From e680e463426820182d5284f124131401fee13b2b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Oliver=20K=C3=B6ster?=
 <36196269+knutwurst@users.noreply.github.com>
Date: Wed, 15 Sep 2021 09:20:27 +0200
Subject: [PATCH] Updated FAQ (english) (markdown)

---
 FAQ-(english).md | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/FAQ-(english).md b/FAQ-(english).md
index c60e9c6..d3c25ad 100644
--- a/FAQ-(english).md
+++ b/FAQ-(english).md
@@ -78,4 +78,12 @@
 
 >These fan ducts with axial fans are also extremely counterproductive. Axial fans cannot build up air pressure (only radial fans can do that) and so the air suppresses itself. That is why a fan cools much worse than the original fan. As a result, TMC drivers can also overheat and layer shifts occur.
 
->The fact that the layer shift always occurs in the same layer is simply due to the fact that at this very moment the bed has to change direction at an unfavorable angle and time and this is where too much power is being demanded from the motors.
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+>The fact that the layer shift always occurs in the same layer is simply due to the fact that at this very moment the bed has to change direction at an unfavorable angle and time and this is where too much power is being demanded from the motors.
+
+## When I start auto leveling with BLTouch, the nozzle rises, but then stops and a melody sounds. "**STOP called because of BLTouch error - restart with M999**" appears in the serial terminal.
+
+> This error is triggered if the wiring is not correct. In most cases the black or white wire of the sensor has not been connected properly or has been swapped. In rare cases there is a problem with the BLTouch sensor that is defective. However, this error has nothing to do with the Z offset.
+
+## When I auto-level with BLTouch, the first (or more) measuring point(s) is/are approached, but before the auto-leveling is completed, the nozzle stops and the message "**Error: BLTouch Probing Failed**" appears in the terminal.
+
+> This is a typical error if either the bed was manually leveled very imprecisely or if the Z-offset is incorrect. This error message is triggered by an excessive deviation between the measured value and Z=0. In this case, it helps to first level the bed with 4-Point-Easy-Leveling so that the nozzle lightly touches the bed at all 4 corners. If it is still not possible to take a complete measurement, the Z-offset must be readjusted, as it indicates the distance between the nozzle and the sensor when it is triggered.
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