Alliance Laundry Systems BU170S Service Manual Page 93
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- Table of contents
- TROUBLESHOOTING
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70422201R1
91
LED OPL and UniLinc Troubleshooting
51.Moisture Sensor Error
UniLinc Error Display: Moisture Sensor Error
LED OPL Error Display: EnoiST
NOTE: Before troubleshooting the Moisture Sensor Error, run the Moisture Sensor Tests found in Table 5.
After disconnecting the
H5 connector, is there
any resistance into
the wire harness?
After disconnecting
2-wire slip ring harness
located at rear of trunnion shaft,
is there any resistance
into slip ring
harness?
If less than 2 ohms,
verify correct dipswitch
settings and perform
diagnostic test cycle.
Repair or replace
wiring harness
between control
and slip rings.
Repair or replace
wiring harness
between control and
slip rings.
Yes
Yes Yes
No
No
Verify connections on
both ends of slip
ring assembly.
Replace as required.
No
No
No
Yes
TMB2381S
After disconnecting the
2-wire slip ring harness located
at rear of trunnion shaft, is
there resistance into the
slip ring harness?
Yes
After removing
3 screws from slip ring
assembly, is there any resistance
at bullet connector to
trunnion shaft?
(1)
(2)
(5)
(6)
(3)
After removing
3 screws from slip ring
assembly, is there any resistance
at bullet connector to
trunnion shaft?
Yes
Verify connections on
both ends of slip
ring assembly.
Replace as required.
Remove basket
and repair or
replace wiring harness.
(4)
No
NOTE: Before troubleshooting the Moisture Sensor Error. run the Moisture Sensor Tests found in Table 5.
NOTE: All testing must be done with an empty basket. Use the orange test jumper from Part No. 70468901 to
assist in troubleshooting.
NOTE: Test procedures should be verified on each insulated baffle independently.
NOTE: Loose or cut wires can cause intermittent shorts or opens. If this condition is suspected, a close
inspection of the wiring harnesses is required. Remove the basket for a proper wire harness inspection.
After creating a
direct short with orange
test jumper between basket
and insulated baffle,
is there any
ressistance?
Remove basket and
look for short
between basket and
each insulated baffle.
Repair or replace
wiring harness
as necessary.
TMB2381S
- STRIAL TUMBLE DRYERS 1
- Table of 3
- Contents 3
- 70422101R1 4
- Section 1 5
- Safety Information 5
- Safety Warnings and Decals 7
- Tumblers 7
- Section 2 8
- Introduction 8
- Customer Service 10
- Serial Plate Location 10
- How a Tumble Dryer Works 11
- Operation 12
- Temperature Sensor 13
- Modes of Operation 14
- Section 3 15
- Troubleshooting 15
- 1. Motor Does Not Start 16
- 4. Motor Does Not Stop 19
- 6. No Heat Condition 21
- 7. Gas Burner Does Not Ignite 22
- 12.Clothes Do Not Dry 27
- 13.Tumble Dryer Overheating 28
- TMB2357S 34
- TMB2319S 35
- TMB2368S 36
- 21.Cylinder Is “Stained” 39
- Section 4 40
- Call the fire department 41
- TMB2199N 44
- SUPPRESSION 45
- Section 5 46
- Adjustments 46
- 27.Airflow Switch 47
- Pound Models) 47
- 30.Belt Drive 48
- 31.Cylinder Clearance 49
- TMB1786S 50
- 32.Drive Belt Tension 51
- 33.Fan Belt Tension 52
- Section 6 53
- 34.Control Has No Display 54
- 36.Motor Will Not Start/Run 58
- 37.Unit Will Not Heat – Gas 60
- 38.Error Codes 63
- Section 7 64
- 39.Control Has No Display 65
- 40.Door Open Indicator 67
- 41.Motor Will Not Start/Run 70
- 43.Error Codes 75
- Section 8 76
- Is there line voltage 77
- TMB2387S 79
- 45.No Drive Motor Rotation 80
- LED OPL Error Display: E Cab 83
- Is there 24 volts AC 85
- 48.Airflow Errors 87
- LED OPL Error Display: E FnCs 89
- 50.Close Door Indication 91
- 51.Moisture Sensor Error 93
- Figure 9 95
- Figure 10 96
- (Refer to Figure 11) 97
- Figure 12 98
- Machine Basket Removed 99
- Figure 13 100
- 58.Fan Motor Contactor Error 101
- TMB2383S 102
- 59.Rotation Sensor Error 103
- Rotation Sensor Error 104
- 60.Shorted or Open Thermistor 105
- Shorted or Open Thermistor 106
- SEE VOLTAGE 107
- OPTION DIAGRAM 107
- PROGRAMMING DIP SWITCHES 108
- (SEE INSTALLATION MANUAL 108
- FOR SWITCH DETAILS.) 108
- 63.Electronic Control Testing 109
- 70422201R1 110
- Diagnostic Test Descriptions 111
- Production Test Cycle 116
- 64.Diagnostic Testing 117
- Diagnostic Menu 117
- Test Menu 117
- Test Cycle Chart 118
- Inputs Outputs Menu 119
- Alarms Menus 120
- Machine ID Menu 120
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