American Dryer Corp ML-79 manual Section

Models: ML-79

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SECTION VII

TROUBLESHOOTING

IMPORTANT: YOU MUST DISCONNECT AND LOCKOUT THE ELECTRIC SUPPLY AND THE GAS SUPPLY BEFORE ANY COVERS OR GUARDS ARE REMOVED FROM THE MACHINE TO ALLOW ACCESS FOR CLEANING, ADJUSTING, INSTALLATION, OR TESTING OF ANY EQUIPMENT PER OSHA (Occupational Safety Health Administration) STANDARDS.

The information provided will help isolate the most probable components associated with the difficulty described. The experienced technician realizes, however, that a loose connection, or broken or shorted wire may be at fault where electrical components are concerned, not necessarily the suspect component itself. Electrical parts should be checked for failure before being returned to the factory.

IMPORTANT: When replacing blown fuses, the replacement must be of the exact rating as the fuse being replaced. The information provided should not be misconstrued as a handbook for use by a untrained person in making repairs.

WARNING:ALL SERVICE AND TROUBLESHOOTING SHOULD BE PERFORMED BY A QUALIFIED PROFESSIONAL OR SERVICE AGENCY.

WARNING: WHILE MAKING REPAIRS, OBSERVE ALL SAFETY PRECAUTIONS DISPLAYED ON THE DRYER OR SPECIFIED IN THIS MANUAL.

TABLE OF CONTENTS

MICROPROCESSOR (COMPUTER) MODELS

ITEM

PAGE

 

No L.E.D. Display

A

35

Drive motor does not operate

B, C

35

Microprocessor controller display reads “dFSL”

D

35

Mircoprocessor controller display reads “door”

E, F

35

Microprocessor controller will not accept any keyboard entries and display

G

36

reads “FILL”

 

 

Microprocessor controller will only accept certain keyboard entries

H

36

Microprocessor controller Locks up

I

36

Dryer stops during a cycle

J,K

36

Display reads “Hot”

L

36

Heat unit is not operating, no voltage at heating unit when dryer is first

M, N, 0

36, 37

started and both the heat indicator dot and the “HEAT” output are on.

 

 

Dryer is taking too long to dry

P

38, 39

At completion of “AUTO”

Q, R

39

Main burners are burning with a yellow flame

S

39

Condensation on main door glass

T

39

Scraping noise at basket area

U

39

Excessive noise or vibration

V

39

34

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American Dryer Corp ML-79 manual Section