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-rw-r--r--klippy/heater.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/klippy/heater.py b/klippy/heater.py
index 0e854db7..7d746d22 100644
--- a/klippy/heater.py
+++ b/klippy/heater.py
@@ -109,7 +109,7 @@ class PrinterHeater:
self.name = config.get_name()
sensor_params = config.getchoice('sensor_type', Sensors)
self.sensor = sensor_params['class'](config, sensor_params)
- self.min_temp = config.getfloat('min_temp', minval=0.)
+ self.min_temp = config.getfloat('min_temp', minval=KELVIN_TO_CELCIUS)
self.max_temp = config.getfloat('max_temp', above=self.min_temp)
self.min_extrude_temp = config.getfloat(
'min_extrude_temp', 170., minval=self.min_temp, maxval=self.max_temp)