Unimac UUT30L Tumbler-Dryer Parts Diagram

Tumble Dryers

30 Pound Stack

Through Serial No. 0602004143

Refer to Page 5 for Model Numbers

25

25

T464PZ3A

			www.alliancelaundry.com	Part No. 70291301R3
				December 2016

<![if ! IE]>

<![endif]>Troubleshooting

Table of

Contents

Section 1 – Safety Information ...............................................................		5
Locating An Authorized Service Person ...............................................		6
Safety Warnings and Decals..................................................................		7
Safety Precautions for Servicing Tumble Dryers..................................		7
Section 2 – Introduction ..........................................................................		8
Model Identification ..............................................................................		8
Serial Plate Location..............................................................................		9
Customer Service...................................................................................		9
Wiring Diagram.....................................................................................		9
How A Tumble Dryer Works ..............................................................		10
Section 3 – Troubleshooting..................................................................		11
1.	Tumble Dryer Does Not Start .....................................................	12
2.	Motor Does Not Start..................................................................	13
3.	Motor Overload Protector Cycles Repeatedly ............................	14
4.	Motor Runs But Cylinder Does Not Turn...................................	15
5.	Motor Does Not Stop ..................................................................	16
6.	Burner Does Not Ignite ...............................................................	17
7.	Burner Ignites and Goes Out Repeatedly....................................	20
8.	Burner Does Not Shut Off ..........................................................	21
9.	Clothes Do Not Dry ....................................................................	22
10.	Tumble Dryer Overheating .........................................................	24
11.	Burner Not Burning Properly......................................................	25
12.	Loading Door Opens During Operation......................................	26
13.	Cylinder Continues to Spin with Door Open..............................	27
14.	Coin Does Not Fall into Coin Vault or Coin Drop Sensor
	Does Not Register That Coin Has Been Entered ........................	28
Section 4 – Adjustments ........................................................................		31
15.	Troubleshooting and Cleaning Coin Drop ..................................	31
16.	Troubleshooting Coin Drop ........................................................	31
17.	Cleaning Coin Drop ....................................................................	31
Section 5 – Electronic Control Troubleshooting.................................		35
18.	Theory of Operation of Instant Electronic Ignition ....................	35
19.	Cannot Perform Infrared (IR) Communication...........................	36
20.	Coins Ignored When Entered......................................................	37
21.	Control Display – Door Open Light “On” ..................................	38
22.	Control Display – “door” Error on 25, 30, Stacked 30 and
	35 Pound Tumble Dryers with 24 Volt EDC Controls ...............	39
23.	Control Display – No Visible Display – OPL Microprocessor
	Models.........................................................................................	40
24.	Control Display – No Visible Display – Power On....................	41
25.	Will Not Start – Electric – Manual Timer...................................	42
26.	Will Not Start – Electric – Rotary Coin Drop.............................	43
27.	Will Not Start – Gas – Manual Timer.........................................	45
28.	Will Not Start – Gas – Rotary Coin Drop...................................	46

© Copyright 2016, Alliance Laundry Systems LLC

All rights reserved. No part of the contents of this book may be reproduced or transmitted in any form or by any means without the expressed written consent of the publisher.

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1

29.	Will Not Start – Steam – Manual Timer .....................................	48
30.	Will Not Start – Steam – Rotary Coin Drop ...............................	49
31.	Will Not Start/Continue Running – EDC Control ......................	51
32.	Will Not Start/Continue Running – OPL Microprocessor
	Control ........................................................................................	54
33.	Will Not Run – Electric – Manual Timer ...................................	57
34.	Will Not Run – Electric – Rotary Coin Drop..............................	60
35.	Will Not Run – Gas – Manual Timer..........................................	63
36.	Will Not Run – Gas – Rotary Coin Drop....................................	65
37.	Will Not Run – Steam – Manual Timer......................................	67
38.	Will Not Run – Steam – Rotary Coin Drop................................	69
39.	Will Not Heat – Electric – Manual Timer...................................	71
40.	Will Not Heat – Electric..............................................................	73
41.	Will Not Heat – Electric – Rotary Coin Drop (With and
	Without Time Delay Board) .......................................................	75
42.	Will Not Heat – Electric/Gas – OPL Microprocessor.................	77
43.	Will Not Heat – Gas – EDC Models...........................................	80
44.	Will Not Heat – Gas – Manual Timer.........................................	82
45.	Will Not Heat – Gas – Rotary Coin Drop...................................	84
46.	Will Not Heat – Steam – EDC Models .......................................	86
47.	Will Not Heat – Steam – Manual Timer .....................................	88
48.	Will Not Heat – Steam – OPL Microprocessor ..........................	90
49.	Will Not Heat – Steam – Rotary Coin Drop ...............................	93
Section 6 – Micro Display Control Troubleshooting ..........................		95
50.	Coins Ignored When Entered......................................................	95
51.	Control Has No Display..............................................................	96
52.	Door Open Indicator ...................................................................	98
53.	Motor Will Not Start/Run .........................................................	100
54.	Unit Will Not Heat – Gas..........................................................	104
55.	Unit Will Not Heat – Steam......................................................	107
56.	Unit Will Not Heat – Electric ...................................................	110
57.	Error Codes ...............................................................................	113
Gas Models
Schematic ........................................................................................		114
Connection Diagram .......................................................................		115
Steam Models
Schematic ........................................................................................		116
Connection Diagram .......................................................................		117
Electric Models
Schematic ........................................................................................		118
Connection Diagram .......................................................................		119
Section 7 – NetMaster Troubleshooting ............................................		120
58.	No IR Communication..............................................................	120
59.	Coins Ignored When Entered....................................................	121
60.	Control Has No Display............................................................	122
61.	Door Open Indicator .................................................................	125
62.	Motor Will Not Start/Run .........................................................	128

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70291301

63.	Unit Will Not Heat – Gas..........................................................	134
64.	Unit Will Not Heat – Steam......................................................	138
65.	Unit Will Not Heat – Electric ...................................................	142

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Notes

4

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70291301

Section 1

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 an imminently hazardous situation that, if not avoided, will cause severe personal injury or death.

WARNING

Warning indicates a hazardous situation that, if not avoided, could cause severe personal injury or death.

CAUTION

Caution indicates a hazardous situation that, if not avoided, may cause minor or moderate personal injury or property damage.

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.

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

WARNING

•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

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Safety Information

IMPORTANT INFORMATION: During the lifetime of a tumble dryer, it may require service. The information contained in this manual was written and is intended for use by qualified service technicians who are familiar with the safety procedures required in the repair of a tumble dryer, and who are equipped with the proper tools and testing equipment.

WARNING

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

•Disconnect electric power to the tumbler before servicing.

•Never start the tumbler with any guards/ panels removed.

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

W240

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

CAUTION

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

NOTE: The WARNING and IMPORTANT instructions appearing in this manual are not meant to cover all possible conditions and situations that may occur. It must be understood that common sense, caution and carefulness are factors which CANNOT be built into this tumble dryer. These factors MUST BE supplied by the person(s) installing, maintaining or operating the tumble dryer.

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

Locating An Authorized Service

Person

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.

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70291301

Safety Warnings and Decals

SAFETY WARNINGS and decals have been provided in key locations to remind you of important precautions for the safe operation and maintenance of your tumble dryer. Please take the time to review these warnings before proceeding with service work.

All decals have been designed and applied to withstand washing and cleaning. Decals should be checked periodically to be sure they have not been damaged, removed, or painted.

Safety Information

Safety Precautions for Servicing Tumble Dryers

Prior to servicing tumble dryer:

•Disconnect electrical service and “lockout” to prevent unintentional connection.

•Shut off supply gas valve.

•Allow machine to cool prior to servicing.

After servicing tumble dryer:

•Control/access panels must be reinstalled.

•Motor/drive/belt guards must be reinstalled.

•Contactor/junction/accessory box covers must be reinstalled.

•Use a non-corrosive leak detection solution to check all pipe connections for gas leaks. DO NOT USE AN OPEN FLAME TO CHECK FOR GAS LEAKS!

•The loading door switch, lint door switch and airflow switch must be operating properly.

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7

Section 2

Introduction

Model Identification

Information in this manual is applicable to these models:

		Gas		Steam	Electric
	CHD30STG2-CAT30L	HTT30L	PUT30L	CHD30STS2-CTT30S	CHD30STE2-CTT30E
	CHD30STG2-CAT30N	HTT30N	PUT30N	CHD30STS2-CUT30S	CHD30STE2-CUT30E
	CHD30STG2-CTT30L	HUT30L	SAT30L	DRST30S2-BTT30S	DRST30E2-BTT30E
	CHD30STG2-CTT30N	HUT30N	SAT30N	DRST30S2-BUT30S	DRST30E2-BUT30E
	CHD30STG2-CUT30L	IPD30STG2-ITT30L	STT30L	HTT30S	HTT30E
	CHD30STG2-CUT30N	IPD30STG2-ITT30N	STT30N	HUT30S	HUT30E
T30	DRST30G2-BAT30L	LTT30L	SUT30L	IPD30STS2-ITT30S	IPD30STE2-ITT30E
	DRST30G2-BAT30N	LTT30N	SUT30N	PTT30S	PTT30E
	DRST30G2-BTT30L	MTT30N	UAT30L	PUT30S	PUT30E
	DRST30G2-BTT30N	NTT30N	UAT30N	STT30S	STT30E
	DRST30G2-BUT30L	PAT30L	UTT30L	SUT30S	SUT30E
	DRST30G2-BUT30N	PAT30N	UTT30N	UTT30S	UTT30E
	HAT30L	PTT30L	UUT30L	UUT30S	UUT30E
	HAT30N	PTT30N	UUT30N
	HTT30D

Includes models with the following control suffixes:

3O	– DX4 OPL	CX – prep for coin drop	NX – NetMaster coin ready
3V	– DX4 vended	CY – prep for card	NY – NetMaster card ready
3X	– DX4 prep for coin	EC – EDC electronic coin	OM – OPL micro
BC – basic electronic, coin		EX – EDC coin ready	ZC – NetMaster coin network
BL – basic electronic, central pay		EY – EDC card ready	ZR – NetMaster card network
BX – basic electronic, prep for coin		MT – manual timer	ZX – NetMaster coin ready network
BY – basic electronic, prep for card		NC – NetMaster coin	ZY – NetMaster card ready network
CD – rotary coin drop		NR – NetMaster card

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70291301

Introduction

Serial Plate Location

When calling or writing for information about your product, be sure to mention model and serial numbers. Model and serial numbers are found on the serial plate on the rear of the machine and inside the upper loading door hinge.

					ANS 72152
					CLOTHES DRYER.
MODEL NO:					VOL II
SERIAL NO:					TESTED FOR NATURAL &
					LIQUID PETROLEUM GASSES
	V-/		HERTZ/	PHASE	CGA 72
	AMPS,	WIRES + GROUND
TOTAL kW,			MOTOR kW		AMPLFIEDRER
REQ'D CIRCUIT BREAKER:				AMPS
FAN OUTPUT:
@MAX	"WC STATIC PRESSURE
EQUIPPED FOR:			GAS@	"WC MANIFOLD PRESS.
MIN SUPPLY	"WC.		MAX SUPPLY		"WC.
PRESSURE:			PRESSURE:
INPUT:	BTU/hr @		BTU/cu.ft.
MADE IN U.S.A./FABRIQUE AU ETATS
					TMB1961P

Customer Service

If literature or replacement parts are required, contact the source from which the machine was purchased or contact Alliance Laundry Systems at [phone] for the name and address of the nearest authorized parts distributor.

For technical assistance, call [phone].

Wiring Diagram

The wiring diagram is located inside the contactor or junction box.

Models starting Serial No. 0309____ or later will have the wiring diagram part number in the lower portion of the electrical data on the serial plate.

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9

Introduction

How A Tumble Dryer Works

1

2

3

T002CE3A

A tumble dryer uses heated air to dry loads of laundry.

1When the motor is started, the exhaust fan pulls room temperature air in through the air intake at the rear of the tumble dryer and over the heat source (burner flame for gas, heating element for electric, and coil for steam).

2The heated air moves into the cylinder, where it is circulated through the wet load by the tumbling action of the cylinder.

3The air then passes through the lint filter, exhaust fan, and is vented to the outdoors.

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70291301

Section 3

Troubleshooting

WARNING

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

•Disconnect electric power to the tumble dryer before servicing.

•Close gas shut-off valve to gas tumble dryer before servicing.

•Close steam valve to steam tumble dryer before servicing.

•Never start the tumble dryer with any guards/panels removed.

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

W002R1

IMPORTANT: Refer to wiring diagram for aid in testing tumble dryer components.

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11

Troubleshooting

1. Tumble Dryer Does Not Start

	Tumbler Does
	Not Start
	Is motor			Is the
		Yes	Test relay and	PUSH-TO-
	relay
			replace if	START button
	inoperative?
			necessary.	not properly
				activated
				(Manual Timer
	No			Models)?
	Is	Yes	Close loading	No
	loading door		door
	open?		completely.
	No			Is the
				electrical power
				off or circuit
	Is			breaker or fuse
				blown?
	drying timer in	Yes	Turn drying
	an off position
			timer on.
	(Manual Timer			No
	Models)?
	No			Is the lint
				drawer
				open?
	Is there an		Check that	No
	incorrect	Yes
			proper amount
	amount of coins
			of coins are
	inserted into
			inserted.
	coin drop?
				Is there a
	No			blown fuse
				on tumbler?
	Is coin drop	Yes	Test coin drop
			and replace if
	inoperative?
			inoperative.
	No

Press and Yes hold PUSH-TO- START button

for three seconds.

Yes		Check power
		supply, or
		replace fuses.

Yes		Close and
		lock lint
		drawer.

Check fuse Yes (in junction box)

and replace if necessary.

TMB2207S

12

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70291301

							Troubleshooting
	2. Motor Does Not Start
	Motor Does
	Not Start			Is there
					Yes
				broken, loose,			Refer to wiring
				or incorrect			diagram.
				wiring?
	Is the		Check power	No
	electrical power	Yes
	off or circuit		supply, or replace
	breaker fuse		fuses.	Is
	blown?			the fan or fan	Yes		Replace fan or
				motor			motor assembly.
				binding?
	No
	Is the			No
	loading door		Close door,
	switch or lint
		Yes	drawer or test	Is the
	drawer switch not		switch and		Yes		Replace cylinder,
	closed or switch			cylinder or
			replace if				bearing, rollers, or
	inoperative?			cylinder motor
			inoperative.				motor assembly.
				binding?
	No			No
	Is the		Refer to Installation	Is the
	door switch	Yes			Yes		Test and replace if
			Manual for door	transformer
	improperly
	adjusted?		switch adjustment.	inoperative?			necessary.
	No			No
			Press and hold	Is the	Yes
	Is the start	Yes		motor relay		Test relay and replace
			PUSH-TO-START
	circuit not			inoperative?			if inoperative.
			button for three
	complete?
			seconds.
				No
	No
				Is the
	Is the motor	Yes	Have motor tested	airflow switch	Yes		Test switch,
			and replace if	inoperative			replace or adjust
	inoperative?
			inoperative.	(Hyrid Timer			as required.
				Models)?
	No						TMB2208S

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13

Troubleshooting

3. Motor Overload Protector Cycles Repeatedly

Motor Overload

Protector

Cycles

Repeatedly

Refer to

Is voltage

Yes

Installation

Manual for

correct?

electrical

No

requirements.

Is clothes

Yes

Remove part of

load too

load.

large?

No

Is clothes

Yes

Check cylinder

cylinder

for binding.

binding?

No

Check with

Yes

local power

Is wiring

company to

adequate?

ensure that

wiring is

adequate.

No

Refer to

Is make-up

Yes

Installation

Manual for

air adequate?

make-up air

requirements.

No

Clean lint

Is there lint

accumulation

Yes

on and around

buildup around

the motors.

tumbler or poor

maintenance?

Is there

Yes

broken, loose

Refer to wiring

No

or incorrect

diagram.

wiring?

TMB1904S

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70291301

Troubleshooting

4. Motor Runs But Cylinder Does Not Turn

Motor Runs

But Cylinder

Does Not Turn

	Is cylinder	Yes		Replace
	belt
				cylinder belt.
	broken?

No

Is cylinder	Yes		Check cylinder
binding?			for binding.

TMB1905S

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15

Troubleshooting

5. Motor Does Not Stop

Motor Does

Not Stop

	Is the door				Test switches
	switch or lint		Yes
	drawer switch				and replace if
	not working				inoperative.
	properly?
		No

Is coin drop			Yes		Test coin drop
not working					and replace if
properly?					inoperative.
	No
Is wiring		Yes			Refer to wiring
					diagram.
incorrect?
	No
Is electronic			Yes		Replace
control					electronic
inoperative?					control.
	No
Is motor			Yes		Test relay and
relay					replace if
inoperative?					inoperative.

TMB1906S

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70291301

Troubleshooting

6. Burner Does Not Ignite

	Burner Does			Is
	Not Ignite
				stove limit
				thermostat 2
				inoperative?
	Is there		Refer to
			Installation
	an improper or	Yes
			Manual for	No
	inadequate exhaust
	system?		exhaust system
			requirements.
	No			Is
				there an
				insufficient gas
	Are there			supply?
	blown fuses or	Yes	Check fuses or
	tripped circuit breakers		circuit breaker.
	in external electric			No
	supply line?
	No
	Is			Are the
	drying
	selector in the	Yes	Reset switch on	orifices
				incorrect?
	“Cool Down”		microprocessor.
	portion of
	cycle?			No
	No
	Is		Test thermostat	Is there
	the cabinet	Yes
	thermostat		and replace if	lint
	inoperative?		inoperative.	buildup?
				No
	No
	Is			Is there
	stove limit	Yes	Test thermostat 1	inadequate
	thermostat 1		and replace if	ductwork and
	inoperative?		inoperative.	make-up
				air?
	No			No

Yes Test thermostat 2 and replace if

inoperative.

Open partially closed gas shut-off valve, or correct low gas pressure. Check manifold pressure

Yes and adjust to

pressure specified on serial plate. If

pressure cannot be obtained, have your local gas company check main gas pressure.

Tumbler is equipped for type of gas specified on serial

Yes plate. If orifices are different from that specified on serial plate, obtain and

install correct orifices.

Clean lint compartment. Check

Yes damper for lint accumulation. Check

ductwork for lint buildup.

Refer to Installation Manual to ensure

Yes that ductwork and make-up air

openings are sized accurately.

Continued on next page

TMB2209S-a

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17

Troubleshooting

6. Burner Does Not Ignite (continued)

Continued from previous page

Is the

Yes

Test switch

airflow switch

and replace

inoperative?

if inoperative.

No

Is the lint

Yes

Unlock and open

drawer not

lint drawer. Close

closed

drawer ensuring a

properly?

tight fit, then lock.

No

Is

Refer

there broken,

Yes

loose or incorrect

to wiring

wiring?

diagram.

No

Is

Clearance

there an

Yes

should be

improper igniter

0.110 - 0.140

to burner tab

inch (2.79 - 3.55

clearance?

mm).

No

Are valve coils

Yes

Check valve

coils and

inoperative?

replace if

necessary.

No

Is

Check fuse

there a blown Yes (located in control box)

fuse on

tumbler?

and replace if necessary.

	No
Is
gas shut-off		Yes
				Open shut-
valve in the
				off valve.
closed
position?
	No

Is the ground wire from Instant Electronic Ignition (IEI) board not connected to ground terminal?

No

Is the IEI control inoperative?

No

Is motor switch inoperative?

No

Continued on next page

Yes

Connect

ground wire to ground terminal.

Yes

Replace IEI

control.

Yes

Replace motor.

TMB2209S-b

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70291301

Troubleshooting

6. Burner Does Not Ignite (continued)

Continued from previous page

Is there

Yes

an inoperative

Test and replace

microprocessor or

as needed.

hybrid timer?

No

Is

Check incoming

wrong

transformer

Yes

voltage and install

configuration

correct

harness

configuration

installed?

harness.

No

Reset IEI control by

opening and closing

Is Instant

loading door. (Non-

CE models only)

Electronic

Yes

Ignition (IEI)

Reset IEI by

control in safety

pressing reset

lockout?

button on back of

unit. (CE models

only)

TMB2209S-c

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19

	Troubleshooting
	7. Burner Ignites and Goes Out Repeatedly
	Burner Ignites and
	Goes Out Repeatedly
				Is there	Yes	Refer to wiring
				broken, loose or
				incorrect		diagram.
	Is there	Yes	Check gas	wiring?
	insufficient gas		supply and
	pressure?
			pressure.	No
	No			Is	Yes	Clearance
				there excessive		should be
	Is the cabinet	Yes	Test thermostat	igniter to burner		0.110 - 0.140 inch
				clearance?		(2.79 - 3.55 mm).
	thermostat		and replace if
	inoperative?		inoperative.
				No
	No			Is
						Refer to
	Is			there	Yes
						Installation Manual
	stove limit	Yes	Test thermostat 1	inadequate
						for make-up air
	thermostat 1		and replace if	make-up air?
						requirements.
	inoperative?		inoperative.
	No			No
	Is		Test thermostat 2	Is the
	stove limit	Yes			Yes	Replace
	thermostat 2		and replace if	thermistor
						thermistor.
	inoperative?		inoperative.	inoperative?
	No			No
	Is the	Yes	Refer to
	exhaust system		Installation Manual	Is the control	Yes
			for exhaust system
	improper or			heater relay		Replace control.
	inadequate?		requirements.	malfunctioning?
	No			No
			Tumbler is equipped for
	Does	Yes	type of gas specified on	Are the
	tumbler have		serial plate. If orifices		Yes	Repair damper to
	improper		are different from that	back draft dampers
	orifices?		specified on serial plate,	locked in closed		working order.
			obtain and install	position?
	No		correct orifices.
						TMB1908S

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70291301

Troubleshooting

8. Burner Does Not Shut Off

Burner Does

Not Shut Off

Are there impurities on gas valve seat, preventing valve from closing?

No

Is wiring correct?

No

Is control heater relay malfunctioning?

Yes		Replace gas
		valve.

Yes	Refer to wiring
	diagram.

Yes Replace

control.

TMB1909S

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Troubleshooting

9. Clothes Do Not Dry

Clothes Do Not
Dry
			Does		Refer to
					Burner Ignites
			the burner ignite	Yes
Is there					and Goes Out
		Start cycle again	and go out
enough heating	No		repeatedly?		Repeatedly
		with enough time to
time allocated for					flowchart.
the load?		dry load.
			No
Yes			Is
					Set selector
			the drying	Yes
					for higher
			selector
					setting.
Is the burner	No	Refer to	improperly
igniting?		Burner Does Not	set?
		Ignite flowchart.
			No
Yes			Is	Yes	Refer to Installation
			the voltage		Manual for electrical
Is there			incorrect?		requirements.
	Yes
too much water in		Remove excess
articles being		water.	No
dried?
No			Is there	Yes	Refer to Installation
			inadequate		Manual for make-up
			make-up		air requirements.
		Remove part of	air?
Is	Yes	load. Maximum	No
the clothes		load is 30 pound
load too		dry weight (cotton
large?		load) for 30 pound	Is the
		Tumbler, etc.		Yes
			exhaust duct to		Clean duct to
No			the outside		remove blockage.
			blocked?
Is the		Refer to Installation	No
exhaust system	Yes
improper or		Manual for exhaust
		system equirements.
inadequate?
			Continued on
			next page
No
					TMB2210S-a

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Troubleshooting

9. Clothes Do Not Dry (continued)

	Continued from
	previous page
	Is the lint screen	Yes	Clean lint screen.	Is the	Yes	Adjust damper so it
	clogged?			exhaust
				damper		turns freely.
				binding?
	No			No
	Is the thermistor	Yes		Is the		Check belt is not
			Replace thermistor.		Yes	riding on outer
	inoperative?			cylinder speed
						diameter of motor
				too fast?
						pulley.
	No

TMB2210S-b

70291301

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23

Troubleshooting

10. Tumble Dryer Overheating

Tumbler

Overheating

Does tumbler

have incorrect Yes main burner

orifices?

No

Is gas

pressure too high or Yes low?

No

Is the

Yes

make-up air inadequate?

No

Is there		Yes
lint buildup?
	No

Is the

exhaust system Yes restricted or inadequate?

No

				Check wiring to
		Is the		ensure thermistor
				is connected.
		thermistor
			Yes	Replace
		sensor
				thermistor if
		inoperative?
				necessary.
	Obtain and install
				Remove lint build-
	correct orifices.
				up on thermistor.
		No
		Is the		Adjust damper
		exhaust	Yes
				so it turns
		damper
				freely.
		binding?
	Adjust gas pressure
	as specified on	No
	serial plate.
		Is the
		control heater	Yes
		relay		Replace control.
		malfunctioning?
	Refer toInstallation
	Manual for make-up
	air requirements.	No
		Are
		the safety covers	Yes
		missing, allowing		Replace covers.
	Clean lint	cool air to enter
	compartment. Check	tumbler?
	damper for lint
	accumulation. Check	No
	ductwork for lint
	buildup.
		Is the
		lint screen	Yes	Replace lint
		clogged with
				screen.
		fabric
	Remove obstruction
		softener?
	or lint build up from
	exhaust ductwork.
	Refer toInstallation	No
	Manual for exhaust
	system	Are there
	requirements.			Repair/replace
		holes in cabinets	Yes
				cabinet
		due to foreign
				components.
		objects?
				TMB1911S

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© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT

70291301

Troubleshooting

11. Burner Not Burning Properly

Burner Not Burning

Properly

Is there lint/dirt in burner tube?

No

Is the gas pressure too high or low?

No

Does

the tumbler have incorrect orifices?

No

Is the exhaust duct restricted or blocked?

No

		Disassemble	Is
	Yes		the airflow
		burner and		Yes	Replace airflow
			switch not
		blow out lint/dirt.	functioning		switch.
			properly?
			No
		Check serial
	Yes	plate on back of	Is there	Yes	Refer to
		tumbler for	inadequate		Installation Manual
		correct gas	make-up		for make-up air
		pressure.	air?		requirements.
		Tumbler is equipped	No
		for the type of gas
		specified on serial
	Yes	plate. If orifices are
		different from that
		specified on serial	Is there lint buildup	Yes	Clean off lint.
		plate, obtain and	around gas valve
		install correct	spud?
		orifices.
	Yes	Disassemble
		and clean
		exhaust system.
				TMB2211S

70291301

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25

Troubleshooting

12. Loading Door Opens During Operation

Loading Door

Opens During

Operation

	Is tumbler		Yes
	improperly
	leveled?
		No
	Is clothes		Yes
	load too
	large?
		No

Is loading

door strike Yes adjusted

incorrectly?

Refer to Installation Manual for leveling leg adjustment.

Remove part of load and restart tumbler.

Refer to

Adjustments Section for strike adjustment.

TMB1913S

NOTE: All tumble dryer panels must be in place and on the machine for proper operation.

26

© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT

70291301

Troubleshooting

13. Cylinder Continues to Spin with Door Open

Cylinder

Continues To

Spin With Door

Open

	Is door		Yes		Replace
	switch
					door switch.
	inoperative?
		No

Is	Yes		Replace relay
motor relay
			in control box.
inoperative?

TMB2186S

NOTE: All tumble dryer panels must be in place and on the machine for proper operation.

70291301

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27

Troubleshooting

14.Coin Does Not Fall into Coin Vault or Coin Drop Sensor Does Not Register That Coin Has Been Entered

Coin Does Not Fall

Into Coin Vault or Coin

Drop Sensor Does Not

Register That Coin

Has Been Entered

Is proper

electrical

No

power supplied to coin drop?

Yes
Is	No
machine
level?

	Yes
	Is coin	No
	drop
	clean?
	Yes
	Is sensor	No
	operative?

Incorrect electrical connection may prevent coins from registering in coin drop. Refer to wiring diagram.

Machines that are not level may prevent coins from following through required check stages of drop. Refer to

Installation Manual for instructions on leveling machine.

Residue or lint build-up may prevent coins from following through required check stages of drop. Clean coin drop.

Replace coin drop sensor.

TMB1915S

IMPORTANT: Never use oil to correct coin drop problem. Oil residue will prevent coins from rolling properly.

IMPORTANT: Do not bend or damage mechanical parts within coin drop.

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