10 | Help with faults
Büchi Labortechnik AG
52/78
Operation Manual Rotavapor® R-250 Pro
10
Help with faults
10.1
Troubleshooting
Problem
Possible cause
Action
The display is black No power.
u
Establish an electrical
connection.
u
Check the fuse.
Display lights only in
part
Display unit is defect.
u
Contact BUCHI Customer
Service.
Heating bath does
not heat up
Temperature is set too low.
u
Raise the temperature.
Heater is switched off.
u
Switch on the heater.
The heater is defect.
u
Contact BUCHI Customer
Service.
Temperature sensor is de-
fect.
u
Contact BUCHI Customer
Service.
Over temperature protec-
tion is active.
u
Reset over-temperature
protection. See Chapter 10.3
"Resetting the
overtemperature protection",
page 56
Evaporation flask
does not rotate
The rotation speed is too
low.
u
Move the Navigation control
clockwise.
The drive belt is torn.
u
Contact BUCHI Customer
Service.
The instrument is defect.
u
Contact BUCHI Customer
Service.
Buttons do not re-
act
The buttons are defect.
u
Contact BUCHI Customer
Service.
Heating bath is not
lifting
No power supply to the bath
lift.
u
Contact BUCHI Customer
Service.
Bath lift defect.
u
Contact BUCHI Customer
Service.
10.2
Error messages
NOTE
Press the
Aerate
button to confirm an error message.
