Dry-well Calibrator
Troubleshooting Problems, Possible Causes, and Solutions
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Troubleshooting Problems, Possible Causes, and Solutions
This section contains information on troubleshooting, CE Comments, and a wiring diagram.
In the event that the Product 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 Table
carefully and attempt to understand and solve the problem. If the
problem cannot otherwise be solved, contact an Authorized Service Center (see
for assistance. Be sure to have the model number, serial number, voltage, and problem
description available.
Table 4. Troubleshooting
Problem
Possible Causes and Solutions
Incorrect
temperature reading
Incorrect R0, ALPHA, and DELTA parameters.
Find the value for R0,
ALPHA, and DELTA on the Report of Calibration. Reprogram the
parameters into the Product (see
Product 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
SET
and
EXIT
down simultaneously while
powering up the Product. The Product display shows ‘-init-,‘ the model
number, and the firmware version. Each of the controller parameters and
calibration constants must be reprogrammed. The values can be found on
the Report of Calibration (see
).
The Product 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).
Improper line voltage.
Verify the bottom of the unit matches the source
voltage.
Unstable display
Wait.
Allow the Product to stabilize for a few minutes.
Proportional band may be incorrect.
Refer to the proportional band on
the Report of Calibration.
