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        <title>Hot End not heating</title>
        <description> Hello everyone, 

I have an AIO II v3.2 running a createbot max 3D printer. The printer was working great with a 24V 50W hot end. The hot end suddenly stopped heating a few days ago, only the green led next to the mosfet flickers for a while and then switches off. I tried flashing the firmware on it and instead of testing it with the hot end again, I tried it with the hot bed and hot bed thermistor. It worked perfectly fine but the moment I switched it back to the hot end and hot end thermistor, it would switch off and stop heating. 

I would like to have your thoughts on this issue. Also will the microcontroller switch off the mosfet automatically if it senses a short in the hot end ?</description>
        <link>https://reprap.org/forum/read.php?1,887109,887109#msg-887109</link>
        <lastBuildDate>Sat, 11 Apr 2026 08:40:02 -0400</lastBuildDate>
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        <item>
            <guid>https://reprap.org/forum/read.php?1,887109,887137#msg-887137</guid>
            <title>Re: Hot End not heating</title>
            <link>https://reprap.org/forum/read.php?1,887109,887137#msg-887137</link>
            <description><![CDATA[ Even I assumed the same because the LED for the mosfet was flickering and would light up sometimes. So I replaced both the entire wire+thermistor and wire+heater cartridge for the hot end. I faced the exact same issue, when I tested it without plugging in the heater cartridge, the LED would flicker but the moment I plugged in the heater cartridge, the LED would go dead.]]></description>
            <dc:creator>Shakthi</dc:creator>
            <category>General</category>
            <pubDate>Tue, 23 Nov 2021 03:51:09 -0500</pubDate>
        </item>
        <item>
            <guid>https://reprap.org/forum/read.php?1,887109,887113#msg-887113</guid>
            <title>Re: Hot End not heating</title>
            <link>https://reprap.org/forum/read.php?1,887109,887113#msg-887113</link>
            <description><![CDATA[ If the firmware doesn't see a rise in temperature from the thermistor, then it is likely to turn the mosfet off after a few seconds. Perhaps the hot end heater cartridge or the wiring to it has developed a fault?]]></description>
            <dc:creator>dc42</dc:creator>
            <category>General</category>
            <pubDate>Mon, 22 Nov 2021 09:32:03 -0500</pubDate>
        </item>
        <item>
            <guid>https://reprap.org/forum/read.php?1,887109,887109#msg-887109</guid>
            <title>Hot End not heating</title>
            <link>https://reprap.org/forum/read.php?1,887109,887109#msg-887109</link>
            <description><![CDATA[ Hello everyone, <br />
<br />
I have an AIO II v3.2 running a createbot max 3D printer. The printer was working great with a 24V 50W hot end. The hot end suddenly stopped heating a few days ago, only the green led next to the mosfet flickers for a while and then switches off. I tried flashing the firmware on it and instead of testing it with the hot end again, I tried it with the hot bed and hot bed thermistor. It worked perfectly fine but the moment I switched it back to the hot end and hot end thermistor, it would switch off and stop heating. <br />
<br />
I would like to have your thoughts on this issue. Also will the microcontroller switch off the mosfet automatically if it senses a short in the hot end ?]]></description>
            <dc:creator>Shakthi</dc:creator>
            <category>General</category>
            <pubDate>Mon, 22 Nov 2021 05:33:29 -0500</pubDate>
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