From 5b76d21a8c8211fe5635f260af94359f045538c3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Oliver=20K=C3=B6ster?=
 <36196269+knutwurst@users.noreply.github.com>
Date: Sun, 18 Oct 2020 19:48:30 +0200
Subject: [PATCH] Updated FAQ (english) (markdown)

---
 FAQ-(english).md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/FAQ-(english).md b/FAQ-(english).md
index ca9a51c..d7724c9 100644
--- a/FAQ-(english).md
+++ b/FAQ-(english).md
@@ -16,6 +16,10 @@ The automatic slowdown is activated if the printer does not get data fast enough
 
 Your component fan is now running at full speed, which it didn't before. Simply set the speed in the slicer (e.g. Cura) to 70% and you have the old volume again. This modification is necessary if you want to replace the fan and many fans with the original duty cycle do not run or run poorly.
 
+> My printer stops when printing starts. When I run Pronterface / Octoprint and look at the console output, it says 'Error: XXXXXX failed, system stopped! Heater_ID: X Error: Printer halted. kill() called!'. That was not so before.
+
+This is the [Thermal Runaway Protection](https://help.prusa3d.com/en/article/thermal-runaway-temperature-drops_2131) from Marlin, which struck in. Your nozzle or bed (heater 0 is the nozzle) has not reached or maintained the correct temperature in the given time. This leads to an error. The original Firmware did not have TRP and thus could not stop the printer. There are many reasons for such an error. Most of the time it is simply because someone forgot to set the original component cooler in the slicer to 70% (see above). At 100% it now cools too much and since it blows straight against the nozzle, the temperature drops too much, which looks like a failure for the printer. Another possibility could be a wobbly or defective thermistor or heating cartridge. It is also possible that the new [PID controller](https://en.wikipedia.org/wiki/PID_controller) heats the heater a little too carefully. This can be remedied by the PID tuning in the special menu. It also makes sense to install a silicone sock for the hotend, as this protects the nozzle from drafts.
+
 >Is your firmware better than others?
 
 No. But certainly not worse either.