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
D is ab le d
Input is turned off.
N o
−
Cu rv e
Input has no curve.
S .
−
Ov er
Input is at or over full-scale sensor units.
S .
−
Un de r
Input is at or under negative full-scale sensor units.
T .
−
Ov er
Input at or over the high end of the curve.
T .
−
Un de r
Input at or under the low end of the curve.
H TR O pe n
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.
H TR F ai l
Internal component malfunction. Contact Lake Shore.
D ef ec ti ve N OV RA M
Defective NOVRAM. Contact Lake Shore.
I nv al id N OV RA M
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
