Ok so i changed the log level to debugging.
Here are the event logs
2018-02-21 10:18:00.005 [ome.event.ItemCommandEvent] - Item 'UHVAC_Mode' received command 2
2018-02-21 10:18:00.009 [ome.event.ItemCommandEvent] - Item 'UHVAC_CoolSetPoint' received command 82
2018-02-21 10:18:00.016 [vent.ItemStateChangedEvent] - UHVAC_CoolSetPoint changed from 74 to 82
2018-02-21 10:18:01.074 [vent.ItemStateChangedEvent] - UHVAC_CoolSetPoint changed from 82 to 74
and here is the openhab log from the relevant times from 10:18:00 to 10:18:02
2018-02-21 10:18:00.002 [DEBUG] [rg.quartz.core.QuartzSchedulerThread] - batch acquisition of 0 triggers
2018-02-21 10:18:00.002 [DEBUG] [org.quartz.core.JobRunShell ] - Calling execute on job DEFAULT.AC_Control.rules#Upstairs AC#0 0/1 * 1/1 * ? *
2018-02-21 10:18:00.006 [DEBUG] [org.eclipse.jetty.server.HttpChannel] - sendResponse info=null content=DirectByteBuffer@6733deb7[p=0,l=146,c=32768,r=146]={<<<event: message\nda...ommandEvent"}\n\n>>>,"type":"ThingSta...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00} complete=false committing=false callback=Blocker@5ec09005{null}
2018-02-21 10:18:00.007 [DEBUG] [.eclipse.jetty.server.HttpConnection] - org.eclipse.jetty.server.HttpConnection$SendCallback@7703523a[PROCESSING][i=null,cb=Blocker@5ec09005{null}] generate: FLUSH (null,[p=0,l=146,c=32768,r=146],false)@COMMITTED
2018-02-21 10:18:00.008 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - write: WriteFlusher@7c723c77{IDLE} [DirectByteBuffer@6733deb7[p=0,l=146,c=32768,r=146]={<<<event: message\nda...ommandEvent"}\n\n>>>,"type":"ThingSta...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00}]
2018-02-21 10:18:00.010 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - update WriteFlusher@7c723c77{WRITING}:IDLE-->WRITING
2018-02-21 10:18:00.012 [DEBUG] [org.eclipse.jetty.io.ChannelEndPoint] - flushed 146 SelectChannelEndPoint@14df00ea{/127.0.0.1:52386<->8080,Open,in,out,-,W,944/30000,HttpConnection@2501343e}{io=0/0,kio=0,kro=1}
2018-02-21 10:18:00.013 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - Flushed=true 146/146+0 WriteFlusher@7c723c77{WRITING}
2018-02-21 10:18:00.014 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - update WriteFlusher@7c723c77{IDLE}:WRITING-->IDLE
2018-02-21 10:18:00.014 [DEBUG] [org.eclipse.jetty.server.HttpChannel] - sendResponse info=null content=DirectByteBuffer@18d490bd[p=0,l=362,c=32768,r=362]={<<<event: event\ndata...d":"default"}\n\n>>>"default","pageId...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00} complete=false committing=false callback=Blocker@2556df1a{null}
2018-02-21 10:18:00.014 [DEBUG] [.eclipse.jetty.server.HttpConnection] - org.eclipse.jetty.server.HttpConnection$SendCallback@11391c7a[PROCESSING][i=null,cb=Blocker@2556df1a{null}] generate: FLUSH (null,[p=0,l=362,c=32768,r=362],false)@COMMITTED
2018-02-21 10:18:00.015 [DEBUG] [.eclipse.jetty.server.HttpConnection] - org.eclipse.jetty.server.HttpConnection$SendCallback@7703523a[PROCESSING][i=null,cb=Blocker@5ec09005{null}] generate: DONE (null,[p=146,l=146,c=32768,r=0],false)@COMMITTED
2018-02-21 10:18:00.015 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - write: WriteFlusher@230a8c68{IDLE} [DirectByteBuffer@18d490bd[p=0,l=362,c=32768,r=362]={<<<event: event\ndata...d":"default"}\n\n>>>"default","pageId...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00}]
2018-02-21 10:18:00.015 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - update WriteFlusher@230a8c68{WRITING}:IDLE-->WRITING
2018-02-21 10:18:00.015 [DEBUG] [org.eclipse.jetty.server.HttpChannel] - sendResponse info=null content=DirectByteBuffer@6733deb7[p=0,l=142,c=32768,r=142]={<<<event: message\nda...mStateEvent"}\n\n>>>"}\n\n,"type":"Thin...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00} complete=false committing=false callback=Blocker@5ec09005{null}
2018-02-21 10:18:00.016 [DEBUG] [.eclipse.jetty.server.HttpConnection] - org.eclipse.jetty.server.HttpConnection$SendCallback@7703523a[PROCESSING][i=null,cb=Blocker@5ec09005{null}] generate: FLUSH (null,[p=0,l=142,c=32768,r=142],false)@COMMITTED
2018-02-21 10:18:00.016 [DEBUG] [org.eclipse.jetty.io.ChannelEndPoint] - flushed 362 SelectChannelEndPoint@92017df{/0:0:0:0:0:0:0:1:53786<->8080,Open,in,out,-,W,947/30000,HttpConnection@5c05ad3b}{io=0/0,kio=0,kro=1}
2018-02-21 10:18:00.017 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - Flushed=true 362/362+0 WriteFlusher@230a8c68{WRITING}
2018-02-21 10:18:00.017 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - write: WriteFlusher@7c723c77{IDLE} [DirectByteBuffer@6733deb7[p=0,l=142,c=32768,r=142]={<<<event: message\nda...mStateEvent"}\n\n>>>"}\n\n,"type":"Thin...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00}]
2018-02-21 10:18:00.017 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - update WriteFlusher@230a8c68{IDLE}:WRITING-->IDLE
2018-02-21 10:18:00.018 [DEBUG] [.eclipse.jetty.server.HttpConnection] - org.eclipse.jetty.server.HttpConnection$SendCallback@11391c7a[PROCESSING][i=null,cb=Blocker@2556df1a{null}] generate: DONE (null,[p=362,l=362,c=32768,r=0],false)@COMMITTED
2018-02-21 10:18:00.018 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - update WriteFlusher@7c723c77{WRITING}:IDLE-->WRITING
2018-02-21 10:18:00.019 [DEBUG] [org.eclipse.jetty.io.ChannelEndPoint] - flushed 142 SelectChannelEndPoint@14df00ea{/127.0.0.1:52386<->8080,Open,in,out,-,W,6/30000,HttpConnection@2501343e}{io=0/0,kio=0,kro=1}
2018-02-21 10:18:00.019 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - Flushed=true 142/142+0 WriteFlusher@7c723c77{WRITING}
2018-02-21 10:18:00.020 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - update WriteFlusher@7c723c77{IDLE}:WRITING-->IDLE
2018-02-21 10:18:00.021 [DEBUG] [.eclipse.jetty.server.HttpConnection] - org.eclipse.jetty.server.HttpConnection$SendCallback@7703523a[PROCESSING][i=null,cb=Blocker@5ec09005{null}] generate: DONE (null,[p=142,l=142,c=32768,r=0],false)@COMMITTED
2018-02-21 10:18:00.022 [DEBUG] [org.eclipse.jetty.server.HttpChannel] - sendResponse info=null content=DirectByteBuffer@6733deb7[p=0,l=155,c=32768,r=155]={<<<event: message\nda...ommandEvent"}\n\n>>>ThingStatusInfoEv...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00} complete=false committing=false callback=Blocker@5ec09005{null}
2018-02-21 10:18:00.022 [DEBUG] [.eclipse.jetty.server.HttpConnection] - org.eclipse.jetty.server.HttpConnection$SendCallback@7703523a[PROCESSING][i=null,cb=Blocker@5ec09005{null}] generate: FLUSH (null,[p=0,l=155,c=32768,r=155],false)@COMMITTED
2018-02-21 10:18:00.023 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - write: WriteFlusher@7c723c77{IDLE} [DirectByteBuffer@6733deb7[p=0,l=155,c=32768,r=155]={<<<event: message\nda...ommandEvent"}\n\n>>>ThingStatusInfoEv...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00}]
2018-02-21 10:18:00.024 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - update WriteFlusher@7c723c77{WRITING}:IDLE-->WRITING
2018-02-21 10:18:00.025 [DEBUG] [org.eclipse.jetty.io.ChannelEndPoint] - flushed 155 SelectChannelEndPoint@14df00ea{/127.0.0.1:52386<->8080,Open,in,out,-,W,6/30000,HttpConnection@2501343e}{io=0/0,kio=0,kro=1}
2018-02-21 10:18:00.025 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - Flushed=true 155/155+0 WriteFlusher@7c723c77{WRITING}
2018-02-21 10:18:00.026 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - update WriteFlusher@7c723c77{IDLE}:WRITING-->IDLE
2018-02-21 10:18:00.027 [DEBUG] [.eclipse.jetty.server.HttpConnection] - org.eclipse.jetty.server.HttpConnection$SendCallback@7703523a[PROCESSING][i=null,cb=Blocker@5ec09005{null}] generate: DONE (null,[p=155,l=155,c=32768,r=0],false)@COMMITTED
2018-02-21 10:18:00.028 [DEBUG] [org.eclipse.jetty.server.HttpChannel] - sendResponse info=null content=DirectByteBuffer@6733deb7[p=0,l=151,c=32768,r=151]={<<<event: message\nda...mStateEvent"}\n\n>>>"}\n\nThingStatusIn...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00} complete=false committing=false callback=Blocker@5ec09005{null}
2018-02-21 10:18:00.028 [DEBUG] [.eclipse.jetty.server.HttpConnection] - org.eclipse.jetty.server.HttpConnection$SendCallback@7703523a[PROCESSING][i=null,cb=Blocker@5ec09005{null}] generate: FLUSH (null,[p=0,l=151,c=32768,r=151],false)@COMMITTED
2018-02-21 10:18:00.029 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - write: WriteFlusher@7c723c77{IDLE} [DirectByteBuffer@6733deb7[p=0,l=151,c=32768,r=151]={<<<event: message\nda...mStateEvent"}\n\n>>>"}\n\nThingStatusIn...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00}]
2018-02-21 10:18:00.030 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - update WriteFlusher@7c723c77{WRITING}:IDLE-->WRITING
2018-02-21 10:18:00.031 [DEBUG] [org.eclipse.jetty.io.ChannelEndPoint] - flushed 151 SelectChannelEndPoint@14df00ea{/127.0.0.1:52386<->8080,Open,in,out,-,W,6/30000,HttpConnection@2501343e}{io=0/0,kio=0,kro=1}
2018-02-21 10:18:00.031 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - Flushed=true 151/151+0 WriteFlusher@7c723c77{WRITING}
2018-02-21 10:18:00.032 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - update WriteFlusher@7c723c77{IDLE}:WRITING-->IDLE
2018-02-21 10:18:00.033 [DEBUG] [.eclipse.jetty.server.HttpConnection] - org.eclipse.jetty.server.HttpConnection$SendCallback@7703523a[PROCESSING][i=null,cb=Blocker@5ec09005{null}] generate: DONE (null,[p=151,l=151,c=32768,r=0],false)@COMMITTED
2018-02-21 10:18:00.034 [DEBUG] [org.eclipse.jetty.server.HttpChannel] - sendResponse info=null content=DirectByteBuffer@6733deb7[p=0,l=209,c=32768,r=209]={<<<event: message\nda...hangedEvent"}\n\n>>>p | d...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00} complete=false committing=false callback=Blocker@5ec09005{null}
2018-02-21 10:18:00.034 [DEBUG] [.eclipse.jetty.server.HttpConnection] - org.eclipse.jetty.server.HttpConnection$SendCallback@7703523a[PROCESSING][i=null,cb=Blocker@5ec09005{null}] generate: FLUSH (null,[p=0,l=209,c=32768,r=209],false)@COMMITTED
2018-02-21 10:18:00.035 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - write: WriteFlusher@7c723c77{IDLE} [DirectByteBuffer@6733deb7[p=0,l=209,c=32768,r=209]={<<<event: message\nda...hangedEvent"}\n\n>>>p | d...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00}]
2018-02-21 10:18:00.036 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - update WriteFlusher@7c723c77{WRITING}:IDLE-->WRITING
2018-02-21 10:18:00.037 [DEBUG] [org.eclipse.jetty.io.ChannelEndPoint] - flushed 209 SelectChannelEndPoint@14df00ea{/127.0.0.1:52386<->8080,Open,in,out,-,W,6/30000,HttpConnection@2501343e}{io=0/0,kio=0,kro=1}
2018-02-21 10:18:00.037 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - Flushed=true 209/209+0 WriteFlusher@7c723c77{WRITING}
2018-02-21 10:18:00.038 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - update WriteFlusher@7c723c77{IDLE}:WRITING-->IDLE
2018-02-21 10:18:00.039 [DEBUG] [.eclipse.jetty.server.HttpConnection] - org.eclipse.jetty.server.HttpConnection$SendCallback@7703523a[PROCESSING][i=null,cb=Blocker@5ec09005{null}] generate: DONE (null,[p=209,l=209,c=32768,r=0],false)@COMMITTED
2018-02-21 10:18:01.071 [DEBUG] [org.eclipse.jetty.server.HttpChannel] - sendResponse info=null content=DirectByteBuffer@6733deb7[p=0,l=151,c=32768,r=151]={<<<event: message\nda...mStateEvent"}\n\n>>>\\",\\"oldValue\\":\\...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00} complete=false committing=false callback=Blocker@5ec09005{null}
2018-02-21 10:18:01.071 [DEBUG] [.eclipse.jetty.server.HttpConnection] - org.eclipse.jetty.server.HttpConnection$SendCallback@7703523a[PROCESSING][i=null,cb=Blocker@5ec09005{null}] generate: FLUSH (null,[p=0,l=151,c=32768,r=151],false)@COMMITTED
2018-02-21 10:18:01.072 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - write: WriteFlusher@7c723c77{IDLE} [DirectByteBuffer@6733deb7[p=0,l=151,c=32768,r=151]={<<<event: message\nda...mStateEvent"}\n\n>>>\\",\\"oldValue\\":\\...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00}]
2018-02-21 10:18:01.072 [DEBUG] [org.eclipse.jetty.server.HttpChannel] - sendResponse info=null content=DirectByteBuffer@18d490bd[p=0,l=362,c=32768,r=362]={<<<event: event\ndata...d":"default"}\n\n>>>"default","pageId...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00} complete=false committing=false callback=Blocker@2556df1a{null}
2018-02-21 10:18:01.072 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - update WriteFlusher@7c723c77{WRITING}:IDLE-->WRITING
2018-02-21 10:18:01.072 [DEBUG] [.eclipse.jetty.server.HttpConnection] - org.eclipse.jetty.server.HttpConnection$SendCallback@11391c7a[PROCESSING][i=null,cb=Blocker@2556df1a{null}] generate: FLUSH (null,[p=0,l=362,c=32768,r=362],false)@COMMITTED
2018-02-21 10:18:01.072 [DEBUG] [org.eclipse.jetty.io.ChannelEndPoint] - flushed 151 SelectChannelEndPoint@14df00ea{/127.0.0.1:52386<->8080,Open,in,out,-,W,1035/30000,HttpConnection@2501343e}{io=0/0,kio=0,kro=1}
2018-02-21 10:18:01.073 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - write: WriteFlusher@230a8c68{IDLE} [DirectByteBuffer@18d490bd[p=0,l=362,c=32768,r=362]={<<<event: event\ndata...d":"default"}\n\n>>>"default","pageId...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00}]
2018-02-21 10:18:01.073 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - Flushed=true 151/151+0 WriteFlusher@7c723c77{WRITING}
2018-02-21 10:18:01.073 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - update WriteFlusher@230a8c68{WRITING}:IDLE-->WRITING
2018-02-21 10:18:01.073 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - update WriteFlusher@7c723c77{IDLE}:WRITING-->IDLE
2018-02-21 10:18:01.073 [DEBUG] [.eclipse.jetty.server.HttpConnection] - org.eclipse.jetty.server.HttpConnection$SendCallback@7703523a[PROCESSING][i=null,cb=Blocker@5ec09005{null}] generate: DONE (null,[p=151,l=151,c=32768,r=0],false)@COMMITTED
2018-02-21 10:18:01.073 [DEBUG] [org.eclipse.jetty.io.ChannelEndPoint] - flushed 362 SelectChannelEndPoint@92017df{/0:0:0:0:0:0:0:1:53786<->8080,Open,in,out,-,W,1056/30000,HttpConnection@5c05ad3b}{io=0/0,kio=0,kro=1}
2018-02-21 10:18:01.074 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - Flushed=true 362/362+0 WriteFlusher@230a8c68{WRITING}
2018-02-21 10:18:01.074 [DEBUG] [org.eclipse.jetty.server.HttpChannel] - sendResponse info=null content=DirectByteBuffer@6733deb7[p=0,l=209,c=32768,r=209]={<<<event: message\nda...hangedEvent"}\n\n>>>p | d...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00} complete=false committing=false callback=Blocker@5ec09005{null}
2018-02-21 10:18:01.074 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - update WriteFlusher@230a8c68{IDLE}:WRITING-->IDLE
2018-02-21 10:18:01.075 [DEBUG] [.eclipse.jetty.server.HttpConnection] - org.eclipse.jetty.server.HttpConnection$SendCallback@11391c7a[PROCESSING][i=null,cb=Blocker@2556df1a{null}] generate: DONE (null,[p=362,l=362,c=32768,r=0],false)@COMMITTED
2018-02-21 10:18:01.075 [DEBUG] [.eclipse.jetty.server.HttpConnection] - org.eclipse.jetty.server.HttpConnection$SendCallback@7703523a[PROCESSING][i=null,cb=Blocker@5ec09005{null}] generate: FLUSH (null,[p=0,l=209,c=32768,r=209],false)@COMMITTED
2018-02-21 10:18:01.076 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - write: WriteFlusher@7c723c77{IDLE} [DirectByteBuffer@6733deb7[p=0,l=209,c=32768,r=209]={<<<event: message\nda...hangedEvent"}\n\n>>>p | d...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00}]
2018-02-21 10:18:01.076 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - update WriteFlusher@7c723c77{WRITING}:IDLE-->WRITING
2018-02-21 10:18:01.077 [DEBUG] [org.eclipse.jetty.io.ChannelEndPoint] - flushed 209 SelectChannelEndPoint@14df00ea{/127.0.0.1:52386<->8080,Open,in,out,-,W,4/30000,HttpConnection@2501343e}{io=0/0,kio=0,kro=1}
2018-02-21 10:18:01.078 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - Flushed=true 209/209+0 WriteFlusher@7c723c77{WRITING}
2018-02-21 10:18:01.079 [DEBUG] [org.eclipse.jetty.io.WriteFlusher ] - update WriteFlusher@7c723c77{IDLE}:WRITING-->IDLE
2018-02-21 10:18:01.079 [DEBUG] [.eclipse.jetty.server.HttpConnection] - org.eclipse.jetty.server.HttpConnection$SendCallback@7703523a[PROCESSING][i=null,cb=Blocker@5ec09005{null}] generate: DONE (null,[p=209,l=209,c=32768,r=0],false)@COMMITTED