Torrey Pines Scientific, Inc.
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XIII. TEMPERATURE MEASUREMENT ERROR CODES
The temperature measurement functionality of the unit may be adversely affected by
hardware issues as well as user input error during calibration. Examples include the
temperature sensor malfunctioning (rarely occurs) or the user inadvertently entering the
incorrect measured temperature value during calibration. There are other possibilities
where the calibration value stored in memory is somehow corrupted and an invalid
value is retrieved at startup. If an issue occurs with the temperature measurement
circuitry or with a calibration value that has been restored from memory, the unit will
display the error code in place of the plate temperature value. If an error is detected, all
power to the heater plate will be turned off and an error code will be displayed instead of
the temperature value for “Plate:”.
Table 1 below lists the error codes, the possible cause, and recommended action to
address the error and return the unit to proper operating condition. Calibration errors
(cal0-cal4) are addressed by entering the Menu and resetting the unit to the factory
settings or to the Not Cal settings(see Figure 17). The unit can then be re-calibrated if
necessary.
Error Code
Possible Cause
Recommended Action
RTDo
The RTD Sensor is not connected or has
failed
Inspect Sensor and Sensor Connector
and/or Contact Torrey Pines Scientific
RTDs
The RTD Sensor has shorted or has failed
cal0
The Calibrated Temperature Value is out
of range
Using the Menu, reset Cal Points to
Factory or to Not Cal (see FIgure17)
cal1
Low Cal Point out of range
cal2
High Cal Point out of range
cal3
High Point Measured Cal Value is Lower
than Low Point Measured Value (or
reverse)
cal4
High Point Temperature Value is Lower
than Low Point Temperature Value (or
reverse)
Table 1:
Temperature Measurement Error Codes
