Buchi SyncorePlus - Page 44

9 | Help with faults BÜCHI Labortechnik AG
44/56 Operation Manual SyncorePlus
Error message Possible cause Solution
981 No I2C signal from touch con-
troller during 300 ms
u Restart the instrument.
u Contact BUCHI Customer
Service.
982 No I2C signal from display dur-
ing 300 ms
u Restart the instrument.
u Contact BUCHI Customer
Service.
983 The fault signal from the motor
driver is still active after 5 resets
of the driver
u Restart the instrument.
u Contact BUCHI Customer
Service.
984 No signal from motor encoder
during 3 sec.
u Restart the instrument.
u Contact BUCHI Customer
Service.
985 No sensor connection bit from
AD converter set during 1 sec.
u Restart the instrument.
u Contact BUCHI Customer
Service.
986 No sensor connection bit from
AD converter set during 1 sec.
u Restart the instrument.
u Contact BUCHI Customer
Service.
987 Temperature of Cover for more
than 3 sec. above 80 °C
u Check Cover connection.
u Restart the instrument.
u Contact BUCHI Customer
Service.
988 Temperature of Base for more
than 3 sec. above 120°C
u Replace the defective parts
u Restart the instrument.
u Contact BUCHI Customer
Service.
989 Current of motor above 1.5 A
during 3 sec.
u Check drive for blocking ele-
ments.
u Check motor drive, and rack
load.
990 Main voltage during 5 sec.
above 275 V (nominal 230 V),
142 V (nominal 115 V), 120 V
(nominal 100 V)
u Check main voltage.
991 Acceleration of instrument
above 0.126 g during 1 sec.
(second level)
u Adjust the unbalance com-
pensation.
992 One or more parameter out of
range
u Check and reconfigure pa-
rameters.
u Restart the instrument.
u Contact BUCHI Customer
Service.