Error Messages/Troubleshooting - Garland MWE2W Installation, Operation & Service Manual

GARLAND CLAMSHELL GRILLS WITH PRODUCT RECOGNITION

ERROR MESSAGES/TROUBLESHOOTING

DISPLAYED
MEANING
MESSAGE
GRILL PROBE Error for grill temperature
ERROR
PLATEN PROBE Error for platen
ERROR temperature sensor
Too low or too high
ERROR AMBIENT temperature at the
controller
ERROR COLD
EEPROM response issue
START
CHECK REED
Platen failed to calibrate,
SWITCH
can cook in fl at mode
USE FLAT COOK
CHK PLATEN Warning that platen level
LEVEL needs checked
PLATEN NOT
Platen not level
LEVEL
Platen fails to move down
ERROR DOWN or is not moving within
40 seconds
Platen fails to move up or
ERROR UP is not moving within 40
seconds
Communication problem
ERROR COMMS between motor control
and main controller
IGNITION Burner fl ame not
FAILURE detected
Platen or grill platen
HIGH TEMP
temperature is higher
PLATEN/GRILL
than 465 deg F
PART #4527466 (12 Aug 2011)
POSSIBLE CAUSES
Wrong sensor type
Controller not setup for gas OR electric
sensor Open or damaged sensor
Sensor is set below or above the
controller operating range
Wrong sensor type
Controller not setup for gas OR electric
Open or damaged sensor
Sensor is set below or above the
controller operating range
Ambient is lower than 32 deg F or higher
EEPROM initializing for the very fi rst time
EEPROM malfunction
Either of the two reed switches are closed
when they should be open
Calibration diff erence between the front
and rear reed switch is greater than the
REED SWITCH MIN but less than the REED
SWITCH MAX in the calibration menu
Calibration diff erence between the front
and rear reed switch is greater than the
REED SWITCH MAX
Encoder cable not attached
Platen movement obstruction
Motor malfunction
Motor control board malfunction
Encoder cable not attached
Platen movement obstruction
Motor malfunction
Motor control board malfunction
Controller does not detect 3 consecutive
commands from motor control board
Gas not turned on to grill
No spark from ignitor
Blower malfunction
Air switch malfunction
Gas valve not opening
Ignition module malfunction
Air still in the gas line when reconnected
Probe calibration not correct
Operational procedures not being
followed (e.g. no scraper and squeegee)
Stuck closed solid state relay
Gas pressure too high
INSTALLATION/OPERATION & SERVICE MANUAL - 1&2 PLATEN
Poor termination
Poor termination
than 176 deg F
POSSIBLE SOLUTION
Identify sensor as "ungrounded type"
Review wiring instructions
Check confi guration
Continuity check
Is high limit device activated?
Identify sensor as "ungrounded type"
Review wiring instructions
Check confi guration
Continuity check
Is high limit device activated?
Check ventilation of controller area
Wait for 30 seconds for message to disappear
If message fails to clear controller is suspect
Reset reed switch positions in calibration menu
Recalibrate reed switches in the calibration menu
Recalibrate reed switches in the calibration menu
Check pin connection on motor control board
Remove utensils, check exhaust hood clearance, check
for grease build up on shafts
Check voltage to motor
Check voltage to motor control board
Check pin connection on motor control board
Remove utensils, check exhaust hood clearance,
check for grease build up on shafts
Check voltage to motor
Check voltage to motor control board
Check cable connection on both boards and voltage
to motor control board
Check gas valve on supply line and hose connection
Check ignitor wire connections
Check voltage at blower motor
Check voltage at switch, check for pinched air hose
Check voltage at valve listen for valve operation
Check voltage at inputs & outputs of ignition module
Retry by cycling controller off and on
Recalibrate temperature zone
Review procedures when message is displayed
Check for lit LED on Solid State Relay that should be off
Check that manifold pressure is 3.5" W.C.
Allow temperature to cool before operation
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