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Why does Kehua UPS power supply not output?
There are several items to check when the power supply of Easy Store ups fails:
1. Check whether the power input of Easy Tester UPS is normal.
2. Testing whether the voltage of Easy Storage Battery is normal.
3. Check whether the circuit board inside UPS power supply has short circuit and burning phenomenon.
4. Check whether the input and output terminals of Easy Store ups are firmly connected.
Easy UPS power supply output voltage-free troubleshooting. Easy-to-use UPS power supply AC/DC boot panel display is normal, there is no indication of failure! This UPS plug-in power boot is normal, there is output; but after the power outage, it shows that the battery is working normally, but there is no voltage output.
(1) UPS power supply is plugged into city power (city power is normal) AC start-up: boot-panel display bypass (bypass relay has action) - panel display bypass prompt lights out (relay has no action; note: relay will act normally!); output voltage, but can not be stabilized, it is estimated that the bypass direct output of city power (but the panel's bypass indicator lights are off, showing normal output).
(2) Easy-to-use UPS power supply does not need to be on-line (battery is normal) DC boot: panel display is normal, when the output indicator lights up, the relay does not act, and there is no voltage output (when normal, continue relay action, instant normal voltage output!)
Uninterruptible power supply checks the relay on the motherboard and removes the relay. First, it can measure whether the coil is burnt down. If it is not burned, it may be that the contacts are sticky. It can be tested on the relay and replaced after confirming the failure. If you need to replace, please contact the supplier
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