[comfoair] Update README.md (#10427)

* Update README.md

Avoid confusion connecting RS232 to a CAN bus, wasting days of work...

* Update bundles/org.openhab.binding.comfoair/README.md

Co-authored-by: boehan <boehan@users.noreply.github.com>
Co-authored-by: boehan <boehan@users.noreply.github.com>

diff --git a/bundles/org.openhab.binding.comfoair/README.md b/bundles/org.openhab.binding.comfoair/README.md
index 9814efc6e4579a1ad50c652675c115268ca95f1c..f5b96fe6c8e3399220a9ebaa9b58e121815a1d5a 100644 (file)
--- a/bundles/org.openhab.binding.comfoair/README.md
+++ b/bundles/org.openhab.binding.comfoair/README.md
@@ -4,6 +4,8 @@ This binding allows to monitor and control Zehnder ComfoAir serial controlled ve
 Though the binding is developed based on the protocol description for Zehnder ComfoAir devices it should also work for mostly identical systems from different manufacturers, like StorkAir WHR930, Wernig G90-380 and Paul Santos 370 DC.
 It was also successfully tested on a Wernig G90-160.
 
+**NOTE:** This binding does not work with the ComfoAir Q-series (e.g. Q350 or Q450). These ventilation units use a CAN bus for communication and a different protocol.
+
 ### Limitations
 
 * Either the ComfoAir binding or the CCEase Comfocontrol can be active, but not together.