10 | Help with faults
Büchi Labortechnik AG
54/78
Operation Manual Rotavapor® R-250 Pro
Error message
Possible cause
Solution
E08
Short circuit at the vacuum
valve.
u
Disconnect the cooling water
valve.
u
Start the instrument again.
u
Replace the cooling water
valve.
u
Contact BUCHI Customer
Service.
E12
The Cooling medium flow is
insufficient.
u
Increase the cooling water
flow.
u
Press the
Aerate
button.
u
Adjust the cooling water flow
sensor. See Chapter 10.5
"Adjusting the cooling water
flow sensor", page 57
u
Replace the cooling water flow
sensor.
u
Contact BUCHI Customer
Service.
E13
The receiving vessel 1 filling
level is reached.
u
Empty receiving vessel 1.
u
Press the
Aerate
button.
u
Adjust the level sensor. See
Chapter 10.6 "Adjusting the
level sensor", page 57
u
Contact BUCHI Customer
Service.
E14
The receiving vessel 2 filling
level is reached.
u
Empty receiving vessel 2.
u
Press the
Aerate
button.
u
Adjust the level sensor. See
Chapter 10.6 "Adjusting the
level sensor", page 57
u
Contact BUCHI Customer
Service.
E26
Short circuit at the bath tem-
perature sensor.
u
Start the instrument again.
u
Contact BUCHI Customer
Service.
E27
Short circuit at the vapor
temperature sensor.
u
Disconnect the vapor
temperature sensor.
u
Start the instrument again.
u
Replace the vapor
temperature sensor.
u
