Thermo Scientific Premium PC 200 Manual page 56

Section 6 Troubleshooting
6-2
Low Fixed Temp.
Low Temperature
Motor Fault
MOL
Motor Overload
Open RTD1
Internal
Open RTD2
External
Shorted RTD1
Internal
Shorted RTD2
External
Warning Displays
The unit will continue to run with a warning. A warning also sounds the
alarm, if enabled.
High Temperature
High Temperature
Low Level
Low Temperature
• unit's nonadjustable low temperature protection
limit exceeded
• check fluid selection
• adjustable high temperature protection limit
exceeded
• check limit setting
• check fluid selection
• it can take over 10 minutes for the motor
temperature to get low enough before the unit
can be restarted
• allow unit to cool down
• open internal temperature sensor
• open external temperature sensor
• shorted internal temperature sensor
• shorted external temperature sensor
• adjustable high temperature protection limit
exceeded
• check limit setting
• check fluid selection
• adjustable high temperature protection limit
exceeded
• check limit setting
• check fluid selection
• reservoir fluid level too low for safe operation
• check fluid level
• adjustable low temperature protection limit
exceeded
• check limit setting
• check fluid selection
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