American Dryer Corp. MLS-460 - Manual (Page 79)

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G. PLC (Programmable Logic Controller) ERROR MESSAGES
The MLS-460 diagnostics messages have been provides to aid troubleshooters in diagnosing and repairing dryer
problems. The messages are intended to direct one to a particular fault area for further testing; not to diagnose
the machine for you.
NOTE: Not ALL MLS-460 dryer symptoms have faults messages.
The following information describes the action the MLS-460 will take while displaying a particular message.
* This message is generated by the operator terminal itself; it indicates that communication between the operator
terminal and PLC (Programmable Logic Controller) have discontinued.
E
RROR
M
ESSAGES
M LS-460 I
DLING
M LS-460 R
UNNING
CTRL VOLT OFF Cannot operate machine Stops dryer
INTAKE Cannot operate machine Stops dryer
EXHAUST DSFL Cannot operate machine Stops dryer
DOOR OPEN Cannot operate machine Stops dryer
SCREEN FAULT Cannot operate machine Stops dryer
MOTOR FAULT Cannot operate machine Stops dryer
GAS FAULT Not Applicable Burner Controller stops heat
AIR FAULT Not Applicable Burner Controller stops heat
HEATER FAULT Not Applicable Burner Controller stops heat
HI-TEMP FAULT Not Applicable Burner Controller stops heat
DRUM FAULT Not Applicable Burner Controller stops heat
LEVEL FAULT Cannot operate machine Stops dryer
LINE FAULTS* Cannot operate machine Cannot operate machine