Unimac UC27MN2-Extractor Parts Diagram

Washer-Extractor

CHM1624C

Cabinet Hardmount

Mechanical Timer

Refer to Page 8 for Model Numbers

Troubleshooting

www.alliancelaundry.com

Part No. F232202R4

December 2016

Table of

Contents

Safety Information...................................................................................3

General Safety Precautions....................................................................3

Important Safety Instructions ................................................................4

Locating an Authorized Servicer...........................................................6

Introduction..............................................................................................7

Customer Service...................................................................................7

Nameplate Location...............................................................................7

Model Identification ..............................................................................8

Theory of Operation ................................................................................9

Starting the Machine..............................................................................9

Fill..........................................................................................................9

Supply....................................................................................................9

Wash ......................................................................................................9

Drain ......................................................................................................9

Extract....................................................................................................9

Troubleshooting .....................................................................................10

1. No Hot Fill Analysis (OPL)........................................................11

2. No Hot Fill Analysis (Coin)........................................................16

3. No Cold Fill Analysis (OPL) ......................................................20

4. No Cold Fill Analysis (Coin)......................................................24

5. No Supply 2 Fill Analysis (OPL)................................................28

6. No Supply 2 Fill Analysis (Coin) ...............................................32

7. No Supply 3 Fill Analysis (OPL)................................................36

8. No Supply 3 Fill Analysis (Coin) ...............................................40

9. No Motor Function (OPL; Fw and Rev).....................................44

10. No Motor Function (Coin; Fw and Rev).....................................48

11. No Motor Function (OPL; Extract).............................................54

12. No Motor Function (Coin; Extract) ............................................58

13. No Fill at Any Time During the Cycle (OPL) ............................64

14. No Fill at Any Time During the Cycle (Coin)............................68

15. Drain Valve Malfunction (OPL).................................................72

16. Drain Valve Malfunction (Coin).................................................76

17. Door Unlocking Malfunction (OPL)...........................................80

18. Door Unlocking Malfunction (Coin) ..........................................84

19. Water Running Continuously with Machine Power Off.............88

20. Excessive Vibration and/or Noise During Spin ..........................90

21. Excessive Cycle Time.................................................................91

22. Machine Timer Won’t Advance with Door Locked (OPL)........92

23. Machine Timer Won’t Advance with Door Locked (Coin)........96

24. Timer Advances But Machine Does Not Start

with Door Locked (OPL) ..........................................................100

25. Timer Advances But Machine Does Not Start

with Door Locked (Coin)..........................................................104

26. Overload Relay Tripping Repeatedly .......................................108

F232202R4 1

27. Compartment 2 of Supply Dispenser Not Flushing

Completely................................................................................109

28. Troubleshooting and Cleaning the Coin Drop ..........................110

29. Replacing Old-Style Tension Spring on

Electronic Coin Drop ................................................................113

2 F232202R4

Section 1

• Failure to install, maintain and/or operate this product according to the manufacturer’s instructions may result in conditions which can produce serious injury, death and/or property damage.

• Do not repair or replace any part of the product or attempt any servicing unless specifically recommended or published in this Service Manual and unless you understand and have the skills to carry out the servicing.

• Whenever ground wires are removed during servicing, these ground wires must be reconnected to ensure that the product is properly grounded and to reduce the risk of fire, electric shock, serious injury or death.

W006R2

WARNING

Safety Information

Throughout this manual and on machine decals, you will find precautionary statements (“CAUTION,” “WARNING,” and “DANGER”) followed by specific instructions. These precautions are intended for the personal safety of the operator, user, servicer and those maintaining the machine.

DANGER

Danger indicates the presence of a hazard that will cause severe personal injury, death or substantial property damage if the danger is ignored.

WARNING

Warning indicates the presence of a hazard that can cause severe personal injury, death or substantial property damage if the warning is ignored.

CAUTION

Caution indicates the presence of a hazard that will or can cause minor personal injury or property damage if the caution is ignored.

Additional precautionary statements (“IMPORTANT” and “NOTE”) are followed by specific instructions.

IMPORTANT

The word “IMPORTANT” is used to inform the reader of specific procedures where minor machine damage will occur if the procedure is not followed.

NOTE

The word “NOTE” is used to communicate installation, operation, maintenance or servicing information that is important but not hazard related.

General Safety Precautions

In the interest of safety, some general precautions relating to the operation of this machine follow.

F232202R4 3

(continued)

Safety Information

To reduce the risk of electric shock, fire, explosion, serious injury or death:

• Disconnect electric power to the washer-extractor before servicing.

• Never start the washer-extractor with any guards/panels removed.

• Whenever ground wires are removed during servicing, these ground wires must be reconnected to ensure that the washer-extractor is properly grounded.

W460

WARNING

Repairs that are made to your products by unqualified persons can result in hazards due to improper assembly or adjustments subjecting you, or the inexperienced person making such repairs, to the risk of serious injury, electrical shock, or death.

W007

WARNING

If you or an unqualified person perform service on your product, you must assume the responsibility for any personal injury or property damage which may result. The manufacturer will not be responsible for any injury or property damage arising from improper service and/or service procedures.

W008

WARNING

To reduce the risk of fire, electric shock, serious injury or death to persons when using your washer, follow these basic precautions:

W023

WARNING

Always contact your dealer, distributor, service agent or the manufacturer about any problems or conditions you do not understand.

Important Safety Instructions

1. Read all instructions before using the washer-extractor.

2. Refer to the GROUNDING INSTRUCTIONS in the INSTALLATION manual (supplied with your washerextractor) for the proper grounding of the washer-extractor.

3. Do not wash textiles that have been previously cleaned in, washed in, soaked in or spotted with gasoline, drycleaning solvents or other flammable or explosive substances. They give off vapors that could ignite or explode.

4. Do not add gasoline, dry-cleaning solvents or other flammable or explosive substances to the wash water. These substances give off vapors that could ignite or explode.

5. Under certain conditions, hydrogen gas may be produced in a hot water system that has not been used for two weeks or more. HYDROGEN GAS IS EXPLOSIVE. If the hot water system has not been used for such a period, before using a washer-extractor, turn on all hot water faucets and let the water flow from each for several minutes. This will release any accumulated hydrogen gas. The gas is flammable. Do not smoke or use an open flame during this time.

4 F232202R4

Safety Information

6. Do not allow children to play on or in a washer-extractor. Close supervision of children is necessary when the washer-extractor is used near children.

7. Before the washer-extractor is removed from service or discarded, remove the door to the washing compartment.

8. Do not reach into the washer-extractor if the wash basket is moving.

9. Do not install or store the washer-extractor where it will be exposed to water and/or weather.

10. Do not tamper with the washer-extractor’s controls.

11. Do not repair or replace any part of the washer-extractor or attempt any servicing unless specifically recommended in the user-maintenance instructions or in published user-repair instructions that the user understands and has the skills to carry out.

12. To reduce the risk of an electrical shock or fire, DO NOT use an extension cord or an adapter to connect the washer-extractor to an electrical power source.

13. Use the washer-extractor only for its intended purpose, washing clothes.

14. ALWAYS disconnect the washer-extractor from its electrical supply before attempting any service.

15. Install the washer-extractor according to the INSTALLATION INSTRUCTIONS. All connections for water, drain, electrical power and grounding must comply with local codes and, when required, be made by licensed personnel.

16. To reduce the risk of fire, textiles which have traces of any flammable substances such as vegetable oil, cooking oil, machine oil, flammable chemicals, thinner, etc. or anything containing wax or chemicals such as in mops or cleaning cloths, must not be put into the washer-extractor. These flammable substances may cause the fabric to ignite.

17. Do not use fabric softeners or products to eliminate static unless recommended by the manufacturer of the fabric softener or product.

18. Keep the washer-extractor in good condition. Bumping or dropping the washer-extractor can damage its safety features. If this occurs, have the washer-extractor checked by a qualified service person.

19. Replace worn power cords and/or loose plugs.

20. Be sure that water connections have a shut-off valve and that fill hose connections are tight. CLOSE the shutoff valves at the end of each wash day.

21. The loading door MUST BE CLOSED any time the washer-extractor is to fill, tumble or spin. DO NOT bypass the loading door switch and permit the washer-extractor to operate with the loading door open.

22. Always read and follow the manufacturer’s instructions on packages of laundry and cleaning aids. Heed all warnings and precautions. To reduce the risk of poisoning or chemical burns, keep them out of the reach of children at all times (preferably in a locked cabinet).

23. Always follow the fabric care instructions supplied by the textile manufacturer.

24. Never operate the washer-extractor with any guards and/or panels removed.

25. DO NOT operate the washer-extractor with missing or broken parts.

26. DO NOT by-pass any safety devices.

27. Failure to install, maintain and/or operate this washer-extractor according to the manufacturer's instructions may result in conditions that can produce bodily injury and/or property damage.

NOTE: The WARNING and IMPORTANT SAFETY INSTRUCTIONS appearing in this manual are not meant to cover all possible conditions and situations that may occur. Common sense, caution and care must be exercised when installing, maintaining and operating the washer-extractor.

Any problems or conditions not understood should be reported to the dealer, distributor, service agent or the manufacturer.

F232202R4 5

Safety Information

Locating an Authorized Servicer

Alliance Laundry Systems is not responsible for personal injury or property damage resulting from improper service. Review all service information before beginning repairs.

Warranty service must be performed by an authorized technician, using authorized factory parts. If service is required after the warranty expires, Alliance Laundry Systems also recommends contacting an authorized technician and using authorized factory parts.

6 F232202R4

Customer Service

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Model No.

Serial No.

Voltage Amps

Required Circuit Breaker Amps.

Hz Wire Phase

Max. Load KG Max. Speed RPMLB

Elec. Heating

Product No. Date Code

KW Steam Press PSI BAR

CHM2411P

Introduction

Section 2

Introduction

Alliance Laundry Systems is not responsible for personal injury or property damage resulting from improper service. Review all service information before beginning repairs.

If literature or replacement parts are required, contact the source from whom the machine was purchased or contact Alliance Laundry Systems at (920) 748-3950 for the name of the nearest authorized parts distributor.

Nameplate Location

When calling or writing about your product, be sure to mention model and serial numbers. Model and serial numbers are located on nameplate(s) as shown.

For technical assistance, call (920) 748-3121.

F232202R4 7

Introduction

HC18MC2 HC18MD2 HC18MH2 HC18MN2 HC18MV2 HC18MX2 HC20MD2 HC20ML2 HC20MN2 HC20MX2 HC20MY2 HC25MC2 HC25MD2 HC25MH2 HC25ML2 HC25MN2 HC25MV2 HC25MX2 HC25MY2 HC27MC2 HC27MD2 HC27MH2 HC27MN2 HC27MV2 HC27MX2 HC30MD2 HC30ML2 HC30MN2 HC30MX2 HC30MY2 HC35MC2 HC35MD2 HC35MH2

HC35MN2 HC35MV2 HC35MX2 HC40MD2 HC40ML2 HC40MN2 HC40MX2 HC40MY2 HC50MC2 HC50MD2 HC50MH2 HC50ML2 HC50MN2 HC50MV2 HC50MX2 HC50MY2 HC60MD2 HC60ML2 HC60MN2 HC60MX2 HC60MY2 HC80MC3 HC80MD3 HC80MH3 HC80MN3 HC80MV3 SC18MC2 SC18MC3 SC18MD2 SC18MD3 SC18MH2 SC18MH3 SC18MN2

SC18MN3 SC18MV2 SC18MV3 SC18MX2 SC18MX3 SC20MD2 SC20ML2 SC20MN2 SC20MX2 SC20MY2 SC25MC2 SC25MD2 SC25MH2 SC25ML2 SC25MN2 SC25MV2 SC25MX2 SC25MY2 SC27MC2 SC27MD2 SC27MH2 SC27MN2 SC27MV2 SC27MX2 SC30MD2 SC30ML2 SC30MN2 SC30MX2 SC30MY2 SC35MC2 SC35MC3 SC35MD2 SC35MD3

SC35MH2 SC35MH3 SC35MN2 SC35MN3 SC35MV2 SC35MV3 SC35MX2 SC35MX3 SC40MD2 SC40ML2 SC40MN2 SC40MX2 SC40MY2 SC50MC2 SC50MC3 SC50MD2 SC50MD3 SC50MH2 SC50MH3 SC50ML2 SC50MN2 SC50MN3 SC50MV2 SC50MV3 SC50MX2 SC50MX3 SC50MY2 SC60MD2 SC60ML2 SC60MN2 SC60MX2 SC60MY2 SC80MC3

SC80MD3 SC80MH3 SC80MN3 SC80MV3 UC18MC2 UC18MC3 UC18MD2 UC18MD3 UC18MH2 UC18MH3 UC18MN2 UC18MN3 UC18MV2 UC18MV3 UC18MX2 UC18MX3 UC20MD2 UC20ML2 UC20MN2 UC20MX2 UC25MC2 UC25MD2 UC25MH2 UC25MN2 UC25MV2 UC25MX2 UC27MC2 UC27MD2 UC27MH2 UC27MN2 UC27MV2 UC27MX2 UC30ML2

UC30MN2 UC30MX2 UC35MC2 UC35MC3 UC35MD2 UC35MD3 UC35MH2 UC35MH3 UC35MN2 UC35MN3 UC35MV2 UC35MV3 UC35MX3 UC40MN2 UC50MC2 UC50MC3 UC50MD2 UC50MD3 UC50MH2 UC50MH3 UC50MN2 UC50MN3 UC50MV2 UC50MV3 UC50MX2 UC50MX3 UC60MN2 UC80MC3 UC80MD3 UC80MH3 UC80MN3 UC80MV3

Model Identification

Information in this manual is applicable to these washer-extractors.

8 F232202R4

Section 3

Theory of Operation

Starting the Machine

The door lock will not allow a cycle to be started until the door has been closed.

Fill

The operator selects a cycle and starts the machine. Water enters the machine through water valves that are controlled by the microcomputer. As water fills the basket, a column of air is trapped in a pressure bulb and hose. The air pressure continues to increase as the basket fills with water. When the desired water level is reached, the water level switch triggers the microcomputer and the water valves turn off.

A vacuum breaker installed in the inlet plumbing prevents the backflow of water.

Supply

The operator can either connect external liquid supplies to the machine or fill the supply dispenser with liquid or dry supplies. The supply dispenser's nozzles flush the compartments with water at the appropriate times throughout a cycle.

Drain

Cabinet Hardmount washer-extractors use a normally open gravity-type drain system. No pump is used. When the drain valve opens, the perforated basket allows water to drain from it.

In the event of a power failure, the drain valve will open automatically and the machine will drain.

Extract

A final high-speed extract step removes water from the load, which maximizes drying efficiency.

The door lock system will not allow the door to be opened until the cycle has finished.

Wash

The basket includes ribs that lift the laundry from the wash water. The laundry then tumbles back into the bath.

In 2-speed and variable-speed models, 1 dual-speed motor drives the basket's shaft with a V-belt. In 3speed models, 2 motors drive the basket's cylinder with a V-belt.

18-60 pound capacity models use 2 bearings that are held in place by a single cast-iron trunnion that is bolted to the frame. 80 and 125-pound capacity models use 2 flange-type bearing that are bolted to the frame.

F232202R4 9

Section 4

Troubleshooting

10 F232202R4

1. No Hot Fill Analysis (OPL)

CHM513S

No Hot Fill Analysis (OPL)

1A

YES

With the water turned on to the machine and a cycle started, no hot water is filling the machine when the

“

Hot” button is pressed.

*Note: All voltage readings are approximate.

Is there

voltage (120 or 220

Volts* AC) at the YV1 valve

solenoid across wires V1

(hot) and VN1 J9-1-9 (neutral)

and at the YV9 valve

solenoid across wires V9

(hot) and

VN9 (neutral)?

3A

5A

4A

2A

Check all hoses for blockage between the YV1 and YV9 valve ports and through the supply dispenser, including the vacuum breaker.

If there is no blockage, replace the entire hot water valve or install a repair kit onto the YV1 and/or YV9 valve ports. Please note that the valve solenoid isn

’

t available as a

service part.

Please refer to the

“

No Hot Fill

Hose (OPL)

”

illustration for hose

location clarification.

YES

NO

With

the

“

Hot” button

pushed on the cycle

selector, is there voltage

(120 or 220 Volts* AC) from G3

on the cycle selector to

terminal strip

29**?

Repair and/or replace the wire from G3 on the cycle selector to terminal strip 12. This wire is named 44.

Repair and/or replace the wire from terminal strip 12 to the YV1 and/or YV9 valve solenoids as needed.

Please note that the wire goes through valve harness connector J9-1-6.

Assuming that all checks were done properly, replace the timer or contact Alliance Laundry Systems

Customer Service Department to verify that all checks have been done correctly.

Is there

voltage (120 or 220

Volts* AC) from H3 on

the cycle selector to

terminal strip

29**?

Is there

voltage (120 or 220

Volts* AC) from 2b on

the timer to terminal

strip 29**?

7A

6A

NO

**Note: All voltage readings should be taken from terminal strip 29** as a neutral point.

Replace the cycle selector switch.

Note: Please make sure that the hot button on the switch is pressed.

YES

Repair and/or replace the wire between 2b on the timer and H3 on the cycle selector. This wire is called 40.

8A

YES

Is

there voltage (120 or 220 Volts* AC) from terminal strip 12

to terminal

strip 29**?

NO

Troubleshooting

F232202R4 11

Troubleshooting

No Hot Fill Hose (OPL) Illustration

YV9 VALVE PORT / SOLENOID

SUPPLY DISPENSER

HOT WATER VALVE

VACUUM BREAKER

YV1 VALVE PORT / SOLENOID

CHM277S

Please refer to the following 2 pages for wiring diagram information.

12 F232202R4

Troubleshooting

Please refer to the following 2 pages for wiring diagram information.

F232202R4 13

Troubleshooting

4

2A, 4A, 6A and 7A

No Hot Fill Analysis (OPL) (Sheet 1 of 2)

NOTE: Refer to the wiring diagram supplied with your machine.

14 F232202R4

Troubleshooting

CHM282S

0635913(E)

2A

5A

3A

8A

6A

7A

4A

1A

No Hot Fill Analysis (OPL) (Sheet 2 of 2)

F232202R4 15

Troubleshooting

2. No Hot Fill Analysis (Coin)

No Hot Fill Analysis (Coin)

With the water turned on to the machine and a cycle started, no hot water is filling the machine when the “Hot” button is pressed.

Check all hoses for blockage between the YV1 and YV9 valve ports and through the supply dispenser, including the vacuum breaker.

If there is no blockage, replace the entire hot water valve or install a repair kit onto the YV1 and/or YV9 valve ports. Please note that the valve solenoid isn part.

Please refer to the (Coin)” illustration for hose location clarification.

’

t available as a service

“

No Hot Fill Hose

YES

1A

Is there voltage (120 or

220 Volts* AC) at the YV1 valve

solenoid across wires V1

(hot) and VN1 (neutral)

and at the YV9 valve

solenoid across wires V9

(hot) and VN9 (neutral)?

NO

2A

With the “Hot” button

pushed on the cycle

selector, is there voltage

(120 or 220 Volts* AC) from G2

on the cycle selector to

J9-3-1** on the input

connector?

NO

YES

3A

Repair and/or replace the wire from G2 on the cycle selector, through J9-1-6 valve harness connector and to the YV1 and/or YV9 valve solenoids as needed. This wire is named J9-1-6 G2.

Is there voltage (120

or 220 Volts* AC) from H2 on

the cycle selector to J9-3-1** on the input

connector?

NO

6A

Repair and/or replace the wire between 2b on the timer and H2 on the cycle selector. This wire is called 2BH2.

*Note: All voltage readings are approximate.

**Note: All voltage readings should be taken from input connector J9-3-1 as a neutral point.

YES

Is there voltage (120 or 220

Volts* AC) from 2b on

the timer to J9-3-1** on

the input connector?

4A

5A

YES

NO

Replace the cycle selector switch.

Note: Please make sure that the hot button on the switch is pressed.

Assuming that all checks were done properly, replace the timer or contact Alliance Laundry Systems Service Department to verify that all checks have been done correctly.

Customer

CHM514S

16 F232202R4

No Hot Fill Hose (Coin) Illustration

CHM277S

HOT WATER VALVE

SUPPLY DISPENSER

VACUUM BREAKER

YV1 VALVE PORT / SOLENOID

YV9 VALVE PORT / SOLENOID

Troubleshooting

Please refer to the following 2 pages for wiring diagram information.

F232202R4 17

Troubleshooting

2A, 4A and 5A

No Hot Fill Analysis (Coin) (Sheet 1 of 2)

NOTE: Refer to the wiring diagram supplied with your machine.

18 F232202R4

No Hot Fill Analysis (Coin) (Sheet 2 of 2)

CHM276S

0636156(H)

1A

2A

6A

5A

4A

1A

3A

1A

Troubleshooting

F232202R4 19

Troubleshooting

CHM515S

No Cold Fill Analysis (OPL)

YES

With the water turned on to the machine and a cycle started, no cold water is filling the machine.

*Note: All voltage readings are approximate.

Is there

voltage (120 or 220

Volts* AC) at the YV2

valve solenoid across

wires V2 (hot) and VN1 J9-1-9

(neutral) and at the YV10

valve solenoid across

wires V10 (hot) and

VN1 J9-1-9

(neutral)?

5A

NO

Check all hoses for blockage between the YV2 and YV10 valve ports and through the supply dispenser, including through the vacuum breaker.

If there is no blockage, replace the entire cold water valve or install a repiar kit onto the YV2 and/or YV10 valve ports. Please note that the valve solenoid isn’t available as a service part.

Please refer to the “No Cold Fill Hose (OPL)” illustration for hose location clarification.

YES

NO

Is there

voltage (120 or 220

Volts* AC) from 4a on

the timer to

terminal

strip 29**?

Repair and/or replace the wire from 4a on the timer to

terminal strip 16

. This

wire is called 45.

Assuming that all checks were done properly, replace the timer or contact Alliance Laundry Systems’ Customer Service Department to verify that all checks have been done correctly.

** Note: All voltage readings should be taken from

terminal strip 29** as a neutral point.

4A

1A

YES

2A

Is

there voltage (120 or 220 Volts* AC) from terminal strip 16

to terminal strip 29**?

NO

3A

Repair and/or replace the wire from terminal strip 16 to the YV1 and/or YV9 valve solenoids as needed.

Please note that the wire goes through valve harness connector J9-1-7.

3. No Cold Fill Analysis (OPL)

20 F232202R4

No Cold Fill Hose (OPL) Illustration

CHM280S

COLD WATER VALVE

SUPPLY DISPENSER

VACUUM BREAKER

YV2 VALVE PORT / SOLENOID

YV10 VALVE PORT / SOLENOID

Troubleshooting

Please refer to the following 2 pages for wiring diagram information.

F232202R4 21

Troubleshooting

4

2A and 4A

No Cold Fill Analysis (OPL) (Sheet 1 of 2)

NOTE: Refer to the wiring diagram supplied with your machine.

22 F232202R4

No Cold Fill Analysis (OPL) (Sheet 2 of 2)

CHM284S

0635913(E)

2A

4A

5A

3A

1A

Troubleshooting

F232202R4 23

Troubleshooting

CHM516S

No Cold Fill Analysis (Coin)

YES

With the water turned on to the machine and a cycle started, no cold water is filling the machine.

*Note: All voltage readings are approximate.

Is there voltage (120

or 220 Volts* AC) at the YV2

valve solenoid across

wires V2 (hot) and VN2

(neutral) and at the YV10

valve solenoid across

wires V10 (hot) and VN10

(neutral)?

3A

NO

Check all hoses for blockage between the YV2 and YV10 valve ports and through the supply dispenser, including through the vacuum breaker.

If there is no blockage, replace the entire cold water valve or install a repiar kit onto the YV2 and/or YV10 valve ports. Please note that the valve solenoid isn’t available as a service part.

Please refer to the “No Cold Fill Hose (Coin)” illustration for hose location clarification.

YES

NO

Is there voltage (120 or 220

Volts* AC) from 4a on

the timer to input

connector J9-3-1**?

Repair and/or replace the wire from 4a on the timer to the YV2 and/or YV10 valve solenoids as needed.

Please note that this wire goes through valve harness connector J9-1-7.

Assuming that all checks were done properly, replace the timer or contact Alliance Laundry Systems’ Customer Service Department to verify that all checks have been done correctly.

** Note: All voltage readings should be taken from input connector J9-3-1 as a neutral point.

2A

1A

4. No Cold Fill Analysis (Coin)

24 F232202R4

No Cold Fill Hose (Coin) Illustration

YV10 VALVE PORT / SOLENOID

COLD WATER VALVE

YV2 VALVE PORT / SOLENOID

VACUUM BREAKER

Troubleshooting

SUPPLY DISPENSER

CHM280S

Please refer to the following 2 pages for wiring diagram information.

F232202R4 25

Troubleshooting

2A

No Cold Fill Analysis (Coin) (Sheet 1 of 2)

NOTE: Refer to the wiring diagram supplied with your machine.

26 F232202R4

No Cold Fill Analysis (Coin) (Sheet 2 of 2)

CHM279S

0636156(H)

1A

2A

1A

3A

1A

Troubleshooting

F232202R4 27

Troubleshooting

CHM517S

No Supply 2 Fill Analysis (OPL)

1A

YES

With the machine beginning the wash step, no water is coming into the supply compartment #2. Please be sure that all other cycle steps have been performed properly up to the wash. Please refer to the "Cycle Timer Wash Step" illustration for timer position clarification.

Note: The following voltage readings must be taken within 30-60 seconds from the start of the wash step, as close as possible to the start of the wash step. The bleach light will be lit at this time.

*Note: All voltage readings should be taken from terminal 29 as a neutral point. **Note: All voltage readings are approximate.

Is there voltage (120 or

220 Volts** AC) at the YV4

valve solenoid across

wires V4 (hot) and VN1

J9-1-9 (neutral)?

NO

Check all hoses for blockage between the YV4 valve port and the supply dispenser, including through the vacuum breaker.

If there is no blockage, replace the entire cold water valve or install a repair kit onto the YV4 valve port. Please note that the valve solenoid isn't available as a service part.

Please refer to the "Supply 2 Fill Hose" illustration for hose location clarification.

YES

Is there voltage (120 or

220 Volts** AC) from

terminal strip 13 to

terminal strip 29*?

NO

Check the wiring between terminal strip 13 and the YV4 valve solenoid. Repair and/or replace the wire as needed.

YES

Is there voltage (120 or 220

Volts** AC) from 6b on

the timer to terminal

strip 29*?

NO

Repair and/or replace the wire between 6b on the timer and terminal strip 13 as needed.

Assuming that all checks were done properly, replace the timer or contact Alliance Laundry Systems' Customer Service Department to verify that all checks have been done correctly.

Please remember that all voltage readings must be taken within 30-60 seconds from the start of the wash step.

2A

3A

4A

5A

5. No Supply 2 Fill Analysis (OPL)

28 F232202R4

Unimac UC27MN2-Extractor Parts Diagram

Specifications and Main Features

Frequently Asked Questions

User Manual

Safety Information

General Safety Precautions

Important Safety Instructions

Locating an Authorized Servicer

Customer Service

Introduction

Nameplate Location

Model Identification

Theory of Operation

Starting the Machine

Fill

Supply

Drain

Extract

Wash

Troubleshooting

1. No Hot Fill Analysis (OPL)

2. No Hot Fill Analysis (Coin)

3. No Cold Fill Analysis (OPL)

4. No Cold Fill Analysis (Coin)

5. No Supply 2 Fill Analysis (OPL)