LED lamp indication and trouble shooting


L1 Power
Power light
On: Auxiliary power on.
Off:
1.
 Auxiliary power sources have no output->make sure AC1, AC2 auxiliary power sources have power output.
 
2.
 Control board malfunction -> please replace the same spec. control board or send the power regulator for Maintenances.
L2 Input
Input light
On: Control input signal is in.
Off:
1.
 Control signal is not in -> please check the temperature gauge to see if there is input, check the connection and the wiring.
 
2.
 Wrong connection on the electrodes of the control board -> check the electrodes of the temperature gauge.
3.
 Set to zero on the Max VR of the control board or outside VR -> check two VRs to see if any one of them is set to zero.
4.
 Control board malfunction -> please replace the same-spec. control board or send the power regulator for Maintenances.

L3 Output
Output light
On: Power regulator is in output phase angle control.
(light and dark based on the output.)
zero crossing control.
(flash based on the output.)
Off:
1.
 If the abnormal light L5 is on. (fuse burn down or main power has no output.) ? please refer to ERR (L5).
 
2.
 If the temperature light L4 is on. (power regulator is overheating.) ? please refer to TH (L4).
3.
 If the input light L2 is off. (No input signal.) -> please refer to IN (L2).
4.
 If the input light L2 is on. (control board malfunction.) ->please replace the same spec. control board or send the power regulator for maintenances.

L4 TH Err
Temperature
light
On:
1.
 Power regulator is over heating -> cooling fan is not operating, check the power, fan damage, or if the fan is stuck by any object and get rid off it if necessary.
 
2.
 Bad ventilation or the ambient temperature is too high -> please change the installation place or improve the ventilation.
Off:
Normal, power regulator is not overheating.

L5 FUSE/Source Err
Power source
abnormal light

On:
1.
 Main power source have no output or out-of-phase -> check the power output and all the abnormal conditions.
 
2.
 High-speed fuse burn down -> please replace the same spec. fuse and check the shortage and the ground of the loading before restoring the power.
Off:
Normal