diff --git a/src/thermostat/thermostat.rs b/src/thermostat/thermostat.rs
index b4488fe..f1dea0a 100644
--- a/src/thermostat/thermostat.rs
+++ b/src/thermostat/thermostat.rs
@@ -100,12 +100,10 @@ impl Thermostat{
         }
     }
     pub fn setup(&mut self) {
-        self.power_up();
+        self.power_down();
 
         self.tec_setting = Settings::default();
 
-        self.calibrate_dac_value();
-
         self.set_i(self.tec_setting.i_set);
 
         self.set_max_v(self.tec_setting.max_v_set);