From 54fdf57b8c7365ef13be3739ec7ff9218e26db5a Mon Sep 17 00:00:00 2001
From: Marcio Teixeira <marcio@alephobjects.com>
Date: Tue, 22 Jan 2019 22:33:11 -0700
Subject: [PATCH] ExtUI: Fix fan wrapping around from 0 to 100 (#12987)

---
 Marlin/src/lcd/extensible_ui/ui_api.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Marlin/src/lcd/extensible_ui/ui_api.cpp b/Marlin/src/lcd/extensible_ui/ui_api.cpp
index 417adf9e78..721e9f9b50 100644
--- a/Marlin/src/lcd/extensible_ui/ui_api.cpp
+++ b/Marlin/src/lcd/extensible_ui/ui_api.cpp
@@ -572,7 +572,7 @@ namespace ExtUI {
 
   void setTargetFan_percent(const float value, const fan_t fan) {
     if (fan < FAN_COUNT)
-      thermalManager.set_fan_speed(fan - FAN0, map(value, 0, 100, 0, 255));
+      thermalManager.set_fan_speed(fan - FAN0, map(clamp(value, 0, 100), 0, 100, 0, 255));
   }
 
   void setFeedrate_percent(const float value) {