From 7245c760941ac35dce4c23a54d4914968107a6c6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gu=C3=B0ni=20M=C3=A1r=20Gilbert?= <gudni.m.g@gmail.com>
Date: Sat, 21 Jan 2023 21:02:25 +0000
Subject: [PATCH] Fix an issue where Altfan Override setting in EEPROM is not
 respected at boot-up

---
 Firmware/Marlin_main.cpp | 10 +++++-----
 Firmware/fancheck.cpp    |  3 +++
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/Firmware/Marlin_main.cpp b/Firmware/Marlin_main.cpp
index 187e880e2..89e77153f 100644
--- a/Firmware/Marlin_main.cpp
+++ b/Firmware/Marlin_main.cpp
@@ -1257,12 +1257,12 @@ void setup()
 #ifdef EXTRUDER_ALTFAN_DETECT
     if (eeprom_read_byte((uint8_t*)EEPROM_ALTFAN_OVERRIDE) == EEPROM_EMPTY_VALUE) {
         eeprom_update_byte((uint8_t*)EEPROM_ALTFAN_OVERRIDE, 0);
-        SERIAL_ECHORPGM(_n("Hotend fan type: "));
-        if (extruder_altfan_detect())
-            SERIAL_ECHOLNRPGM(PSTR("ALTFAN"));
-        else
-            SERIAL_ECHOLNRPGM(PSTR("NOCTUA"));
     }
+    SERIAL_ECHORPGM(_n("Hotend fan type: "));
+    if (extruder_altfan_detect())
+        SERIAL_ECHOLNRPGM(PSTR("ALTFAN"));
+    else
+        SERIAL_ECHOLNRPGM(PSTR("NOCTUA"));
 #endif //EXTRUDER_ALTFAN_DETECT
 
 	plan_init();  // Initialize planner;
diff --git a/Firmware/fancheck.cpp b/Firmware/fancheck.cpp
index 9cf103179..af326b748 100755
--- a/Firmware/fancheck.cpp
+++ b/Firmware/fancheck.cpp
@@ -164,6 +164,9 @@ bool extruder_altfan_detect()
 {
     // override isAltFan setting for detection
     altfanStatus.isAltfan = 0;
+
+    // During initialisation, use the EEPROM value
+    altfanStatus.altfanOverride = eeprom_read_byte((uint8_t *)EEPROM_ALTFAN_OVERRIDE);
     setExtruderAutoFanState(3);
 
     SET_INPUT(TACH_0);