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8. TROUBLESHOOTING
Troubleshooting Guide
Unit does not turn on/nothing is
displayed in control panel
displays when main circuit
breaker (MCB) is turned “ON”.
Whether power cable is connected securely to power terminal or
outlet.
Whether a power outage is in progress.
Temperature in chamber does
not rise.
Whether temperature setting is below chamber temperature.
Whether power supply voltage has dropped.
Whether external temperature is within operable temperature
range. (operable external temperature range is 5C~35C)
Whether chamber is overloaded (too many samples).
Temperature fluctuates during
operation.
Whether temperature setting is appropriate.
Whether power supply voltage has dropped.
Whether there are large fluctuations in external temperature.
Whether chamber is overloaded (too many test samples).
Temperature reading differs
from manually gauged
temperature.
Overheat prevention device
activates.
Whether calibration offset is set to a value other than “0”. If this is
the case, set it back to “0”.
See “Calibration Offset” (P.33) and confirm calibration offset
setting.
◆ If problem persists, turn off power immediately, disconnect power cable from outlet or terminal and
contact original dealer of purchase for assistance.
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