Lang ECOD-PT Installation And Operation Instructions Manual page 20

TROUBLESHOOTING
Symptoms & Possible Causes
The following are charts of Symptoms and Possible Causes to aid in diagnosing faults with your unit.
Refer to the symptoms column to locate the type of failure then to the Possible Cause for the items to be checked.
To test for a possible cause refer to test to identify test procedures. Test indicated with an "*" should be done by a
Lang factory authorized service representative.
Symptom
No power to cord outlet
Oven unplugged from outlet
Display will not come on Failed power cord or plug
Contrast needs to be adjusted
Failed display board
Power Switch is not "ON"
Product not selected
Failed Transformer
Failed Probe
Oven will not heat
Failed Circuit board
Failed Contactor
Failed Over-temperature Thermostat
Failed Element
Power Switch is not "ON"
Product not selected
Failed Transformer
Oven motor will not run
Failed Contactor
Failed Motor
Failed output on circuit board.
Product is cooked too long
Product burning Failed Probe
Failed Circuit board
Product is not cooking long enough
Product under done Failed Probe
Failed Circuit board
NOTICE If an item on the list is followed by an asterisk (*), the work should be done by
a Lang factory authorized service representative.
USE OF ANY REPLACEMENT PARTS OTHER THAN THOSE SUPPLIED BY
LANG OR THEIR AUTHORIZED DISTRIBUTORS CAN CAUSE BODILY INJURY
TO THE OPERATOR AND DAMAGE TO THE EQUIPMENT AND WILL VOID ALL
CAUTION
WARRANTIES.
NOTICE Service on this or any other Lang appliance must be performed by qualified
personnel only. Consult your Lang Authorized Service Agent Directory. You
can call our tech service number (314) 678-6315 or visit our website
Www.langworld.com for the service agent nearest you.
BOTH HIGH AND LOW VOLTAGES ARE PRESENT INSIDE THIS APPLIANCE
WHEN THE UNIT IS PLUGGED/WIRED INTO A LIVE RECEPTACLE. BEFORE
REPLACING ANY PARTS, DISCONNECT THE UNIT FROM THE ELECTRIC
WARNING
POWER SUPPLY.
Possible Cause Possible Cause
Product is cooked too long
Failed Probe
Failed Circuit board
Failed Transformer
Failed Contactor
Failed Motor
Failed or disconnected
safety thermostat
Failed Element
0
Test
No test available, operational condition
Check probe for proper resistance*
Confirm that Circuit board is getting
correct voltage and putting out correct
voltage*
Check both Primary and Secondary
coils for correct voltage*
Remove the wires from the contactor
coil and check for continuity across the
contactor coil connection*
Ensure the contactor moveable points
move freely up and down*
Confirm that motor is getting correct
voltage*
Check across the thermostat
connectors for continuity*
Confirm that Elements are getting
correct voltage and have continuity*