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5. Trouble-shooting
Troubles
Possible causes
Solutions
Main power indicator
does not light after
turn on main power
switch.
1. Does not connect through power supply.
1. Connect through power supply.
2. Main power switch breakdown.
2. Replace main power switch.
3. Problems of electrical wires.
3. Check electrical wires.
4. Fuse of control circuit melted.
4. Check electrical wires and replace fuse.
5. Transformer problems.
5. Replace the transformer.
E-02 is shown at PV,
buzzer sounds and
machine stops.
1. Voltage of power supply is too low.
1. Check the power supply.
2. Phase failure
2. Check the power supply.
3. Phase frequency mistakes.
3. Exchange the connection of two of the
electrical wires.
Overload alarm of
blower lit up, buzzer
sounds and machine
stops.
1. Abnormal fluctuation of voltage.
1. Check power supply.
2. Blower being stalled.
2. Check the blower.
3. Failures of blower motor.
3. Check the motor.
4. Setting current of overload relay (F1) is too
low.
4. Set the current of overload relay 1.1 times of
rated current of the motor.
Reset overload relay:
Press down the blue button on the relay after 1
minutes.
Heater overheat
alarm is lit up, and
the buzzer sounds
and machine stops
working.
1. Temperature setting mistakes.
1. Correctly set the parameters of
temp.controller.
2. Temp. measuring mistakes.
2. Replace thermocouple.
3. Contactor failure: Process heater.
3. Replace the contactor.
E-04 is shown at
PV, buzzer sounds
and machine stops
1. Heater contactor seized up.
1. Check or replace the heater contactor.
2. EGO parameter setting wrong.
2. Set EGO parameter correctly.
3. EGO fault.
3. Replace EGO.
4. Circuit fault.
4. Check circuit.
E-09 is shown at PV,
buzzer sounds and
machine stops
1. Problems of rotor motor.
1. Check or replace the motor.
2. Rotor belt broken.
2. Replace the belt.
3. Problems of electrical circuit.
3. Check the electrical circuit.
4. Micro switch of the rotor failures.
4. Replace.
5. Parameter mistakes of timer for control of
rotor.
5. Reset the timer. (Set time should be bigger
than rotor rotating time in one turn and plus 1
minute.)
Abnormal temp.
fluctuations.
1. Too short of time since start of the machine.
1. Wait for a while.
2. Improper parameters for temp. controller.
2. Check the parameters of temp. Controller.
Heater temp. can not
rise up.
1. Temp. Setting is too high.
1. Set heater temp. under 180
℃
.
2. Contactor of heater is bad.
2. Replace contactor.
3. Heater is damaged.
3. Replace pipe heater.
4. Problems of thermocouple.
4. Replace thermocouple.
5. Parameter of temp. controller is set to STOP.
5. Set temp. controller under working mode.
6. Temp. controller output problems.
6. Replace or repair temp. controller.
Breaker tripping off
when connects with
power supply.
1. Short circuits of main circuit.
1. Check the circuit.
2. Short circuit of transformer.
2. Replace the breaker.
3. Problems of breaker.
3. Replace the breaker.
