diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h
index aeb9ef16ec..056f3f0bcc 100644
--- a/Marlin/Configuration.h
+++ b/Marlin/Configuration.h
@@ -49,7 +49,7 @@
 // 21 = Elefu Ra Board (v3)
 
 #ifndef MOTHERBOARD
-#define MOTHERBOARD 21
+#define MOTHERBOARD 7
 #endif
 
 //// The following define selects which power supply you have. Please choose the one that matches your setup
@@ -85,10 +85,10 @@
 // 52 is 200k thermistor - ATC Semitec 204GT-2 (1k pullup)
 // 55 is 100k thermistor - ATC Semitec 104GT-2 (Used in ParCan) (1k pullup)
 
-#define TEMP_SENSOR_0 1
+#define TEMP_SENSOR_0 -1
 #define TEMP_SENSOR_1 0
 #define TEMP_SENSOR_2 0
-#define TEMP_SENSOR_BED 1
+#define TEMP_SENSOR_BED 0
 
 // Actual temperature must be close to target for this long before M109 returns success
 #define TEMP_RESIDENCY_TIME 10	// (seconds)