Alliance Laundry Systems BU170S Service Manual download pdf (Page 63)

70422201R1

Hybrid Timer Control Troubleshooting

38.Error Codes

Display Definition Corrective Action

Open thermistor error. • Check thermistor. Replace if inoperative.

• Check wiring between control and

thermistor. Refer to wiring diagram for

proper wiring.

• Check control. Replace if inoperative.

Shorted thermistor error. • Check thermistor. Replace if inoperative.

• Check wiring between control and

thermistor. Refer to wiring diagram for

proper wiring.

• Check control. Replace if inoperative.

AF-1

Airflow switch closed when cycle started. • Check airflow switch. Replace if

inoperative.

AF-2

Airflow switch failed to closed after cycle

started.

• Check airflow switch. Replace if

inoperative.

AF (flashing)

Airflow switch opened/closed 5 or more

times in a running cycle.

• Check airflow switch. Replace if

inoperative.

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

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Alliance Laundry Systems BU170S Service Manual Page 63