Alliance Laundry Systems CHD25G2 Operating instructions

www.comlaundry.com
Troubleshooting
Part No. 70380601R3
September 2009
Drying Tumblers
25 Pound Capacity
30 Pound Capacity
35 Pound Capacity
55 Pound Capacity
Starting Serial No. 0602004144
Refer to Page 7 for Model Numbers
START
25
C
HIGH
TEMP
MED
TEMP
LOW
TEMP
NO
HEAT
123
SELECT
TEMP
INSERT
COIN
PUSH
START

© Copyright 2009, 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.
70380601 1
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Table of
Contents
Section 1 – Safety Information .......................................................... 4
Locating an Authorized Service Person ............................................... 6
Safety Warnings and Decals................................................................. 6
Safety Precautions for Servicing Tumblers.......................................... 6
Section 2 – Introduction..................................................................... 7
Model Identification ............................................................................. 7
Serial Plate Location............................................................................. 9
Customer Service.................................................................................. 9
Wiring Diagram.................................................................................... 9
How a Tumbler Works ......................................................................... 10
Section 3 – Troubleshooting............................................................... 11
1. Tumbler Does Not Start........................................................... 12
2. Motor Does Not Start............................................................... 13
3. Motor Overload Protector Cycles Repeatedly......................... 14
4. Motor Runs But Cylinder Does Not Turn................................ 15
5. Motor Does Not Stop............................................................... 16
6. Burner Does Not Ignite............................................................ 17
7. Burner Ignites and Goes Out Repeatedly................................. 20
8. Burner Does Not Shut Off ....................................................... 21
9. Clothes Do Not Dry ................................................................. 22
10. Tumbler Overheating............................................................... 24
11. Burner Not Burning Properly................................................... 25
12. Loading Door Opens During Operation................................... 26
13. Cylinder Continues to Spin with Door Open........................... 27
14. Coin Does Not Fall into Coin Vault or Coin Drop Sensor Does Not
Register that Coin Has Been Entered28
Section 4 – Adjustments..................................................................... 29
15. Loading Door Switch............................................................... 29
16. Loading Door Strike................................................................. 29
Section 5 – Micro Display Control (MDC) Troubleshooting.......... 30
Models with BC, BL, BX and BY Control Suffixes
17. Coins Ignored When Entered................................................... 30
18. Control Has No Display........................................................... 31
19. Door Open Indicator ................................................................ 33
20. Motor Will Not Start/Run........................................................ 35
21. Unit Will Not Heat – Gas......................................................... 39
22. Unit Will Not Heat – Steam..................................................... 42
23. Unit Will Not Heat – Electric .................................................. 45
24. Error Codes.............................................................................. 48
Gas and Steam Models
Control Circuit Schematic.................................................................49
Control Circuit Connection...............................................................50
Gas and Steam Models
Control Box Schematic.....................................................................51
Control Box Connection ...................................................................52

270380601
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Gas and Steam Models
Control Circuit Schematic.................................................................53
Gas and Steam Models
Control Circuit Schematic.................................................................54
Gas and Steam Models
Control Box Schematic.....................................................................55
Control Box Connection ...................................................................56
Electric Models
Control Circuit Schematic.................................................................57
Control Circuit Connection...............................................................58
Electric Models
Control Box Connection ...................................................................59
Control Box Schematic.....................................................................60
Section 6 – NetMaster Troubleshooting ........................................... 61
Models with NC, NR, NX, NY, ZC, ZR, ZX and ZY
Control Suffixes
25. No Infra-red (IR) Communication........................................... 61
26. Coins Ignored When Entered................................................... 62
27. Control Has No Display........................................................... 63
28. Door Open Indicator ................................................................ 65
29. Motor Will Not Start/Run........................................................ 67
30. Unit Will Not Heat – Gas......................................................... 71
31. Unit Will Not Heat – Steam..................................................... 74
Section 7 – Hybrid Timer Control Troubleshooting....................... 76
Models with QT, SD and SX Control Suffixes
32. Coins Ignored When Entered................................................... 76
33. Control Has No Display – OPL Models .................................. 77
34. Display Flashes “dr” With Door Closed – OPL Models ......... 80
35. Vend Satisfied, No In Use LED – Coin Models...................... 83
36. In Use LED Lit, No Motor Run – Coin Models...................... 87
37. Motor Will Not Start/Run – Coin Models ............................... 90
38. Motor Will Not Start/Run – OPL Models................................ 93
39. Unit Will Not Heat – Gas – Coin Models................................ 96
40. Unit Will Not Heat – Gas – OPL Models................................ 99
41. Unit Will Not Heat – Electric OPL.......................................... 102
42. Error Codes.............................................................................. 106
Section 8 – On Premise Micro Control Troubleshooting................ 107
Models with OM Control Suffix
43. Control Has No Display........................................................... 108
44. Door Open Indicator ................................................................ 110
45. Motor Will Not Start/Run........................................................ 113
46. Unit Will Not Heat – Gas......................................................... 116
47. Unit Will Not Heat – Steam..................................................... 119
48. Unit Will Not Heat – Electric .................................................. 122
49. Error Codes.............................................................................. 125

70380601 3
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Section 9 – Quantum Control Troubleshooting............................... 126
Models with LC, LX, LY, WC, WX and WY Control Suffixes
50. No Infrared Communication.................................................... 127
51. Coins Ignored When Entered................................................... 128
52. No Display ............................................................................... 129
53. “Door Open” Indicator............................................................. 131
54. No Start/Run ............................................................................ 133
55. Unit Will Not Heat – Gas......................................................... 135
56. Unit Will Not Heat – Steam..................................................... 138
57. Unit Will Not Heat – Electric .................................................. 140
58. CE Models No Display............................................................ 143
59. CE Models “Door Open” Indicator.......................................... 145
60. CE Models No Start/Run ......................................................... 147
61. CE Models Will Not Heat – Gas/Steam................................... 149
62. CE Models Will Not Heat – Electric ....................................... 152

470380601
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Section 1
Safety Information
Throughout this manual and on machine decals, you
will find precautionary statements (“CAUTION”,
“WARNING”, and “DANGER”) followed by specific
instructions. These precautions are intended for the
personalsafety oftheoperator, user, servicer,and those
maintaining the machine.
Additional precautionary statements (“IMPORTANT”
and “NOTE”) are followed by specific instructions.
IMPORTANT: The word “IMPORTANT” is used
to inform the reader of specific procedures where
minor machine damage will occur if the procedure
is not followed.
NOTE: The word “NOTE” is used to communicate
installation, operation, maintenance or servicing
information that is important but not hazard
related.
In the interest of safety, some general precautions
relating to the operation of this machine follow.
Danger indicates an imminently hazardous
situation that, if not avoided, will cause
severe personal injury or death.
DANGER
Warning indicates a hazardous situation
that, if not avoided, could cause severe
personal injury or death.
WARNING
Caution indicates a hazardous situation
that, if not avoided, may cause minor or
moderate personal injury or property
damage.
CAUTION
• Failure to install, maintain and/or operate
this product according to the
manufacturer’s instructions may result in
conditions which can produce serious
injury, death and/or property damage.
• Do not repair or replace any part of the
product or attempt any servicing unless
specifically recommended or published
in this Service Manual and unless you
understand and have the skills to carry
out the servicing.
• Whenever ground wires are removed
during servicing, these ground wires
must be reconnected to ensure that the
product is properly grounded and to
reduce the risk of fire, electric shock,
serious injury or death. W006R2
WARNING

70380601 5
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Safety Information
IMPORTANT INFORMATION: During the
lifetime of a tumbler, it may require service. The
information contained in this manual was written
and is intended for use by qualified service
technicians who are familiar with the safety
procedures required in the repair of a tumbler, and
who are equipped with the proper tools and testing
equipment.
NOTE: The WARNING and IMPORTANT
instructionsappearinginthis manualarenot 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.
Always contact your dealer, distributor, service agent
or the manufacturer on any problems or conditions you
do not understand.
To reduce the risk of electric shock, fire,
explosion, serious injury or death:
• Disconnect electric power to the tumbler
before servicing.
• Never start the tumbler with any guards/
panels removed.
• Whenever ground wires are removed
during servicing, these ground wires
must be reconnected to ensure that the
tumbler is properly grounded. W240
WARNING
Repairs that are made to your products by
unqualified persons can result in hazards
due to improper assembly or adjustments
subjecting you, or the inexperienced
person making such repairs, to the risk of
serious injury, electrical shock, or death.W007
WARNING
If you or an unqualified person perform
service on your product, you must assume
the responsibility for any personal injury or
property damage which may result. The
manufacturer will not be responsible for
any injury or property damage arising from
improper service and/or service
procedures. W008
CAUTION

670380601
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Safety Information
Locating an Authorized Service
Person
Alliance Laundry Systems is not responsible for
personal injury or property damage resulting from
improper service. Review all service information
before beginning repairs.
Warranty service must be performed by an
authorized technician, using authorized factory
parts. If service is required after the warranty
expires, Alliance Laundry Systems also
recommends contacting an authorized technician
and using authorized factory parts.
Safety Warnings and Decals
SAFETY WARNINGS and decals have been provided
inkey locations toremindyou ofimportant precautions
forthe safe operation and maintenance ofyour tumbler.
Please take the time to review these warnings before
proceeding with service work.
All decals have been designed and applied to withstand
washing and cleaning. Decals should be checked
periodically to be sure they have not been damaged,
removed, or painted.
Safety Precautions for Servicing
Tumblers
Prior to servicing tumbler:
•Disconnect electrical service and “lockout” to
prevent unintentional connection.
•Shut off supply gas valve.
•Allow machine to cool prior to servicing.
After servicing tumbler:
•Control/access panels must be reinstalled.
•Motor/drive/belt guards must be reinstalled.
•Contactor/junction/accessory box covers must
be reinstalled.
•Use a non-corrosive leak detection solution to
check all pipe connections for gas leaks. DO
NOT USE AN OPEN FLAME TO CHECK
FOR GAS LEAKS!
•The loading door switch, lint door switch and
airflow switch must be operating properly.

70380601 7
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Section 2
Introduction
Model Identification
Information in this manual is applicable to these models:
Gas Steam Electric
25
Pound
CHD25G2-CA025L
CHD25G2-CA025N
CHD25G2-CT025L
CHD25G2-CT025N
CHD25G2-CU025L
CHD25G2-CU025N
DR25G2-BA025L
DR25G2-BA025N
DR25G2-BT025L
DR25G2-BT025N
DR25G2-BU025L
DR25G2-BU025N
GA025L
GA025N
GT025L
GT025N
GU025L
GU025N
HA025L
HA025N
HT025L
HT025N
HU025L
HU025N
IPD25G2-IT025L
IPD25G2-IT025N
KA025L
KA025N
KT025L
KT025N
KU025L
KU025N
LA025L
LA025N
LT025L
LT025N
LU025L
LU025N
PA025L
PA025N
PT025L
PT025N
PU025L
PU025N
SA025L
SA025N
ST025L
ST025N
SU025L
SU025N
UA025L
UA025N
UT025L
UT025N
UU025L
UU025N
YT025L
YT025N
CHD25S2-CT025S
CHD25S2-CU025S
DR25S2-BT025S
DR25S2-BU025S
GT025S
GU025S
HT025S
HU025S
IPD25S2-IT025S
KT025S
KU025S
LT025S
LU025S
PT025S
PU025S
ST025S
SU025S
UT025S
UU025S
YT025S
CHD25E2-CT025E
CHD25E2-CU025E
DR25E2-BT025E
DR25E2-BU025E
GT025E
GU025E
HT025E
HU025E
IPD25E2-IT025E
KT025E
KU025E
LT025E
LU025E
PT025E
PU025E
ST025E
SU025E
UT025E
UU025E
YT025E
30
Pound
CHD30G2-CA030L
CHD30G2-CA030N
CHD30G2-CT030L
CHD30G2-CT030N
CHD30G2-CU030L
CHD30G2-CU030N
DR30G2-BA030L
DR30G2-BA030N
DR30G2-BT030D
DR30G2-BT030L
DR30G2-BT030N
DR30G2-BU030L
DR30G2-BU030N
GA030L
GA030N
GT030L
GT030N
GU030L
GU030N
HA030L
HA030N
HT030D
HT030L
HT030N
HU030L
HU030N
IPD30G2-IT030L
IPD30G2-IT030N
KT030L
KT030N
LA030L
LA030N
LT030L
LT030N
LU030L
LU030N
PA030L
PA030N
PT030L
PT030N
PU030L
PU030N
SA030L
SA030N
ST030D
ST030L
ST030N
SU030L
SU030N
UA030L
UA030N
UT030L
UT030N
UU030L
UU030N
YT030L
YT030N
CHD30S2-CT030S
CHD30S2-CU030S
DR30S2-BT030S
DR30S2-BU030S
GT030S
GU030S
HT030S
HU030S
IPD30S2-IT030S
KT030S
LT030S
LU030S
PT030S
PU030S
ST030S
SU030S
UT030S
UU030S
YT030S
CHD30E2-CT030E
CHD30E2-CU030E
DR30E2-BT030E
DR30E2-BU030E
GT030E
GU030E
HT030E
HU030E
IPD30E2-IT030E
KT030E
LT030E
LU030E
PT030E
PU030E
ST030E
SU030E
UT030E
UU030E
YT030E
Models continued on next page.

870380601
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Introduction
Includes models with the following control suffixes:
35
Pound
AT035L
AT035N
CHD35G2-CA035L
CHD35G2-CA035N
CHD35G2-CT035L
CHD35G2-CT035N
CHD35G2-CU035L
CHD35G2-CU035N
DR35G2-BA035L
DR35G2-BA035N
DR35G2-BT035L
DR35G2-BT035N
DR35G2-BU035L
DR35G2-BU035N
GA035L
GA035N
GT035L
GT035N
GU035L
GU035N
HA035L
HA035N
HT035L
HT035N
HU035L
HU035N
IPD35G2-IT035L
IPD35G2-IT035N
KA035L
KA035N
KT035L
KT035N
KU035L
KU035N
LA035L
LA035N
LT035L
LT035N
LU035L
LU035N
PA035L
PA035N
PT035L
PT035N
PU035L
PU035N
SA035L
SA035N
ST035L
ST035N
SU035L
SU035N
UA035L
UA035N
UT035L
UT035N
UU035L
UU035N
YT035L
YT035N
AT035S
CHD35S2-CT035S
CHD35S2-CU035S
DR35S2-BT035S
DR35S2-BU035S
GT035S
GU035S
HT035S
HU035S
IPD35S2-IT035S
KT035S
KU035S
LT035S
LU035S
PT035S
PU035S
ST035S
SU035S
UT035S
UU035S
YT035S
YU035S
AT035E
CHD35E2-CT035E
CHD35E2-CU035E
DR35E2-BT035E
DR35E2-BU035E
GT035E
GU035E
HT035E
HU035E
IPD35E2-IT035E
KT035E
KU035E
LT035E
LU035E
PT035E
PU035E
ST035E
SU035E
UT035E
UU035E
YT035E
YU035E
55
Pound
CA055L
CA055N
CT055L
CT055N
CU055L
CU055N
GT055L
GT055N
HA055L
HA055N
HT055D
HT055L
HT055N
HU055L
HU055N
IPD55G2-IT055L
IPD55G2-IT055N
KT055L
KT055N
SA055L
SA055N
ST055D
ST055L
ST055N
SU055L
SU055N
UA055L
UA055N
UT055L
UT055N
UU055L
UU055N
Not
Applicable
CT055E
CU055E
GT055E
HT055E
HU055E
IPD55E2-IT055E
KT055E
ST055E
SU055E
UT055E
UU055E
3O – DX4 OPL LC – network adaptable coin SX – single drop, prep for coin
3V – DX4 vended LX – network adaptable, prep for coin WC – network ready coin
3X – DX4 prep for coin LY – network adaptable, prep for card WX – network ready, prep for coin
BC – basic electronic, coin NC – NetMaster coin WY – network ready, prep for card
BL – basic electronic, central pay NR – NetMaster card ZC – NetMaster network coin
BX – basic electronic, prep for coin NX – NetMaster, prep for coin ZR – NetMaster network card
BY – basic electronic, prep for card NY – NetMaster, prep for card ZX – NetMaster network, prep for coin
DO – DMP OPL OM – OPL micro ZY – NetMaster network, prep for card
DV – DMP vended QT – dual digital timer
DX – DMP prep for coin SD – single drop
Gas Steam Electric

70380601 9
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Introduction
Serial Plate Location
When calling or writing about your product, be sure to
mention model and serial numbers. Model and serial
numbers are located on serial plate as shown.
Customer Service
If literature or replacement parts are required, contact
the source from which the machine was purchased or
contact Alliance Laundry Systems at [phone]
for the name and address of thenearest authorized parts
distributor.
For technical assistance, call [phone].
Wiring Diagram
The wiring diagram is located inside the contactor or
junction box.
The wiring diagram part number is located in the lower
portion of the electrical data on the serial plate.
TMB2098N
1Serial Plate
1

10 70380601
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Introduction
How a Tumbler Works A tumbler uses heated air to dry loads of laundry.
When the motor is started, the exhaust fan pulls
room temperature air in through the air intake at
the rear of the tumbler and over the heat source
(burner flame for gas, heating element for
electric, and coil for steam).
The heated air moves into the cylinder, where it is
circulated through the wet load by the tumbling
action of the cylinder.
The air then passes through the lint filter, exhaust
fan, and is vented to the outdoors.
1
2
3
T001CE3A
1
2
3

70380601 11
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Section 3
Troubleshooting
IMPORTANT: Refer to wiring diagram for aid in
testing tumbler components.
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect electric power to the tumbler before servicing.
• Close gas shut-off valve to gas tumbler before servicing.
• Close steam valve to steam tumbler before servicing.
• Never start the tumbler with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the tumbler is properly grounded. W002
WARNING

12 70380601
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Troubleshooting
1. Tumbler Does Not Start
Tumbler Does
Not Start
Is motor
relay
inoperative?
Test relay and
replace if
necessary.
Yes
Is
loading door
open?
No
Close loading
door
completely.
Is
drying timer in
an off position
(Hybrid Timer
Models)?
Yes Turn drying
timer on.
Check that
proper amount
of coins are
inserted.
Is the
START button
not properly
activated
(Hybrid Timer
Models)?
Press and
hold
START button
for three
seconds.
Is the
electrical power
off or circuit
breaker or fuse
blown?
Close and
lock lint
panel.
Check fuse
(in junction box)
and replace if
necessary.
Is there a
blown fuse
on tumbler?
Test coin drop
and replace if
inoperative.
Yes
Is coin drop
inoperative?
Is there an
incorrect
amount of coins
inserted into
coin drop?
No
No
Yes
No
Yes
Check power
supply, or
replace fuses.
No
Is the lint
panel
open?
No
Yes
No
Yes
Yes
TMB2036S
Yes
No

70380601 13
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Troubleshooting
2. Motor Does Not Start
Motor Does
Not Start
Is the
electrical power
off or circuit
breaker fuse
blown?
No
Is the
loading door
switch or lint
panel switch not
closed or switch
inoperative?
Is the
door switch
improperly
adjusted?
No
Check power
supply, or replace
fuses.
Yes
Close door, panel
or test switch and
replace if
inoperative.
Yes
Refer to
Adjustments
Section for door
switch adjustment.
Yes
Is the start
circuit not
complete?
Yes Press and hold
START button for
three seconds.
Is the motor
inoperative?
Yes Have motor tested
and replace if
inoperative.
No
Is the
cylinder or
cylinder motor
binding?
No
Refer to wiring
diagram.
Yes
Replace fan or
motor assembly.
Yes
Replace cylinder,
bearing, rollers, or
motor assembly.
Yes
Is the
transformer
inoperative?
Yes Test and replace
if necessary.
Is the
motor relay
inoperative?
Yes Test relay and replace
if inoperative.
Is
the fan or fan
motor
binding?
Is there
broken, loose,
or incorrect
wiring?
No
No
No
Is the
airflow switch
inoperative
(Hyrid Timer
Models)?
Yes Test switch,
replace or adjust
as required.
No
TMB2037S
No
No

14 70380601
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Troubleshooting
3. Motor Overload Protector Cycles Repeatedly
TMB1904S
Motor Overload
Protector
Cycles
Repeatedly
Is voltage
correct?
Refer to
Installation
Manual for
electrical
requirements.
Yes
Is clothes
load too
large?
No
Remove part of
load.
Yes
Is clothes
cylinder
binding?
Check cylinder
for binding.
Is wiring
adequate?
No
Yes
No
Check with
local power
company to
ensure that
wiring is
adequate.
Yes
Is make-up
air adequate?
Refer to
Installation
Manual for
make-up air
requirements.
No
Yes
Is there lint
buildup around
tumbler or poor
maintenance?
Clean lint
accumulation
on and around
the motors.
No
Yes
Is there
broken, loose
or incorrect
wiring?
Refer to wiring
diagram.
No
Yes

70380601 15
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Troubleshooting
4. Motor Runs But Cylinder Does Not Turn
Motor Runs
But Cylinder
Does Not Turn
Is cylinder
belt
broken?
Replace
cylinder belt.
Is cylinder
binding?
Check cylinder
for binding.
Yes
No
Yes
TMB1905S

16 70380601
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Troubleshooting
5. Motor Does Not Stop
Motor Does
Not Stop
Is the door
switch or lint
panel switch
not working
properly?
Test switches
and replace if
inoperative.
Is coin drop
not working
properly?
Test coin drop
and replace if
inoperative.
Is wiring
incorrect?
Refer to wiring
diagram.
Is electronic
control
inoperative?
Replace
electronic
control.
Is motor
relay
inoperative?
Test relay and
replace if
inoperative.
Yes
No
Yes
No
Yes
No
Yes
No
Yes
TMB2038S

70380601 17
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Troubleshooting
6. Burner Does Not Ignite
Burner Does
Not Ignite
Is there
an improper or
inadequate exhaust
system?
No
Are there
blown fuses or
tripped circuit breakers
in external electric
supply line?
Is
drying
selector in the
“Cool Down”
portion of
cycle?
No
Refer to
Installation
Manual for
exhaust system
requirements.
Yes
Check fuses or
circuit breaker.
Yes
Reset switch on
microprocessor.
Yes
Is
the cabinet
thermostat
inoperative?
Yes Test thermostat
and replace if
inoperative.
Is
there an
insufficient gas
supply?
Yes
Open partially closed
gas shut-off valve, or
correct low gas
pressure. Check
manifold pressure
and adjust to
pressure specified on
serial plate. If
pressure cannot be
obtained, have your
local gas company
check main gas
pressure.
No
Is there
inadequate
ductwork and
make-up
air?
No
Tumbler is equipped
for type of gas
specified on serial
plate. If orifices are
different from that
specified on serial
plate, obtain and
install correct orifices.
Yes
Clean lint
compartment. Check
damper for lint
accumulation. Check
ductwork for lint
buildup.
Yes
Refer to Installation
Manual to ensure
that ductwork and
make-up air
openings are sized
accurately.
Yes
Is there
lint
buildup?
Are the
orifices
incorrect?
TMB2187S-a
No
Continued on
next page
Is
stove limit
thermostat 1
inoperative?
Test thermostat 1
and replace if
inoperative.
No
Yes
Is
stove limit
thermostat 2
inoperative?
Test thermostat 2
and replace if
inoperative.
No
No
No
No
Yes

18 70380601
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Troubleshooting
6. Burner Does Not Ignite (continued)
Continued from
previous page
Is
there an
improper igniter
to burner
clearance?
Are valve coils
inoperative?
No
Clearance
should be
0.110 - 0.140
inch (2.79 - 3.55
mm).
Yes
Check valve
coils and
replace if
necessary.
Yes
Is
there a blown
fuse on
tumbler?
Yes
Check fuse
(located in
control box)
and replace if
necessary.
Is
gas shut-off
valve in the
closed
position?
Yes Open shut-
off valve.
Is
motor switch
inoperative?
No
Replace IEI
control.
Yes
Replace motor.
Yes
Is the
IEI control
inoperative?
TMB2187S-b
Yes Connect
ground wire
to ground
terminal.
Is the
ground wire
from Instant
Electronic Ignition
(IEI) board not
connected to
ground
terminal?
No
Is
there broken,
loose or incorrect
wiring?
Yes Refer
to wiring
diagram.
Is the lint
panel not
closed
properly?
Yes
Unlock and open
lint panel. Close
panel ensuring a
tight fit, then lock.
Is the
airflow switch
inoperative?
Test switch
and replace
if inoperative.
Yes
No
No
No
No
No
No
Continued on
next page
No