Despatch Stackable LCC/LCD-4 - Manual (Page 44)

T ROUBLESHOOTING Stackable LCC/LCD Oven Owner ’s Manual
44 Version 1.1
Copyright © 2012 by Despatch Industries.
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7.
Troubleshooting: Error Messages and Alarm
Table 7 lists the more common error messages, the possible problems and remedies.
Table 7. Error Messages and Next Steps.
Alarm Status
Possible Problem Next Step
Hi-Limit LED flashing 
Problem with thermocouple

Hi-limit setpoint has been
exceeded.
Once the problem has corrected,
press Reset.
Soak LED flashing Oven temperature has not
entered (or dropped out of) the
soak band and the soak timer
has stopped Program a slower ramp rate or if
oven is not heating check heater
circuit.
Top LED displays
OPEN and lower LCD
displays CONTROL
SENS ERR Control thermocouple is
disconnected or broken Repair or replace the thermocouple.
Lower LCD displays HI
LIM SENS ERR Hi limit thermocouple is
disconnected or broken Repair or replace the thermocouple.
Lower LCD displays
HIGH LIMIT ALARM Hi limit temperature setpoint
has been exceeded Determine if:

the setting is too close to the
setpoint

the SSR is defective

calibration is incorrect

The lower LCD intermittently displays HL Temp. This is not an
error message, but the Hi limit thermocouple temperature
reading.