From 5ad60d89a872e16002231cc405af00ddf1917627 Mon Sep 17 00:00:00 2001
From: Scott Lahteine <github@thinkyhead.com>
Date: Sat, 3 Mar 2018 23:29:35 -0600
Subject: [PATCH] autotemp_factor is not value_celsius_diff

See https://github.com/MarlinFirmware/Marlin/issues/9852#issuecomment-369861822
---
 Marlin/planner.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/Marlin/planner.cpp b/Marlin/planner.cpp
index 8ea9b77fac..0c919b13f0 100644
--- a/Marlin/planner.cpp
+++ b/Marlin/planner.cpp
@@ -1680,8 +1680,7 @@ void Planner::refresh_positioning() {
 #if ENABLED(AUTOTEMP)
 
   void Planner::autotemp_M104_M109() {
-    autotemp_enabled = parser.seen('F');
-    if (autotemp_enabled) autotemp_factor = parser.value_celsius_diff();
+    if ((autotemp_enabled = parser.seen('F'))) autotemp_factor = parser.value_float();
     if (parser.seen('S')) autotemp_min = parser.value_celsius();
     if (parser.seen('B')) autotemp_max = parser.value_celsius();
   }