Alliance Laundry Systems CA050L - Error Codes

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Micro Display Control (MDC) Troubleshooting
40.Error Codes
OP - Indicates physical “open” in the thermistor circuit. Possible causes are: 1) thermistor, 2) wiring between
control and thermistor, 3) control.
SH - Indicates a “short” in the thermistor circuit. Possible causes are: 1) shorted thermistor, 2) a short in the wiring
between control and thermistor, 3) control.
Card Reader Machines: (In addition to the above errors)
EC:19 - Indicates no card reader communication. The control and the reader cannot communicate. Check reader,
control and harness.
NOTE: For all other card reader errors, consult the card reader manual provided by the manufacturer.
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect electric power to the dryer(s) before servicing.
• Close gas shut-off valve to gas dryer(s) before servicing.
• Never start the dryer(s) with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the dryer is properly grounded.
W001R1
WARNING
Display Definition Corrective Action
OP
Indicates an open circuit in the thermistor.
 Check thermistor. Replace if inoperative.
 Check wiring between control and
thermistor. Refer to wiring diagram for
proper wiring.
 Check control. Replace if inoperative.
SH
Indicates a short circuit in the thermistor.
 Check thermistor. Replace if inoperative.
 Check wiring between control and
thermistor. Refer to wiring diagram for
proper wiring.
 Check control. Replace if inoperative.
EC:19
*Card Reader
models only
Indicates no communication between
control and card reader.
 Check card reader. Replace if inoperative.
 Check wire harness connecting card reader
and control. Replace if inoperative.
 Check control. Replace if inoperative.