BUCHI Rotavapo R-250 - Manual (Page 26)

26
Rotavapor R-250 5 Operation
5.7 Error Messages
Error messages indicate a defect on the unit and are signalled
ON
E0 : Message: Output from the bath sensor not within the valid range.
Cause: Sensor defective or a short-circuit has occurred.
Action: The bath heater is switched OFF. The bath is lowered. Rotation stops.
Acknowledgment: Switch the unit OFF.
E2 : Message: The bath is not reaching the intended maximum height.
Cause: The motor is defective or blocked. No voltage.
Action: The lift motor switches OFF. Rotation and heating continue.
Acknowledgment: Switch the unit OFF.
E3 : Message: The rotary drive does not reaching the required speed, or is turning too quickly.
Cause: Drive defective. Mechanical blocking. No power. Semi-conductor relay defective.
Action: Bath heater is switched OFF. Bath is lowered.
Acknowledgment: Switch the unit OFF.
E4 : Message: Battery voltage too low. Displayed only when starting the unit.
Cause: PB battery defective
Action: None
Acknowledgment: Press any button.
E5 : Message: EEPROM error.
Cause: Hardware defect.
Action: None.
Acknowledgment: Press any button. Work can then be continued, but a Service technician must
be notified of the problem.
E6: Message: Overload of the valve output
Cause: Valve defective or wrong connections
Action: None.
Acknowledgment: Switch the unit OFF
E27 : Message: Communication with control panel broken.
Cause: Cables or plugs defective.
Action: Heder and Rotation are switched off, bath lowers.
Acknowledgment: Switch the unit off.
E28 : Message: Replay of heater down.
Cause: Overtemperature cutoff is active.
Action: Heder and Rotation are switched off, bath lowers.
Acknowledgment: Reset the overtemperature cutoff. (see chapter 5.5)
Table 5: Error messages
To let all possible error messages appear, the device must
be shut off and on at least once per 24 h.