Download Alliance Laundry Systems JTD32DG Troubleshooting guide

Troubleshooting
Electronic
Control
Tumbler
Troubleshooting Guide
JTD30XG-EC, JTB30XG-EC, STB30XG-3C,
JTD32DG-EC, STD32DG-EC
DRYING DOOR OPEN COOL DOWN
TIME REMAINING
PRICE
INSERT COINS
PUSH START
FABRICS AND TEMPERATURES
NORMAL
HIGH
TEMP
PERM
PRESS
MED TEMP
START
DELICATES
LOW
TEMP
TUMBLE
NO
HEAT
C541i
Part No. M412010R2
July 1999
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 that you understand and have the skills to
carry out.
• 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.
W006R1
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 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 these products. These factors MUST BE supplied by the
person(s) installing, maintaining or operating the product.
Always contact your dealer, distributor, service agent or the manufacturer about any problems or conditions you do not
understand.
Recognize Safety Symbols, Words and Labels
aDANGER—Immediate hazards which WILL result in serious injury or death
aWARNING—Hazards or unsafe practices which COULD result in serious injury or death.
aCAUTION—Hazards or unsafe practices which COULD result in minor or moderate injury
or product or property damage.
W009
© Copyright 1999, 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.
M412010
1
TROUBLESHOOTING SectionTABLE
2
OF CONTENTS
SECTION 1
Electronic Control Error Code Listing .................................................................... 5
SECTION 2 – TROUBLESHOOTING
Cannot Perform Infrared (IR) Communication ....................................................... 7
Coins Ignored When Entered ................................................................................ 8
Electronic Control Has No Visible Display ............................................................. 9
Stack Tumbler
No Motor Run – "Door Open" Analysis ..................................................... 10
No Motor Run – "Push Start" Analysis ..................................................... 12
No Heat Analysis ...................................................................................... 14
Safety Circuit Analysis .............................................................................. 16
Tumbler
No Motor Run – "Door Open" Analysis ..................................................... 18
No Motor Run – "Push Start" Analysis ..................................................... 20
No Heat Analysis ...................................................................................... 22
Safety Circuit Analysis .............................................................................. 24
NOTE: All voltage checks in this Troubleshooting Guide are 120 Volts. There should be
little variation from this voltage range.
M412010
3
SECTION 1
Electronic Control Error Code Listing
TROUBLESHOOTING Section 2
Listed below are some of the error codes that may appear on the Electronic Control.
"E:00"
General Error
"E:01"
Proximity Error
Micro-wand IIIe is improperly aimed at Infrared communicator
(angle or distance): Re-aim Micro-wand IIIe.
"E:02"
IR Communication
Disconnection
Micro-wand IIIe prematurely pulled away from Electronic Control
during infrared communication: Maintain infrared connection between
Micro-wand IIIe and Electronic Control during communication.
"E:05"
Invalid Value
Communication
Invalid code downloaded from Micro-wand IIIe to Electronic Control:
"E:07"
Inoperative Control
Replace Electronic Control.
"E:08"
Inoperative Control
Replace Electronic Control.
"E:09"
Proximity Error
Micro-wand IIIe is improperly aimed at Infrared communicator (angle
or distance): Re-aim Micro-wand IIIe.
"E:0A"
Proximity Error
Micro-wand IIIe is improperly aimed at Infrared communicator (angle
or distance): Re-aim Micro-wand IIIe.
"E:0B"
IR Communication
Disconnection
Micro-wand IIIe prematurely pulled away from Electronic Control
during infrared communication: Maintain infrared connection between
Micro-wand IIIe and Electronic Control during communication.
"E:0C"
IR Communication
Disconnection
Micro-wand IIIe prematurely pulled away from Electronic Control
during infrared communication: Maintain infrared connection between
Micro-wand IIIe and Electronic Control during communication.
"E:0F"
IR Communicator
Programmed Off
Reprogram infrared communicator on.
"Err"
Coin Error
1) Inoperative coin sensor: Run the Coin Drop Diagnostic test.
2) Coin drop obstruction: Check coin drop area and remove any
obstructions.
3) Customer tampering: Evaluate security procedures.
"OP"
Open Thermistor
Physical opening in the thermistor circuit: Change thermistor.
"SH"
Shorted Thermistor
Dead short in the thermistor circuit: Change thermistor.
NOTE: Disconnecting power to the unit may clear the error display.
M412010
5
TROUBLESHOOTING Section 2
SECTION 2
Troubleshooting
CANNOT PERFORM INFRARED COMMUNICATION
ATTEMPT TO
COMMUNICATE WITH THE
ELECTRONIC CONTROL FROM
THE MICRO-WAND.
IS
THERE ANY
ACKNOWLEDGEMENT
OF ANY KIND FROM
THE ELECTRONIC
CONTROL?
NO
NOTE:
APPLICABLE MODELS ONLY.
AIM MICRO-WAND
CLOSER AND TRY
AGAIN.
IS
THERE ANY
CONTROL
RESPONSE?
NO
CHECK THE FOLLOWING:
– LOW BATTERY ON MICRO-WAND.
– IS THE (IR) ON THE CONTROL
COVERED OR BLOCKED?
– IF NEEDED, REPLACE ELECTRONIC
CONTROL BOARD.
YES
YES
DOES
THE ELECTRONIC
CONTROL DISPLAY
"E:OF" OR
"– C–" ?
"– C–"
– IS THE (IR) CAP PROPERLY
ATTACHED TO THE MICRO-WAND?
COMMUNICATION
SEQUENCE CHECKS
OUT.
"E:OF"
CHECK THE FOLLOWING:
– (IR) DISABLED BY MANUAL PROG.
– IS THE (IR) ON THE CONTROL
COVERED OR BLOCKED?
– IF NEEDED, CHANGE ELECTRONIC
CONTROL BOARD.
M412010
T227S
7
Section 2 TROUBLESHOOTING
COINS IGNORED WHEN ENTERED
START COIN DROP
DIAGNOSTIC TEST.
ENTER
SEVERAL
COINS
DOES THE
ELECTRONIC
CONTROL DISPLAY
COIN COUNTER
INCREMENT
PROPERLY?
YES
MAKE SURE THE
CONTROL IS RESET
PROPERLY AND
PROMPTING FOR A
VEND.
NOTE:
IN THIS SECTION, BRING THE CONTROL
OUT OF THE DIAGNOSTIC MODE. ALSO,
MAKE SURE THE CONTROL IS NOT IN A
FREE VEND MODE.
NO
OPEN
CONTROL
PANEL
CHECK
COIN
DROP
IS
CONNECTION
"H2" FIRMLY SEATED
IN ITS RECEPTACLE
ON THE
CONTROL?
NO
RECONNECT AND
RUN TEST AGAIN.
YES
IS
THE 3-PIN
CONNECTOR PLUG
FIRMLY SEATED IN
ITS RECEPTACLE?
NO
RECONNECT AND
RUN TEST AGAIN.
YES
ARE
WIRES EXITING
THE COIN DROP
OPTICAL SENSOR
CRACKED OR
BROKEN?
YES
REPLACE
COIN DROP.
NO
RETEST AGAIN, IF NOT SUCCESSFUL
THE FOLLOWING IS THE PROBLEM:
– REPLACE COIN DROP.
IF THE PROBLEM STILL EXISTS:
– REPLACE ELECTRONIC CONTROL.
T226S
8
M412010
TROUBLESHOOTING Section 2
ELECTRONIC CONTROL HAS NO VISIBLE DISPLAY
THE ELECTRONIC CONTROL
HAS NO LED OR VFD
FUNCTIONING ON THE
CONTROL BOARD.
IS THE
POWER CORD
PLUGGED IN?
NO
PLUG ELECTRONIC CONTROL
UNIT INTO ELECTRICAL
OUTLET.
YES
OPEN
CONTROL
PANEL
IS
THERE VOLTAGE
AT "H4-2" BLK TO
"H4-3" WHITE?
YES
NO
DISCONNECT POWER AND CHECK
FOR BROKEN, LOOSE, OR INCORRECT
WIRING FROM THE ELECTRICAL
OUTLET TO THE EC CONTROL.
NOTE:
THIS VOLTAGE CHECK CONFIRMS THAT
MAIN POWER IS PRESENT TO THE CONTROL.
REPLACE ELECTRONIC
CONTROL.
T228S
M412010
9
STACK TUMBLER
Section 2 TROUBLESHOOTING
NO MOTOR RUN – – "DOOR OPEN" ANALYSIS
LINE VOLTAGE TO
ELECTRONIC CONTROL
BOARD.
(#) NUMBERS NEXT TO VOLTAGE CHECKS
CORRESPOND TO THE LOCATIONS MARKED
ON THE WIRING SCHEMATIC.
YES
DISPLAY ON.
IS THE
COIN COUNTER
COUNTING DOWN
AS COINS ARE
ENTERED IN
THE DROP?
NO
YES
IS THE
"DOOR OPEN"
FLASHING?
NO
YES
CLOSE DOOR AND
CHECK BRACKET THAT
OPERATES SWITCH.
STILL
FLASHING
NO
(1)
OPEN CONTROL-VOLTAGE CHECK.
RED/BLACK "H4-6" TO "H4-3".
CHECK MAIN POWER
TO TUMBLER.
RED "H4-1" TO "H4-3".
REPLACE INOPERATIVE COIN DROP.
THIS CHECKS VOLTAGE ON DOOR SWITCH POLES COMING
INTO THE EC CONTROL BOARD.
IF THE PROBLEM STILL EXISTS, REFER TO
THESE OTHER TROUBLESHOOTING GUIDES:
"ELECTRONIC CONTROL HAS NO VISIBLE DISPLAY" OR
"COINS IGNORED WHEN ENTERED".
IF VOLTAGE IS PRESENT REPLACE CONTROL.
STILL
FLASHING
(2)
NOTE:
THIS TEST IS BASED ON
THE ASSUMPTION THAT
THE "PUSH START" BUTTON
HAS BEEN PRESSED.
DOES
COLON FLASH
AND "PUSH START" GO
OFF? DOES DRYING OR
COOL DOWN DISPLAY ON
THE ELECTRONIC
CONTROL AFTER
SATISFIED
VEND?
REFER TO OPERATION
AND PROGRAMMING
MANUALS TO REVIEW THE
CORRECT STATUS THE
CONTROL SHOULD BE IN AFTER
THE VEND PRICE HAS BEEN
SATISFIED.
YES
(3)
YES
AND STILL 1) OHM TEST DOOR SWITCH.
FLASHING
2) OHM TEST LINT DRAWER
SWITCH.
NO
NO
REPLACE ELECTRONIC
CONTROL BOARD.
AFTER CHECKING
WIRING AND CONNECTIONS,
REPLACE INOPERATIVE
MOTOR.
10
GO
TO JUMPER
BLOCK AT REAR
OF TUMBLER. VOLTAGE
CHECK
BROWN TO NEUTRAL,
IS VOLTAGE
THERE?
AFTER CHECKING
WIRING AND CONNECTIONS,
REPLACE INOPERATIVE
BELT GUARD SWITCH.
3) CHECK WIRING,
CONNECTIONS, AND
ELECTRONIC CONTROL.
REPLACE INOPERATIVE
COMPONENTS.
NOTE:
IF ANY OF THESE COMPONENTS
FAIL THE OHM TEST, REPLACE
THE INOPERATIVE PART.
T229S
M412010
STACK TUMBLER
TROUBLESHOOTING Section 2
1
120V / 50-60 HZ / IPH
TB1
UPPER
MICROCOMPUTER CONTROL
N
H3-3
H4-3
TEMPERATURE REGULATING CIRCUIT
CONTROLS HEAT RELAY
WHT
N
SPARK
IGNITER
H4-2
YEL
L
M412010
ORG
RED
WHT
BLK
ORG
WHT
FIRST COIL
BLK
SECOND COIL
AIR FLOW
SWITCH
ORG
PNK
BLU
CAP
THERM
PROT
*
WHT
BLU
GAS VALVE
3
AUX
MOTOR
COIN DROP
SENSOR
GRN
FS-2
RED
RUN
RUN
GRN
BLK
WHT
5
YE
1
FS-1
ORG
BLK
COIN VAULT
2
H4-4
YEL
BLK
WHT
BRN
K2
H4-5
RED
SERVICE
DOOR
BLK / BRN
K1
RED
H2-1
H2-2
H2-3
H2-5
H2-6
H2-4
GRY
BLK
BRN
BLK / BRN
BELT GUARD
SWITCH
BLK
HEAT
RELAY
L1 (HOT)
MOTOR
RELAY
AUDIT CONTROL
CIRCUIT
LINT DRAWER
SWITCH
BRN
BRN
V2 (VRET)
RED
H4-1
RED
RED
YEL
BLK
BLK /
BRN
I.E.I.* BOARD
DOOR SENSING CIRCUIT ALLOWS
CONTROL TO TURN ON MOTOR RELAY
ONLY WHEN DOOR IS CLOSED AND
START SWITCH PRESSED
L2 (RET)
DOOR SWITCH
RED/ RED/
BRN
BLK BLK
H4-6
WHT
BLK
WHT
BLK
BLU
H3-1
V1 (VALVE)
IN USE
H6-1
H6-2
G (BUR GRD)
L1
TB1
THERMISTOR
AVAILABLE OUTPUT
TRANSISTOR IS
"OFF" WHEN MACHINE
IS RUNNING
MAIN 2
CABINET
HI-LIMIT
THERMOSTAT
WHT
STOVE
HI-LIMIT
THERMOSTAT
4
MAIN 1
I.E.I. = INSTANT ELECTRONIC IGNITION
3
T230S
11
STACK TUMBLER
Section 2 TROUBLESHOOTING
NO MOTOR RUN – – "PUSH START" ANALYSIS
"PUSH START" IS FLASHING
AND "PUSH START" BUTTON
HAS BEEN PRESSED.
(#) NUMBERS NEXT TO VOLTAGE CHECKS
CORRESPOND TO THE LOCATIONS MARKED
ON THE WIRING SCHEMATIC.
THERE IS NO MOTOR RUN.
GO THROUGH THE
FOLLOWING CHECKS:
DOES
COLON FLASH
AND "PUSH START" GO
OFF? DOES DRYING OR
COOL DOWN DISPLAY ON
THE ELECTONIC
CONTROL AFTER
SATISFIED
VEND?
NOTE:
THIS TEST IS BASED ON
THE ASSUMPTION THAT
THE "PUSH START" BUTTON
HAS BEEN PRESSED.
NO
REPLACE ELECTRONIC
CONTROL BOARD.
REFER TO OPERATION AND
PROGRAMMING MANUALS
TO REVIEW THE CORRECT
STATUS THE CONTROL
SHOULD BE IN AFTER THE
VEND PRICE HAS BEEN
SATISFIED.
YES
(1)
(2)
CHECK
VOLTAGE AT
RED "H4-1" TO "H4-3",
IS THERE
VOLTAGE?
YES
CHECK
VOLTAGE AT
YELLOW "H4-4"
TO "H4-3",
IS THERE
VOLTAGE?
NO
NO
(4)
OPEN FRONT
PANEL
CHECK
VOLTAGE AT
BLK/BRN AT DOOR
SWITCH TO GROUND,
IS THERE
VOLTAGE?
(3)
RELAY "K1" IS NOT
CLOSING.
REPLACE EC BOARD.
YES
YES
GO
TO JUMPER
BLOCK AT REAR
OF UNIT. CHECK VOLTAGE
YELLOW TO NEUTRAL,
IS THERE
VOLTAGE?
YES
AFTER CHECKING
WIRING AND CONNECTIONS,
REPLACE INOPERATIVE
MOTOR.
NO
REPLACE INOPERATIVE WIRING.
REPLACE
INOPERATIVE
DOOR SWITCH.
NO
REPLACE INOPERATIVE WIRING.
12
T231S
M412010
STACK TUMBLER
TROUBLESHOOTING Section 2
4
1
120V / 50-60 HZ / IPH
TB1
UPPER
MICROCOMPUTER CONTROL
N
H3-3
H4-3
TEMPERATURE REGULATING CIRCUIT
CONTROLS HEAT RELAY
WHT
N
SPARK
IGNITER
H4-2
BLK
COIN VAULT
YEL
L
YEL
ORG
WHT
BLU
WHT
BLK
ORG
GAS VALVE
WHT
FIRST COIL
BLK
SECOND COIL
AIR FLOW
SWITCH
ORG
3
PNK
BLU
CAP
AUX
THERM
PROT
MOTOR
COIN DROP
SENSOR
GRN
FS-2
RED
RUN
RUN
GRN
BLK
WHT
5
YE
1
FS-1
ORG
BRN
BLK
WHT
BLK / BRN
H4-4
RED
SERVICE
DOOR
K2
H4-5
RED
H2-1
H2-2
H2-3
H2-5
H2-6
H2-4
GRY
BLK
BRN
BLK / BRN
BELT GUARD
SWITCH
BLK
HEAT
RELAY
K1
L1 (HOT)
MOTOR
RELAY
AUDIT CONTROL
CIRCUIT
LINT DRAWER
SWITCH
BRN
BRN
V2 (VRET)
RED
H4-1
RED
RED
RED
BLK
BLK /
BRN
I.E.I.* BOARD
DOOR SENSING CIRCUIT ALLOWS
CONTROL TO TURN ON MOTOR RELAY
ONLY WHEN DOOR IS CLOSED AND
START SWITCH PRESSED
H4-6
L2 (RET)
DOOR SWITCH
RED/ RED/
BLK BLK
YEL
BRN
WHT
BLK
WHT
BLK
BLU
H3-1
V1 (VALVE)
IN USE
H6-1
H6-2
G (BUR GRD)
L1
TB1
THERMISTOR
AVAILABLE OUTPUT
TRANSISTOR IS
"OFF" WHEN MACHINE
IS RUNNING
WHT
CABINET
HI-LIMIT
THERMOSTAT
STOVE
HI-LIMIT
THERMOSTAT
4
MAIN 2
2
MAIN 1
3
*
M412010
I.E.I. = INSTANT ELECTRONIC IGNITION
T232S
13
STACK TUMBLER
Section 2 TROUBLESHOOTING
NO HEAT ANALYSIS
DURING OPERATION AN "OP"
OR "SH" MAY BE DISPLAYED.
IF "SH" OR "OP" APPEAR, DO
THE FOLLOWING CHECKS:
THIS INDICATES AN OPEN OR
SHORTED THERMISTOR.
– CHECK WIRING AT THERMISTOR.
USE DIAGNOSTIC TEST
"DRYER ON TEMPERATURE TEST".
– REPLACE THERMISTOR.
NOTE:
REFER TO OPERATION AND
PROGRAMMING MANUAL
TO OBTAIN DIAGNOSTIC
TEST INFORMATION. (1)
DOES THE
CYLINDER TEMP
CHECK OUT ACCORDING
TO THE DIAGNOSTIC
TEST?
YES
NOTE:
THIS TEST ASSUMES
MOTOR RUNS.
CHECK
VOLTAGE AT
RED "FS–1" TO "H4-3",
IS THERE
VOLTAGE?
NO
YES
(2)
CHECK
VOLTAGE AT
ORANGE "FS–2"
TO "H4-3",
IS THERE
VOLTAGE?
NO
NO
CHECK WIRING FROM
MOTOR TO CONTROL.
IF OKAY, REPLACE
INOPERATIVE MOTOR.
AFTER CHECKING WIRING
AND CONNECTIONS,
REPLACE THERMISTOR.
(3)
REPLACE ELECTRONIC
CONTROL BOARD.
YES
GO
TO JUMPER
BLOCK IN REAR
OF TUMBLER.
CHECK VOLTAGE
BLUE TO NEUTRAL,
IS THERE
VOLTAGE?
YES
NO
REFER TO TROUBLESHOOTING
GUIDE "SAFETY CIRCUIT
ANALYSIS", SEE PAGE 12.
(4)
IS THE
SPARK IGNITER
ACTIVATING?
YES
NO
CHECK
VOLTAGE AT
GAS VALVE
BLACK TO NEUTRAL,
IS THERE
VOLTAGE?
YES
CHECK AND REPLACE
INOPERATIVE WIRING
AT THE GAS VALVE.
REPLACE GAS VALVE
OR GAS VALVE COILS.
NO
(5)
CHECK
VOLTAGE
"L1" ON I.E.I. BOARD
TO GROUND,
IS THERE
VOLTAGE?
YES
NO
REFER TO STACKED TUMBLER
TROUBLESHOOTING GUIDE
"SAFETY CIRCUIT ANALYSIS".
14
CHECK IGNITER
ADJUSTMENT INSURE
A GOOD IGNITER CABLE
CONNECTION ON I.E.I.
INSURE GOOD WIRING
CONNECTION AT THE
I.E.I. BOARD.
REPLACE I.E.I.
CONTROL BOARD.
REPLACE I.E.I.
CONTROL BOARD.
T233S
M412010
STACK TUMBLER
TROUBLESHOOTING Section 2
120V / 50-60 HZ / IPH
TB1
UPPER
MICROCOMPUTER CONTROL
N
5
H3-3
H4-3
TEMPERATURE REGULATING CIRCUIT
CONTROLS HEAT RELAY
WHT
N
SPARK
IGNITER
H4-2
L
YE
RUN
M412010
ORG
GAS VALVE
FIRST COIL
WHT
BLK
SECOND COIL
ORG
3
PNK
BLU
CAP
THERM
PROT
*
BLK
WHT
AIR FLOW
SWITCH
AUX
MOTOR
RED
COIN DROP
SENSOR
WHT
BLU
RED
5
RUN
BLK
WHT
YEL
GRN
FS-2
YEL
GRN
BLK
COIN VAULT
1
FS-1
YEL
WHT
BRN
BLK
BLK / BRN
H4-4
RED
SERVICE
DOOR
K2
H4-5
RED
H2-1
H2-2
H2-3
H2-5
H2-6
H2-4
K1
GRY
BLK
BRN
BLK / BRN
BELT GUARD
SWITCH
BLK
HEAT
RELAY
L1 (HOT)
MOTOR
RELAY
AUDIT CONTROL
CIRCUIT
LINT DRAWER
SWITCH
BRN
BRN
V2 (VRET)
RED
H4-1
ORG
RED
ORG
BLK
BLK /
BRN
I.E.I.* BOARD
DOOR SENSING CIRCUIT ALLOWS
CONTROL TO TURN ON MOTOR RELAY
ONLY WHEN DOOR IS CLOSED AND
START SWITCH PRESSED
L2 (RET)
DOOR SWITCH
RED/ RED/
BLK BLK
H4-6
RED
BRN
WHT
BLK
WHT
BLK
BLU
H3-1
V1 (VALVE)
IN USE
H6-1
H6-2
G (BUR GRD)
L1
TB1
THERMISTOR
AVAILABLE OUTPUT
TRANSISTOR IS
"OFF" WHEN MACHINE
IS RUNNING
MAIN 2
WHT
CABINET
HI-LIMIT
THERMOSTAT
STOVE
HI-LIMIT
THERMOSTAT
4
MAIN 1
I.E.I. = INSTANT ELECTRONIC IGNITION
1
2
4
3
T234S
15
STACK TUMBLER
Section 2 TROUBLESHOOTING
SAFETY CIRCUIT ANALYSIS
IN CASE OF THE I.E.I.
CONTROL BOARD NOT
RECEIVING CONSISTENT
VOLTAGE TO "L1", GO
THROUGH THE
FOLLOWING CHECKS.
(#) NUMBERS NEXT TO VOLTAGE CHECKS
CORRESPOND TO THE LOCATIONS MARKED
ON THE WIRING SCHEMATIC.
GO TO THE REAR OF THE TUMBLER.
OPEN THE FAN HOUSING JUNCTION
BOX.
(1)
CHECK
VOLTAGE
OPEN CONNECTOR
ON THE PINK WIRE AND CHECK
VOLTAGE FROM THE HI-LIMIT
CONDUIT TO GROUND,
IS THERE
VOLTAGE?
YES
AFTER CHECKING WIRING
AND CONNECTIONS, REPLACE
INOPERATIVE AIR FLOW
SWITCH.
NO
CHECKING
STOVE
HI-LIMIT
THERMOSTAT
(2)
CHECK
VOLTAGE AT
THE ORANGE WIRE
GOING TO THE HI-LIMIT
CONDUIT,
IS THERE
VOLTAGE?
YES
AFTER CHECKING WIRING
AND CONNECTIONS, REPLACE
INOPERATIVE STOVE
HI-LIMIT THERMOSTAT.
NO
CHECKING
CABINET
HI-LIMIT
THERMOSTAT
(3)
CHECK
VOLTAGE AT
THE ORANGE WIRE
GOING TO THE JUMPER
BLOCK TO GROUND,
IS THERE
VOLTAGE?
YES
REPLACE CABINET
HI-LIMIT THERMOSTAT.
NO
CHECK AND REPLACE INOPERATIVE
WIRING BETWEEN THE EC CONTROL,
JUMPER BLOCK, AND THE CABINET
HI-LIMIT THERMOSTAT.
16
T235S
M412010
STACK TUMBLER
TROUBLESHOOTING Section 2
120V / 50-60 HZ / IPH
TB1
TB1
THERMISTOR
AVAILABLE OUTPUT
TRANSISTOR IS
"OFF" WHEN MACHINE
IS RUNNING
N
H3-3
H4-3
TEMPERATURE REGULATING CIRCUIT
CONTROLS HEAT RELAY
WHT
N
SPARK
IGNITER
H4-2
L
YE
BLK
WHT
YEL
RUN
M412010
ORG
WHT
BLK
ORG
GAS VALVE
WHT
FIRST COIL
BLK
SECOND COIL
AIR FLOW
SWITCH
ORG
PNK
BLU
CAP
THERM
PROT
*
COIN DROP
SENSOR
WHT
BLU
3
AUX
MOTOR
GRN
GRN
FS-2
RED
5
RUN
FS-1
ORG
BLK
COIN VAULT
1
H4-4
YEL
BLK
WHT
BRN
K2
H4-5
RED
SERVICE
DOOR
BLK / BRN
K1
RED
H2-1
H2-2
H2-3
H2-5
H2-6
H2-4
GRY
BLK
BRN
BLK / BRN
BELT GUARD
SWITCH
BLK
HEAT
RELAY
L1 (HOT)
MOTOR
RELAY
AUDIT CONTROL
CIRCUIT
LINT DRAWER
SWITCH
BRN
BRN
V2 (VRET)
RED
H4-1
RED
RED
RED
BLK
BLK /
BRN
I.E.I.* BOARD
DOOR SENSING CIRCUIT ALLOWS
CONTROL TO TURN ON MOTOR RELAY
ONLY WHEN DOOR IS CLOSED AND
START SWITCH PRESSED
L2 (RET)
DOOR SWITCH
RED/ RED/
BLK BLK
H4-6
YEL
BRN
WHT
BLK
WHT
BLK
BLU
H3-1
V1 (VALVE)
IN USE
H6-1
H6-2
G (BUR GRD)
L1
UPPER
MICROCOMPUTER CONTROL
MAIN 2
CABINET
HI-LIMIT
THERMOSTAT
WHT
STOVE
HI-LIMIT
THERMOSTAT
4
MAIN 1
I.E.I. = INSTANT ELECTRONIC IGNITION
3
2
1
T236S
17
TUMBLER
Section 2 TROUBLESHOOTING
NO MOTOR RUN – – "DOOR OPEN" ANALYSIS
LINE VOLTAGE
TO ELECTRONIC
CONTROL BOARD.
(#) NUMBERS NEXT TO VOLTAGE CHECKS
CORRESPOND TO THE LOCATIONS MARKED
ON THE WIRING SCHEMATIC.
YES
DISPLAY ON.
IS THE
COIN COUNTER
COUNTING DOWN
AS COINS ARE
ENTERED IN
THE DROP?
NO
YES
IS THE
"DOOR OPEN"
FLASHING?
YES
CLOSE DOOR AND
CHECK BRACKET THAT
OPERATES SWITCH.
STILL
FLASHING
NO
NO
(1)
OPEN CONTROL-VOLTAGE CHECK.
RED/BLACK "H4-6" TO "H4-3".
CHECK MAIN POWER
TO TUMBLER.
CHECK AND
REPLACE INOPERATIVE COIN DROP.
THIS CHECKS VOLTAGE ON DOOR
SWITCH POLES COMING INTO
THE EC CONTROL BOARD.
IF THE PROBLEM STILL EXISTS, REFER TO
THESE OTHER TROUBLESHOOTING GUIDES:
"ELECTRONIC CONTROL HAS NO VISIBLE DISPLAY" OR
"COINS IGNORED WHEN ENTERED".
DOES
COLON FLASH
AND "PUSH START" GO
OFF? DOES DRYING OR
COOL DOWN DISPLAY
ON THE ELECTRONIC
CONTROL AFTER
SATISFIED
VEND?
NO
REPLACE ELECTRONIC
CONTROL BOARD.
IF VOLTAGE IS PRESENT,
REPLACE CONTROL.
NOTE:
THIS TEST IS BASED ON
THE ASSUMPTION THAT
THE "PUSH START" BUTTON
HAS BEEN PRESSED.
YES
REFER TO OPERATION AND
PROGRAMMING MANUALS
TO REVIEW THE CORRECT
STATUS THE CONTROL
SHOULD BE IN AFTER THE
VEND PRICE HAS BEEN
SATISFIED.
STILL
FLASHING
CHECK AND REPLACE
INOPERATIVE WIRING
AT DOOR SWITCH.
STILL
FLASHING
REPLACE DOOR SWITCH.
CHECK AND REPLACE
INOPERATIVE
WIRING AND CONNECTIONS.
IF WIRING IS CORRECT,
REPLACE MOTOR.
18
RED "H4-1" TO "H4-3".
T237S
M412010
TUMBLER
TROUBLESHOOTING Section 2
208V/60 HZ / IPH OR 240V/60 HZ / IPH
120V / 60 HZ / IPH
TB1
TB1 TB1
THERMISTOR
AVAILABLE OUTPUT
TRANSISTOR IS
"OFF" WHEN MACHINE
IS RUNNING
N
L2
MICROCOMPUTER CONTROL
IN USE
H6-1
H6-2
H3-1
WHT
L1
H3-3
H4-3
TEMPERATURE REGULATING CIRCUIT
CONTROLS HEAT RELAY
BLK
WHT
N
SPARK
IGNITER
H4-2
DOOR SWITCH
HEAT
RELAY
K1
K2
H4-5
H4-4
FS-1
SERVICE
DOOR
BLK
WHT
GRN
FS-2
ORG
H2-1
H2-2
H2-3
H2-5
H2-6
H2-4
1
WHT
BLU
WHT
BLK
GAS VALVE
WHT
FIRST COIL
BLU
MOTOR
RELAY
V1 (VALVE)
AUDIT CONTROL
CIRCUIT
G (BUR GRD)
H4-1
V2 (VRET)
BLK
L1 (HOT)
BLK
H4-6
L2 (RET)
I.E.I.* BOARD
DOOR SENSING CIRCUIT ALLOWS
CONTROL TO TURN ON MOTOR RELAY
ONLY WHEN DOOR IS CLOSED AND
START SWITCH PRESSED
BLK
BLK
SECOND COIL
COIN DROP
SENSOR
COIN VAULT
L
YE
1
RED
5
RUN
RUN
CAP
AUX
THERM
PROT
MOTOR
*
MAIN 2
BLK
CABINET
HI-LIMIT
THERMOSTAT
STOVE
HI-LIMIT
THERMOSTAT
4
MAIN 1
I.E.I. = INSTANT ELECTRONIC IGNITION
M412010
AIR FLOW
SWITCH
3
T238S
19
TUMBLER
Section 2 TROUBLESHOOTING
NO MOTOR RUN – – "PUSH START" ANALYSIS
"PUSH START" IS FLASHING
AND THERE IS NO MOTOR
RUN ON THE TUMBLER.
(#) NUMBERS NEXT TO VOLTAGE CHECKS
CORRESPOND TO THE LOCATIONS MARKED
ON THE WIRING SCHEMATIC.
GO THROUGH THE
FOLLOWING CHECKS:
DOES
COLON FLASH
AND "PUSH START" GO
OFF? DOES DRYING OR
COOL DOWN DISPLAY
ON THE ELECTRONIC
CONTROL AFTER
SATISFIED
VEND?
NOTE:
THIS TEST IS BASED ON
THE ASSUMPTION THAT
THE "PUSH START" BUTTON
HAS BEEN PRESSED.
NO
REPLACE ELECTRONIC
CONTROL BOARD.
REFER TO OPERATION AND
PROGRAMMING MANUALS
TO REVIEW THE CORRECT
STATUS THE CONTROL
SHOULD BE IN AFTER THE
VEND PRICE HAS BEEN
SATISFIED.
YES
(1)
(2)
CHECK
VOLTAGE AT
RED "H4–1" TO "H4-3",
IS THERE
VOLTAGE?
YES
NO
(3)
CHECK
VOLTAGE AT
YELLOW "H4–4"
TO "H4-3",
IS THERE
VOLTAGE?
NO
RELAY "K1" IS NOT
CLOSING.
REPLACE EC BOARD.
OPEN FRONT
PANEL
(4)
CHECK
VOLTAGE AT
BLK WIRE AT DOOR
SWITCH TO GROUND,
IS THERE
VOLTAGE?
YES
YES
GO
TO MOTOR AND
CHECK VOLTAGE AT
YELLOW TO NEUTRAL,
IS THERE
VOLTAGE?
YES
AFTER CHECKING FOR
CORRECT WIRING,
REPLACE INOPERATIVE
MOTOR.
NO
REPLACE INOPERATIVE WIRING
AND CONNECTIONS.
REPLACE
INOPERATIVE
DOOR SWITCH.
NO
REPLACE INOPERATIVE WIRING.
20
T239S
M412010
TUMBLER
TROUBLESHOOTING Section 2
208V/60 HZ / IPH OR 240V/60 HZ / IPH
120V / 60 HZ / IPH
TB1
TB1 TB1
THERMISTOR
AVAILABLE OUTPUT
TRANSISTOR IS
"OFF" WHEN MACHINE
IS RUNNING
N
L2
MICROCOMPUTER CONTROL
IN USE
H6-1
H6-2
H3-1
WHT
L1
H3-3
H4-3
TEMPERATURE REGULATING CIRCUIT
CONTROLS HEAT RELAY
BLK
WHT
N
SPARK
IGNITER
H4-2
DOOR SWITCH
K2
H4-5
FS-1
SERVICE
DOOR
BLK
WHT
GRN
FS-2
ORG
H4-4
WHT
BLU
WHT
BLK
GAS VALVE
WHT
FIRST COIL
BLU
K1
H2-1
H2-2
H2-3
H2-5
1
H2-6
H2-4
4
HEAT
RELAY
V1 (VALVE)
MOTOR
RELAY
AUDIT CONTROL
CIRCUIT
G (BUR GRD)
H4-1
V2 (VRET)
BLK
L1 (HOT)
BLK
H4-6
L2 (RET)
I.E.I.* BOARD
DOOR SENSING CIRCUIT ALLOWS
CONTROL TO TURN ON MOTOR RELAY
ONLY WHEN DOOR IS CLOSED AND
START SWITCH PRESSED
BLK
BLK
SECOND COIL
3
COIN DROP
SENSOR
COIN VAULT
L
YE
1
RUN
AIR FLOW
SWITCH
RED
5
RUN
3
CAP
AUX
THERM
PROT
MOTOR
*
MAIN 2
BLK
STOVE
HI-LIMIT
THERMOSTAT
4
2
MAIN 1
I.E.I. = INSTANT ELECTRONIC IGNITION
M412010
CABINET
HI-LIMIT
THERMOSTAT
T240S
21
TUMBLER
Section 2 TROUBLESHOOTING
NO HEAT ANALYSIS
DURING OPERATION AN "OP"
OR "SH" MAY BE DISPLAYED.
IF "SH" OR "OP" APPEAR, DO
THE FOLLOWING CHECKS:
THIS INDICATES AN OPEN OR
SHORTED THERMISTOR.
(#) NUMBERS NEXT TO VOLTAGE CHECKS
CORRESPOND TO THE LOCATIONS MARKED
ON THE WIRING SCHEMATIC.
– CHECK WIRING AT THERMISTOR.
USE DIAGNOSTIC TEST
"DRYER ON TEMPERATURE TEST".
– REPLACE THERMISTOR.
NOTE:
THIS TEST ASSUMES
MOTOR RUNS.
(1)
DOES THE
CYLINDER OR
TEMPERATURE CHECK
OUT ACCORDING
TO THE
DIAGNOSTIC
TEST?
YES
CHECK
VOLTAGE AT
RED "FS-1" TO "H4-3",
IS THERE
VOLTAGE?
NO
YES
NO
AFTER CHECKING FOR CORRECT
WIRING, REPLACE INOPERATIVE
THERMISTOR.
(2)
CHECK
VOLTAGE AT
ORANGE "FS-2"
TO "H4-3",
IS THERE
VOLTAGE?
YES
NO
CHECK WIRING FROM MOTOR
TO CONTROL. IF OKAY,
REPLACE INOPERATIVE MOTOR.
REPLACE ELECTRONIC
CONTROL BOARD.
(3)
IS THE
SPARK IGNITER
ACTIVATING?
YES
NO
CHECK
VOLTAGE AT
GAS VALVE
BLACK TO NEUTRAL,
IS THERE
VOLTAGE?
YES
CHECK AND REPLACE
INOPERATIVE WIRING
AT THE GAS VALVE.
REPLACE GAS VALVE
OR GAS VALVE COILS.
NO
(4)
CHECK
VOLTAGE
"L1" ON I.E.I. BOARD
TO GROUND,
IS THERE
VOLTAGE?
YES
CHECK IGNITER AND CABLE
TO I.E.I., IF WIRING
CORRECT REPLACE I.E.I.
CONTROL BOARD.
CHECK WIRING AT I.E.I.
CONTROL, IF WIRING
CORRECT REPLACE
I.E.I. CONTROL BOARD.
NO
REFER TO TUMBLER
TROUBLESHOOTING GUIDE
"SAFETY CIRCUIT ANALYSIS".
22
T241S
M412010
TUMBLER
TROUBLESHOOTING Section 2
208V/60 HZ / IPH OR 240V/60 HZ / IPH
120V / 60 HZ / IPH
TB1
TB1 TB1
THERMISTOR
AVAILABLE OUTPUT
TRANSISTOR IS
"OFF" WHEN MACHINE
IS RUNNING
N
L2
MICROCOMPUTER CONTROL
IN USE
H6-1
H6-2
H3-1
WHT
L1
4
H3-3
H4-3
TEMPERATURE REGULATING CIRCUIT
CONTROLS HEAT RELAY
BLK
WHT
N
SPARK
IGNITER
H4-2
DOOR SWITCH
HEAT
RELAY
K2
H4-5
H4-4
FS-1
SERVICE
DOOR
BLK
WHT
GRN
FS-2
WHT
BLU
WHT
BLK
GAS VALVE
WHT
FIRST COIL
BLU
K1
V1 (VALVE)
MOTOR
RELAY
ORG
H2-1
H2-2
H2-3
H2-5
H2-6
H2-4
AUDIT CONTROL
CIRCUIT
G (BUR GRD)
H4-1
V2 (VRET)
BLK
L1 (HOT)
BLK
H4-6
L2 (RET)
I.E.I.* BOARD
DOOR SENSING CIRCUIT ALLOWS
CONTROL TO TURN ON MOTOR RELAY
ONLY WHEN DOOR IS CLOSED AND
START SWITCH PRESSED
BLK
BLK
SECOND COIL
COIN DROP
SENSOR
COIN VAULT
L
YE
1
RUN
3
CAP
AUX
THERM
PROT
MOTOR
*
MAIN 2
CABINET
HI-LIMIT
THERMOSTAT
BLK
STOVE
HI-LIMIT
THERMOSTAT
4
MAIN 1
I.E.I. = INSTANT ELECTRONIC IGNITION
M412010
AIR FLOW
SWITCH
RED
5
RUN
1
2
3
T242S
23
TUMBLER
Section 2 TROUBLESHOOTING
SAFETY CIRCUIT ANALYSIS
(#) NUMBERS NEXT TO VOLTAGE CHECKS
CORRESPOND TO THE LOCATIONS MARKED
ON THE WIRING SCHEMATIC.
GO TO THE REAR OF THE TUMBLER.
OPEN THE JUNCTION BOX.
IN CASE OF THE I.E.I.
CONTROL BOARD NOT
RECEIVING CONSISTENT
VOLTAGE TO "L1", GO
THROUGH THE
FOLLOWING CHECKS.
(1)
OPEN
(3)
AIR FLOW
SWITCH
OPERATE
BOX
(2)
CHECK
VOLTAGE
OPEN CONNECTOR
ON THE ORG WIRE AND CHECK
VOLTAGE FROM THE HI-LIMIT
CONDUIT TO GROUND,
IS THERE
VOLTAGE?
NO
REPLACE INOPERATIVE WIRING.
YES
CHECK
VOLTAGE ON THE
OTHER SIDE OF THE
CABINET HI-LIMIT
THERMOSTAT.
IS THERE
VOLTAGE?
NO
REPLACE CABINET
HI-LIMIT THERMOSTAT
YES
SWITCH AND CHECK
VOLTAGE
BLUE WIRE COMING OUT OF
THE AIR FLOW SWITCH
TO NEUTRAL,
IS THERE
VOLTAGE?
NO
REPLACE INOPERATIVE
AIR FLOW SWITCH.
OPEN
AIR FLOW
SWITCH
BOX
YES
(4)
CHECK
VOLTAGE
OPEN CONNECTOR
ON THE BLUE WIRE
CHECK
VOLTAGE TO NEUTRAL,
IS THERE
VOLTAGE?
YES
NO
REPLACE
INOPERATIVE STOVE
HI-LIMIT THERMOSTAT.
REPLACE INOPERATIVE
WIRING BETWEEN THE
STOVE HI-LIMIT AND
THE ELECTRONIC CONTROL.
T243S
24
M412010
TUMBLER
TROUBLESHOOTING Section 2
208V/60 HZ / IPH OR 240V/60 HZ / IPH
120V / 60 HZ / IPH
TB1
TB1 TB1
THERMISTOR
AVAILABLE OUTPUT
TRANSISTOR IS
"OFF" WHEN MACHINE
IS RUNNING
N
L2
MICROCOMPUTER CONTROL
IN USE
H6-1
H6-2
H3-1
WHT
L1
H3-3
H4-3
TEMPERATURE REGULATING CIRCUIT
CONTROLS HEAT RELAY
BLK
WHT
N
SPARK
IGNITER
H4-2
DOOR SWITCH
HEAT
RELAY
K2
H4-5
H4-4
FS-1
SERVICE
DOOR
BLK
WHT
GRN
FS-2
WHT
BLU
WHT
BLK
GAS VALVE
FIRST COIL
WHT
BLU
K1
V1 (VALVE)
MOTOR
RELAY
ORG
H2-1
H2-2
H2-3
H2-5
H2-6
H2-4
AUDIT CONTROL
CIRCUIT
G (BUR GRD)
H4-1
V2 (VRET)
BLK
L1 (HOT)
BLK
H4-6
L2 (RET)
I.E.I.* BOARD
DOOR SENSING CIRCUIT ALLOWS
CONTROL TO TURN ON MOTOR RELAY
ONLY WHEN DOOR IS CLOSED AND
START SWITCH PRESSED
BLK
BLK
SECOND COIL
COIN DROP
SENSOR
COIN VAULT
L
YE
1
RED
5
RUN
RUN
CAP
AUX
THERM
PROT
MOTOR
*
MAIN 2
CABINET
HI-LIMIT
THERMOSTAT
BLK
STOVE
HI-LIMIT
THERMOSTAT
4
MAIN 1
I.E.I. = INSTANT ELECTRONIC IGNITION
M412010
AIR FLOW
SWITCH
3
2
3
4
1
T244S
25