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18
10. TROUBLESHOOTING CONT’D
9.2 TESTS
WARNING
SERVICE ON THIS, OR ANY OTHER, LANG APPLIANCE MUST BE
PERFORMED BY QUALIFIED PERSONNEL ONLY. CONSULT YOUR
AUTHORIZED SERVICE STATION DIRECTORY OR CALL THE FACTORY
AT 1-800-224-LANG (5264), OR WWW.LANGWORLD.COM FOR THE
SERVICE STATION NEAREST YOU.
BOTH HIGH AND LOW VOLTAGES ARE PRESENT INSIDE THIS
APPLIANCE WHEN THE POWER SWITCH IS ON OR OFF. THIS
APPLIANCE MUST BE REMOVED FROM ALL SOURCES OF POWER PRIOR
TO PERFORMING SERVICE ON THE APPLIANCE
POSSIBLE CAUSE
TEST
Product not being removed
when beeper sounds
•
No test available, operational condition
Computer program incorrect
•
Compare the computer program to that in the operations manual
Failed Computer
•
Switch the to the manual back up system. If the motor starts and the
oven heats up, the computer has failed
Failed control panel circuit
board
•
Switch the to the manual back up system. If the motor starts and the
oven heats up, the computer has failed
Failed element
•
Remove the wires from the element terminals and check for
continuity across the element
Failed element contactor
•
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
•
Check for 24 volts at the contactor coil when the computer is running
Failed heat contactor
•
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
•
Check for 24 volts at the contactor coil when the computer is running
Failed LED on control panel
circuit board
•
Press the button, if the beeper sound and the program runs the LED
has failed.
Failed or disconnected safety
thermostat
•
Check across the thermostat connectors for continuity
Failed oven temperature sensor
•
Unplug the sensor from the control panel circuit board and check for
continuity