Troubleshooting; Error Codes - Thermo Scientific HP88854100 Instrucciones De Operación

Troubleshooting

Error Codes

Errors E01 through E04 are heating errors. Error Handler will lock out heating functions if heating error is detected.
Stirring functionality is unaffected. Error E05 is stirring error. Error Handler will lock out stirring functions if stirring error
is detected. Heating functionality is unaffected. Error E08 is failure of temperature of speed knob, Error Handler will
lock out both heating and stirring functions if it is detected. If the condition that caused the error is no longer present,
for E01, E03 (out of range) and E05, the unit will clear the errors automatically, for E03 (out of solution), rotating
temperature knob to OFF position or turning off the switch on the left side of the unit will clear the error, and for E02,
E04 and E08, only unplugging the unit will clear the errors.
Displayed Message Intended to Detect
E01
E02
E03
E04
E05
E08
28
Internal thermocouple out
of range.
Excessive top heat-up
time.
External probe left out of
solution or out of range.
Over temperature
condition detected by
electronic circuit.
Motor system failure.
Knob failure
Cause
Internal thermocouple not
connected.
Thermocouple open.
Thermocouple connected
backwards (reversed polarity).
Internal thermocouple short circuit. Call technical service
Failure in internal thermocouple.
Failure in heating element.
Failure in optocoupler/triac circuit.
External probe left out of solution.
Failure in external probe.
Internal thermocouple
temperature is above the Over
Temperature Protection triggering
value .
Locked rotor condition.
Failure in motor.
Failure in motor circuit.
Failure in motor sensor.
Failure in temperature knob or
speed knob.
Solution
Call technical service
Place external probe into
solution.
Replace external probe.
Call technical service
Free locked rotor.
Call technical service