Alliance Laundry Systems DT0220SRG, DC0220SFG, DC0220SRG, DT0220SFG, JC0220SFG Troubleshooting Manual

Drying Tumblers

Refer to Page 3 for Model Identification

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Troubleshooting

T478C

Keep These Instructions for Future Reference.

(If this machine changes ownership, this manual must accompany machine.)

www.comlaundry.com

T477C

Part No. 70172201

November 2001

Table of

Contents

Introduction......................................................................................... 3

Model Identification ............................................................................. 3

Theory of Operation of Instant Electronic Ignition .............................. 3

Safety Information.............................................................................. 5

Cannot Perform Infrared (IR) Communication.............................. 7

Coins Ignored When Entered ............................................................ 9

Control Display ................................................................................... 11

Door Open Light “On” ......................................................................... 11

No Visible Display – OPL Microprocessor Models............................. 12

No Visible Display – Power On ........................................................... 13

Will Not Start ...................................................................................... 15

Electric.................................................................................................. 15

Manual Timer................................................................................... 15

Rotary Coin Drop............................................................................. 16

Gas ........................................................................................................ 18

Manual Timer................................................................................... 18

Rotary Coin Drop............................................................................. 19

Steam .................................................................................................... 21

Manual Timer................................................................................... 21

Rotary Coin Drop............................................................................. 22

Will Not Start/Continue Running ..................................................... 25

EDC Control ......................................................................................... 25

OPL Microprocessor Control ............................................................... 28

Will Not Run ....................................................................................... 31

Electric.................................................................................................. 31

Manual Timer................................................................................... 31

Rotary Coin Drop............................................................................. 34

Gas ........................................................................................................ 37

Manual Timer................................................................................... 37

Rotary Coin Drop............................................................................. 39

Steam .................................................................................................... 41

Manual Timer................................................................................... 41

Rotary Coin Drop............................................................................. 43

Will Not Heat....................................................................................... 45

Electric.................................................................................................. 45

Manual Timer................................................................................... 45

Rotary Coin Drop............................................................................. 47

Rotary Coin Drop (with and without time delay board) ................. 49

Electric/Gas........................................................................................... 51

OPL Microprocessor........................................................................ 51

Gas ........................................................................................................ 54

EDC Models..................................................................................... 54

Manual Timer................................................................................... 56

Rotary Coin Drop............................................................................. 58

means without the expressed written consent of the publisher.

70172201

1

Steam .................................................................................................... 60

EDC Models..................................................................................... 60

Manual Timer................................................................................... 62

OPL Microprocessor........................................................................ 64

Rotary Coin Drop............................................................................. 67

2

70172201

Introduction

Model Identification

Information in this manual is applicable to these tumbler models:

Gas Steam/Thermal Oil Electric

25 Pound

(220 Liter)

30 Pound

(270 Liter)

30 Pound

Stacked

(300 Liter)

35 Pound

(350 Liter)

DC0220SFG DC0220SRG DT0220SFG DT0220SRG

JC0220SFG JC0220SRG

DC0270SFG DC0270SRG DT0270SFG DT0270SRG

JC0270SFG JC0270SRG

DC0300DFG DC0300DRG DT0300DFG DT0300DRG

JC0300DFG

JC0300DRG

JT0300DFG

AT0350SRG DC0350SFG

DC0350SRG

DT0350SFG

DT0350SRG

JC0350SFG

JC0350SRG

JT0220SFG

JT0220SRG SC0220SFG SC0220SRG ST0220SFG ST0220SRG

JT0270SFG JT0270SRG SC0270SFG SC0270SRG ST0270SFG ST0270SRG

JT0300DRG

NT0300DRG

SC0300DFG

SC0300DRG

ST0300DFG ST0300DRG

JT0350SFG JT0350SRG SC0350SFG

SC0350SRG

ST0350SFG

ST0350SRG

DC0220SSL DT0220SSH DT0220SSL

JC0220SSL JT0220SSH

DC0270SSL DT0270SSH DT0270SSL

JC0270SSL JT0270SSH

DC0300DSL DT0300DSH DT0300DSL

JC0300DSL

JT0300DSH

AT0350SSL

DC0350SSL

DT0350SSH

DT0350SSL

JC0350SSL

JT0220SSL SC0220SSL ST0220SSH ST0220SSL

JT0270SSL SC0270SSL ST0270SSH ST0270SSL

JT0300DSL

SC0300DSL ST0300DSH ST0300DSL

JT0350SSH

JT0350SSL SC0350SSL

ST0350SSH

ST3050SSL

DC0220SEL DT0220SEL

JC0220SEL

DC0270SEL DT0270SEL

JC0270SEL

DC0300DEL DT0300DEL

JC0300DEL

DC0350SEL DT0350SEL

JC0350SEL

JT0220SEL SC0220SEL ST0220SEL

JT0270SEL SC0270SEL ST0270SEL

JT0300DEL

SC0300DEL ST0300DEL

JT0350SEL SC0350SEL ST0350SEL

Theory of Operation of Instant Electronic Ignition

IMPORTANT: The Non-CE Marked Instant Electronic Ignition system will attempt to light the gas by sparking for approximately 15 seconds. If gas ignition does not take place within approximately 15 seconds, the Instant Electronic Ignition control will go into safety lockout and the valve will no longer open until Instant Electronic Ignition control is reset. To reset Instant Electronic Ignition control, remove power from control by opening and closing the tumbler door. If condition persists, check that the gas shut-off valve is in “on” position and that the gas service is properly connected.

70172201

If condition persists:

1. Check resistance of high tension lead (approximately 1000 ohms/inch), and replace if not within resistance range.

2. Check voltage present at valve.

3. Check that machine is properly grounded.

4. Check the gap between igniter and burner tube (gap should be 1/4-3/8 inch).

5. Check that burner ports are not blocked or plugged under the igniter.

3

Safety Information

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

DANGER

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

WARNING

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

CAUTION

Precautionary statements (“DANGER,” “WARNING,” and “CAUTION”), followed by

specific instructions, are found in this manual and on machine decals. These precautions are intended for the personal safety of the operator, user, servicer, and those maintaining the machine.

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.

WARNING

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

W051

NOTE: The WARNINGS 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 tumbler. These factors MUST BE supplied by the person(s) installing, maintaining or operating the tumbler.

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

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

70172201

5

Cannot Perform Infrared (IR)

Communication

Single and stacked.

Gas and electric heat.

Attempt to

communicate with

the electronic

control from the

micro wand.

Is there a response of

any kind from the

electronic control?

YES

Single and three phase

supply.

NO

Aim micro wand

closer and try again.

Does the control

respond?

YES

NO

Check the following:

- low battery on micro wand

- is the IR window covered or blocked on the control.

- if needed replace the EDC

- is the IR cap properly attached

control

to the micro wand.

Does the electronic

control display "E:OF"

or "-C-"?

"E:OF"

Check the following:

- IR communication disabled by manual programming.

- Is the IR window on the control covered or blocked.

- if needed, change EDC board.

"-C-"

Communication

sequence checks

out.

T027D

70172201

7

Coins Ignored When Entered

Single and stacked units. Gas and electric heat. Single and three

phase voltage.

Start coin drop

diagnostic tests.

Does the display on the

EDC control increment

properly?

NO

Is connector H2 firmly

seated in its

receptacle?

YES

Is the 3 pin connector

between coin drop and

control connected

correctly?

YES

Are wires exiting coin

drop optical sensor cracked or broken?

YES

NO

YES

Exit diagnostic

testing and reset

control. (Prompting

for vend price)

Reconnect and run

diagnostic test

again.

Reconnect and run

diagnostic test

again.

Replace coin drop.

70172201

NO

Replace coin drop.

If problem still

exists then replace

the EDC control.

T026D

9

Door Open Light “On”

Control Display

Is there voltage at "H4-6 on the EDC

control?

NO

Is there power supplied

to the unit?

YES

Is there voltage to input

of primary fuses?

YES

Is there voltage to

output side of the

primary fuses?

YES

Single and stacked

units. Gas and electric

heat. Single and three

phase supply.

YES

NO

Reference voltage

checks to transformer

Replace EDC

Control.

Plug unit in and

run it.

Correct wiring between primary fuses and power

supply.

Replace primary

fuse(s).

neutral.

Is there voltage at

the input of the

secondary fuse?

YES

Is there voltage to

output side of

secondary fuse?

YES

Is there voltage to

N.O. of door

switch?

YES

With door closed is

there voltage to

COM of door

switch?

YES

NO

Correct wiring

between secondary

fuse and

transformer.

Replace secondary

fuse.

Correct wiring

between N.O. and

output of secondary

fuse.

Check for proper

function of door

switch replace if

necessary.

70172201

Is there voltage across

terminals "1" & "2" of transformer primary?

YES

Is there voltage across

terminals "2" & "3" of

transformer

secondary?

YES

NO

Correct wiring between primary

fuses and

transformer.

Replace

transformer.

Is there voltage to

N.O. of lint drawer

switch?

YES

Is there voltage to

COM of lint drawer

switch with lint

panel closed?

YES

Correct wiring

between "H4-6" of

EDC control and

COM of lint drawer

switch.

NO

Correct wiring between N.O. on lint drawer and COM on

door switch.

Check for proper

operation replace if

necessary.

T028D

11

Control Display

No Visible Display – OPL Microprocessor Models

Gas, steam

and electric heat.

Single and three

phase supply.

Is there voltage

supplied to the unit?

YES

Note: Reference voltage to

Is there voltage to the

input side of the primary fuse(s)?

YES

Is there voltage to the

output side of the

primary fuse(s)?

YES

Is there voltage

to primary side of

the transformer

terminal "1"?

NO

supply neutral.

NO

Connect supply

voltage and run unit.

Correct wiring between primary fuse and supply.

Replace primary

fuse.

Correct wiring

between transformer

and primary fuse.

Is there voltage across

fuse on OPL Micro?

YES

Replace fuse.

NO

Replace OPL Micro.

YES

Is there voltage across "1" & "4" of transformer

secondary?

YES

Is there voltage across

terminals "H3-3" &

"H3-4" on OPL Micro?

YES

NO

Replace transformer

Correct wiring

between OPL Micro

and transformer

secondary.

T007D

12

70172201

No Visible Display – Power On

Single and stacked units. Gas and electric heat. Single and three

phase supply.

Is there voltage across

"H4-2 & H4-5" on the

EDC control?

Replace EDC

Control.

Is there voltage at

the input of the

secondary fuse?

NOYES

Control Display

Correct wiring

between secondary

fuse and

transformer.

NO

Is there power supplied

to the unit?

YES

Is there voltage to input

of primary fuses?

YES

Is there voltage to output side of the

primary fuses?

YES

Is there voltage across

terminals "1" & "2" of transformer primary?

NO

Plug unit in and run

it.

Correct wiring between primary fuses and power

supply.

Replace primary

fuse(s).

Correct wiring between primary

fuse and

transformer.

YES

Is there voltage to

output side of

secondary fuse?

YES

Correct wiring

between "H4-2" and

secondary fuse.

NO

Replace secondary

fuse.

70172201

YES

Is there voltage across

terminals "2" & "3" of

transformer secondary?

YES

NO

Replace

transformer.

T025D

13

Electric

Manual Timer

Manual Timer, with and without Time Delay Board, Single and

Will Not Start

Stacked units, Single and 3 Phase power supply.

Is there power supply voltage coming to the

tumbler?

YES

Is there

voltage at the primary side

of the transformer at

terminals 1 and 2?

YES

Is

there voltage at the

secondary side of the

transformer at terminal

2 and 3?

YES

Is there voltage to the

output side of the

secondary fuse?

NOTE: White wires are

YES

transformer "neutral"

Is there voltage to the "N.O." terminal of the

door switch?

NO

YES

Connect power

and run the cycle.

Change the primary

fuse to the transformer.

Replace the transformer.

Change the

secondary fuse.

With door closed Is

there voltage at "COM"

of the door switch?

Still no voltage

For stacked units.

Correct the wiring

NO

secondary fuse and

the transformer.

Correct wiring

between power

supply and

transformer.

Correct wiring

between upper and

lower pocket.

between the

YES

Is there voltage to the

"COM" of the lint panel

switch?

YES

70172201

NO

Correct the wiring between the door

switch and the

secondary fuse.

With lint panel

closed is there votlage to

"N.O." terminal of the

liint panel switch?

NO

YES

Replace lint

panel switch.

NO

Check for proper

operation,

replace the door

switch if

necessary.

Refer to NO MOTOR RUN (run circuit.)

NO

Correct wiring

between lint panel

switch and door

switch.

T050D

15

Will Not Start

Electric

Rotary Coin Drop (Sheet 1 of 2)

Coin Drop with and without Time Delay Boards.

Single and Stacked units. Single and 3 phase

power supply.

Is there power supply

voltage coming to the

unit?

YES

Is there voltage at the

primary side of the

transformer at terminals

"1" & "2"?

YES

Is there voltage at the secondary side of the

transformer at terminal

"2" and "3"?

YES

Is there voltage to the

output side of the

secondary fuse?

YES

Note: Reference voltage

to transformer neutral.

(White wire)

Is there voltage to "N.C." terminal of

switch "A" on rotary

coin drop?

YES

Is the unit equipped

with time delay

boards?

NO

Note: The following

checks are made with

the vend price satisfied.

Is there voltage on the

"COM" terminal of switch

"A"?

NO

YES

NO

Connect power to

the unit and run

cycle.

Is the primary

fuse good?

YES

Correct wiring

between transformer

and power supply.

Replace the transformer.

Is the

secondary

fuse good?

YES

Correct wiring

between secondary

of transformer and

fuse.

Correct wiring between rotary

coin drop and

secondary fuse.

Continued on next

page at step 1.

Replace switch "A".

NO

Replace fuse and

run

machine.

Replace

fuse and

run

machine.

Is there voltage across coinmeter timer motor?

YES

Does the coinmeter

timer motor

advance?

YES

Is there voltage at

N.O. terminal of the

door switch?

YES

With the door

closed is there

voltage across the

door switch?

NO

Is there voltage to

the N.O. terminal of

the lint panel

switch?

YES

With the lint

panel closed is there

voltage across the

lint panel switch?

NO

Continued on next

page at step 2.

Step 3 continuation.

NO

YES

NO

YES

Correct wiring

between

coinmeter timer

motor and COM

on switch "A".

Replace coinmeter

timer motor.

Correct wiring between N.O on door switch and

COM on switch"A".

Check door switch for proper operation, replace if necessary.

Correct wiring between N.O. on the lint panel switch and

COM of door switch.

Check lint panel

switch for proper

operation and

replace if necessary.

16

YES

T075D

70172201

Electric

Rotary Coin Drop (Sheet 2 of 2)

Will Not Start

STEP 1

Is there voltage to

"H1-2" on TMR1

board?

YES

Note: Following tests

are conducted with

vend price satisfied.

With vend price

satisfied is there

voltage across "N.C." &

COM of switch "A"?

NO

Is there voltage across

the timer motor?

YES

Does Coinmeter Timer

Motor advance?

YES

NO

YES

NO

Correct wiring

between

"H1-2" and

output of

secondary

fuse.

Replace Switch "A"

Correct wiring between timer

motor and COM on

switch "A"

Replace Timer

Motor.

3 phase

STEP 2

Is there voltage at

"2A" of the start

switch?

YES

Does the unit have single phase or three phase power supply?

Single phase

Is there voltage at

terminal "7" of the

motor relay?

YES

NO

between "2A" of start

NO

Refer to NO

MOTOR RUN

(run circuit).

Correct wiring

switch and COM of

lint panel switch.

Correct wiring

between "7" of

motor relay and COM

of lint panel switch.

Is there voltage across

"H1-6" & "H1-8" of

TMR1?

YES

Is there voltage across

"H1-2" & "H1-3" of

TMR1"?

NO

Is there voltage to N.O.

of door switch?

YES

Continue at step 3 on previous page.

NO

YES

NO

Correct wiring

between "H1-6" and

COM on switch "A"

Replace TMR1.

Correct wiring between N.O. of door switch and "H1-3" of TMR1.

Is there voltage at

terminal "14" of the

motor control relay?

YES

Refer to NO

MOTOR RUN (Run

Circuit).

NO

Correct wiring to

terminal "14" of

motor control

relay.

T076D

70172201

17

Will Not Start

Gas

Manual Timer

No motor run (start circuit) Manual Tumblers. Single and stacked units

with and without time delay. GAS UNITS

Is there power supply voltage coming to the

tumbler?

YES

Is there voltage at the

primary side of the

transformer at

terminals 1 and 2?

YES

Is there voltage at the secondary side of the

transformer at terminal

2 and 3?

YES

Is there voltage to the

output side of the

secondary fuse?

NO

Connect power

and run the cycle.

Change the primary

fuse to the

transformer.

Replace the transformer.

Change the

secondary fuse.

Still no voltage

For stacked units.

Correct the wiring

NO

secondary fuse and

the transformer

Correct wiring

between power

supply and

transformer.

Correct wiring

between upper and

lower pocket.

between the

.

NOTE: White wires are

YES

Is there voltage to the input side of the door

switch?

NO

Correct the wiring between the door

switch and the

secondary fuse.

Is there voltage to the output side of the lint

panel switch?

NO

transformer "neutral"

YES

Is there voltage to the

output side of the door

switch?

Replace the door switch.

Replace lint

panel switch.

NO

YES

Refer to NO

MOTOR RUN

(run circuit).

Is there voltage to the

input side of the lint

panel switch?

NO

Correct wiring

between lint panel

switch and door

switch.

YES

T041D

18

70172201

Gas

Rotary Coin Drop (Sheet 1 of 2)

Single &

Stacked Tumblers

with and without time delay

Gas units.

Will Not Start

Is there power supply voltage coming to the

unit?

YES

Is there voltage at the primary side of the transformer at terminals

"1" & "2"?

YES

Is there voltage at the secondary side of the

transformer at terminal

"2" and "3"?

YES

Is there voltage to the

output side of the

secondary fuse?

YES

Note: Reference voltage to

transformer neutral.

Is there voltage to "N.C." terminal of

switch "A" on rotary

coin drop?

YES

NO

(White wire)

NO

Connect power to

the unit and run

cycle.

Is the primary

fuse good?

YES

Correct wiring

between transformer

and power supply.

Replace the transformer.

Is the

secondary

fuse good?

YES

Correct wiring

between secondary

of transformer and

fuse.

Correct wiring between rotary coin drop and secondary

fuse.

NO

Replace fuse and

run

machine.

Replace

fuse and

run

machine.

Is there voltage across

coinmeter timer motor?

YES

Does the coinmeter

timer motor

advance?

YES

Is there voltage at

N.O. terminal of the

door switch?

YES

With the door

closed is there

voltage across the

door switch?

NO

Is there voltage to

the N.O. terminal of

the lint panel

switch?

YES

NO

YES

NO

Correct wiring

between

coinmeter timer

motor and COM

on switch "A".

Replace coinmeter

timer motor.

Correct wiring

between N.O on

door switch and

COM on switch"A".

Check door switch for proper operation, replace if necessary.

Correct wiring between N.O. on the lint panel switch and

COM of door switch.

70172201

Is the unit equipped

with time delay

boards?

NO

Note: The following

checks are made with

the vend price satisfied.

Is there voltage on the

COM terminal of switch

"A"?

YES

With the lint

YES

NO

Continued on next

page at step 1.

Replace switch "A".

panel closed is there

voltage across the lint

panel switch?

NO

Continued on next

page at step 2.

Step 3 continuation.

YES

Check lint panel switch for proper

operation and replace if necessary.

T086D

19

Will Not Start

Gas

Rotary Coin Drop (Sheet 2 of 2)

STEP 1

Is there voltage to

"H1-2" on TMR1

board?

YES

Note: Following tests

are conducted with

vend price satisfied.

With vend price

satisfied is there

voltage across "N.C." &

COM of switch "A"?

NO

Is there voltage across

the timer motor?

YES

Does Coinmeter Timer

Motor advance?

YES

NO

YES

NO

Correct wiring

between

"H1-2" and

output of

secondary

fuse.

Replace Switch "A"

Correct wiring between timer motor and COM on switch

"A"

Replace Timer

Motor.

STEP 2

Is there voltage at

2A of the start

switch?

YES

Is there voltage at

terminal 7 of the

motor relay?

YES

NO

Refer to NO

MOTOR RUN

(run circuit).

Correct wiring between 2A of start switch and COM of

lint panel switch.

Correct wiring

between 7 of motor

relay and COM of

lint panel switch.

Is there voltage across

"H1-6" & "H1-8" of

TMR1?

YES

Is there voltage across

"H1-2" & "H1-3" of

TMR1?

NO

Is there voltage to N.O.

of door switch?

YES

Continue at step 3 on previous page.

NO

YES

NO

Correct wiring

between "H1-6" and

COM on switch "A"

Replace TMR1.

Correct wiring between N.O. of door switch and "H1-3" of TMR1.

T087D

20

70172201

Steam

Manual Timer

Single and stacked units with and without

time delay boards. Steam Heat.

Will Not Start

Is there power supply voltage coming to the

tumbler?

YES

Is there voltage at the

primary side of the

transformer at

terminals 1 and 2?

YES

Is there voltage at the secondary side of the

transformer at terminal

2 and 3?

YES

Is there voltage to the

output side of the

secondary fuse?

NOTE: White wires are

YES

transformer "neutral"

NO

Connect power

and run the cycle.

Change the primary

fuse to the

transformer

Replace the transformer.

Change the

secondary fuse.

Still no voltage

For stacked units.

Correct the wiring

NO

secondary fuse and

the transformer.

Correct wiring

between power

supply and

transformer.

Correct wiring

between upper and

lower pocket.

between the

70172201

Is there voltage to the

N.O. terminal of the

door switch?

NO

Correct the wiring

between the door

switch and the secondary fuse

Is there voltage to the

N.O. terminal of the

lint panel switch?

NO

YES

Is there voltage to the

COM terminal of the

door switch?

Replace the door switch.

Replace lint

panel switch.

NO

YES

Refer to NO MOTOR RUN (run circuit) .

Is there voltage to the

COM terminal of the

lint panel switch?

NO

Correct wiring

between lint panel

switch and door

switch.

YES

T016D

21

Will Not Start

Steam

Rotary Coin Drop (Sheet 1 of 2)

Single &

Stacked Tumblers

with and without time delay

Steam units.

Is there power supply

to the unit?

YES

Is there voltage

at the primary side of the

transformer at terminals

"1" & "2"?

YES

Is there voltage

at the secondary side of the

transformer at terminal

"2" and "3"?

YES

Is there voltage to the

output side of the

secondary fuse?

YES

Note: Reference voltage to

transformer neutral.

Is there voltage to

"N.C." terminal of

switch "A" on rotary

coin drop?

YES

NO

(White wire)

NO

Connect power to

the unit and run

cycle.

Is the primary

fuse good?

YES

Correct wiring

between transformer

and power supply.

Replace the transformer.

Is the

secondary

fuse good?

YES

Correct wiring

between secondary

of transformer and

fuse.

Correct wiring

between rotary coin

drop and secondary

fuse.

NO

Replace fuse and

run

machine.

Replace fuse and

run

machine.

Is there voltage across

coinmeter timer motor?

YES

Does the coinmeter

timer motor

advance?

YES

Is there voltage at

N.O. terminal of the

door switch?

YES

With the door

closed is there

voltage across the

door switch?

NO

Is there voltage to

the N.O. terminal of

the lint panel

switch?

YES

NO

YES

NO

Correct wiring

between coinmeter timer motor and COM

on switch "A".

Replace coinmeter

timer motor.

Correct wiring

between N.O on

door switch and

COM on switch"A".

Check door switch for proper operation, replace if necessary.

Correct wiring between N.O. on the lint panel switch and COM of door switch.

22

Is the unit equipped

with time delay

boards?

NO

Note: The following

checks are made with

the vend price satisfied.

Is there voltage on the

COM terminal of switch

"A"?

YES

With the lint

YES

NO

Continued on next

page column 1.

Replace switch "A".

panel closed is there

voltage across the

lint panel switch?

NO

Continued on next

page column 2.

Step 3 continuation.

YES

Check lint panel

switch for proper

operation and

replace if necessary.

T062D

70172201

Steam

Rotary Coin Drop (Sheet 2 of 2)

Will Not Start

COLUMN 1

Is there voltage to

"H1-2" on TMR1

board?

YES

Note: Following tests

vend price satisfied.

With vend price

satisfied is there

voltage across "N.C." &

COM of switch "A"?

NO

Is there voltage across

the timer motor?

YES

Does Coinmeter Timer

Motor advance?

YES

NO

are conducted with

YES

NO

Correct wiring

between

"H1-2" and

output of

secondary

fuse.

Replace Switch "A"

Correct wiring

between timer motor

and COM on switch

"A"

Replace Timer

Motor.

COLUMN 2

Is there voltage at

"2A" of the start

switch?

YES

Is there voltage at

terminal "7" of the

motor relay?

YES

NO

Refer to NO

MOTOR RUN

(run circuit).

Correct wiring

between "2A" of

start switch and COM

of lint panel switch.

Correct wiring

between "7" of

motor relay and COM

of lint panel switch.

Is there voltage across

"H1-6" & "H1-8" of

TMR1?

YES

Is there voltage across

"H1-2" & "H1-3" of

TMR1"?

NO

Is there voltage to N.O.

of door switch?

YES

Continue at step 3

on previous page.

NO

YES

NO

Correct wiring

between "H1-6" and

COM on switch "A"

Replace TMR1.

Correct wiring

between N.O. of

door switch and "H1-3" of TMR1.

T063D

70172201

23

Will Not Start/Continue Running

EDC Control (Sheet 1 of 3)

Note: test conducted with vend

price satisfied and start button

pressed.

Is there voltage at

"H4-4" on the EDC

control to transformer

neutral?

YES

Single and stacked units. Gas, electric and steam heat. Single and

three phase supply.

Continued on next

page.

Is there voltage at the

input of the secondary

fuse?

NO

Correct wiring

between secondary

fuse and

transformer.

NO

Is there power supplied

to the unit?

YES

Is there voltage to input

of primary fuse(s)?

YES

Is there voltage to output side of the

primary fuse(s)?

YES

Is there voltage across

terminals "1" & "2" of transformer primary?

YES

NO

Plug unit in and run

it.

Correct wiring

between primary

fuse(s) and power

supply.

Replace primary

fuse.

Correct wiring

between primary

fuse and

transformer.

YES

Is there voltage to

output side of

secondary fuse?

YES

Is there voltage to N.O.

of door switch?

YES

With door closed is

there voltage to COM

of door switch?

YES

Is there voltage to N.O.

of lint drawer switch?

YES

Is there voltage to

COM of lint drawer

switch with lint panel

closed?

YES

NO

Replace secondary

fuse.

Correct wiring

between N.O. and

output of secondary

fuse.

Check for proper

function of door

switch replace if

necessary.

Correct wiring

between N.O. on lint

drawer and COM on

door switch.

Check for proper

operation replace if

necessary.

70172201

Is there voltage across

terminals "2" & "3" of

transformer secondary?

YES

NO

Replace

transformer.

Is there voltage at

"H4-1" on the EDC

control board?

YES

Replace EDC

Control.

NO

Correct wiring

between "H4-1" and

COM of lint drawer

switch.

T029D

25

Will Not Start/Continue Running

EDC Control (Sheet 2 of 3)

Note: Tests conducted with vend

price satisfied and start button

pressed.

Is there voltage on "B"

terminal of motor

control relay?

NO

Correct wiring

between "B" and

"H4-4".

Is there voltage across

terminals "1" & "4" of

the fan motor?

YES

NO

Correct wiring

between fan motor

and motor control

relay.

3 phase. See

note on next

page

YES

Is the unit equipped with single phase or three phase power?

Single phase

Is there voltage to terminal "5" of the

motor control relay?

YES

Is there voltage to

terminal "8" of motor

control relay?

YES

Is there supply voltage

to L1 and L2 of the

motor control relay?

YES

NO

between L1, L2 and

Correct wiring

between terminal "5"

and power supply.

Replace motor

control relay.

Correct wiring

power supply.

Does the fan motor

run?

YES

Is unit equipped with single phase or three phase power supply?

Three phase. See note on next page.

Is there supply voltage

to L2 & L3 of motor

control relay?

YES

Is there voltage across

terminals L2 & T2 and

L3 & T3?

NO

Is there voltage at

terminal "6" of motor

control relay?

NO

Single phase

NO

YES

NO

Replace fan motor.

Correct wiring

between L2, L3 and

supply.

Replace motor

control relay.

Correct wiring

between terminal "6"

of motor control

relay and supply.

26

Is there votlage across

L1 & T1 and L2 & T2?

NO

YES

Replace motor

control relay.

YES

Is there voltage at

terminal "9" of motor

control relay?

YES

NO

Continued on next

page.

Replace motor

control relay.

T030D

70172201

EDC Control (Sheet 3 of 3)

Will Not Start/Continue Running

Is there voltage across

terminals "1" & "4" of

cylinder motor?

YES

Does the cylinder

motor run?

YES

Motors are

operational.

Note: For high voltage three phase supply (380 volts

or higher), the cylinder and fan motors are supplied

by L1, L2, L3 through the motor relay terminals T1,

T2, T3. Make the appropriate adjustments when

doing voltage checks.

NO

Correct wiring between cylinder motor and motor

control relay.

Replace cylinder

motor.

T031D

70172201

27

Will Not Start/Continue Running

OPL Microprocessor Control (Sheet 1 of 3)

Gas, steam and

electric heat.

Single and three phase

supply.

Reference voltage to

supply neutral.

Is power supplied to

unit?

NO

Connect supply

and run unit.

Is there voltage to

output of secondary

fuse?

NO

Replace secondary

fuse.

YES

Is there voltage to input

of primary fuse(s)?

YES

Is there voltage to output of primary

fuse(s)?

YES

Is there voltage across

terminals "1" & "2" on

primary of

transformer?

YES

Is there voltage across

terminals "2" & "3" of

transformer secondary?

NO

between transformer

NO

Correct wiring between primary fuse and supply.

Change primary

fuse.

Correct wiring

and primary fuse.

Replace

transformer.

YES

Is there voltage to

"N.O." terminal of door

switch?

YES

With door closed is

there voltage to "COM"

of door switch?

YES

Is there voltage to

"N.O." of lint panel

switch?

YES

Is there voltage to

"COM" of lint panel

switch with lint panel

closed?

NO

Correct wiring between "N.O." terminal of door

switch and

secondary fuse.

Check for proper

operation, replace

door switch if

necessary.

Correct wiring

between "N.O." of

lint panel switch

and "COM" of

door switch.

Check for proper

operation and

replace lint panel

switch if necessary.

28

YES

Note: Reference voltage to

transformer secondary neutral

Is there voltage to input

of secondary fuse?

YES

terminal "3".

NO

Correct wiring

between secondary

fuse and

transformer.

YES

Is there voltage at

terminal "8" of OPL

Micro?

YES

Continued on next

page.

NO

Correct wiring

between terminal

"8" of OPL Micro

and "COM" of lint

panel switch.

T099D

70172201

OPL Microprocessor Control (Sheet 2 of 3)

OPL Start - Run Circuitry continued.

Tests conducted with cycle selected and

start key pad activated.

Is there voltage at

terminal "7" on OPL

Micro?

NO

Replace OPL Micro.

Is there voltage

across terminals

"1" & "4" of fan

motor?

YES

Will Not Start/Continue Running

NO

Correct wiring

between fan motor

and motor control

relay.

YES

Is

there voltage

across terminals

"B" & "A" of motor control relay

for "OM" model and terminals

"0" & "1" for "RM"

models?

YES

Is unit supplied with

single phase or three

phase power?

Three phase. See note on next page.

Is there voltage to L1

and L2 of the motor

control relay?

YES

Is ther voltage to T1 and T2 of the motor

control relay?

YES

Reference voltage to

supply neutral.

NO

motor control relay.

Single phase

NO

between L1, L2 and

NO

Correct wiring to

Correct wiring

power supply.

Replace motor

control relay.

Single phase

Does the fan

motor run?

YES

Does the unit

have reversing

capabilities?

NO

Does the unit

have single phase or three phase supply?

Three phase. See note on next page.

Is

there voltage

to L2 and L3 on

the motor control

relay?

YES

Is

there voltage

to T2 and T3 on

the motor control

relay?

NO

YES

NO

Replace fan motor.

See cylinder

rotation. Either

forward or reverse.

Correct wiring

between L2, L3 and

power supply.

Replace motor

control relay.

70172201

Is there

voltage at terminal

"5" on the motor control

relay for "OM" models and

terminal "2" for "RM"

models?

YES

Is there

voltage across

terminals "5" & "8" of

the motor control relay for "OM"

models and terminals "2"

& "4" for "RM"

models?

NO

YES

Correct wiring

between motor

control relay and

power supply.

Replace motor

control relay.

Is there voltage to

terminal "6" of motor

control relay?

YES

Is there voltage

across terminals "6" & "9" of

motor control relay?

NO

between terminal

NO

"6" motor control

relay and supply

YES

Continued on next

page.

Correct wiring

voltage.

Replace motor

control relay.

T008D

29

Will Not Start/Continue Running

OPL Microprocessor Control (Sheet 3 of 3)

Is there voltage across

terminals "1" & "4" of

the cylinder motor?

YES

Does the cylinder

motor run?

YES

Unit operational.

NOTE: For three phase high voltage (380volts or

higher), the cylinder and fan motors are supplied L1, L2,

L3 through the motor relay terminals T1, T2, T3. Make

the appropriate voltage checks while doing trouble

shooting.

NO

Correct the wiring

between the

cylinder motor and

control relay.

Replace cylinder

motor.

T009D

30

70172201

Electric

Manual Timer (Sheet 1 of 3)

Will Not Run

With and without Time Delay Boards.

Single and Stacked units.

Single and 3 phase power supply.

Is there voltage at

terminal "C" on the

drying timer?

YES

NOTE: make sure drying

timer is in the "on"

Is there voltage at

terminal "B" on the

drying timer?

YES

Is there voltage across terminals "7" and "8" of

CR1 relay?

YES

Is there voltage across

terminal "3" and "5" of

CR1 relay?

NO

position.

NO

YES

Correct wiring

between drying

timer and lint panel

switch.

Replace drying

timer.

Correct the wiring between CR1 relay and terminal "B" on

drying timer.

Replace CR1 relay.

NO

Is the unit equipped

with a Time Delay

Board?

YES

Is there voltage across

"H1-6" & "H1-8" on

TMR1?

YES

**

Is there voltage across

terminals "H1-4" &

"H1-8" on TMR2?

YES

**

Is there voltage across

"DOB" contacts on

TMR2?

NO

YES

Correct wiring to

TMR1.

Check for proper

operation of Air

Flow Switch.

Replace Time

Delay Board.

70172201

NO

NOTE: This test to be

made with Push to Start

Switch pressed in.

Is there voltage

across terminals "2A"

& "1A" of push to

start switch?

NO

NOTE: The "N.O." contact is closed in the rest

**

Is there voltage across

"COM" and "N.O." of

the air flow switch?

NO

Tested with the start switch pressed in.

**

YES

position due to the physical

Replace Push to

Start Switch.

mounting of the switch.

Adjust the air flow

YES

switch or replace if

inoperative.

CONTINUED

ON NEXT

PAGE.

YES

NO

**

Is there voltage across

terminals "7" & "8" of

CR2 Relay?

YES

Is there voltage across

terminals "5" & "3" on

the CR2 Relay?

NO

**

Is there voltage across

coils "B" & "A" of the

Motor Control Relay?

NO

YES

NO

Correct wiring

between CR2 Relay and Air

Flow Switch.

Replace CR2

Relay.

Correct wiring

between Motor

Control Relay

and Air Flow

Switch.

T051D

31

Will Not Run

Electric

Manual Timer (Sheet 2 of 3)

Is this a single phase

or 3 phase unit?

Single phase

**

Is there voltage across

terminal "7" & "4" of the

Motor Control Relay?

NO

Is there voltage at

terminal "5" on the

motor control relay to

to supply neutral?

YES

Is there voltage across

terminal "5" & "8" of the

motor control relay?

NO

3 phase

YES

NO

YES

Replace Motor Control Relay.

Correct wiring

between terminal "5"

and supply voltage.

Replace motor

control relay.

Is there voltage across

terminals "14" & "13" of

motor control relay?

NO

Is there voltage to "L1" of motor control relay?

YES

Is there voltage to "L2" of motor control relay?

YES

Is there voltage across

"L1" to "T1" and "L2" to

"T2" on the motor

control relay?

NO

YES

NO

YES

Replace motor

control relay.

Correct wiring

between "L1" and

power supply.

Correct wiring

between "L2" and

power supply.

Replace motor

control relay.

Is there voltage across

terminals "1" & "4" of

Fan Motor?

YES

Does the Fan Motor

Run?

YES

**

Tested with the start switch pressed in.

NO

Correct wiring

between Fan

Motor and contact

"8" on the Motor

Control Relay.

Replace the Fan

Motor.

Is there voltage across

terminals "3" & "5" of

the fan motor centrifugal switch with the fan motor running?

NO

Continued on next

page.

Note: Only for non time

delay machines

YES

Replace Fan

Motor.

T052D

32

70172201

Electric

Manual Timer (Sheet 3 of 3)

Will Not Run

Is unit single phase or

3 phase?

Single phase.

Is there voltage to terminal "6" on the

motor control relay?

YES

Is there voltage across

terminal "6" & "9" of the

motor control relay?

NO

Is there voltage at

terminals "1" & "4" of

the Cylinder Motor?

YES

Three phase.

NO

YES

NO

Correct wiring

between terminal

"6" and power

supply.

Replace motor

control relay.

Correct wiring

between Cylinder

Motor and contact

"9" on the Motor

Control Relay.

Is there voltage to "L2"

on motor control relay?

YES

Is there voltage to "L3" on motor control relay?

YES

Is there voltage across

"L2 to T2" and "L3 to

T3" on the motor

control relay?

NO

YES

Correct wiring

between motor

control relay and

supply.

Correct wiring between motor

control relay and

supply.

Replace motor

control relay.

70172201

Does the Cylinder

Motor Run?

YES

The Cylinder and

Fan Motors are

operational.

NO

Replace the

Cylinder Motor.

T053D

33

Will Not Run

Electric

Rotary Coin Drop (Sheet 1 of 3)

Tumblers Single & Stack with and without

time delay. Single and Three phase power.

Tested with vend price

**

satisfied and with start

**

Is there voltage across

terminals "2A" & "1A"

of push to start

switch?

NO

Is there voltage to

COM of the Air Flow

Switch?

YES

**

Is there voltage across

COM and "N.O." of the air flow switch?

NO

switch pressed in.

YES

Note: Reference

voltage to transformer

neutral.

NO

NOTE: The N.O. contact is closed in the rest

position due to the physical mounting

of the switch.

YES

Replace Push to

Start Switch.

Correct wiring

between COM of Air

Flow Switch and

"1A" on Start Switch.

Replace inoperative switch or correct air flow vane operation.

**

Is there voltage across

terminals "7" & "8" of

CR2 Relay?

YES

**

Is there voltage across

terminals "5" & "3" on

the CR2 Relay?

NO

**

Is there voltage across

the coil of the Motor

Control Relay?

YES

Is unit Single

phase or Three

phase?

Single Phase

NO

YES

NO

Three phase

please see not.

Correct wiring

between CR2

Relay and Air

Flow Switch.

Replace CR2

Relay.

Correct wiring

between Motor

Control Relay

and Air Flow

Switch.

Continued on

Is the unit equipped

with a Time Delay

Board?

YES

**

Is there voltage across

terminals "H1-4" &

"H1-8" on TMR2?

YES

**

Is there voltage across

"DOB" contacts on

TMR2?

NO

YES

Check for proper

operation of Air

Flow Switch and

check wiring.

Replace Time

Delay Board.

Tested with the start switch pressed in.

**

Is there voltage across

terminal "7" & "4" of the

Motor Control Relay?

NO

Is there voltage at

terminal "5" on the

motor control relay?

YES

Continued on next page COLUMN 1.

YES

NO

Replace Motor Control Relay.

Correct wiring

between

terminal "5"

and supply

voltage.

T072D

34

70172201

Electric

Rotary Coin Drop (Sheet 2 of 3)

Will Not Run

COLUMN 1

Is there voltage across

terminal "5" & "8" of the

motor control relay?

NO

Is there voltage across

terminals "1" & "4" of

Fan Motor?

YES

Does the Fan Motor

Run?

YES

Is there voltage across

terminals "3" & "5" of

the fan motor

centrifugal switch with

the fan motor running?

YES

Replace motor

control relay.

Correct wiring

NO

YES

between Fan

Motor and contact

"8" on the Motor

Control Relay.

Replace the Fan

For units without Time

Delay Boards.

Replace Fan

Motor.

COLUMN 2

Is there voltage across

terminal "14" & "13" of

motor control relay?

NO

Is there voltage to "L1" &

"L2" terminals on motor

control relay?

YES

Is there voltage to "T1" &

"T2" terminals on motor

control relay?

NOTE: For Hi voltage three phase supply

(380volts or higher), the cylinder and fan motor

are supplied "L1", "L2", "L3" through the motor relay

terminals "T1", "T2", "T3". Make the appropriate

adjustments when doing trouble shooting.

YES

NO

NOYES

between "L1", "L2"

Replace motor

control relay.

Correct wiring

and supply.

Replace motor

control relay.

NO

Is the machine

supplied with single

phase or three phase

power?

Single Phase

Is there voltage to

terminal "6" on the

motor control relay?

YES

Continued on next

page COLUMN 1.

Three Phase

Please see note.

Correct wiring

NO

between terminal

"6" and power

supply.

Is there voltage to

"L2" & "L3" terminals

on motor control

relay?

YES

Is there voltage

across "L2" to "T2" and

"L3" to "T3"?

NO

Does the cylinder

motor run?

YES

CYLINDER AND

FAN MOTORS ARE

OPERATIONAL.

NO

YES

NO

Correct wiring between supply and "L2" & "L3"

terminals.

Replace motor

control relay.

Replace cylinder

motor.

T073D

70172201

35

Will Not Run

Electric

Rotary Coin Drop (Sheet 3 of 3)

COLUMN 1

Is there voltage across

terminals "6" & "9" of

motor control relay?

NO

Is there voltage at

terminals "1" & "4" of

the Cylinder Motor?

YES

Does the Cylinder

Motor Run?

YES

The Cylinder and

Fan Motors are

operational.

YES

NO

Replace motor

control relay.

Correct wiring between Cylinder Motor and contact

"9" on the Motor

Control Relay.

Replace the

Cylinder Motor.

T074D

36

70172201

Gas

Manual Timer (Sheet 1 of 2)

Will Not Run

No motor run (run circuit) Manual T

and stacked units with and without Time Delay

Boards. GAS UNIT.

Is there voltage at

terminal “c” on the

drying timer?

YES

Is there voltage at

terminal “b” on the

drying timer?

YES

Is there voltage across terminals “7” and “8” of

CR1 relay?

YES

Is there voltage across

terminal “3” and “5” of

CR1 relay?

umblers Single

NO

NOTE: make sure drying

timer is in the “on”

position.

NO

YES

Correct wiring

between drying

timer and lint panel

switch.

Replace drying

timer.

Correct the wiring between CR1 relay and terminal “b” on

drying timer.

Replace CR1 relay.

NO

Is the unit equipped

with a Time Delay

Board?

YES

Is there voltage across

“H1-6” & “H1-8” on

TMR1?

YES

**

Is there voltage across

terminals “H1-4” &

“H1-8” on TMR2?

YES

**

Is there voltage across

"DOB" contacts on

TMR2?

NO

YES

Correct wiring to

TMR1.

Check for proper

operation of

Airflow Switch.

Replace Time

Delay Board.

NO

NOTE: This test to be

made with Push to Start

Switch pressed in.

Is there voltage

across terminals “2A”

& “1A” of push to

Start switch?

NO

**

Is there voltage across

“COM” and “N.O.” of

the Airflow switch?

NO

Tested with the start switch pressed in.

**

YES

NOTE: The N.O. contact is closed in the rest

position due to the physical mounting

of the switch.

YES

Replace Push to

Start Switch.

Adjust the Airflow

switch or replace if

inoperative.

CONTINUED

ON NEXT

PAGE.

YES

NO

**

Is there voltage across

terminals “7” & “8” of

CR2 Relay?

YES

Is there voltage across

terminals “5” & “3” on

the CR2 Relay?

NO

**

Is there voltage across

coils “B” & “A” of the

Motor Control Relay?

NO

YES

NO

Correct wiring

between CR2

Relay and

Airflow Switch.

Replace CR2

Relay.

Correct wiring

between Motor

Control Relay

and Airflow

Switch.

T042D

70172201

37

Will Not Run

Gas

Manual Timer (Sheet 2 of 2)

**

Is there voltage across

terminal "7" & "4" of the

Motor Control Relay?

YES

Does the Fan Motor

Run?

NO

Replace the Fan

Motor.

NO

Is there voltage at

terminal "5" on the

motor control relay to

to supply neutral?

YES

Is there voltage across

terminal "5" & "8" of the

motor control relay?

NO

Is there voltage across

terminals "1" & "4" of

Fan Motor?

NO

YES

NO

Replace Motor

Control Relay.

Correct wiring

between terminal "5"

and supply voltage.

Replace motor

control relay.

Correct wiring

between Fan

Motor and contact

"8" on the Motor

Control Relay.

YES

Is there voltage across

terminals "3" & "5" of

the fan motor centrifugal switch with the fan motor running?

NO

Is there voltage to

terminal "6" on the

motor control relay and

supply neutral?

YES

Is there voltage across terminal "6" & "9" of the

motor control relay?

NO

Is there voltage at

terminals "1" & "4" of

the Cylinder Motor?

YES

Note: Only for non time

delay machines

YES

Replace Fan

Motor.

Correct wiring

NO

between terminal

"6" and power

supply.

YES

NO

Replace motor

control relay.

Correct wiring

between Cylinder

Motor and contact

"9" on the Motor

Control Relay.

38

YES

Tested with the start switch pressed in.

**

Does the Cylinder

Motor Run?

YES

The Cylinder and

Fan Motors are

operational.

NO

Replace the

Cylinder Motor.

T043D

70172201

Gas

Rotary Coin Drop (Sheet 1 of 2)

Will Not Run

& Stack with and without time delay.

Single

Gas units.

**

Is there voltage across

terminals "2A" & "1A"

of push to start

switch?

NO

voltage to transformer

Is there voltage to

COM of the Air Flow

Switch?

YES

NOTE: The N.O. contact is closed in the rest position due to the physical

**

Is there voltage across

"COM" and "N.O." of

the air flow switch?

NO

Tested with start switch

Note: Reference

neutral.

mounting of the switch.

pressed in.

YES

NO

YES

Replace Push to

Start Switch.

Correct wiring

between COM of Air

Flow Switch and

"1A" on Start Switch.

Adjust the air flow

switch or replace if

inoperative.

**

Is there voltage across

"DOB" contacts (H1-4

and H1-5) on TMR2?

NO

**

Is there voltage across

terminals "7" & "8" of

CR2 Relay?

YES

**

Is there voltage across

terminals "5" & "3" on

the CR2 Relay?

NO

**

Is there voltage across

coils "B" & "A" of the

Motor Control Relay?

YES

NO

YES

NO

Replace Time

Delay Board.

Correct wiring between CR2

Relay and Air

Flow Switch.

Replace CR2

Relay.

Correct wiring

between Motor

Control Relay

and Air Flow

Switch.

Is the unit equipped

with a Time Delay

Board?

YES

Is there voltage across

"H1-6" & "H1-8" on

TMR1?

YES

**

Is there voltage across

terminals "H1-4" &

"H1-8" on TMR2?

YES

NO

Correct wiring to

TMR1.

Check for proper

operation of Air

Flow Switch and

check wiring.

**

Tested with the start switch pressed in.

YES

**

Is there voltage across

terminal "7" & "4" of the

Motor Control Relay?

NO

Is there voltage at

terminal "5" on the

motor control relay?

YES

CONTINUED

ON NEXT

PAGE.

YES

NO

Replace Motor

Control Relay.

Correct wiring

between

terminal "5"

and supply

voltage.

T088D

70172201

39

Will Not Run

Gas

Rotary Coin Drop (Sheet 2 of 2)

No Motor Run (run circuit)

Is there voltage across

terminal "5" & "8" of the

motor control relay?

NO

Is there voltage across

terminals "1" & "4" of

Fan Motor?

YES

Does the Fan Motor

Run?

YES

Is there voltage

across terminals "3" &

"5" of the fan motor centrifugal

switch with the fan

motor running?

YES

NO

YES

Replace motor

control relay.

Correct wiring

between Fan

Motor and contact

"8" on the Motor

Control Relay.

Replace the Fan

Motor.

Replace Fan

Motor.

Is there voltage at

terminals "1" & "4" of

the Cylinder Motor?

YES

Does the Cylinder

Motor Run?

YES

The Cylinder and

Fan Motors are

operational.

NO

Correct wiring

between Cylinder

Motor and contact

"9" on the Motor

Control Relay.

Replace the

Cylinder Motor.

NO

Is there voltage to

terminal "6" on the

motor control relay?

YES

Is there voltage across

terminal "6" & "9" of the

motor control relay?

NO

YES

Correct wiring

between terminal

"6" and power

supply.

Replace motor

control relay.

**

Tested with the start switch pressed in.

T089D

40

70172201

Steam

Manual Timer (Sheet 1 of 2)

No motor run (run circuit) Manual Tumblers.

Single and stacked units with and without

time delay board. Steam heat.

Will Not Run

Is there voltage at

terminal “C” on the

drying timer?

YES

Is there voltage at

terminal “B” on the

drying timer?

YES

Is there voltage across

terminals “7” and “8” of

CR1 relay?

YES

Is there voltage across terminal “3” and “5” of

CR1 relay?

NO

Is there voltage

across terminals “2A”

& “1A” of push to

Start switch?

NO

timer and lint panel

NOTE: Make sure drying

timer is in the "on"

position.

NO

Correct the wiring

NO

between CR1 relay and terminal “B” on

YES

Replace CR1 relay.

NOTE: This test to be

made with Push to Start

Switch pressed in.

YES

Replace Push to

Correct wiring

between drying

switch.

Replace drying

timer.

drying timer.

Start Switch.

NO

Is the unit equipped

with a Time Delay

Board?

YES

Is there voltage across

“H1-6” & “H1-8” on

TMR1?

YES

**

Is there voltage across

terminals “H1-4” &

“H1-8” on TMR2?

YES

**

Is there voltage across

“DOB” contacts on

TMR2?

NO

**

Is there voltage across

terminals “7” & “8” of

CR2 Relay?

NO

YES

NO

Correct wiring to

TMR1.

Check for proper

operation of

Airflow Switch.

Replace Time

Delay Board.

Correct wiring

between CR2

Relay and

Airflow Switch.

70172201

NO

NOTE: The N.O. contact is closed in

the rest position due to the physical

**

Is there voltage across

“COM” and “N.O.” of

the Airflow switch?

NO

Tested with the start switch pressed in.

**

mounting of the switch.

YES

Adjust the Airflow

switch or replace if

inoperative.

CONTINUED

ON NEXT

PAGE.

YES

Is there voltage across

terminals “5” & “3” on

the CR2 Relay?

NO

**

Is there voltage across

“B” & “A” of the Motor

Control Relay ?

YES

NO

Replace CR2

Relay.

Correct wiring

between Motor

Control Relay

and Airflow

Switch.

T017D

41

Will Not Run

Steam

Manual Timer (Sheet 2 of 2)

** Is there voltage across terminal "7" & "4" of the

Motor Control Relay?

YES

Does the Fan Motor

Run?

NO

Replace the Fan

Motor.

NO

Is there voltage at

terminal "5" on the

motor control relay to

to supply neutral?

YES

Is there voltage across terminal "5" & "8" of the

motor control relay?

NO

Is there voltage across

terminals "1" & "4" of

Fan Motor?

NO

YES

NO

Replace Motor

Control Relay.

Correct wiring

between terminal

"5" and supply

voltage.

Replace motor

control relay.

Correct wiring

between Fan

Motor and contact

"8" on the Motor

Control Relay.

YES

Is there voltage across

terminals "3" & "5" of

the fan motor centrifugal switch with the fan motor running?

NO

Is there voltage to

terminal "6" on the

motor control relay and

supply neutral?

YES

Is there voltage across

terminal "6" & "9" of the

motor control relay?

NO

Is there voltage at

terminals "1" & "4" of

the Cylinder Motor?

YES

Note: only for non time

delay machines

YES

Replace Fan

Motor.

Correct wiring

NO

between terminal

"6" and power

supply.

YES

Replace motor

control relay.

Correct wiring

NO

between Cylinder

Motor and contact

"9" on the Motor

Control Relay.

42

YES

Tested with the start switch pressed in.

**

Does the Cylinder

Motor Run?

YES

The Cylinder and

Fan Motors are

operational.

NO

Replace the

Cylinder Motor.

T018D

70172201

Steam

Rotary Coin Drop (Sheet 1 of 2)

Single & Stack

with and without time delay.

Steam units.

Is there voltage across

terminals "2A" & "1A"

of push to start

Is there voltage to

COM of the Air Flow

**

switch?

Switch?

**

Tested with start switch

pressed in and vend

NO

Note: Reference

voltage to transformer

satisfied.

neutral.

YES

NO

between COM of Air

"1A" on Start Switch.

Replace Push to

Start Switch.

Correct wiring

Flow Switch and

**

Is there voltage across

"DOB" contacts on

TMR2?

NO

**

Is there voltage across

terminals "7" & "8" of

CR2 Relay?

YES

NO

Replace Time

Delay Board.

Correct wiring

between CR2

Relay and Air

Flow Switch.

Will Not Run

YES

NOTE: The N.O. contact is closed in the rest

**

Is there voltage across

"COM" and "N.O." of

the air flow switch?

NO

Is the unit equipped

with a Time Delay

Board?

YES

Is there voltage across

"H1-6" & "H1-8" on

TMR1?

YES

**

Is there voltage across

terminals "H1-4" &

"H1-8" on TMR2?

YES

position due to the physical mounting

of the switch.

Adjust the air flow

YES

switch or replace if

inoperative.

NO

Correct wiring to

TMR1.

Check for proper

NO

operation of Air

Flow Switch and

check wiring.

**

Is there voltage across

terminals "5" & "3" on

the CR2 Relay?

NO

**

Is there voltage across

"B" & "A" of the Motor

Control Relay?

YES

**

Is there voltage across

terminal "7" & "4" of the

Motor Control Relay?

NO

Is there voltage at

terminal "5" on the

motor control relay?

YES

CONTINUED

ON NEXT

PAGE.

YES

NO

YES

NO

Replace CR2

Relay.

Correct wiring

between Motor

Control Relay

and Air Flow

Switch.

Replace Motor

Control Relay.

Correct wiring

between

terminal "5"

and supply

voltage.

70172201

**

Tested with the start switch pressed in.

T064D

43

Will Not Run

Steam

Rotary Coin Drop (Sheet 2 of 2)

No Motor Run (run circuit)

Is there voltage across

terminal "5" & "8" of the

motor control relay?

NO

Is there voltage across

terminals "1" & "4" of

Fan Motor?

YES

Does the Fan Motor

Run?

YES

Is there voltage across

terminals "3" & "5" of

the fan motor

centrifugal switch with

the fan motor running?

YES

Replace motor

control relay.

Correct wiring

NO

Only for units without

time delay boards.

YES

between Fan

Motor and contact

"8" on the Motor

Control Relay.

Replace the Fan

Motor.

Replace Fan

Motor.

Is there voltage at

terminals "1" & "4" of

the Cylinder Motor?

YES

Does the Cylinder

Motor Run?

YES

The Cylinder and

Fan Motors are

operational.

NO

Correct wiring

between Cylinder

Motor and contact

"9" on the Motor

Control Relay.

Replace the

Cylinder Motor.

NO

Is there voltage to

terminal "6" on the

motor control relay?

YES

Is there voltage across

terminal "6" & "9" of the

motor control relay?

NO

YES

Correct wiring

between terminal

"6" and power

supply.

Replace motor

control relay.

**

Tested with the start switch pressed in.

T065D

44

70172201

Electric

Manual Timer (Sheet 1 of 2)

NOTE: The following tests are conducted with

the Heat Timer in the "ON" position with the

machine running and calling for heat. Voltage

checks are referenced to transformer neutral.

Will Not Heat

With and without Time Delay

Board, Single and Stacked units, Single and

3 Phase power supply.

YES

Is there voltage across

terminals "1" & "6" of

the Temp Control Bd?

YES

Is there voltage across

terminals "5" & "6" of

the Temp Control Bd?

NO

Is the thermistor

shorted or open?

NO

Is temperature

selection switch

shorted or open?

NO

Replace the

Temperature

Control Board.

NO

YES

Is there

voltage to

terminal "3" of

fan motor?

Replace thermistor.

Replace selection

switch.

NO

YES

Correct wiring

between fan motor

terminal "3" and

CR1 terminal "4".

YES

Is there voltage at Air

Flow Switch (AFS)

"N.C." terminal to

transformer neutral?

YES

Is there voltage at

terminal "6" on CR1 to

transformer neutral?

YES

Is there voltage from

terminal "4" on CR1 to

transformer neutral?

YES

Is unit equipped with

time delay board?

NO

Is there voltage from

terminal "6" on CR2 to

transformer neutral?

YES

Replace inoperative

NO

switch or correct air

flow vane operation.

Correct wiring

NO

between A.F.S. and

terminal "6" on CR1.

NO

Replace CR1.

Correct wiring

NO

between terminal "6"

on CR2 to terminal

"4" on CR1.

70172201

CONTINUED

ON NEXT

PAGE

Is there voltage from

terminal "4" on CR2 to

Is there voltage

at terminal 3 & 5

of fan motor?

YES

Correct wiring between motor

terminal "5" and

Temp Control

Board terminal "1".

NO

Replace fan motor.

transformer neutral?

YES

Correct wiring between CR2 terminal "4" &

terminal "1" on

Temp Control

Board.

NO

Replace CR2.

T054D

45

Will Not Heat

Electric

Manual Timer (Sheet 2 of 2)

NO HEAT CONTINUED

Note: Voltage checks are referenced to

transformer neutral.

Is there voltage to the

input side of the

Cabinet Limit?

YES

Is there voltage to the

output side of the

Cabinet Limit?

YES

Is there voltage to the

input side of the Stove

Limit?

YES

Is there voltage to the

output side of the Stove

Limit?

NO

Correct wiring

between Cabinet

Limit and Temp

Control Board.

Replace the Cabinet

Limit.

Correct wiring

between Stove limit

and Cabinet Limit.

Replace the Stove

Limit.

Do the elements

produce heat?

YES

UNIT

OPERATIONAL

NO

Replace elements.

YES

Is there voltage across

"HC1" & "HC2"

element contactor

coils?

YES

Is there votlage across

the elements?

YES

NO

Correct wiring

between element

contactor coils and

stove limit.

Check wiring

between elements,

contactors and

supply. Correct if

necessary.

T055D

46

70172201

Electric

Rotary Coin Drop (Sheet 1 of 2)

Will Not Heat

Note: Tests are conducted with unit running

and calling for heat.

All voltage checks are referenced to

transformer neutral.

Replace

thermistor.

NO

thermistor

operational?

NO

Is there voltage on

"FS-2" of EDC control?

YES

Is there voltage

on "FS-1" of

EDC control?

YES

Is there voltage on

COM of air flow

switch?

YES

Correct wiring

between "FS-2" and

COM of lint drawer.

NONO

Is the

Correct wiring

between COM of air

flow switch and

"FS-1" of EDC

Single and stacked units with single and three

Replace EDC

control.

YES

control.

phase supply.

Is there voltage to the

Is there voltage on

terminal "3" of fan

motor centrifugal

switch?

YES

Is there voltage at terminal "5" of fan

motor centrifugal

switch?

YES

input side of the

cabinet limit?

YES

NO

Correct wiring

between terminal

"3" of fan motor

centrifugal switch and terminal "4" of motor control relay.

Replace fan motor.

Correct wiring

between cabinet

limit and terminal

"5" of fan motor

centrifugal switch.

Is there voltage at

"N.C." terminal of air

flow switch?

YES

Is there voltage on

terminal "7" of motor

control relay?

YES

Is there voltage at

terminal"4" of motor

control relay?

YES

NO

Check for proper

function of air flow

switch and replace

if necessary.

Correct wiring

between terminal 7

on motor control

relay and N.C.

terminal on air flow

switch.

Replace motor

control relay.

Is there voltage at the

output of the cabinet

limit?

YES

Is there voltage to the

input side of the stove

limit?

YES

Continued on next

page.

NO

Replace cabinet

limit.

Correct wiring

between stove limit

and cabinet limit.

T034D

70172201

47

Will Not Heat

Electric

Rotary Coin Drop (Sheet 2 of 2)

EDC No Heat

continued.

Is there voltage to the

output side of the stove

limit?

YES

Is there voltage across

coils "HC1" & "HC2"?

YES

Is there voltage across

the heating elements?

YES

Do the elements

produce heat?

YES

NO

Replace the stove

limit.

Correct wiring to

the coils of "HC1"

and "HC2".

Correct wiring

between elements

and supply. Replace

"HC1" and or "HC2"

if necessary

Replace elements.

48

Unit operational.

T035D

70172201

Electric

Rotary Coin Drop (with and without time delay board) (Sheet 1 of 2)

Single & Stacked Tumblers with and without time delay.

Single and Three phase

uiits.

Will Not Heat

YES

Is there voltage across across terminals "1" &

"6" of the Temp Control Board?

YES

Is there voltage across

terminals "5" & "6" of

the Temp Control Bd?

NO

Is the thermistor

shorted or open?

NO

Is temperature

selection switch

shorted or open?

NO

Replace the

Temperature

Control Board.

Is there voltage

on terminal "3" of fan

motor to transformer

neutral?

YES

NO

YES

Replace thermistor.

YES

NO

Replace selection

switch.

Correct wiring

between terminal

"3" of fan motor

and N.C. terminal

on Switch "B".

YES

Is there voltage at Air

Flow Switch "N.C."

terminal to transformer

neutral?

YES

Is there voltage at

COM on Switch "B" to

transformer neutral?

YES

Is there voltage from

"N.C." on Switch "B" to

transformer neutral?

YES

Is the unit equipped

with a Time Delay

Board?

NO

Is there voltage from

terminal "6" on CR2 to

transformer neutral?

YES

Adjust the Air Flow

NO

Switch or replace if

Correct wiring

NO

between air flow

switch and COM on

NO

Replace Switch "B".

Correct wiring

NO

between terminal "6"

on CR2 to terminal

"N.C." on Switch "B".

inoperative.

Switch "B".

70172201

CONTINUED

ON NEXT

PAGE

With fan motor

running is there voltage

from terminal "5" to

transformer neutral?

YES

Is there voltage on terminal "1" of Temp Board to transformer

neutral?

YES

Power supply to

Temp Control Board

is good.

NO

Replace Fan Motor.

Correct wiring

between terminal

NO

"1" of Temp Board

to terminal "5"

of fan motor.

Is there voltage from

terminal "4" on CR2 to

transformer neutral?

YES

Correct wiring

between terminal

"4" on CR2 &

terminal "1" on

Temp Control

Board.

NO

Replace CR2.

T077D

49

Will Not Heat

Electric

Rotary Coin Drop (with and without time delay board) (Sheet 2 of 2)

NO HEAT CONTINUED

Note: Voltage checks are referenced to

transformer neutral.

Is there voltage to the

input side of the

Cabinet Limit?

YES

Is there voltage to the

output side of the

Cabinet Limit?

YES

Is there voltage to the

input side of the Stove

Limit?

YES

Is there voltage to the

output side of the Stove

Limit?

NO

Correct wiring

between Cabinet

Limit and Temp

Control Board.

Replace the

Cabinet Limit.

Correct wiring

between Stove limit

and Cabinet Limit.

Replace the Stove

Limit.

Do the elements

produce heat?

YES

UNIT

OPERATIONAL

NO

Replace elements.

50

YES

Is there voltage across

the coils of "HC1" &

"HC2"?

YES

Is there voltage across

the elements?

YES

NO

Correct the wiring

to the coils.

Check the wiring

between elements,

contactors and

supply. Correct if

necessary.

T078D

70172201

Electric/Gas

OPL Microprocessor (Sheet 1 of 3)

Single and three phase supply.

Reference voltage to

transformer neutral

Is there votlage at

terminal "5" on OPL

Micro?

terminal "3".

Note: Testing conducted with unit running

YES

Continued on next

page column 2.

and calling for heat.

Is there voltage across

terminals "2" & "3" of

transformer

secondary?

NO

Replace

transformer.

Will Not Heat

NO

Is the thermister

operating properly?

YES

Reference voltage to

supply neutral.

Is power supplied to

unit?

YES

Is there voltage to input

of primary fuse(s)?

YES

Is there voltage to

output of primary

fuse(s)?

Test conducted with unit

running and calling for heat.

NO

Replace thermister.

NO

Connect supply and

run unit.

NO

Correct wiring

between primary

fuse and supply.

Change primary

fuse.

YES

Note: Reference voltage to

transformer secondary neutral

Is there voltage to input

of secondary fuse?

YES

Is there voltage to

output of secondary

fuse?

YES

Is there voltage to

"N.O." terminal of door

switch?

YES

With door closed is

there voltage to "COM"

of door switch?

terminal "3".

NO

Correct wiring

between secondary

fuse and

transformer.

Replace secondary

fuse.

Correct wiring

between "N.O."

terminal of door

switch and

secondary fuse.

Check for proper

operation, replace

door switch if

necessary.

70172201

YES

Is there voltage across

terminals "1" & "2" on

primary of

transformer?

YES

NO

between transformer

Correct wiring

and primary fuse.

YES

Is there voltage to

"N.O." of lint panel

switch?

YES

Continued on next

page column 1.

NO

Correct wiring

between "N.O." of

lint panel switch

and "COM" of door

switch.

T010D

51

Will Not Heat

Electric/Gas

OPL Microprocessor (Sheet 2 of 3)

NO HEAT

Column 1

Column 2

The following tests are

conducted with the unit running

and calling for heat.

Is there voltage to

"COM" of lint panel

switch with lint panel

closed?

YES

Is there voltage at

terminal "8" of OPL

Micro?

YES

Is there voltage to

terminal "13" of OPL

Micro?

YES

Is there voltage at

terminal "6" of OPL

Micro?

YES

Replace OPL Micro.

Is there voltage to

terminal 14 on motor

control relay?

YES

NO

Check for proper

operation and

replace lint panel

switch if necessary.

Correct wiring between terminal "8" of OPL Micro

and "COM" of lint

panel switch.

Replace OPL Micro.

Correct wiring between terminal

"6" & "13" on OPL

Micro.

Correct wiring between terminal

"14" on motor

control relay and

N.C. terminal of air

flow switch.

Three phase

Is there voltage at

"COM" of air flow

switch?

YES

Is there voltage at

"N.C." terminal of air

flow switch?

YES

Is the unit supplied with

single phase or three

phase power?

single phase

Is there voltage at

terminal "7" of motor

control relay for "OM"

models or terminal "8"

for "RM" models?

YES

Is there voltage at

terminal "4" of motor

control relay for "OM"

models or terminal "6"

for "RM" models?

YES

Is there voltage at terminal "3" of fan

motor centrifugal

switch?

NO

Correct wiring

between "COM" &

OPL Micro.

Check for proper

operation and

replace if

necessary.

Correct wiring

between terminal

"7/8" of motor control relay and "N.C." of air flow

switch.

Replace motor

control relay.

Correct wiring

between fan motor

centrifugal switch and motor control

relay.

52

Is there votlage across

terminals 14 & 13 of motor control relay?

YES

Replace motor

control relay.

NO

YES

Is there voltage at terminal "5" of fan

motor centrifugal

switch?

YES

Continued on next

page.

NO

Replace fan motor.

T011D

70172201

Electric/Gas

OPL Microprocessor (Sheet 3 of 3)

Continued from column 2 of

previous page.

Will Not Heat

Is there voltage to the

input of the cabinet

limit?

YES

Is there voltage to

output of cabinet limit?

YES

Is there voltage to input

of stove limit?

YES

Is there voltage to the

output side of the stove

limit?

YES

NO

Correct wiring

between cabinet

limit and terminal

"5" of fan motor

centrifugal switch.

Replace cabinet

limit.

Correct wiring

between stove limit

and cabinet limit.

Replace stove limit.

Is there voltage to

terminal "1" of ICM

board?

YES

Is there voltage across

the coils of the gas

valve?

YES

Is there gas flow

through the valve?

YES

NO

Does the ignitor spark?

NO

YES

Replace ICM board.

Correct wiring to

gas valve coils.

Replace the coils or complete gas valve.

Unit is operational.Is there a flame?

Check gas

pressures and

adjust if necessary.

Is the unit equipped

with gas heat or

electric heat?

GAS

Is there voltage to

terminal "2" of ICM

board?

YES

ELECTRIC

NO

Correct wiring

between ICM board

and stove limit.

UNIT

OPERATIONAL.

NO

Replace igniter or

ignition cable.

Is there voltage across

HC1 & HC2 coils?

YES

Do the elements

produce heat?

YES

NO

Correct the wiring

to the HC1 and/or

HC2 coils.

Correct wiring

between supply,

contacts and

elements. Replace

contactors and/or

elements if

necessary.

T012D

70172201

53

Will Not Heat

Gas

EDC Models (Sheet 1 of 2)

Note: Tests are conducted with unit

running and calling for heat.

All voltage checks are referenced

to transformer neutral.

Is there voltage on

"FS-2" of EDC control?

YES

Replace

thermistor.

Is there voltage

on "FS-1" of

EDC control?

YES

Is there voltage on

COM of air flow

NO

switch?

YES

Single and stacked gas

between "FS-2" and

COM of lint drawer.

NO

Is the

thermistor

between COM of air

Correct wiring

flow switch and

"FS-1" of EDC

NO

operational?

NO

units.

Replace EDC

control.

YES

control.

Is there voltage on

terminal "3" of fan

motor centrifugal

switch?

YES

Is there voltage across

terminals "3" & "5" of fan motor centrifugal

switch?

NO

Is there voltage to the

input side of the

cabinet limit?

YES

NO

YES

NO

Correct wiring

between terminal

"3" of fan motor

centrifugal switch

and terminal "4" of

motor control relay.

Replace fan motor.

Correct wiring

between cabinet

limit and terminal

"5" of fan motor

centrifugal switch.

Is there voltage across

COM & "N.C." terminal

of air flow switch?

NO

Is there voltage on

terminal "7" of motor

control relay?

YES

Is there voltage across

terminals "7" & "4" of

motor control relay?

NO

YES

NO

YES

Check for proper function of air flow switch and replace

if necessary.

Correct wiring

between terminal

"7" on motor

control relay and

N.C. terminal on

air flow switch.

Replace motor

control relay.

Is there voltage across

cabinet limit?

NO

Is there voltage to the

input side of the stove

limit?

YES

Continued on next

page.

YES

NO

Replace cabinet

limit.

Correct wiring

between stove limit

and cabinet limit.

T032D

54

70172201

Gas

EDC Models (Sheet 2 of 2)

EDC No Heat

continued.

Will Not Heat

Is there voltage to the

output side of the stove

limit?

YES

Is there voltage to

terminal "2" of the ICM

board?

YES

Is there voltage at

terminal "1" of ICM

board?

YES

Is there voltage across

the coils of the gas

valve?

YES

NO

Replace the stove

limit.

Correct wiring

between terminal "2" of ICM board

and stove limit.

Replace ICM board.

Correct wiring

between gas valve

and ICM board.

NO

YES

Unit operational.Is there a flame?

70172201

Is there gas flow

through the gas valve?

YES

Does the igniter spark?

YES

NO

Replace gas valve

coils or complete

gas valve.

Replace high

voltage ignition

cable or igniter.

T033D

55

Will Not Heat

Gas

Manual Timer (Sheet 1 of 2)

NOTE: The following tests are conducted with

the Heat Timer in the "ON" position with the

machine running and calling for heat. Voltage

checks are referenced to transformer neutral.

Is there voltage across

terminals "1" & "6" of

the Temp Control Bd?

YES

Is there voltage across

terminals "5" & "6" of

the Temp Control Bd?

NO

Is the thermistor

shorted or open?

NO

YES

Single and stacked units with and without time

Replace thermistor.

delayboards.

YES

Is there voltage at Air

Flow Switch (AFS)

"N.C." terminal to

transformer neutral?

YES

Is there voltage at

terminal "6" on CR1 to

transformer neutral?

YES

Is there voltage from

terminal "4" on CR1 to

transformer neutral?

YES

Is unit equipped with

time delay board?

Replace inoperative

NO

switch or correct air flow vane operation.

Correct wiring

NO

between A.F.S. and

terminal "6" on CR1.

NO

Replace CR1.

Is the temperature

selection switch

shorted or open?

Temperature

Control Board.

CONTINUED

ON NEXT

PAGE

NO

Replace the

YES

Replace selection

switch.

Is there

voltage to

terminal 3 of

fan motor?

YES

Is there voltage

across terminal

3 & 5 of fan

motor?

NO

Correct wiring

between motor

terminal 5 and

Temp Control Board

terminal 1.

Correct wiring

NO

between fan motor

terminal 3 and CR1

terminal 4.

YES

Replace fan motor.

NO

Is there voltage from

terminal "6" on CR2 to

transformer neutral?

YES

Is there voltage from

terminal "4" on CR2 to

transformer neutral?

YES

Correct wiring

between CR2 terminal "4" &

terminal "1" on

Temp Control

Board.

Correct wiring

NO

between terminal "6"

on CR2 to terminal

NO

Replace CR2.

"4" on CR1.

T044D

56

70172201

Gas

Manual Timer (Sheet 2 of 2)

NO HEAT CONTINUED

Note: Voltage checks are referenced to

transformer neutral.

Will Not Heat

Is there voltage to the

input side of the

Cabinet Limit?

YES

Is there voltage to the

output side of the

Cabinet Limit?

YES

Is there voltage to the

input side of the Stove

Limit?

YES

Is there voltage to the

output side of the Stove

Limit?

NO

Correct wiring

between Cabinet

Limit and Temp

Control Board.

Replace the Cabinet

Limit.

Correct wiring

between Stove limit

and Cabinet Limit.

Replace the Stove

Limit.

NO

Is there voltage across

the coils of the gas

valve?

YES

Is there gas flow

through the gas valve?

YES

Does the igniter spark?

YES

Is there a flame?

NO

Correct wiring

between gas valve

and ICM board.

Replace gas valve

or gas valve coils.

Replace high

voltage cable or

igniter.

YES

Is there voltage across

terminals "2" & "3" of

ICM board?

YES

Is there voltage across

terminals "1" & "3" of

the ICM board?

YES

NO

Correct wiring

betwee ICM board

and Stove limit.

Replace ICM board

YES

UNIT OPERATIONAL

T045D

70172201

57

Will Not Heat

Gas

Rotary Coin Drop (Sheet 1 of 2)

Single & Stacked

Tumblers with

and without time delay.

YES

Is there voltage across

terminals "1" & "6" of

the Temp Control Bd?

YES

Is there voltage across

terminals "5" & "6" of

the Temp Control Bd?

NO

Is the thermistor shorted or open?

NO

Is temperature

selection switch

shorted or open?

NO

Replace the

Temperature

Control Board.

Is there voltage on

terminal "3" of fan motor

to transformer

neutral?

YES

NO

YES

NO

Replace thermistor.

Replace selection

switch.

Correct wiring

between terminal

"3" of fan motor

and "N.C." terminal

on switch "B".

YES

Is there voltage at Air

Flow Switch "N.C."

terminal to transformer

neutral?

YES

Is there voltage at

COM on Switch "B" to

transformer neutral?

YES

Is there voltage from

"N.C." on Switch "B" to

transformer neutral?

YES

Is the unit equipped

with a Time Delay

Board?

NO

Is there voltage from

terminal "6" on CR2 to

transformer neutral?

YES

Replace inoperative

NO

switch or correct air flow vane operation.

Correct wiring

NO

between air flow

switch and COM on

NO

Replace Switch "B".

Correct wiring

NO

between terminal "6"

on CR2 to terminal

"N.C." on Switch "B".

Switch "B".

58

CONTINUED

ON NEXT

PAGE

With fan motor

running is there voltage

from terminal "5" to

transformer

neutral?

YES

Is there voltage on

terminal "1" of Temp

Board to transformer

neutral?

YES

Power supply to

Temp Control Board is good.

NO

Replace Fan Motor.

Correct wiring

between terminal

NO

"1" of Temp Board

to terminal "5"

of fan motor.

Is there voltage from

terminal "4" on CR2 to

transformer neutral?

YES

Correct wiring

between terminal

"4" on CR2 &

terminal "1" on

Temp Control

Board.

NO

Replace CR2.

T090D

70172201

Gas

Rotary Coin Drop (Sheet 2 of 2)

NO HEAT CONTINUED

Note: Voltage checks are referenced to

transformer neutral.

Will Not Heat

Is there voltage to the

input side of the

Cabinet Limit?

YES

Is there voltage to the

output side of the

Cabinet Limit?

YES

Is there voltage to the

input side of the Stove

Limit?

YES

Is there voltage to the

output side of the Stove

Limit?

NO

Correct wiring

between Cabinet

Limit and Temp

Control Board.

Replace the

Cabinet Limit.

Correct wiring

between Stove limit

and Cabinet Limit.

Replace the Stove

Limit.

Is there voltage across

through the gas valve?

Does the igniter spark?

NO

the coils of the gas

valve?

YES

Is there gas flow

YES

Is there a flame?

NO

Correct wiring

between gas valve

and ICM Board.

Replace gas valve

coils or complete

gas valve.

Replace high

voltage ignition

cable or igniter.

YES

Is there voltage across

terminals "2" & "3" of

the ICM Board?

YES

Is there voltage across

terminals "1" & "3" of

the ICM Board?

YES

NO

Correct wiring

between ICM

board and Stove

Limit or neutral.

Replace the ICM

Board.

YES

UNIT

OPERATIONAL

T091D

70172201

59

Will Not Heat

Steam

EDC Models (Sheet 1 of 2)

Note: Tests are conducted with unit running

and calling for heat.

All voltage checks are referenced to

transformer neutral.

Single and Stacked

units.

Is there voltage on

“FS-2” of EDC control?

Is there voltage

on “FS-1” of

EDC control?

YES

Is there voltage on

COM of Airflow

switch?

Is there voltage across

COM & “N.C.” terminal

of Airflow switch?

YES

NO

Replace

thermistor.

NO

Is the

thermistor

operational?

NO

YES

Correct wiring

between “FS-2” and

COM of lint drawer.

Replace EDC

control.

NO

YES

Correct wiring

between COM of

Airflow switch and

“FS-1” of EDC

control.

Check for proper

function of Airflow

switch and replace if

necessary.

Is there voltage on

terminal “3” of fan

motor centrifugal

switch?

YES

Is there voltage across

terminals “3” & “5” of

fan motor centrifugal

switch?

NO

Is there voltage to the

input side of the

cabinet limit?

YES

Is there voltage across

cabinet limit?

NO

YES

NO

YES

Correct wiring

between terminal “3”

of fan motor

centrifugal switch

and terminal “4” of

motor control relay.

Replace fan motor.

Correct wiring

between cabinet

limit and terminal “5”

of fan motor

centrifugal switch.

Replace cabinet

limit.

60

NO

Is there voltage on

terminal “7” of motor

control relay?

YES

Is there voltage across

terminals “7” & “4” of

motor control relay?

NO

Correct wiring

NO

YES

between terminal 7

on motor control

relay and N.C.

terminal on Airflow

switch.

Replace motor

control relay.

Is there voltage to the

input side of the stove

limit?

YES

Continued on next

page.

NO

Correct wiring

between stove limit

and cabinet limit.

T096D

70172201

Steam

EDC Models (Sheet 2 of 2)

Will Not Heat

Is there voltage to the

output side of the stove

limit?

YES

Is there voltage across

steam valve coil?

YES

Does steam valve

operate properly?

YES

NO

Replace the stove

limit.

Correct wiring to steam valve coil.

Repair or replace

steam valve.

70172201

Is heat produced?

YES

Unit operational.

NO

Check for proper

steam supply.

Correct if necessary.

T097D

61

Will Not Heat

Steam

Manual Timer (Sheet 1 of 2)

NOTE: The following tests are conducted with

the Heat Timer in the "ON" position with the

machine running and calling for heat. Voltage

checks are referenced to transformer neutral.

Is there voltage across

terminals "1" & "6" of

the Temp Control Bd?

YES

Is there voltage across

terminals "5" & "6" of

the Temp Control Bd?

NO

Is the thermistor

shorted or open?

NO

YES

Single and stacked units with and without time

delayboards, manual timers.

Replace thermistor.

YES

Is there voltage at Air

Flow Switch "N.C."

terminal to transformer

neutral?

YES

Is there voltage at

terminal "6" on CR1 to

transformer neutral?

YES

Is there voltage from

terminal "4" on CR1 to

transformer neutral?

YES

Is unit equipped with

time delay board?

Adjust the Air Flow

NO

Switch or replace if

NO

between A.F.S. and

terminal "6" on CR1.

NO

inoperative.

Correct wiring

Replace CR1.

Is temperature

selection switch

shorted or open?

Temperature

Control Board.

CONTINUED

ON NEXT

PAGE

NO

Replace the

YES

Replace selection

Is there

voltage to

terminal "3" of

fan motor?

YES

Is there voltage

across terminal

"3" & "5" of fan

motor?

NO

Correct wiring

between motor

terminal "5" and

Temp Control

Board terminal "1".

switch.

NO

Correct wiring

between fan motor

terminal "3" and

CR1 terminal "4".

YES

Replace fan motor.

NO

Is there voltage from

terminal "6" on CR2 to

transformer neutral?

YES

Is there voltage from

terminal "4" on CR2 to

transformer neutral?

YES

Correct wiring between CR2 terminal "4" &

terminal "1" on

Temp Control

Board.

Correct wiring

NO

between terminal "6"

on CR2 to terminal

NO

Replace CR2.

"4" on CR1.

T019D

62

70172201

Steam

Manual Timer (Sheet 2 of 2)

NO HEAT CONTINUED

Note: Voltage checks are referenced to

transformer neutral.

Will Not Heat

Is there voltage to the

input side of the

Cabinet Limit?

YES

Is there voltage to the

output side of the

Cabinet Limit?

YES

Is there voltage to the

input side of the Stove

Limit?

YES

Is there voltage to the

output side of the Stove

Limit?

NO

Correct wiring

between Cabinet

Limit and Temp

Control Board.

Replace the Cabinet

Limit.

Correct wiring

between Stove limit

and Cabinet Limit.

Replace the Stove

Limit.

Is heat produced?

YES

UNIT OPERATIONAL

Check for proper

NO

steam supply.

Correct if necessary.

YES

Is there voltage across

the coil of the steam

valve?

YES

Do the steam valves

operate properly?

YES

NO

Correct wiring to

the steam valve.

Replace steam

valve.

T020D

70172201

63

Will Not Heat

Steam

OPL Microprocessor (Sheet 1 of 3)

Testing conducted with unit running and calling for heat.

Reference voltage to

transformer neutral

Is there votlage at

terminal "5" on OPL

Micro?

terminal "3".

YES

Continued on next

page column 2.

Is there voltage across

terminals "2" & "3" of

transformer secondary?

NO

Replace

transformer.

NO

Is the thermister

operating properly?

YES

Reference voltage to

supply neutral.

Is power supplied to

unit?

YES

Is there voltage to input

of primary fuse(s)?

YES

Is there voltage to output of primary

fuse(s)?

NO

Replace thermister.

Connect supply

and run unit.

Correct wiring between primary fuse and supply.

Change primary

fuse.

YES

Note: Reference voltage to

transformer secondary neutral

Is there voltage to input

of secondary fuse?

YES

Is there voltage to

output of secondary

fuse?

YES

Is there voltage to

"N.O" terminal of door

switch?

YES

With door closed is

there voltage to "COM"

of door switch?

terminal "3".

NO

Correct wiring

between secondary

fuse and

transformer.

Replace secondary

fuse.

Correct wiring

between "N.O."

terminal of door

switch and

secondary fuse.

Check for proper

operation, replace

door switch if

necessary.

64

YES

Is there voltage across

terminals "1" & "2" on

primary of

transformer?

YES

NO

between transformer

Correct wiring

and primary fuse.

YES

Is there voltage to

"N.O." of lint panel

switch?

YES

Continued on next

page column 1.

NO

Correct wiring

between "N.O." of

lint panel switch

and "COM" of door

switch.

T003D

70172201

Steam

OPL Microprocessor (Sheet 2 of 3)

NO HEAT

Column 1

Column 2

The following tests are

conducted with the unit running

and calling for heat.

Will Not Heat

Is there voltage to

"COM" of lint panel

switch with lint panel

closed?

YES

Is there voltage at

terminal "8" of OPL

Micro?

YES

Is there voltage to

terminal "13" of OPL

Micro?

YES

Is there voltage at

terminal "6" of OPL

Micro?

YES

Replace OPL Micro.

NO

Check for proper

operation and

replace lint panel

switch if necessary.

Correct wiring

between terminal

"8" of OPL Micro

and "COM" of lint

panel switch.

Replace OPL Micro.

Correct wiring

between terminal

"6" & "13" on OPL

Micro.

Three phase

Is there voltage at

"COM" of air flow

switch?

YES

Is there voltage at

"N.C." terminal of air

flow switch?

YES

Is the unit supplied with

single phase or three

phase power?

Single phase

Is there voltage at

terminal "7" of motor

control relay ?

YES

NO

replace if necessary.

NO

"7" of motor control

relay and "N.C." of

Correct wiring

between "COM" &

OPL Micro.

Check for proper

oprerationand

Correct wiring

between terminal

air flow switch.

Is there voltage to

terminal 14 on motor

control relay?

YES

Is there votlage to

terminal 13 of motor

control relay?

NO

Replace motor

control relay.

between terminal 14

NO

YES

Correct wiring

on motor control

relay and N.C.

terminal of air flow

switch.

Is there voltage at

terminal "4" of motor

control relay?

YES

Is there voltage at terminal "3" of fan

motor centrifugal

switch?

YES

Is there voltage at terminal "5" of fan

motor centrifugal

switch?

YES

Continued on next

page.

NO

Replace motor

control relay.

Correct wiring

between fan motor

centrifugal switch and motor control

relay.

Replace fan motor.

T004D

70172201

65

Will Not Heat

Steam

OPL Microprocessor (Sheet 3 of 3)

Continued from column 2 of

previous page.

Is there voltage to the

input of the cabinet

limit?

YES

Is there voltage to

output of cabinet limit?

YES

Is there voltage to input

of stove limit?

YES

Is there voltage to the

output side of the stove

limit?

NO

Correct wiring

between cabinet

limit and terminal "5"

of fan motor

centrifugal switch.

Replace cabinet

limit.

Correct wiring

between stove limit

and cabinet limit.

Replace stove limit.

Is heat produced?

YES

UNIT

OPERATIONAL.

NO

Check for proper

steam supply.

Correct if necessary.

66

YES

Is there voltage across

steam valve coil?

YES

Does the steam valve

operate properly?

YES

NO

Correct wiring to steam valve coil.

Replace steam

valve.

T005D

70172201

Steam

Rotary Coin Drop (Sheet 1 of 2)

Single & Stacked

Tumblers with

and without time delay.

Will Not Heat

Is there voltage across

terminals "1" & "6" of

YES

Is there voltage across

terminals "5" & "6" of

terminal "3" of fan motor to

transformer neutral?

the Temp Control

Board?

YES

the Temp Control

Board?

NO

Is the thermistor

shorted or open?

NO

Is temerature

selection switch

shorted or open?

NO

Replace the

Temperature

Control Board.

Is there voltage on

YES

NO

YES

Replace thermistor.

YES

NO

Replace selection

switch.

Correct wiring

between terminal

"3" of fan motor

and N.C. terminal

on switch B.

YES

Is there voltage at Air

Flow Switch "N.C."

terminal to transformer

neutral?

YES

Is there voltage at

COM on Switch "B" to

transformer neutral?

YES

Is there voltage from

"N.C." on Switch "B" to

transformer neutral?

YES

Is the unit equipped

with a Time Delay

Board?

NO

Is there voltage from

terminal "6" on CR2 to

transformer neutral?

YES

Adjust the Air Flow

NO

Switch or replace if

Correct wiring

NO

between A.F.S. and COM on Switch "B".

NO

Replace Switch "B".

NO

between terminal "6"

on CR2 to terminal

"N.C." on Switch "B".

inoperative.

Correct wiring

70172201

CONTINUED

ON NEXT

PAGE

With fan motor

running is there voltage

from terminal "5" to

transformer

neutral?

YES

Is there voltage on

terminal "1"of Temp

Board to transformer

neutral?

YES

Power supply to

Temp Control

Board is good.

NO

Replace Fan Motor.

Correct wiring

between terminal

NO

"1" of Temp Board

to terminal "5" of

fan motor.

Is there voltage from

terminal "4" on CR2 to

transformer neutral?

YES

Correct wiring

between terminal

"4" on CR2 &

terminal "1" on

Temp Control

Board.

NO

Replace CR2.

T066D

67

Will Not Heat

Steam

Rotary Coin Drop (Sheet 2 of 2)

NO HEAT CONTINUED

Note: Voltage checks are referenced to

transformer neutral.

Is there voltage to the

input side of the

Cabinet Limit?

YES

Is there voltage to the

output side of the

Cabinet Limit?

YES

Is there voltage to the

input side of the Stove

Limit?

YES

Is there voltage to the

output side of the Stove

Limit?

NO

Correct wiring

between Cabinet

Limit and Temp

Control Board.

Replace the Cabinet

Limit.

Correct wiring

between Stove limit

and Cabinet Limit.

Replace the Stove

Limit.

Is heat produced?

YES

UNIT

OPERATIONAL

Check for proper

NO

steam supply.

Correct if necessary.

YES

Is there voltage across

coil of steam valve?

YES

Does the steam valve

operate properly?

YES

NO

Correct wiring to

steam valve

Replace steam

valve.

T067D

68

70172201