BUCHI Rotavapo R-250 User Manual
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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.