diff --git a/Marlin/Configuration_adv.h b/Marlin/Configuration_adv.h
index 2d510941e..1e63007e5 100644
--- a/Marlin/Configuration_adv.h
+++ b/Marlin/Configuration_adv.h
@@ -94,6 +94,11 @@
 // before setting a PWM value. (Does not work with software PWM for fan on Sanguinololu)
 //#define FAN_KICKSTART_TIME 100
 
+// This defines the minimal speed for the main fan, run in PWM mode
+// to enable uncomment and set minimal PWM speed for reliable running (1-255)
+// if fan speed is [1 - (FAN_MIN_PWM-1)] it is set to FAN_MIN_PWM
+//#define FAN_MIN_PWM 50
+
 // @section extruder
 
 // Extruder cooling fans
diff --git a/Marlin/example_configurations/Felix/Configuration_adv.h b/Marlin/example_configurations/Felix/Configuration_adv.h
index a2f8f4b2a..50d08513f 100644
--- a/Marlin/example_configurations/Felix/Configuration_adv.h
+++ b/Marlin/example_configurations/Felix/Configuration_adv.h
@@ -102,6 +102,11 @@
 // before setting a PWM value. (Does not work with software PWM for fan on Sanguinololu)
 //#define FAN_KICKSTART_TIME 100
 
+// This defines the minimal speed for the main fan, run in PWM mode
+// to enable uncomment and set minimal PWM speed for reliable running (1-255)
+// if fan speed is [1 - (FAN_MIN_PWM-1)] it is set to FAN_MIN_PWM
+//#define FAN_MIN_PWM 50
+
 // @section extruder
 
 // Extruder cooling fans
diff --git a/Marlin/example_configurations/Hephestos/Configuration_adv.h b/Marlin/example_configurations/Hephestos/Configuration_adv.h
index d6ae0f3f8..9e15f9670 100644
--- a/Marlin/example_configurations/Hephestos/Configuration_adv.h
+++ b/Marlin/example_configurations/Hephestos/Configuration_adv.h
@@ -102,6 +102,11 @@
 // before setting a PWM value. (Does not work with software PWM for fan on Sanguinololu)
 //#define FAN_KICKSTART_TIME 100
 
+// This defines the minimal speed for the main fan, run in PWM mode
+// to enable uncomment and set minimal PWM speed for reliable running (1-255)
+// if fan speed is [1 - (FAN_MIN_PWM-1)] it is set to FAN_MIN_PWM
+//#define FAN_MIN_PWM 50
+
 // @section extruder
 
 // Extruder cooling fans
diff --git a/Marlin/example_configurations/K8200/Configuration_adv.h b/Marlin/example_configurations/K8200/Configuration_adv.h
index a2f8f4b2a..1a0106385 100644
--- a/Marlin/example_configurations/K8200/Configuration_adv.h
+++ b/Marlin/example_configurations/K8200/Configuration_adv.h
@@ -102,6 +102,11 @@
 // before setting a PWM value. (Does not work with software PWM for fan on Sanguinololu)
 //#define FAN_KICKSTART_TIME 100
 
+// This defines the minimal speed for the main fan, run in PWM mode
+// to enable uncomment and set minimal PWM speed for reliable running (1-255)
+// if fan speed is [1 - (FAN_MIN_PWM-1)] it is set to FAN_MIN_PWM
+#define FAN_MIN_PWM 50 // K8200: fan stops running at about 35 to 40 (of 255)
+
 // @section extruder
 
 // Extruder cooling fans
diff --git a/Marlin/example_configurations/SCARA/Configuration_adv.h b/Marlin/example_configurations/SCARA/Configuration_adv.h
index 863148e70..0405aaa2f 100644
--- a/Marlin/example_configurations/SCARA/Configuration_adv.h
+++ b/Marlin/example_configurations/SCARA/Configuration_adv.h
@@ -102,6 +102,11 @@
 // before setting a PWM value. (Does not work with software PWM for fan on Sanguinololu)
 //#define FAN_KICKSTART_TIME 100
 
+// This defines the minimal speed for the main fan, run in PWM mode
+// to enable uncomment and set minimal PWM speed for reliable running (1-255)
+// if fan speed is [1 - (FAN_MIN_PWM-1)] it is set to FAN_MIN_PWM
+//#define FAN_MIN_PWM 50
+
 // @section extruder
 
 // Extruder cooling fans
diff --git a/Marlin/example_configurations/WITBOX/Configuration_adv.h b/Marlin/example_configurations/WITBOX/Configuration_adv.h
index ca3c783bc..597cf4aca 100644
--- a/Marlin/example_configurations/WITBOX/Configuration_adv.h
+++ b/Marlin/example_configurations/WITBOX/Configuration_adv.h
@@ -102,6 +102,11 @@
 // before setting a PWM value. (Does not work with software PWM for fan on Sanguinololu)
 //#define FAN_KICKSTART_TIME 100
 
+// This defines the minimal speed for the main fan, run in PWM mode
+// to enable uncomment and set minimal PWM speed for reliable running (1-255)
+// if fan speed is [1 - (FAN_MIN_PWM-1)] it is set to FAN_MIN_PWM
+//#define FAN_MIN_PWM 50
+
 // @section extruder
 
 // Extruder cooling fans
diff --git a/Marlin/example_configurations/delta/biv2.5/Configuration_adv.h b/Marlin/example_configurations/delta/biv2.5/Configuration_adv.h
index 2b2acc81f..aaa0f796a 100644
--- a/Marlin/example_configurations/delta/biv2.5/Configuration_adv.h
+++ b/Marlin/example_configurations/delta/biv2.5/Configuration_adv.h
@@ -102,6 +102,11 @@
 // before setting a PWM value. (Does not work with software PWM for fan on Sanguinololu)
 //#define FAN_KICKSTART_TIME 100
 
+// This defines the minimal speed for the main fan, run in PWM mode
+// to enable uncomment and set minimal PWM speed for reliable running (1-255)
+// if fan speed is [1 - (FAN_MIN_PWM-1)] it is set to FAN_MIN_PWM
+//#define FAN_MIN_PWM 50
+
 // @section extruder
 
 // Extruder cooling fans
diff --git a/Marlin/example_configurations/delta/generic/Configuration_adv.h b/Marlin/example_configurations/delta/generic/Configuration_adv.h
index 3848f9761..30d972022 100644
--- a/Marlin/example_configurations/delta/generic/Configuration_adv.h
+++ b/Marlin/example_configurations/delta/generic/Configuration_adv.h
@@ -102,6 +102,11 @@
 // before setting a PWM value. (Does not work with software PWM for fan on Sanguinololu)
 //#define FAN_KICKSTART_TIME 100
 
+// This defines the minimal speed for the main fan, run in PWM mode
+// to enable uncomment and set minimal PWM speed for reliable running (1-255)
+// if fan speed is [1 - (FAN_MIN_PWM-1)] it is set to FAN_MIN_PWM
+//#define FAN_MIN_PWM 50
+
 // @section extruder
 
 // Extruder cooling fans
diff --git a/Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h b/Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h
index 5f262c2ad..f70c6cd6c 100644
--- a/Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h
+++ b/Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h
@@ -102,6 +102,11 @@
 // before setting a PWM value. (Does not work with software PWM for fan on Sanguinololu)
 //#define FAN_KICKSTART_TIME 100
 
+// This defines the minimal speed for the main fan, run in PWM mode
+// to enable uncomment and set minimal PWM speed for reliable running (1-255)
+// if fan speed is [1 - (FAN_MIN_PWM-1)] it is set to FAN_MIN_PWM
+//#define FAN_MIN_PWM 50
+
 // @section extruder
 
 // Extruder cooling fans
diff --git a/Marlin/example_configurations/makibox/Configuration_adv.h b/Marlin/example_configurations/makibox/Configuration_adv.h
index 8b5075075..4769e028f 100644
--- a/Marlin/example_configurations/makibox/Configuration_adv.h
+++ b/Marlin/example_configurations/makibox/Configuration_adv.h
@@ -102,6 +102,11 @@
 // before setting a PWM value. (Does not work with software PWM for fan on Sanguinololu)
 //#define FAN_KICKSTART_TIME 100
 
+// This defines the minimal speed for the main fan, run in PWM mode
+// to enable uncomment and set minimal PWM speed for reliable running (1-255)
+// if fan speed is [1 - (FAN_MIN_PWM-1)] it is set to FAN_MIN_PWM
+//#define FAN_MIN_PWM 50
+
 // @section extruder
 
 // Extruder cooling fans
diff --git a/Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h b/Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h
index 962a853dd..03cb8b19d 100644
--- a/Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h
+++ b/Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h
@@ -102,6 +102,11 @@
 // before setting a PWM value. (Does not work with software PWM for fan on Sanguinololu)
 //#define FAN_KICKSTART_TIME 100
 
+// This defines the minimal speed for the main fan, run in PWM mode
+// to enable uncomment and set minimal PWM speed for reliable running (1-255)
+// if fan speed is [1 - (FAN_MIN_PWM-1)] it is set to FAN_MIN_PWM
+//#define FAN_MIN_PWM 50
+
 // @section extruder
 
 // Extruder cooling fans