Using the 2.0 RFXCOM binding I get:
“2017-01-30 23:19:56.309 [ERROR] [binding.rfxcom.handler.RFXComHandler] - Error occurred during message receiving: Can’t convert value UNKNOWN to COMMAND SwitchItem”
when receiving data from an Sartano remote control (HN 6137)
Is it an error, or do I need to configure something for the thing?
Could you enable debug logging so we can see what the actual message is that was received. If you supply the details we can make the estimation on how hard it is to support your device.
I’m hijacking the thread since I have the same problem. 
Here’s my debug output from the doorbell.
08:30:36.952 [DEBUG] [g.rfxcom.handler.RFXComBridgeHandler] - Message received: Raw data = 091300E700553501C460, Packet type = LIGHTING4, Seq number = 231, Sub type = PT2262, Device Id = 21763, Command = UNKNOWN, Pulse = 452
08:30:36.953 [DEBUG] [binding.rfxcom.handler.RFXComHandler] - Received message from bridge: rfxcom:bridge:5a8e2ed8 message: Raw data = 091300E700553501C460, Packet type = LIGHTING4, Seq number = 231, Sub type = PT2262, Device Id = 21763, Command = UNKNOWN, Pulse = 452
Hi,
My RFXCom binding was working fine. After a reboot I get errors and is offline. Any suggestions how to troubleshoot this?
org.openhab.binding.rfxcom.internal.exceptions.RFXComUnsupportedValueException: Unsupported value ‘-30’ for PacketType
at org.openhab.binding.rfxcom.internal.messages.ByteEnumUtil.fromByte(ByteEnumUtil.java:37) ~[bundleFile:?]
at org.openhab.binding.rfxcom.internal.messages.RFXComMessageFactory.createMessage(RFXComMessageFactory.java:132) ~[bundleFile:?]
at org.openhab.binding.rfxcom.internal.handler.RFXComBridgeHandler$MessageListener.packetReceived(RFXComBridgeHandler.java:236) [bundleFile:?]
at org.openhab.binding.rfxcom.internal.connector.RFXComBaseConnector.sendMsgToListeners(RFXComBaseConnector.java:49) [bundleFile:?]
at org.openhab.binding.rfxcom.internal.connector.RFXComStreamReader.run(RFXComStreamReader.java:69) [bundleFile:?]
2020-06-01 22:57:43.705 [ERROR] [internal.handler.RFXComBridgeHandler] - Error occurred during packet receiving, data: 31FF00000000004300000000004300E0716272004300E0716262004300E0716200004300E071620000430000000000704300
org.openhab.binding.rfxcom.internal.exceptions.RFXComUnsupportedValueException: Unsupported value ‘-1’ for PacketType
at org.openhab.binding.rfxcom.internal.messages.ByteEnumUtil.fromByte(ByteEnumUtil.java:37) ~[bundleFile:?]
at org.openhab.binding.rfxcom.internal.messages.RFXComMessageFactory.createMessage(RFXComMessageFactory.java:132) ~[bundleFile:?]
at org.openhab.binding.rfxcom.internal.handler.RFXComBridgeHandler$MessageListener.packetReceived(RFXComBridgeHandler.java:236) [bundleFile:?]
at org.openhab.binding.rfxcom.internal.connector.RFXComBaseConnector.sendMsgToListeners(RFXComBaseConnector.java:49) [bundleFile:?]
at org.openhab.binding.rfxcom.internal.connector.RFXComStreamReader.run(RFXComStreamReader.java:69) [bundleFile:?]
Thanks
Could it be that your serial devices switched logical ports in the OS? So that its not actually talking to an RFXCOM?
Thanks Martin,
That was the issue.