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Troubleshooting
If you have problems using the unit, follow these general procedures to track down the cause from the symp-
toms you are experiencing. If an error message appears on the display, refer to the specific error in this chart.
If the problem is not resolved using the table below, contact Technical Support at 1-800-553-0039.
Problem
No power indication
No heating
Always heating
Very slow heating of samples
Unit heating up slower than
normal
Alarm light on constantly
Display not correct
Erratic operation
Error Message: E1
Error Message: E2
Display shows LLLL at power-up
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Possible Cause
Unit not plugged in; no power at the outlet; incorrect power (make
sure outlet matches label on back of unit); defective power cord;
defective power switch or fuse (s) (call Technical Support).
Setpoint or backup not set properly; defective heater or controller
(call Technical Support).
Defective controller (call Technical Support).
Empty tank or extremely low liquid level in tank (add liquid to the tank
to improve heating).
Defective controller (call Technical Support).
Setpoint or backup not set properly; defective primary controller
(call Technical Support).
Temperature F or C set in error; temperature not calibrated (perform
calibration procedure with thermometer); defective controller
(call Technical Support).
Broken internal electrical connection; defective heater or controller
(call Technical Support).
Failure of temperature sensor or controller (call Technical Support).
Failure of controller (call Technical Support).
Wrong voltage; controller not set up properly (call Technical Support).
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