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Thermo Scientific
Chapter 6 Troubleshooting
Error Displays
An error display indicates an unusual condition. With any message, except CAL, the bath will stop heating and, if applicable,
the pump will stop. With any message the alarm, if enabled, will sound.
Display
Cause/Action
HTC Fault
fixed high temp protection limit exceeded
allow bath to cool down
HTC
restart the bath
if the HTC fault cannot be cleared, the bath must be serviced by an authorized Thermo Scientific
Temperature Control Service Technician.
High Temp Fault
adjustable high temp fault protection limit exceeded
check limit setting
Low Fluid Level
low level protection limit exceeded
!
check fluid level
check for leaks
Open/Shorted Internal Temp Sensor
the bath must be serviced by an authorized Thermo Scientific Temperature Control Service Technician.
Bad Calibration
redo calibration
CAL
ensure calibration set points are 35.0°C and 70.0°C (35.0°C and 55.0°C for Coliform Baths)
Shaker Malfunction
ensure there is nothing in the reservoir hampering shaker movement.
the bath must be serviced by an authorized Thermo Scientific Temperature Control Service Technician.
6
Troubleshooting
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Chapter 6
6-1
Precision
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