18
17.
Trouble Shootings
Error Indicator
Possible cause
Corrections
Power on ,
No display
Power supply is not
connected
Check the power supply system to see if there is
voltage on the line
Plug has no access to
socket
Plug in firmly
The power switch has not
been turned on.
Turn on the power switch on the right
side of the unit
The fuse is broken
Replace fuse with new one of same specification
Circuit occurs mall function
of power box
Notify distributor for repair service
Actual temperature
is higher than the
set point, high
temperature alarm
is activated
Unit has not yet reached the
required (constant)
temperature.
Wait a moment and observe
Temperature setting is at
the blind area of
temperature control
Open the ventilation hole
Improper setting of
refrigeration parameter
Set the refrigeration parameter
to be “0.5”and close
the ventilation opening.
The ventilation fan is broken Notify the distributor to replace the fan
Malfunction occurs with
refrigeration system
Notify the distributor to repair the refrigeration
system
Actual temperature
is lower than the
set point.
low temperature
alarm is activated
Unit has not yet reached the
required ( constant)
temperature
Wait a moment and observe
The circulation of cold air is
excessive
Close(a part of) the ventilation opening
The ventilation fan is broken Notify the distributor to replace the fan
The heater does not work
Notify the distributor to repair the heater
Actual temperature
is fluctuating and
will not be stable
Improper setting of
refrigeration parameter
Refer to Users Guide and reset the refrigeration
parameter
The door (lid) is not closed
firmly
Close the door (lid) firmly
Malfunction occurs with the
control circuit
Notify distributor for repair service
Temperature is
constant out of
control
Malfunction occurs with the
control circuit
Notify distributor for repair service
The oscillation of
platform is unstable
The platform is in imbalance
due to a spoiled object
Remove the object , clear and clean the chamber
The equipment is not placed
horizontally
Adjust the left-back foot leveler install the
equipment in a proper way.
Malfunction occurs with
control circuit
Notify distributor for repair /service
The shaking
platform does not
work
The door switch has not yet
made contact
Check the door to see if it is closed firmly
The platform is blocked with
an object at the bottom
Remove the platform and clear the object and clean
the inside
The belt is broken
Notify the distributor to replace the belt
Malfunction occurs with
control circuit
Notify distributor for repair service
The oscillation of
Malfunction occurs with
Notify distributor for repair service
