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    Heatbed shows wrong temperature.

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    • tklnundefined
      tkln
      last edited by tkln

      Hello,

      I have a silikon heat bed. I use the Duet 3 Main Board 6HC with 48V and run the bed with 230V+ SSR. Unfortunately, the system shows me the wrong temperature, it should show 22.7 °C but it shows 85.3 °C. My filament heater reads the correct temperature (22.7°C).

      This is how I configured the heatbed: QWG-104F-3950

      ; Heaters
      M308 S0 P"temp0" Y"thermistor" T100000 B3950            ; configure sensor 0 as thermistor on pin temp0
      M950 H0 C"out0" T0                                      ; create bed heater output on out0 and map it to sensor 0
      M307 H0 B1 S1.00                                        ; enable bang-bang mode for the bed heater and set PWM limit
      M140 H0                                                 ; map heated bed to heater 0
      M143 H0 S120                                            ; set temperature limit for heater 0 to 120C
      
      droftartsundefined 1 Reply Last reply Reply Quote 0
      • droftartsundefined
        droftarts administrators @tkln
        last edited by

        @tkln said in Heatbed shows wrong temperature.:

        M308 S0 P"temp0" Y"thermistor" T100000 B3950

        Most likely your thermistor is a 10k ohm version, not 100k ohm. Take out one of the zeros in the T parameter. It would be best to get the thermistor specification from the manufacturer, so both the T and B parameter are correct for your thermistor.

        Ian

        Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth

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        • tklnundefined tkln has marked this topic as solved
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