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13 Troubleshooting
13.1 Troubleshooting
In the event that the dry-well appears to function abnormally, this section
may help to find and solve the problem. Several possible problem condi
-
tions 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 dry-well seems faulty or the problem cannot
otherwise be solved, contact Hart Scientific Customer Service for assis
-
tance (1-801-763-1600). Be sure to have the instrument model number,
serial number, and voltage available.
Problem Causes and Solutions
Incorrect temperature reading Power the unit on and watch the display. If the first number displayed is
less than “
”, the unit has been re-initialized. The unit needs to be
re-programmed for R0, ALPHA, and DELTA. These numbers can be found on
the Report of Calibration that was shipped with the unit.
The display is off Check the fuses.
Check that the power cord is plugged in and connected to the unit.
Red LED on display is blank Check that there is power to the unit.
The unit heats slowly Check the Scan and Scan Rate settings. The Scan may be on with the Scan
Rate set low.
An “
”or“ ” is displayed at the
left of the display
The external switch is open causing the displayed temperature to be frozen
and keeping the set-point from scanning. Turn the Switch Test off by press
-
ing the “DOWN” button on the front panel.
If the display flashes
any error code
Initialize the system by performing the Master Reset Sequence.Ifthe
unit repeats the error code, contact a Hart Scientific Authorized Customer
Service Center for a return authorization and for instructions on returning
the unit.
Master Reset Sequence:
Hold the “SET” and “EXIT” keys down at the same time while powering up
the unit. The screen will display ”
”, the instrument model number
and the version of the software. The unit will need to be reprogrammed for
R0, ALPHA, and DELTA in the calibration menu. These numbers can be
found on the Report of Calibration that was shipped with the unit.
If the display flashes “
”
or “
”
The sensor is disconnected or shorted. Please contact Hart Scientific Cus
-
tomer Support for further instructions.
If the display flashes
“
”
The software cut-out is set to low. Check the cut-out setting in the Set-point
menu.
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13 Troubleshooting