Circuit-test PSC-6916, Operation Manual

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10. Faults and Trouble Shooting
10.1 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.
There is a thermo sensor inside the unit to monitor and to prevent the unit to get
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
the unit is turned ON again. If you don't hear the self test wind noise,the fan is
faulty. Do not use the power supply and contact your agent.
10.2 OTP: Over Temperature Protection