Echo mismatch from CCD temperature monitoring

After a while, a error occurs on the ccd status command and cause the temperature monitoring to stop.
It's seem that the buffer isn't synchronised anymore.

The only solution for now is to reboot the FEE.

17:28:57.757250 .hub 0 cmds d CmdQueued=180320,1485883737.75,"client.alefur",2,"ccd_r1",5,"status"
17:28:57.777622 client.alefur 2 ccd_r1 w text='pathetic version string: unknown'
17:28:57.777876 client.alefur 2 ccd_r1 i version="unknown"
17:28:57.778100 client.alefur 2 ccd_r1 i text="exposure=None"
17:28:57.778327 client.alefur 2 ccd_r1 f text="command failed: RuntimeError(\"command echo mismatch. sent :'rt,FEE': rcvd :'264.87':\",) at /home/hostpfs/cpl/git/2016-11-30/ics_xcu_fpga/python/xcu_fpga/fee/feeControl.py:788"
17:28:57.778562 .hub 0 cmds d CmdDone=180320,"f