9. FAULTS AND TROUBLE SHOOTING
9.1 OUP: Over Voltage Protection
This unit has a built-in tracking over voltage protection feature. In the event of output voltage becoming
greater than the set value (see specified range from specifications table), protection will be triggered and the
output power will be cut off and OUP warning appears as below.
To reset the warning, switch off the unit and remove all loading.
Switch the unit back on again and it should resume normal operation.
If this problem persists, please contact and consult with your agent.
9.2 OTP: Over Temperature Protection
There is a thermo sensor inside the unit to monitor and to prevent the unit to gets too hot inside. At OTP, there
is no output and the following warning will appear on the LED display.
When you get this warning, switch off the unit and remove all loading.
Check your load and output setting. Allow the unit to cool down for at least 30 minutes.
Check if any of the ventilation is blocked, check enough clearance around power supply.
Listen carefully for the short wind noise from the cooling fan when you turn on the unit again.
If you cannot hear this routine self test wind noise on switch on, the fan is fault and do not use the power
supply, contact your agent.
9.3 OLP: Over Load Protection
Normally the overload protection is sustained by the CC constant current mode.
When the CC mode fails and goes undetected, it may cause serious damage to your test piece or load.
The OLP is to minimize the extent of damage to your loads as power supplies do fail someday.
Switch off your power supply as soon as you see this warning as shown below.
To reset this warning, switch off the unit and remove all loading.
Switch the unit back on again and double check with caution.
If this problem cannot be fixed, please contact and consult with your agent.
