9
6. Wiring Diagram
7. Trouble Shooting
Common failures and Solutions:
Phenomena
Causation
Treatment Method
No power supply
a. poor plug contact or line broke
a. Connect the plug and line.
b. Fuse protector is broken.
b. Change the fuse protector.
No temperature
rising inside
container
a. Low setting temperature
a. Readjust and set temperature
b. Heater is broken.
b. Change the heater
c. Temp. controller is broken
c. Change the temperature
controller
d. Temp. sensor is loose.
d. Screw up the sensor nut.
e. Temp. sensor is broken
e. Change the temperature sensor.
No temperature
rising alarm
a. Set temp. of Detached tem.
limiter is low
a. Readjust the temperature 30
℃
above setting temperature.
b. Detached temp. limiter sensor
is broken.
b. Change the detached temperature
limiter sensor
Temperature cannot
reach the setting
point.
a. Exhaust port is fully opened
a. Shut off the exhaust port.
b. The container is overfilled, no
hot air convection.
b. Decrease amount of sample to
improve convection condition.
The fan doesn’t
work.
The fan motor is broken
Stop work and check electric
capacity and motor
Displaying-------
The sensor is broken
Change the sensor
Display STOP
Time-up
Press the program key for 3s to
start
