30
Troubleshooting
By purchasing the laboratory power supply unit, you have acquired a product that is reliable and opera-
tionally safe.
Nevertheless, problems or errors may occur.
For this reason we want to describe how to troubleshoot potential malfunctions:
Always adhere to the safety instructions!
Error
Possible cause
The power supply cannot
Does the operating display (2) light up on the power supply?
be switched on.
Check the mains voltage (you may also want to check the mains
fuse in the device or the line circuit breaker).
Connected consumer devices
Is the voltage set correctly?
do not work.
Is the polarity correct?
Check the technical data of the consumers.
The “OT” display is lit.
The power supply is overloaded and overheated.
Leave the device on and cool down without load.
The “CC“ display is lit.
constant current mode
The preset current was exceeded.
Check power consumption on your consumer and increase the
current limitation on your power supply, if applicable.
The “CV” display is lit
Constant voltage mode
The power supply functions normally. The set, constant voltage
will be emitted at the output.
Regularly check the technical safety of the device, e.g. for damaged housing etc.
Any other repair work must always be carried out by a specialist familiar with the
hazards involved and with the relevant regulations. Unauthorized modifications
or repairs to the device invalidate the warranty/guarantee. Fuses are replace-
ment parts and not covered by the warranty/guarantee.