DeLonghi Irons - Recent Questions, Troubleshooting & Support

Question edited for correct spelling of maker name. Question moved from Watches category. Is it older than a year as that is the warranty on steam irons. https://b2b.delonghigroup.com/pdf-warranties/5718114000/5713226531%2011.15/5713226531%2011.15.pdf Have you ever descaled it? It may improve the seals on the buttons. If something has broken inside, it will be time for a new one. Getting inside them is very hard and there are no spares. https://www.fixya.com/support/r26134544-cleaning_laundry_iron ..

The Delonghi Pro300 has two thermostats that contact the boiler. One is a low temperature thermostat that allows the boiler to heat up to 145 degrees (F). The other turns off the boiler when the temperature reaches 180 degrees. It sounds like your low temperature thermostat has failed. The part can be ordered on line. You need to have good basic mechanical skills and the proper sized star screwdriver to replace it.

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You have a short in the wiring inside of the iron. It will not work until you get the short fixed.