My control system has detected a no read (85) on a DS18B20 temp sensor, however if I look at it via owhttpd I can see temperature, temperature11 and temperature12, but 85 for fasttemp, temperature9 and temperature10.

How can that happen?  The sensor had been working OK.  I am running 3.2p3 on a Raspberry Pi

Here is what I see


 uncached/Boiler_Flow

------------------------------------------------------------------------
|*up*| <http://pi-solar:2121/uncached/>   directory
*address*       28C0A9A1040000F9
*alias*         

*crc8*  F9
*errata*        errata <http://pi-solar:2121/uncached/Boiler_Flow/errata>
*family*        28
*fasttemp*      85
*id*    C0A9A1040000
*latesttemp*    85
*locator*       FFFFFFFFFFFFFFFF
*power*         YES (1)
*r_address*     F9000004A1A9C028
*r_id*  000004A1A9C0
*r_locator*     FFFFFFFFFFFFFFFF
*scratchpad*    

50054B467FFF0C101C

*temperature*   66.375
*temperature10*         85
*temperature11*         66.375
*temperature12*         66.375
*temperature9*  85
*temphigh*      

*templow*       

*tempres*       

*type*  DS18B20

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