14
TROUBLESHOOTING
Symptoms
The chart below is to assist in the troubleshooting of the griddle.
Refer to the Symptoms column to locate the type of failure then to the Possible Cause for the items to be
checked.
NOTICE:
Service on this, or any other, LANG appliance must be performed by
qualified personnel only. Consult your LANG authorized service agent
directory or call technical service at (314) 678-6315,
or www.langworld.com For the service agent nearest you.
120 VOLTAGES IS PRESENT INSIDE THIS APPLIANCE WHEN THE UNIT
IS PLUGGED/WIRED INTO A LIVE RECEPTACLE. BEFORE REPLACING
ANY PARTS, DISCONNECT THE UNIT FROM THE ELECTRIC POWER
SUPPLY.
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 WARRANTIES.
WARNING
CAUTION
Lang Envirozone Thermostat Gas Griddle Troubleshooting
Symptom
Possible Cause
Test
No sections spark
Griddle not plugged in
Check power cord connection
Switch power not connected
Check connection of switch on the front panel
No power at plug
Verify plug has power
One or more sections do
not spark
Main connector on pilot iginition
control not plugged in properly
Check all connections on pilot ignition control
Spark wire not connected to pilot
ignition controller or ignitor
Check spark wire (orange wire) connections
Pilot iginition control failed
Replace pilot ignition control
Ignitor sparks, but does
not light pilot tube
No gas to griddle
Check gas connection and shut off valve
Gas supply not purged of air
Try ignition sequence again
No gas to pilot tube
Check that pilot valve(s) are opened. Turn screw on valve
counter-clockwise
Check voltage across pilot solenoid valve, should be 120V
Ignitor is sparking away from electrode Check that ignitor is sparking across the electrodes
Pilot tube is lit, but burner
will not light
All pilot tube ports are not lit
Check that all ports on pilot tube are lit
Thermostat failed
Turn thermostat to max temp and check resistance across
thermostat
Gas valve failed
Apply 120V to valve and listen for solenoid actuation
Ignitor continues to spark
after pilot tube is lit
Electrode not sensing pilot flame
because flame is too small
Adust pilot flame by opening pilot valve. Turn screw on
valve counter-clockwise
Yellow or orange in pilot
flame
Primary air hole covered
Check air hole in pilot tube near inlet elbow for any
obstruction
Pilot flame too large
Adust pilot flame by closing pilot valve.
Turn screw on valve clockwise