Lake Shore Model 332 Temperature Controller User’s Manual
8.9 ERROR MESSAGES
The following are error message that may be displayed by the Model 332 during operation.
Message Description
Disabled
Input is turned off.
No−Curve
Input has no curve.
S.−Over
Input is at or over full-scale sensor units.
S.−Under
Input is at or under negative full-scale sensor units.
T.−Over
Input at or over the high end of the curve.
T.−Under
Input at or under the low end of the curve.
HTR Open
No heater load is connected to the rear panel heater terminals.
Most commonly repaired by checking the heater connections.
May also be caused by a loose connection or malfunctioning
component within the instrument.
HTR Fail
Internal component malfunction. Contact Lake Shore.
Defective NOVRAM
Defective NOVRAM. Contact Lake Shore.
Invalid NOVRAM
Invalid data or contents in NOVRAM – Press and hold the
Escape key for ≈20 seconds to initialize NOVRAM. Refer to
Paragraph 4.21.
Service 8-9
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