowing back into the
ice maker storage bin and potentially flowing onto the floor causing water damage:

• Drain lines and fittings must have a 5/8" inside diameter.

• Drain lines must have a 1" drop per 48" of run (1/4" per foot) and must not create traps.

• The floor drain must be large enough to accommodate drainage from all drains.

• Insulate the bin drain line to prevent condensation.

Be sure to follow these guidelines to prevent water backing up into the storage bin.

Below are examples of gravity drain line installations. If a trap is in the drain line, the drain line must be
vented to assure proper draining. Without the vent, water will backup until enough pressure builds up to
force the water past the trap. Water may backup into the ice bin before the amount of pressure needed is
achieved. Water in the storage bin will cause the ice in the bin to melt prematurely.

The customer’s complaint will be slow ice production. The ice that has been made is melting
prematurely because water is backing up in the ice bin.

FROM ICE MAKER TO FLOOR DRAIN

1. Normal Drain. Proper Drainage
Pitched from ice maker
at least 1/4" per foot.

2. With Trap. Poor Drainage
Poor drainage.
Water backs up in drain line.

3. With Trap and Vent. Proper Drainage
Vent assures proper drainage.

Examples of Gravity Drain Installations

SERVICING

Plumbing installation must observe all state and local codes.

!

UL306

12

Design ■Features ■Performance

CONNECTING A DRAIN PUMP

If a gravity drain connection is not available, U-Line strongly recommends the use of the U-Line P60 drain
pump. If your CLRCO2075 is not equipped with a factory installed pump, a P60 drain pump is available
through your Dealer, or direct from U-Line. If a pump other than the U-Line P60 drain pump is to be used,
it must meet the following specifications:

• It must be UL listed and have a UL listed, 120 VAC, 3-wire grounded power cord.

• Overall maximum outside dimensions of 8-3/4" wide x 5-3/4" deep x 7-3/4" high.

• Minimum flow rate of 15 gallons per hour at 10 feet of lift.

• It must have a sealed sump which does not allow water leakage in the case of a power outage, restricted
drain or pump failure.

• It must have a check valve in the discharge line to prevent waste water return to the pump.

• It must have an overflow protection control which will shut off power to the ice maker in the event of
a pump failure.

• Operating temperature range of 50°F to 110°F (10°C to 40°C).

If the CLRCO2075 is not equipped with a P60 drain pump or an equivalent drain pump, severe damage
and costly repair could result in the event of a power outage, restricted drain or pump failure.

Plumbing installation must observe all state and local codes. All water and drain connections
MUST BE made by a licensed/qualified plumbing contractor. Failure to follow recommendations
and instructions may result in damage and/or harm.

!

SERVICING

13

Design ■Features ■Performance

SERVICING

SELF-CLEANING CYCLE INSTRUCTIONS

To maintain operational efficiency, clean unit every six months (depending on water conditions more or
less frequent cleaning may be necessary). If the ice maker requires more frequent cleaning, consult a quali­fied plumber to test the water quality and recommend appropriate treatment. Use only U-Line Ice Machine
Cleaner (part number 41978).

1. Remove perishables from the refrigerator.

2. Set the cycle selector switch (located in the RH side of the grille) to OFF.
Allow the ice to melt off of the evaporator.

3. Remove all ice from the storage bin.

4. Remove inside front cover by gently pulling away from sidewall.
See Figure A.

5. Remove the overflow tube by lifting it up while using a slight back and
forth motion to loosen it from the drain hole. See Figure B. The water in
the reservoir will flow down the drain.

6. Replace the overflow tube after all the water has been drained from the
reservoir.

7. Move the cycle selector switch to the CLN position.

8. When water begins to flow over the evaporator, approximately three
minutes, add one packet of U-Line Ice Machine Cleaner to the reservoir.

9. Reinstall inside front cover.

10. When the self cleaning process stops, approximately 45 minutes, it may
be desirable to clean the storage bin. See INTERIOR STORAGE BIN

CLEANING.

11. Move the cycle selector switch to the ON position to resume ice
production.

12. Make sure the drain system is working properly and the drain hose is not
pinched or kinked. Pour one gallon of cool, fresh water into the ice bin.
The water should drain freely. If your CLRCO2075 is equipped with a
drain pump, the pump should drain the ice bin.

Use only U-Line Ice Machine Cleaner (part number 41978). It is a violation of Federal law
to use this solution in a manner inconsistent with its labeling. Use of any other cleaner can
ruin the finish of the evaporator and will void the warranty. Read and understand all labels
printed on the package before use. Ice machine cleaner is used to remove Lime scale and
other mineral deposits. Refer to the following steps for mineral deposit removal.

!

UL208

FRONT COVER

CLRCO012

OVERFLOW

Figure A

Figure B

Ice production after the first harvest may take longer after Self Cleaning Cycle since the
refrigeration portion will take precedence over producing ice to protect any perishables.
Once the refrigerator reaches a set temperature, ice making will resume to normal.

NOTE

14

Design ■Features ■Performance

INTERIOR STORAGE BIN CLEANING

1. Disconnect power from the ice maker.

2. Remove any ice from the storage bin.

3. Wipe down the storage bin with a solution of non-abrasive mild soap or detergent and warm water.
Rinse with clean water. Sanitize the bin with a solution of one tablespoon of bleach and one gallon of
water. Rinse thoroughly with clean water.

4. Check that all drain connections are in place.

5. Reconnect power to the unit.

6. Make sure the drain system is working properly and the drain hose is not pinched or kinked. Pour one
gallon of cool, fresh water into the ice bin. The water should drain freely. If your CLRCO2075 is
equipped with a drain pump, the pump should drain the ice bin.

PRINCIPLES OF OPERATION

The U-Line Model CLRCO2075 combines the best of Échelon refrigeration and clear ice making capabili­ties into a single unit. A state-of-the-art microprocessor based controller simplifies operation and trou­bleshooting. There are four primary modes of operation:

1. Ice Making and Refrigeration

2. Ice Making and No Refrigeration

3. Refrigeration and No Ice Making

4. Ice Harvest (No Refrigeration Possible)

In addition, there are four sub modes of operation:

5. All Satisfied

6. Water Fill - No Refrigeration Required

7. Cleaning (No Refrigeration Possible)

8. Water Fill with Refrigeration Required

Review the following notes for general information before reading the schematics.

These are some additional general notes and exceptions:

1. The controller has a four-minute compressor minimum off-cycle regardless of thermistor status, for

compressor protection and cycling.

2. When making ice, the controller reads liquid line temperature four minutes into the ice making cycle

to determine the length of that ice making cycle and subsequent harvest length.

3. Once an ice making cycle is initiated, it will continue through to harvest regardless of the bin sensor.

4. There is a three-minute water fill cycle when the unit is turned on, or following a cleaning cycle. If

the refrigerator is warmer than set point (which it probably will be on initial installation) there will be
cooling on the refrigerator side as shown in Mode 8. If the refrigerator is below set point for any rea­son (recent operation, cold product, etc.), the refrigerator side will not run and the operation will be
as shown in Mode 6.

5. In order to maintain adequate refrigerator temperature, the unit will sometimes run in the refrigeration

only mode, as shown in Mode 3, even if the ice bin sensor is calling for ice. At the end of each ice
harvest, the controller checks the refrigerator sensor and if it is warmer than the higher of 42°F, or the
set point, it will go into refrigeration only mode. If it reaches 42°F and the set point is lower, it will
continue to refrigerate and start an ice making cycle. If it reaches a higher set point (say 45°F), it will
switch to ice making only mode. There is no fill cycle when ice making re-initiates in this case,
because the bin sensor has not been satisfied.

SERVICING

15

Design ■Features ■Performance

6. When the initial three-minute fill cycle is complete, the unit will enter ice making and refrigeration
mode (1) if the bin is empty or below the sensor. However, after the first slab of cubes is harvested,
the controller will follow the logic defined in #5 above and realizing the refrigerator is too warm, will
continue in refrigeration only mode (3) until the requirement is satisfied. Thus, upon start-up, the user
will see one slab of ice dropped in about 30 minutes, and then there will be no more ice until the
refrigerator reaches 42°F or a higher set point (this may be 2 to 3 hours depending on ambient condi­tions).

7. There will also be a water fill cycle after the ice bin has been “full” and then calls to make ice again.
This can occur when the refrigerator side is off as shown in Mode 6, or when it is on, which is shown
in Mode 8. If the refrigerator side is on, when the fill cycle initiates, it will remain on until the fill
cycle is completed, even if the refrigerator sensor is satisfied.

8. The controller has a four degree differential designed into it for the refrigerator sensor, such that when
it is set to 38°F, the refrigerator will cool until the refrigerator sensor reads 36°F and will not re-initiate
refrigerator cooling until the sensor reaches 40°F. So someone monitoring actual temperature (by
pressing WARMER momentarily) may see the refrigerator off when the temperature is a degree
warmer than set point, or refrigerator on when it is a degree below set point. Refer to Controller.

9. The controller is equipped with two error indicator LEDs on the display module:

• One LED dot flashes to indicate the P60 drain pump is, or has been, restricted. If the pump or line

clears itself, the unit will re-initiate operation, but the light will stay on until the unit is unplugged
or power to the unit is broken. In the event that the P60 pump shuts down the clear ice maker
operation the refrigerator side will continue to operate normally.

• The other LED dot indicates that one or more of the thermistors has failed or been out of limits.

If the bin sensor or liquid line sensor fails, the refrigerator will continue to operate, but ice making

will be shut down. If the refrigerator sensor fails, the refrigerator will be shut down, but the
ice maker will continue to operate. A sensor would normally fail by opening up (no continuity) or
shorting (no resistance). Refer to CONTROLLER for more information.

10. There is no high limit cut-out on this unit, however, if the liquid line sensor were to go out of range
(approximately 185°F), the thermistor error indicator light will flash, and the ice maker side of the unit
will shut down. The refrigerator will continue to run. When the temperature of the liquid falls back in
range, the unit will re-initiate operation, even though the error indicator light stays on. The unit will
not normally experience this condition up to 110°F, but conditions such as door openings, heavy
loading, restricted airflow, dirty condenser, or direct sun light may contribute to reaching this mode.

11. In both modes, unit on, but no need for ice or refrigeration, and Mode 7, clean cycle. The evaporator
bypass valve coil is energized, even though the REF VALVE relay is off. This is a double throw relay,
so either the refrigeration valve or refrigeration bypass valve coils are always energized, but they can
never both be energized at the same time.

12. In most applications, the refrigerator evaporator will remain frost-free by clearing itself between refrig­eration cycles. However, because there is no thermostat bulb directly on the evaporator as in the
other U-Line refrigerators, the controller runs a thirty-minute refrigerator off-cycle, for every 12 hours
of clock time. This means the refrigerator side of the unit will not cool during that period even if the
refrigerator sensor is calling for cooling. The ice maker side can make ice if needed (same operation
as Mode 2, except refrigerator sensor may not be satisfied), or can also be shut down if the bin is full
(Mode 5).

SERVICING

16

Design ■Features ■Performance

SEQUENCE OF OPERATION

Mode 1: Ice Making and Refrigeration

SERVICING

NO REFRIGERATION FLOW

REFRIGERATION FLOW

HIGH PRESSURE

LOW PRESSURE

TRANSITIONAL PRESSURE

IN CAPILLARY TUBE

H

L

C

L

L

REF VALVE ­REFRIGERATION
VALVE (LOWER)

ON

REF VALVE ­REFRIGERATION
BYPASS
VALVE (UPPER)

L

REFRIGERATOR

EVAPORATOR

L

L

FAN ­CONDENSER
FAN

ON

ICE MAKER EVAPORATOR

H2O IN -

WATER

SUPPLY

H2O PUMP -

WATER

CIRCULATION PUMP

CONDENSER

ON

C

OFF

H

DRYER

OFF

HOT GAS ­HOT GAS
BYPASS
VALVE

C

C

OFF

CAPILLARY
TUBE

L

ACCUMULATOR

L

L

SUCTION
TUBE

L

H

DISCHARGE
TUBE

L

L

C

ON

COMP - COMPRESSOR

C

C

Bin sensor: Calling for ice
Refrigerator sensor: Calling for cooling
Liquid line sensor: Determines length of ice cycle & harvest

RELAY
STATUS ON

COMP

H2O IN REF VALVE*ONFAN
OFF

ON

*Double throw relay: ON: REF valve open, REF bypass valve closed

H2O PUMP
ON

HOT GAS
OFF

CLRCO040

17

Design ■Features ■Performance

SERVICING

Mode 2: Ice Making and No Refrigeration

NO REFRIGERATION FLOW

REFRIGERATION FLOW

HIGH PRESSURE

LOW PRESSURE

TRANSITIONAL PRESSURE

IN CAPILLARY TUBE

H

L

C

L

REF VALVE ­REFRIGERATION
VALVE (LOWER)

OFF

REF VALVE ­REFRIGERATION
BYPASS
VALVE (UPPER)

REFRIGERATOR

EVAPORATOR

FAN ­CONDENSER
FAN

ON

ICE MAKER EVAPORATOR

H2O IN -

WATER

SUPPLY

H2O PUMP -

WATER

CIRCULATION PUMP

CONDENSER

ON

C

OFF

H

DRYER

L

ON

HOT GAS ­HOT GAS
BYPASS
VALVE

C

C

OFF

L

ACCUMULATOR

L

L

SUCTION
TUBE

L

H

DISCHARGE
TUBE

CAPILLARY
TUBE

C

ON

COMP - COMPRESSOR

C

C

Bin sensor: Calling for ice
Refrigerator sensor: Satisfied (no call for cooling)
Liquid line sensor: Determines length of ice cycle & harvest

RELAY
STATUS ON

COMP

H2O IN REF VALVE*ONFAN
OFF

OFF

*Double throw relay: OFF: REF valve closed, REF bypass valve open

H2O PUMP
ON

HOT GAS
OFF

CLRCO041

18

Design ■Features ■Performance

SERVICING

Mode 3: Refrigeration and No Ice Making

NO REFRIGERATION FLOW

REFRIGERATION FLOW

HIGH PRESSURE

LOW PRESSURE

TRANSITIONAL PRESSURE

IN CAPILLARY TUBE

H

L

C

L

L

REF VALVE ­REFRIGERATION
VALVE (LOWER)

ON

REF VALVE ­REFRIGERATION
BYPASS
VALVE (UPPER)

L

REFRIGERATOR

EVAPORATOR

L

L

FAN ­CONDENSER
FAN

ON

ICE MAKER EVAPORATOR

H2O IN -

WATER

SUPPLY

H2O PUMP -

WATER

CIRCULATION PUMP

CONDENSER

OFF

C

OFF

H

DRYER

OFF

HOT GAS ­HOT GAS
BYPASS
VALVE

C

C

OFF

L

ACCUMULATOR

L

L

SUCTION
TUBE

L

H

DISCHARGE
TUBE

CAPILLARY
TUBE

L

L

C

ON

COMP - COMPRESSOR

C

C

Bin sensor: Satisfied - bin full
Refrigerator sensor: Calling for cooling
Liquid line sensor: Not applicable

RELAY
STATUS ON

COMP

H2O IN REF VALVE*ONFAN
OFF

ON

*Double throw relay: OFF: REF valve closed, REF bypass valve open

H2O PUMP
OFF

HOT GAS
OFF

CLRCO042

19

Design ■Features ■Performance

SERVICING

Mode 4: Ice Harvest (No Refrigeration Possible)

NO REFRIGERATION FLOW

REFRIGERATION FLOW

FLOW DIRECTION

UNIFORM PRESSURE

DURING HOT-GAS

HARVEST MODE

ICE MAKER EVAPORATOR

H2O IN -

WATER

SUPPLY

H2O PUMP -

WATER

CIRCULATION PUMP

OFF

ON

REF VALVE ­REFRIGERATION
VALVE (LOWER)

OFF

REF VALVE ­REFRIGERATION
BYPASS
VALVE (UPPER)

ON

REFRIGERATOR

EVAPORATOR

ACCUMULATOR

SUCTION
TUBE

HOT GAS ­HOT GAS
BYPASS
VALVE

FAN ­CONDENSER
FAN

OFF

DRYER

CONDENSER

Liquid line sensor: Determines length of ice cycle & harvest

RELAY
STATUS ON

COMP

H2O IN REF VALVE*
ON

OFF

FAN
OFF

*Double throw relay: OFF: REF valve closed, REF bypass valve open

ON

DISCHARGE
TUBE

CAPILLARY
TUBE

COMP - COMPRESSOR

H2O PUMPONHOT GAS
OFF

ON

CLRCO043

20

Design ■Features ■Performance

Mode 5: All Satisfied

SERVICING

NO REFRIGERATION FLOW

UNIFORM PRESSURE

DURING SATISFIED MODE

ICE MAKER EVAPORATOR

H2O IN -

WATER

SUPPLY

OFF

REF VALVE ­REFRIGERATION
VALVE (LOWER)

OFF

REF VALVE ­REFRIGERATION
BYPASS
VALVE (UPPER)

ON

REFRIGERATOR

ACCUMULATOR

EVAPORATOR

H2O PUMP -

FAN ­CONDENSER
FAN

OFF

CIRCULATION PUMP

WATER

CONDENSER

OFF

HOT GAS ­HOT GAS
BYPASS
VALVE

DRYER

Bin sensor: Satisfied - bin full
Refrigerator sensor: Satisfied (no call for cooling)
Liquid line sensor: Not applicable

RELAY
STATUS OFF

COMP

H2O IN REF VALVE*
OFF

OFF

FAN
OFF

*Double throw relay: OFF: REF valve closed, REF bypass valve open

OFF

DISCHARGE
TUBE

CAPILLARY
TUBE

H2O PUMP
OFF

SUCTION
TUBE

OFF

COMP - COMPRESSOR

HOT GAS
OFF

CLRCO044

21

Design ■Features ■Performance

Mode 6: Water Fill - No Refrigeration Required

SERVICING

REF VALVE ­REFRIGERATION

NO REFRIGERATION FLOW

UNIFORM PRESSURE

DURING FILL MODE

ICE MAKER EVAPORATOR

H2O IN -

WATER

SUPPLY

ON

VALVE (LOWER)

OFF

REF VALVE ­REFRIGERATION
BYPASS
VALVE (UPPER)

ON

REFRIGERATOR

ACCUMULATOR

EVAPORATOR

H2O PUMP -

OFF

COMP

RELAY

FAN ­CONDENSER
FAN

STATUS OFF

CIRCULATION PUMP

WATER

CONDENSER

H2O IN REF VALVE*
ON

OFF

OFF

HOT GAS ­HOT GAS
BYPASS
VALVE

DRYER

FAN
OFF

*Double throw relay: OFF: REF valve closed, REF bypass valve open

OFF

DISCHARGE
TUBE

CAPILLARY
TUBE

H2O PUMP
OFF

SUCTION
TUBE

OFF

COMP - COMPRESSOR

HOT GAS
OFF

CLRCO045

Design ■Features ■Performance

Mode 7: Cleaning (No Refrigerator Possible)

SERVICING

22

REF VALVE ­REFRIGERATION

NO REFRIGERATION FLOW

UNIFORM PRESSURE

DURING FILL MODE

ICE MAKER EVAPORATOR

H2O IN -

WATER

SUPPLY

ON/OFF

VALVE (LOWER)

OFF

REF VALVE ­REFRIGERATION

BYPASS
VALVE (UPPER)

ON

REFRIGERATOR

ACCUMULATOR

EVAPORATOR

H2O PUMP -

OFF

COMP

RELAY

FAN ­CONDENSER
FAN

STATUS OFF

CIRCULATION PUMP

WATER

CONDENSER

H2O IN REF VALVE*
ON/OFF

OFF/ON

OFF

HOT GAS ­HOT GAS
BYPASS
VALVE

DRYER

FAN
OFF

*Double throw relay: OFF: REF valve closed, REF bypass valve open

OFF

DISCHARGE
TUBE

CAPILLARY
TUBE

H2O PUMP
OFF/ON

SUCTION
TUBE

OFF

COMP - COMPRESSOR

HOT GAS
OFF

CLRCO046

23

Design ■Features ■Performance

SERVICING

Mode 8: Water Fill with Refrigeration Required

(Note: Normal Start-up with a warm refrigerator)

NO REFRIGERATION FLOW

REFRIGERATION FLOW

HIGH PRESSURE

LOW PRESSURE

TRANSITIONAL PRESSURE

IN CAPILLARY TUBE

H

L

C

L

L

REF VALVE ­REFRIGERATION
VALVE (LOWER)

ON

REF VALVE ­REFRIGERATION
BYPASS
VALVE (UPPER)

L

REFRIGERATOR

EVAPORATOR

L

L

FAN ­CONDENSER
FAN

ON

ICE MAKER EVAPORATOR

H2O IN -

WATER

SUPPLY

H2O PUMP -

WATER

CIRCULATION PUMP

CONDENSER

OFF

C

ON

H

DRYER

OFF

HOT GAS ­HOT GAS
BYPASS
VALVE

C

C

OFF

CAPILLARY
TUBE

L

ACCUMULATOR

L

L

SUCTION
TUBE

L

H

DISCHARGE
TUBE

L

L

C

ON

COMP - COMPRESSOR

C

C

Bin sensor: Calling for ice
Refrigerator sensor: Calling for cooling
Liquid line sensor: Not applicable

RELAY
STATUS ON

COMP

H2O IN REF VALVE*ONFAN
ON

ON

*Double throw relay: OFF: REF valve closed, REF bypass valve open

Note: The refrigerator will continue to run untill the completion of the

three minute fill cycle regardless of the refrigerator sensor

H2O PUMP
OFF

HOT GAS
OFF

CLRCO047

24

Design ■Features ■Performance

THERMISTORS
Condenser Thermistor

The condenser thermistor senses the refrigeration system “high side” temperature. This is used in conjunc­tion with the control board to determine the length of the freeze and harvest cycles.

Thermistors generally fail due to moisture or physical damage. U-Line “high side” thermistors are encased
in a specially-designed, moisture-resistant stainless cap. The thermistor is mounted to the “high side” or
“dry” portion of the refrigeration system to eliminate physical damage and moisture concerns.

Refrigeration Thermistor

The refrigeration thermistor monitors refrigerator temperature and determines refrigerator cycles. This ther­mistor can also affect ice production, since the refrigeration cycle will take precedence over the ice pro­duction to protect perishables. The thermistor is placed in a sealed stainless steel well tube to protect it
from moisture and is located on the inside wall of the refrigerator.

Bin Level Thermistor

The ice machine shut-off is controlled by the level of ice in the ice storage bin. When the bin is full, ice
contacts the bin thermistor well tube, which senses the cool temperatures, then opens which stops the ice
machine. The ice machine will remain off until the ice cubes no longer contact the bin thermistor well
tube. This causes the bin thermistor to warm and close, restarting the ice machine. The thermistor is
placed in a sealed stainless steel well tube to protect it from moisture and is located on the wall, in the ice
bin.

To view actual thermistor reading:

1. Press “WARMER” momentarily and the far left LED (1) will come on and the display will show
refrigerator temperature.

2. Press “COLDER” and hold until the middle LED (2) comes on, the liquid line temperature will be
displayed.

3. Keep holding “COLDER” down and the right LED (3) will come on, showing the ice bin thermistor
temperature. If you continue pressing the “COLDER” button, the display will alternate between bin
and liquid line temperature.

SERVICING

25

Design ■Features ■Performance

CONTROLLER

The temperature controller is located below the clear ice maker. It consists of an LED display, three LED
status indicator lights and three touchpad buttons. The LED display shows the refrigerator temperature set

point and is calibrated in degrees Fahrenheit.

To Check/Change Temperature Set Point:

To display actual temperature in the refrigerator, press the “WARMER” button momentarily. A solid status
indicator light (1) will show the air temperature reading in the cabinet for approximately 10 seconds.

To adjust the temperature set point, press the “SET TEMP” button momentarily; the display will flash. Press
the “WARMER” or “COOLER” button as desired to change the set point. When the desired set point shows
on the display, wait 10 seconds and the new set point will be saved. Wait 24 hours for the temperature to
stabilize before checking the actual temperature again.

Error Indicator LEDs: There are three LED indicator lights on the display window, LEDs 2 and 3 are for
service technician use only.

SET

TEMP

WARMER

COOLER

CLRCO011

1 2 3

SERVICING

The display and control board on the CLRCO2075 model was designed to be a diagnostic tool.
The first thing that should be looked at is the display. Check for flashing lights to indicate that
there may be a drain problem or a thermistor problem. If the unit is working properly when you
arrive (or when the customer calls to set up service) check the display. If the #3 LED is flashing
the customer may have a slow running drain. Pour a gallon of water in the bin and see if the unit
shuts down. If the #2 LED is flashing the unit may have overheated due to restricted airflow or
high ambient temperatures. The lights will flash until the unit is unplugged. This should prevent
the problem of running a service call and finding the unit is working the way it should.

The following is the way to use the control board as a tool to help you in diagnosing the unit. It
is important to follow the directions exactly. For some areas you may need to have the on/off
switch turned to the off position or clean position.

IMPORTANT

26

Design ■Features ■Performance

LED Status Meaning

1 Solid Refrigerator Temperature displayed

Flashing Not Applicable

2 Solid Service Menu – wait 10 seconds and it will exit

automatically

Flashing Open thermistor – Refer to Thermistors.

3 Solid Service Menu – wait 10 seconds and it will exit

automatically (bin temperature displayed)

Flashing Drain Pump has been blocked or pump is

overloaded check installation and drain line

Note: If either of the flashing alerts (2 or 3) have been activated, power must be disconnected to the unit
either by unplugging or tripping the breaker to reset LEDs.

SERVICING

1. Be sure the cycle selector switch (located in the lower right side of the grille) is set to “ON”.
Display can be on when selector switch is “OFF”.

2. The controller will be set at the default setting of 38°F when it is first powered up. This
setting will display on the LED and should satisfy most customer applications.

IMPORTANT

Check Lights on Control Board

The lights on the control board indicate power to the labeled component. The exception is the “REF
VALVE” (refrigeration valve). When this light is off, the refrigeration bypass valve is powered.

1. PWR 5. HOT GAS

2. REF VALVE 6. H2O IN – water inlet

3. FAN 7. COMP

4. H2O PUMP – (water circulating)

CLRCO2075 CONTROL BOARD DIAGNOSTICS

This section can be used to aid in pinpointing a problem when diagnosing a unit. Every component in the
CLRCO unit can be energized separately and its operation verified by following the procedure below. In
addition to verifying individual component operation the function of the circuit board can be checked as
well.

1. Turn power switch to the off position.

2. Disconnect power from the unit.

3. Turn ice thickness adjustment dial to the +5 setting.

4. Add a jumper to thermistor pins 9 and 10. See page 39 for pin locations.

5. Disconnect one pink lead from circuit board.

6. Reconnect power supply to unit.

Any of the following steps can be checked individually or combined with others to check components.

Refrigeration bypass valve

This valve is energized when the REF VLV light on the circuit board is not illuminated.
First check to see if the valve is energized. It should feel hot to the touch. If it is not check voltage

at the valve itself and at the output from the board.

27

Design ■Features ■Performance

SERVICING

Thermistors:

10 9 8 7 6 5 4 3 2 1

Ice/Ref 1 and 2

6

7

4

3

5

2

1

0

-1

-2

-5

-3

-4

5

4
3

2

Cond to 3 and 4
Ref to 5 and 6

1

CLRCO035

28

Design ■Features ■Performance

Compressor COMP

To energize the compressor touch the previously disconnected pink lead back to the board. You
should hear the compressor start up and the green COMP light will illuminate. If it does not start
check voltage at the compressor and at the output from the board. If the green light does not illu­minate first remove both pink wires from the board and directly jump the two spade connectors
together. If the light does not illuminate still then the board is defective. If the light does illuminate
there is an open pump overflow circuit. This circuit should only be open when the P60 pump is
overfilled with water. This would signal a defective pump or blocked drain line. When doing this
do not start and stop the compressor frequently or the compressor overload protect will trip.

Hot gas valve Hot Gas

Make sure the pink lead is disconnected from the board before beginning this procedure. Turn the
power switch to the on/ice position. You should hear the hot gas valve click and the green HOT
GAS light should illuminate. If the valve does not operate but the green light comes on check volt­age at the valve and board output. If the green light does not illuminate first check the On/Off/Cln
switch for continuity. If the switch is operating properly and set to the on position the green HOT
GAS light should be illuminated.

Water valve H20 IN

Make sure the pink lead is disconnected from the board before beginning this procedure and the
power switch is still in the off position. Turn the switch to the CLN position. The water valve
should energize and the H20 IN green light should illuminate. You should see water filling into the
trough. If water is not filling but the green light is on check voltage at the valve and board output.
Also, verify that the water supply is hooked up and turned on. If the light does not illuminate
check the Cln switch for continuity. If the switch is operating properly and set to the CLN position
the green H20 IN light should be illuminated.

Refrigeration valve REF VLV
Condenser fan COND FAN
Water circulation pump H20 PUMP

Before beginning this ensure the pink lead is disconnected from the board and the switch is in the
off position.

Turn ice thickness adjustment dial to +2 setting. This should energize the REF VLV relay and illumi­nate the green REF VLV light. You should hear the valve click and it should feel warm to the touch.
Continue turning the dial to the “0” setting. At this point the condenser fan should activate and the
green COND FAN light will illuminate. Finally, turn the dial to -2 and the water circulation pump
will energize. If there is water in the trough the pump should begin to pump water over the ice­mold. If the water is low the pump may not pump water but make splashing noise only.

At the conlusion of this testing:

1. Disconnect power supply to unit.

2. Connect both pink leads to the circuit board.

3. Remove jumper to thermistor pins 9 and 10. See page 39 for pin locations.

4. Turn ice thickness adjustment dial to the “0” setting.

5. Connect power to the unit.

6. Turn power switch to the ice position.

SERVICING

REFRIGERATION SYSTEM DIAGNOSIS GUIDE

System Suction Suction Compressor Condenser Capillary Evaporator Wattage

Condition Pressure Line Discharge Tube

Normal Normal Slightly below Very hot Very hot Warm Cold Normal

room

temperature

Overcharge Higher than Very cold Slightly warm Hot to warm Cool Cold Higher than

normal may frost to hot normal

heavily

Undercharge Lower than Warm - near Hot Warm Warm Extremely cold Lower than

normal room near inlet - normal

temperature outlet

below room

temperature

Partial Somewhat Warm - near Very hot Top passes Room Extremely cold Lower than

Restriction lower than room warm - temperature near inlet - normal

normal-in temperature lower passes (cool) or outlet

vacuum cool colder below room

(near room temperature

temperature) backing up

due to liquid

Complete In deep Room Room Room Room No Lower than

Restriction vacuum temperature temperature temperature temperature refrigeration normal

(cool) (cool) (cool) (cool)

No 0 PSIG Room Cool Room Room No Lower than

Gas to temperature to temperature temperature refrigeration normal

25" (cool) hot (cool) (cool)

29

Design ■Features ■Performance

SERVICING

30

Design ■Features ■Performance

ICE THICKNESS ADJUSTMENT

Your U-Line Clear Ice Maker uses advanced technology to make ice that is crystal clear. This
technology cascades a flow of water over a chilled ice mold that is mounted vertically so no water sits in
it. Because of this ice making technology, clear ice cubes differ significantly
from regular ice cubes. Differences are as follows:

• Dimples. U-Line clear ice cubes have “dimples” on one
side from the cascading water process.

• Cube Variations. Cubes made from different batches, or
even cubes within the same batch may have varying
dimples, thicknesses and/or sizes due to the cascading
water process.

• Cube “slabbing.” The U-Line clear ice maker makes a
“slab” of ice that falls from the vertical mold rely­ing
on gravity to break the ice bridges. Depending
on
the control setting, and the fullness of the ice
bucket, it maybe necessary to tap the ice slab
with the scoop to break it apart.

The ice cube thickness control is factory set for best overall performance. The factory setting is designed to
maintain an ice bridge of approximately 1/16" to 1/8" under normal conditions resulting in a dimple of
approximately 1/4" to 1/2" in depth. A fuller cube with less of a dimple results in a thicker ice bridge. As
the ice bridge becomes thicker, the tendency for the cubes to stay together as a slab increases. A bridge
thicker than 1/8" may cause cubes to overfill the ice bucket.

Cube Types

SERVICING

Do not touch electrical wires. Disconnect power to the ice maker before making any ice
thickness adjustments.

!

WARNING

!

DIMPLES

ICE BRIDGE

ICE001

Ice Bridge and Dimples

BRIDGE

TOO THICK

1/4" TO 1/2"

DIMPLE

GOOD

1/16" TO 1/8"

ICE BRIDGE

DIMPLE

TOO DEEP

BRIDGE

TOO THIN

LITTLE OR

NO DIMPLE

BAD

31

Design ■Features ■Performance

1. Disconnect power to the unit.

Access Cover

2. Remove the screws securing the front access panel.

Ice Thickness Adjustment Dial

SERVICING

ACCESS

PANEL

SCREWS

WARMER

SET

TEMP

COLDER

ICE CUBE THICKNESS

ADJUSTMENT

-4

-3

-5

-2

-1
0

1

2

5

3

4

DIAL IS FACTORY

DIAL

SET TO “0”

CLRCO030

CLRCO031

32

Design ■Features ■Performance

3. Locate the ice cube thickness adjustment dial on the control board. Turn the dial clockwise (+ number)
to thicken or counterclockwise (- number) to thin the ice bridge.

Ice Cube Mold

4. Reinstall front access cover.

5. Reconnect power to ice maker.

6. Empty ice bucket.

SERVICING

Ice thickness adjustment dial should be turned only one increment (number on dial) at a
time. Allow the ice maker to stabilize for 24 hours before making further adjustments. Since
ice cubes in any given batch will vary, choose cubes from the sample area for comparison
when making adjustments. The factory setting is “0”.

IMPORTANT

SAMPLE AREA

33

Design ■Features ■Performance

SERVICING

TROUBLESHOOTING

1 Not refrigerating (compressor and fan are operating)

CAUSE REMEDY

a. Little or no frost pattern on evaporator a. Check for sealed system leak or restriction

2 Not refrigerating (compressor not operating, fan operating)

CAUSE REMEDY

a. Wire off or broken a. Check wiring
b. Defective compressor - check resistence b. Replace compressor
c. Defective overload c. Replace overload
d. Defective relay d. Replace relay

3 Compressor overheating

CAUSE REMEDY

a. Condenser air flow restricted a. Remove restriction (clean condenser

and grille)
b. Condenser fan blade obstructed b. Remove blade restriction
c. Condenser fan motor stalled c. Replace fan motor
d. Defective compressor - check resistance d. Replace compressor

4Water leak inside unit

CAUSE REMEDY

a. Blocked drain a. Remove blockage

5 Excessive frost build-up

CAUSE REMEDY

a. Gasket not sealing a. Repair or replace gasket
b. Door out of alignment b. Re-align the door
c. Light stays on when door is closed c. Repair light bracket

6 Noisy

CAUSE REMEDY

a. Copper refrigeration tube touching cabinet a. Carefully adjust tubing
b. Fan blade touching shroud b. Adjust fan mounting or shroud
c. Fan blade obstruction (wiring, foam insulation, c. Remove obstruction

packaging material)

7 Fresh food temperature too cold

CAUSE REMEDY

a. Controller set too cold a. Adjust controller
b. Defective control board b. Replace control board
c. Wiring defect c. Check wiring

DO NOT service the unit until the main electrical power has
been disconnected.

!

WARNING

!

34

Design ■Features ■Performance

SERVICING

8 No ice production

CAUSE REMEDY

a. No water supplied to unit a. Check that water is connected and turned on
b. Stand pipe not inserted in water trough b. Insert stand pipe securely into water trough

9 Low ice production

CAUSE REMEDY

a. High ambient temperatures around unit a. Low ice rate is normal with high ambient

temperatures
b. Deposit build-up on evaporator grid b. Run the unit through a clean cycle
c. Ice thickness dial set incorrectly c. Adjust ice thickness dial
d. Dirty condenser coil d. Clean condenser coil

10 Poor ice quality (unclear cubes)

CAUSE REMEDY

a. Poor incomining water quality a. Consult a plumber
b. Deposit build-up on evaporator grid b. Run the unit through a clean cycle

11 Unit produces shallow or incomplete cubes

CAUSE REMEDY

a. Low water level a. Check that stand pipe is fully seated inside

water trough
b. Low water pressure b. Consult a plumber (pressure should be 20

minimum to 120 maximum psi)
c. Unit is not level c. Level unit to assure even water flow
d. Ice thickness dial set incorrectly d. Adjust ice thickness dial

12 Water leak under unit

CAUSE REMEDY

a. Incoming water supply line leaking a. Check brass connection
b. Fill tube leaking b. Tighten fill tube connection to water line
c. Drain connections not tight c. Check all connections

13 Water in ice bin

CAUSE REMEDY

a. Bin drain kinked or restricted a. Clear drain of obstruction or kink
b. External drain is restricted b. Check drain lines

35

Design ■Features ■Performance

SERVICING

CLR2075 Wiring Diagram

CLRCO028

-1

-2

-3

-4

-5

5

4

3

2

1

0

WHITE
GREEN
RED
BLACK

RED
BLACK
WHITE
GREEN

THIS SIDE

TO DISPLAY

10 9 8 7 6 5 4 3 2 1

Thermistors:
Ice/Ref 1 and 2
Cond to 3 and 4
Ref to 5 and 6

36

Design ■Features ■Performance

SERVICING

PARTS LISTING

How to Order Replacement Parts

1. Locate the illustration(s) for the model you are servicing.

2. Refer to the area where the desired part would be installed, locate the part and note the item number
assigned to it.

3. Locate the item number in the left column of the parts listing which is on the next page from the prod­uct illustration. Note the full description and the corresponding part number. If this is for a warranty
unit, please indicate and record the model and serial numbers.

4. When ordering parts, it will be necessary to supply us with Model Number, Serial Number, Part
Number, Part Description and in some cases Color or Voltage.

5. U-Line requires the return of the parts listed below if replaced under warranty.

• Fan motors (condenser and evaporator)

•Temperature controls

•Water solenoid valves

• Pumps

• Control boards

• Ice maker motors

• Bypass solenoids

• Compressors (two years old or less - lines soldered closed)

All warranty parts will be shipped at no charge as long as warranty status has been confirmed. 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 a part or if you may field scrap it. If U-Line requires a defective part to be
returned, a prepaid shipping label will be included with your new replacement part. When returning parts
please 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 (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).

6. Parts may be ordered on-line or by FAX or phone.

On-Line: www.U-LineService.com
FAX Number: [phone]
Phone Number: [phone] or [phone]; press 3

To expedite parts shipments, on-line ordering is fastest. When placing FAX orders, copy the FAX Parts
Order Form, located in the back of this manual, when placing an order.

7. U-Line will not pay warranty claims for the replacement of a complete ice maker assembly. Complete
ice maker assembly replacement is not necessary because all ice maker parts are available as replace­ment parts and are stocked in our inventory.

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 may void the
warranty.

37

Design ■Features ■Performance

CLRCO2075 MODEL

NOTES

MODEL CLRCO2075 (1 OF 3)

38

Design ■Features ■Performance

CLRCO2075 MODEL PARTS

10

2

3

4

11

12

13

14

5
6

1

7

8
9

27

26
25

24

23

19

21

20

22

15

16

17

18

CLRCO032

39

Design ■Features ■Performance

MODEL CLRCO2075 (1 OF 3)

CLRCO2075 MODEL PARTS

Parts Not Shown

Item Description White Black Stainless Steel

1 Door Assembly 80-17019-02 80-17019-01 See Parts Not Shown
2 Door Handle Top 11926-4-KIT 11926-4-BLK See Parts Not Shown
3Door Handle Bottom 11927-4-KIT 11927-4-BLK 11927-4-BLK
4 Door Gasket (outer) 12094-03 12094-01 12094-02
5 Door Gasket (vertical) 12095-09 12095-07 12095-08
6 Door Shelf 31690 31690 31690
7 Door gasket (horizontal) 12095-03 12095-01 12095-02
8 Door Switch Bracket 11973 11973 11973

9 Pivot Plate 11901-1 11901-1 11901-1
10 Threaded Hole Plug 31723-WHT 31723-BLK 41156-SS
11 Light Cover 11859 11859 11859
12 Lamp Bulb 31317 31317 31317
13 Refrigerator Evaporator Assembly 2649-S 2649-S 2649-S
14 Hinge Assembly Top R/H 11898-S-KIT 11898-S-BLK 11898-S-SS
15 Control Board Assembly 68008-S 68008-S 68008-S
16 Lower Front Panel 12090-02 12090-01 12090-03
17 Display Board 68010 68010 68010
18 Leveling Leg 41319 41319 41319
19 Hinge Assembly Bottom R/H 11899-S-KIT 11899-S-BLK 11899-S-SS
20 Pivot Post 42096 42096 42096
21 Door Closer Assembly 31673-S 31673-S 31673-S
22 Rocker Switch 2285 2285 2285
23 Grille Plug 31304 31304 31304
24 Grille 11902-KIT-01 11902-BLK-01 11902-BLK-01
25 Drain Trough 31391-5 31391-5 31391-5
26 Drain Cup 26008 26008 26008
27 Glass Shelf 31704 31704 31704

Item Description White Black Stainless Steel

Door Assembly Stainless Steel ­Right Hand Hinge

N/A N/A 80-17019-03

Door Assembly Stainless Steel ­Left Hand Hinge

N/A N/A 80-17019-13

Door Handle Top Modified N/A N/A 31682-8-BLK
Door Handle N/A N/A 11949

40

Design ■Features ■Performance

CLRCO2075 MODEL PARTS

MODEL CLRCO2075 (2 OF 3)

5

4

3

2

1

23

6

7

8

9

10

11

12

13

22

21

20

19

18

14

15

17

16

CLRCO033

MODEL CLRCO2075 (2 OF 3)

41

Design ■Features ■Performance

CLRCO2075 MODEL PARTS

Item Description White Black Stainless Steel

1 Cover - Front 12070-01 12070-01 12070-01

2 Evaporator Assembly 2276-CLRCO-S 2276-CLRCO-S 2276-CLRCO-S

3Water Dispersion Receptacle 11812 11812 11812

4Tube Retainer 26009 26009 26009

5 Pre-formed Tube - White 31615-S 31615-S 31615-S

6 Circulation Pump 31613 31613 31613

7Well Nut 41979 41979 41979

8 Circulation Pump Cover 12057-01 12057-01 12057-01

9 Hook for Ice Scoop 42011 42011 42011
10 Water Trough 12068-01 12068-01 12068-01
11 Stand Pipe 31619 31619 31619
12 Drain Tube - Clear 2820-S 2820-S 2820-S
13 Drain Pan 31550-1-F 31550-1-F 31550-1-F
14 Compressor 70078-S 70078-S 70078-S
15 Overload 71011 71011 71011
16 Relay 71012 71012 71012
17 Dryer 2850 2850 2850
18 Condenser Fan Motor 5300 5300 5300
19 Condenser Fan Blade 5303 5303 5303
20 Condenser Assembly 2269-S 2269-S 2269-S
21 Rocker switch wire harness 68016 68016 68016
22 Rocker Switch Mounting Bracket 12027 12027 12027
23 Light Plunger 1916 1916 1916

Item Description White Black Stainless Steel

Ice Scoop 31614 31614 31614
U-Line Specified Clear Ice Cleaner ­6 Applications Per Order

41978 41978 41978

Parts Not Shown

42

Design ■Features ■Performance

CLRCO2075 MODEL PARTS

MODEL CLRCO2075 (3 OF 3)

13

14

1

2

3

11

12

10

9

4

5

6

8

7

CLRCO034

43

Design ■Features ■Performance

CLRCO2075 MODEL PARTS

Item Description White Black Stainless Steel

1 Heat Exchanger Assembly 72006-S 72006-S 72006-S
2 Back Panel 11969-02 11969-02 11969-02
3Valve Manifold Assembly 80-37005-00-S 80-37005-00-S 80-37005-00-S
4 Power Cord 2894 2894 2894
5Water Valve 2716 2716 2716
6 Plastic Nut & Sleeve 41254 41254 41254
7Water Line Assembly 404-30 404-30 404-30
8 90 Degree Brass Fitting 41826 41826 41826
9 Drain Pump P60 P60 P60

10 Drain Tubing - White 31617-S 31617-S 31617-S

11 Hot Gas Bypass Valve Assembly 73000-S 73000-S 73000-S
12 Coil Only - Hot Gas Bypass Valve Assembly 73001-S 73001-S 73001-S
13 Wire - Pump to Power Cord 2892-02 2892-02 2892-02
14 Coil Only - Refrigeration Valve BF4C05-S BF4C05-S BF4C05-S

MODEL CLRCO2075 (3 OF 3)

44

Design ■Features ■Performance

NOTES

45

Design ■Features ■Performance

NOTES

46

Design ■Features ■Performance

NOTES

47

FAX PARTS ORDER FORM

FAX # [phone]

Account# ____________________________________
Bill to: ______________________________________

____________________________________________

____________________________________________
Date:________________________________________
Phone#______________________________________

Ship to:______________________________________

____________________________________________

____________________________________________
Attention:
P.O. ________________________________________
Fax# ________________________________________

PART# COLOR QTY DESCRIPTION MODEL SERIAL UNIT IN

NUMBER WARRANTY?

SPECIAL INSTRUCTIONS:

All part shipments will be sent ground delivery.
We have air shipment available at an additional cost to you.

Next Day Air 2nd Day Air 3 Day Select

If you do not have an open account with us your order will be shipped C.O.D.

COMMENTS: ________________________________________________________________________________

____________________________________________________________________________________________

Authorized By ____________________________________________

P.O. Box 245040
Milwaukee, WI 53224-9540
Phone [phone]
FAX [phone]

Printed in U.S.A.– August 2003 ULIN 9332 P/N 30018