I got a new heater block for my TronXY X5ST.

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(Brian G) #1

I got a new heater block for my TronXY X5ST. The thermistor wires were not long enough to get all the way to the controller and it had a different connector. I spliced the heater block and thermistor wires to my existing wiring close to the hot end (before where the wires go into the cable guide). The read out on my controller says the thermistor is at 288 degrees C but it’s at room temp. and the heater will not turn on (because it thinks it’s at 288). I tried swaping the thermistors wires but no luck. Does anyone have any ideas what could be happening?

(Mano Biletsky (Open MAKER)) #2

Did you solder the splices?
Any chance you swapped the wires between heater and thermistor?
Maybe there is a short circuit where you spliced the wires?

I would start with measuring the resistance of the thermistor including the wires. It should be around 100K (100 Kilo-Ohm).

(Brian G) #3

@Mano_Biletsky_Open_M @Mano_Biletsky_Open_M Thanks for the reply. Turns out the screw that holds down the thermistor buld to the heater block was too tight from the factory and dug into the insulation and shorted the two wires. I think I have everything working now.

(Mano Biletsky (Open MAKER)) #4

Good to see you got it! :+1: