5
10 Troubleshooting
10 Troubleshooting
This section contains information on troubleshooting, CE Comments, and a wiring diagram.
10.1 Troubleshooting Problems, Possible Causes, and Solutions
In the event that the instrument appears to function abnormally, this section may help to find
and solve the problem. Several possible problem conditions are described along with likely
causes and solutions. If a problem arises, please read this section carefully and attempt to
understand and solve the problem. If the problem cannot otherwise be solved, contact an Autho-
rized Service Center (see Section 1.4). Be sure to have the model number, serial number, and
voltage of your instrument available.
Table 4
Troubleshooting Problems
Problem
Possible Causes and Solutions
Incorrect temperature
reading
Incorrect R0, ALPHA, and DELTA parameters.
Find the values for R0, ALPHA, and DELTA on the
Report of Calibration that was shipped with the instrument (or from subsequent calibrations
of the instrument). Reprogram the parameters into the 9132 memory (see Section 6.13,
Calibration Parameters). Allow the instrument to stabilize and verify the accuracy of the
temperature reading.
Controller locked up.
The controller may have locked up due to a power surge or other
aberration. Initialize the system by performing the Factory Reset Sequence.
Factory Reset Sequence.
Hold the SET and EXIT buttons down at the same time while
powering up the instrument. After the instrument displays
-init-
, release the buttons.
The display shows
-init-
, then displays
9132
, and then displays the firmware version.
After performing the master reset sequence, all of the configuration parameters are reset
to their default values. Reprogram the R0, ALPHA, and DELTA parameters into the 9132
memory (see Section 6.13, Calibration Parameters) and any other applicable configuration
parameters. Allow the instrument to stabilize and verify the accuracy of the temperature
reading.
Blank display after mains
power applied
Blown fuse.
A fuse may have blown due to a power surge or failure of a component.
Replace the fuse once. If the fuse blows a second time, it is likely caused by the failure of a
component. Always replace the fuse with one of the same rating, voltage, and type. Never
replace the fuse with one of a higher current rating.
The Instrument heats or
cools too quickly or too
slowly
Incorrect scan and scan rate settings.
The scan and scan rate settings may be set to unwanted
values. Check the Scan and Scan Rate settings. The scan may be off (if the unit seems to be
responding too quickly). The scan may be on with the Scan Rate set low (if unit seems to be
responding too slowly).
The display shows any of
the following:
err 1
,
err 2
,
err 3
,
err 4
,
Err 5
,
Err
6
, or
Err 7
Controller problem.
The error messages signify the following problems with the controller.
Err 1
- a RAM error
Err 2
- a NVRAM error
Err 3
- a Structure error
Err 4
- an ADC setup error
Err 5
- an ADC ready error
Err 6
– a defective control sensor
Err 7
– a heater error
Initialize the system by performing the Factory Reset Sequence describe above.
Temperature cannot be set
above a certain point
Incorrect High Limit parameter.
The High Limit parameter may be set below 500°C. Check this
value as described in Section 6.11, Operating Parameters.
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