diff --git a/src/bus/pwm.c b/src/bus/pwm.c
index 7b60a9d..3ef678c 100644
--- a/src/bus/pwm.c
+++ b/src/bus/pwm.c
@@ -80,6 +80,8 @@ int PWM_Init(void)
 	TCCR1A = BIT(WGM11) | BIT(COM1A1) | BIT(COM1B1);
 	TCCR1B = BIT(WGM12) | BIT(WGM13) | BIT(CS10);
 	ICR1 = PWM_CYCLE_TOP; // 8000 MHz / 25000 KHz
+  
+  // TIMER3: Fast mode, non-inverting, top=ICR3, prescale /1
 
 	TCCR3A = BIT(WGM31) | BIT(COM3A1) | BIT(COM3B1);
 	TCCR3B = BIT(WGM32) | BIT(WGM33) | BIT(CS30);
@@ -100,7 +102,8 @@ void PWM_SetValue(int port, int value)
 	if (port != FAN01 && port != FAN02 && port != FAN03)
 		return; // Invalid port
 
-	n = CLAMP(value, 100, 0) * (PWM_CYCLE_TOP / 100.0f);
+	// Workaround: Missing third 16-bit timer output
+	n = CLAMP(value, 100, 0) * PWM_CYCLE_TOP / 100.0f;
 
 	Info("Setting duty cycle for %s to %d/%d...",
 		(port == FAN01) ? "FAN01" :
diff --git a/src/bus/pwm.h b/src/bus/pwm.h
index 9a8f68f..e0deaf2 100644
--- a/src/bus/pwm.h
+++ b/src/bus/pwm.h
@@ -11,7 +11,7 @@
 #define PWM_CYCLE_TOP  (F_CPU / 25000 - 1) // 8 MHz / 25 KHz
 #define FAN01_MIN_DUTY (PWM_CYCLE_TOP * 0.2f)
 #define FAN02_MIN_DUTY (PWM_CYCLE_TOP * 0.2f)
-#define FAN03_MIN_DUTY (PWM_CYCLE_TOP * 0.2f)
+#define FAN03_MIN_DUTY (0xFF * 0.2f)
 
 int   PWM_Init(void);
 void  PWM_SetValue(int port, int value);