This is an indication that you have a problem on the power supply section or on the load because of the following reasons : 1. Over Voltage - the regulator might be cycling on over voltage due to lack of load. 2. Over Current Protection - excessive load or faulty power supply cycling will trigger the over current protection circuit. 3. Leaky Capacitor - a dried up main filter capacitor or other filter capacitor in the low voltage power supply that is producing an out-of-regulation condition until it warms up. A bad filter capacitor on the output of a series regulator may result in excessive voltage and subsequent shutdown. 4. A problem with the microcontroller, relay or its driver, or standby power supply. This is not DIY and quite technical so I
Visit the site named 'Electro-help' for more details. Check this link and select the site. View it in 'Flip card' option, which can be selected from the drop down box menu at the left top corner or the display window. It will make search easy. Check this site too.
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