diff --git a/lambda/Makefile b/lambda/Makefile
index 4dd53cb..6810e1b 100644
--- a/lambda/Makefile
+++ b/lambda/Makefile
@@ -11,7 +11,7 @@
 MAIN = lambda.c
 
 # en: 0 (default), de: 1
-LANG = 0
+LANG = 1
 
 LOCAL_SOURCE = usart.c interrupts.c adc.c sensors.c integers.c lcdroutines.c \
 display.c alert.c command.c strings.c rules.c
diff --git a/lambda/interrupts.h b/lambda/interrupts.h
index 436faa1..c7d727e 100644
--- a/lambda/interrupts.h
+++ b/lambda/interrupts.h
@@ -15,7 +15,7 @@
 	// timer0 clock prescaler/256 = 3.906 kHz @ 1 MHz
 	#define TIMER0_PRESCALE (1 << CS02)
 	// timer0 compare match about every 31.25 ms = 1000 ms >> 5
-	#define TIMER0_COMP_MATCH 122
+	#define TIMER0_COMP_MATCH 123
 	// timer1 clock prescaler/8 = 125 kHz @ 1MHz
 	#define TIMER1_PRESCALE (1 << CS11)
 	// timer1 compare match at 7.8 kHz generating a 3.9 kHz beep
@@ -26,7 +26,7 @@
 	// timer0 clock prescaler/1024 = 7.812 kHz @ 8 MHz
 	#define TIMER0_PRESCALE (1 << CS02) | (1 << CS00)
 	// timer0 compare match about every 31.25 ms = 1000 ms >> 5
-	#define TIMER0_COMP_MATCH 244
+	#define TIMER0_COMP_MATCH 246
 	// timer1 clock prescaler/64 = 125 kHz @ 8MHz
 	#define TIMER1_PRESCALE (1 << CS11) | (1 << CS10)
 	// timer1 compare match at 7.8 kHz generating a 3.9 kHz beep
diff --git a/lambda/pins.h b/lambda/pins.h
index 244c81d..b6dc765 100644
--- a/lambda/pins.h
+++ b/lambda/pins.h
@@ -39,11 +39,11 @@
 /* Pins for the LCD */
 #define LCD_PORT PORTD
 #define LCD_DDR	 DDRD
-#define LCD_RS   PD7	// prototype: PD6
-#define LCD_EN   PD6	// prototype: PD7
+#define LCD_RS   PD6	// prototype: PD6
+#define LCD_EN   PD7	// prototype: PD7
 #define LCD_DB4  PD5
-#define LCD_DB5  PD4	// prototype: PD2
+#define LCD_DB5  PD2	// prototype: PD2
 #define LCD_DB6  PD3
-#define LCD_DB7  PD2	// prototype: PD4
+#define LCD_DB7  PD4	// prototype: PD4
 
 #endif /* PINS_H_ */
diff --git a/lambda/rules.c b/lambda/rules.c
index 4fcddad..7a81821 100644
--- a/lambda/rules.c
+++ b/lambda/rules.c
@@ -123,7 +123,7 @@
  */
 static void warmStart(bool* const fired, int8_t const dir,
 		Measurement const meas) {
-	if (dir == firing_up && ! isHeaterOn() &&
+	if ((dir == firing_up || dir == burning) && ! isHeaterOn() &&
 			getHeaterState() != heaterStateFault) {
 		// it seems wood has been added or - probably more likely - oven
 		// was fired up without resetting. Should probably work that way
diff --git a/lambda/sensors.h b/lambda/sensors.h
index 37ca5ec..0a4a4a3 100644
--- a/lambda/sensors.h
+++ b/lambda/sensors.h
@@ -13,7 +13,7 @@
 
 #include <stdio.h>
 
-#define SHUNT_MILLIOHMS 100
+#define SHUNT_MILLIOHMS 111
 
 /**
  * Oxygen sensor heater current limits at certain states in milliamps.
@@ -137,8 +137,7 @@
 int8_t getHeaterState(void);
 
 /**
- * Returns the time in seconds that the heater takes to warm up since it was
- * switched on.
+ * Returns the time in seconds passed since that the heater was switched on.
  */
 uint32_t getHeaterUptime(void);