8. General faults and troubleshooting
Failure phenomenon
Equipment is ON but the
display is not.
Rolling plate does not
rotate
Instability of the rolling
plate
The measured
temperature is higher
than the set temperature
or the system enters the
high temperature alarm
state.
The noise of the
instrument is too loud
Fault analysis
Power supply is not
connected
The power plug is not
plugged in
The power switch is not on
Damage of the fuse on the
box
Door switch does not work
The bottom of the rolling
plate is stuck with an object
Belt damage
Control circuit fault
The instrument is not stable
External object at the
bottom of the plate
Control circuit fault
The door is not properly
closed
The instrument has not yet
entered the state of
constant temperature
Damage of the circulating
fan
Failure of the refrigeration
system
The instrument is not placed
properly
The flask clamp fixing
screw is loose
Shake plate loosening
Bump on the bottom of the
plate due to an object
Mechanical failure
15
Troubleshooting
Check if the power outlet has power
Check the contact between the
power plug and the socket
Turn on the power switch on the right
side of the instrument
Replacement of a power fuse with
the same specification
Check if the door is closed or not
Remove the object
Notify the factory to get the belt
replaced
Notify the factory to get it repaired
Adjust the foot of the instrument to
stabilize the instrument
Remove the object
Notify the factory to get it repaired
Close the door properly
Wait for a moment and check again
Notify the factory to get the fan
replaced
Notify the factory to get it repaired
Adjust the foot of the instrument to
stabilize the instrument
Remove the flask and the plate and
tighten the screw
Tighten the screws at the four corners
of the plate
Remove the object
Notify the factory to get it repaired