Master Ender 3: 3 Fixes for Negative Temperature Woes!

Spotting sub-zero readings on your Ender 3? This is a tech hurdle that might halt your 3D printing journey. But fret not! I, Carolina, a tech trainee who pens down her passion, am here to navigate you through this chilly challenge. Dive right in to discover the solutions to this frosty predicament.


Tackling Negative Temperature on the Ender 3: A Detailed Guide
1. Ensure the Thermistor’s Firm Connection
2. Substitute a Faulty Thermistor
3. Switch Out the Mainboard

Addressing Negative Temperature on Ender 3: The Breakdown

1. Ensure the Thermistor’s Firm Connection
Negative temps on the Ender 3? First, scrutinize your thermistor. Verify there are no dangling wires or that the thermistor isn’t unplugged. Should the thermistor be unplugged or face a circuit break, your Ender 3 might display -14°C, either at the nozzle or the heat bed – a surprise many 3D print enthusiasts have encountered.

Remember to warm up your printer and monitor the nozzle’s temp rise. If everything seems in order, your mainboard might just be struggling with super low temps but is otherwise operational.

With the Ender 3, you’ll find two thermistors: one nestled in the nozzle and the other in the bed. Notice a -14°C reading on the nozzle? It’s the nozzle’s thermistor you’ll want to inspect. And if it’s the bed giving you frosty vibes, then focus on the bed thermistor.

For a deeper inspection, grab a multimeter. This will help gauge the thermistor’s electrical resistance. Given that the Ender 3 boasts a 100k NTC type thermistor, at ambient temps, you should clock between 90k to 100k ohms. Many users have swiftly identified thermistor issues by simply putting their multimeter to the test.

Another hands-on trick: swap the connections of the nozzle and bed thermistors. Should the error stick around, it’s likely that your thermistor and its cable are in top shape, but the board’s port could be the culprit. And of course, ensure you’re plugging the thermistor into its rightful slot. Missteps, like connecting the bed thermistor to the fan, can lead to board meltdowns!

Got all that? Moving on!

2. Substitute a Faulty Thermistor
If your Ender 3 consistently throws icy readings, it might be time to replace the thermistor. Spotting damage after the checks? The thermistor needs a swap.

The good news? Thermistors are cost-effective and a breeze to switch out when they go haywire. Several users have thawed out their Ender 3’s freezing temps by simply giving their nozzle thermistor a fresh start.

While fitting the new thermistor, exercise caution with the screw. Over-tightening could spell more trouble – a lesson many have learned the challenging way. If you’re hunting for new thermistors, the 5 Pcs Creality 3D Printer NTC Thermistor 100K is a favored pick. Crafted from premium materials, they promise an effortless installation.

3. Switch Out the Mainboard
Still grappling with icy digits on your Ender 3? It might be time to look beyond the thermistor and consider a mainboard makeover. Especially if you’ve confirmed the thermistor’s functionality, the board could be the frosty offender.

Overenthusiastic tinkering can sometimes result in shorts, which are often terminal for mainboards. If you’re in the market for a new board, many 3D print hobbyists are raving about the BIGTREETECH SKR Mini E3 V3.0 Control Board. It’s not just a silent performer, but also a notable upgrade for your printer. Plus, users swear by its seamless installation process.

Until next time, happy printing and stay warm!