Have you tried to reboot the miner? Let see if it could fix the issue.
If not then post the API logs here and don't forget to put them on the "insert tag" with a # icon or use pastebin.com and paste the URL here.
The hashboard temp sensor is different so maybe we can see the real temp of the chip under PVT_T0, T1, T2, and maybe one of the chips is overheating that cause this issue?
Here are the logs. In fact as I am typing this up my miner just restarted its self. It seems to do this ~1x per week, unclear why. This time was <4 days. These are the logs minutes before it just restarted.
{'STATUS':[{'STATUS':'S','When':0,'Code':11,'Msg':'Summary','Description':'cgminer 4.11.1'}],'SUMMARY':[{'Elapsed':316092,'MHS av':73574366.90,'MHS 30s':74549432.22,'MHS 1m':73857019.14,'MHS 5m':73668815.84,'MHS 15m':73656998.48,'Found Blocks':0,'Getworks':11576,'Accepted':67144,'Rejected':72,'Hardware Errors':45344,'Utility':12.75,'Discarded':929156536,'Stale':284,'Get Failures':7,'Local Work':10667051,'Remote Failures':7,'Network Blocks':526,'Total MH':23231490246315.0000,'Work Utility':1027828.51,'Difficulty Accepted':5415704598.00000000,'Difficulty Rejected':5793356.00000000,'Difficulty Stale':7965287.00000000,'Best Share':9442325237,'Device Hardware%':0.0008,'Device Rejected%':0.1070,'Pool Rejected%':0.1067,'Pool Stale%':0.1467,'Last getwork':0}
{'STATUS':[{'STATUS':'S','When':0,'Code':70,'Msg':'CGMiner stats','Description':'cgminer 4.11.1'}],'STATS':[{'STATS':0,'ID':'AVA100','Elapsed':316093,'Calls':0,'Wait':0.000000,'Max':0.000000,'Min':99999999.000000,'MM ID0':'Ver[1166Pro-81-21030201_4ec6bb0_09b1765] DNA[0201000053ecf2c7] MEMFREE[1434728.0] NETFAIL[301699 301710 301983 301993 316084 316095 300128 300188] SYSTEMSTATU[Work: In Work, Hash Board: 3 ] Elapsed[316092] BOOTBY[0x01.00000000] LW[314964030] MH[8426 9304 27614] HW[45344] DH[9.902%] Temp[23] TMax[101] TAvg[65] Fan1[4486] Fan2[4532] Fan3[4418] Fan4[4456] FanR[59%] Vo[311] PS[0 1222 1245 257 3199 1244] PLL0[8825 2657 1646 792] PLL1[8478 2872 2046 721] PLL2[10997 2266 521 136] GHSspd[74962.26] DHspd[8.413%] GHSmm[83341.10] GHSavg[73574.56] WU[1027824.73] Freq[498.93] Led[0] MGHS[25062.39 25262.79 23249.38] MTmax[101 76 72] MTavg[67 65 62] TA[360] Core[A3201] PING[28] POWS[0] HASHS[0 0 0] POOLS[0] SoftOFF[0] ECHU[0 0 0] ECMM[4] SF0[488 508 528 548] SF1[488 508 528 548] SF2[488 508 528 548] PVT_T0[ 71 72 71 71 73 73 69 72 75 76 74 74 72 71 75 76 74 72 71 75 74 73 70 70 69 68 71 71 70 68 67 70 74 76 70 66 68 72 72 75 71 64 101 69 74 73 70 65 64 69 72 64 65 64 64 67 66 65 64 62 58 61 59 60 63 60 65 61 64 61 61 60 63 63 63 63 64 63 63 62 61 63 63 66 63 64 61 64 65 64 64 66 60 63 68 63 66 65 65 66 67 67 68 68 66 69 65 68 71 69 67 63 71 67 67 69 64 64 67 69] PVT_T1[ 68 69 64 67 68 68 70 68 70 71 69 69 73 70 70 72 74 72 66 69 74 76 71 67 65 70 72 73 71 68 66 69 71 73 72 66 64 69 72 69 69 64 64 66 68 67 67 62 61 66 67 65 66 62 62 66 63 63 64 62 58 61 57 59 61 60 57 60 59 63 62 61 63 66 64 65 64 62 60 73 70 67 64 61 65 68 65 62 64 64 62 67 64 63 61 62 62 64 63 62 63 63 62 64 64 64 63 62 62 64 65 66 63 64 65 64 65 61 65 65] PVT_T2[ 64 64 66 68 68 64 65 70 69 69 69 64 64 69 68 72 70 64 66 68 68 69 68 64 63 67 65 68 68 62 61 65 68 70 66 61 62 64 67 67 67 62 62 65 66 64 64 60 58 61 65 61 61 61 58 59 57 58 59 59 55 56 55 55 57 56 56 57 59 58 59 59 58 60 58 60 61 61 60 61 59 59 61 60 59 60 59 59 62 59 59 59 60 59 61 62 60 64 61 61 64 63 65 62 62 63 64 62 63 64 63 63 64 63 64 60 62 63 64 62] PVT_V0[283 288 291 285 283 280 286 281 279 289 286 284 287 284 284 277 281 285 274 275 277 277 273 273 287 283 281 279 280 285 286 282 283 281 278 275 288 290 283 277 278 279 302 284 283 286 292 292 293 289 283 284 278 275 286 288 285 286 288 295 301 297 295 294 296 298 293 294 297 292 295 297 297 295 295 295 292 291 297 295 296 298 295 294 292 290 295 293 298 294 291 290 295 294 292 294 286 287 286 293 294 295 283 283 286 286 292 290 281 281 283 289 286 290 286 292 288 286 287 292] PVT_V1[290 291 295 294 289 286 284 283 282 285 291 289 281 283 287 289 289 286 283 286 281 287 290 292 281 280 281 281 282 282 286 285 286 290 283 287 287 289 280 280 278 280 278 281 285 286 283 287 282 285 279 291 287 290 283 284 288 289 289 298 300 295 293 293 292 297 288 295 295 286 285 291 297 294 293 301 294 283 377 352 339 290 286 278 285 288 289 285 283 286 286 286 285 291 291 287 287 285 285 283 285 285 289 289 287 283 279 281 289 290 286 285 286 287 285 285 283 290 290 294] PVT_V2[285 287 292 286 282 279 286 282 284 278 281 279 286 286 285 290 285 285 282 281 278 289 289 290 286 284 290 282 283 285 285 291 290 277 283 286 283 282 285 286 284 284 288 287 282 292 289 288 292 292 287 291 290 289 295 294 293 289 292 298 297 295 292 290 290 294 287 289 289 290 288 289 290 289 290 297 297 295 287 288 293 290 293 295 288 292 294 292 295 295 292 290 291 292 292 287 292 289 288 289 284 283 294 294 292 292 294 292 298 299 297 285 290 290 292 293 292 290 290 293] MW[104990507 104990395 104990458] MW0[14788 16226 17060 15858 15622 12398 14863 11633 15021 15822 15045 15750 14181 15609 14867 13892 13732 13583 10745 12060 14576 14646 9146 9356 15423 15605 15965 13676 15583 10564 8886 14764 14373 15531 11243 12298 15268 15334 15381 11789 8822 4914 9041 15321 9291 11711 15538 15650 15002 15492 10804 15707 14324 15202 15155 16346 15950 15484 16173 16243 16755 16777 16355 16316 16371 15980 15981 16459 17071 17757 16510 16382 16449 16725 17340 15463 16497 16229 16613 16957 16848 16108 16693 16475 16949 16085 15767 16443 16225 16383 16723 16417 16032 16164 16637 16278 15762 15713 15746 16896 16694 16402 15273 15134 15362 15400 15677 16503 15205 14941 13771 15233 15564 15707 15918 15449 16237 15957 16477 16699] MW1[15568 16105 17015 16140 15815 15563 15582 16112 16023 16041 14917 15763 15636 15904 15794 15906 15098 15279 16197 11492 10260 17031 15071 15604 9669 10384 15584 15604 12098 14169 15045 15880 15573 15171 14501 16179 16024 15249 14962 14320 15106 15564 14676 15758 15443 15721 15522 15634 15735 15722 15813 15951 16148 5513 653 1790 6099 7501 15817 16112 17632 17318 14207 15390 17154 17009 16934 16882 16443 15567 16373 16301 16295 16044 16805 16467 16327 16323 8088 17032 17210 16660 16541 15324 16145 15857 16397 16318 16459 15629 16262 15895 16026 16848 15752 16648 16173 15546 15942 15949 15500 15588 15863 16575 15879 15692 15062 15618 15965 15890 16285 16646 16240 15787 15662 15937 13531 13445 16497 17229] MW2[13693 15561 16318 15339 13964 14337 9396 15319 15415 15683 10229 12837 11927 13852 15394 13585 14870 12068 13893 13137 12805 12481 14475 13735 10761 13498 12153 12979 15098 7731 10601 14039 15251 10358 14804 9051 8108 14863 14632 11338 13514 12575 12508 12323 11295 14177 13901 15756 15383 15188 15057 14232 12717 14899 15799 16324 15201 12174 15350 15898 15623 15230 12940 11418 16465 13893 15599 12039 13222 12720 15321 15626 14539 16223 11576 14960 15877 16062 13896 13506 14940 14480 15691 13875 15088 14766 14698 14651 15269 13084 13071 16695 13086 13945 15489 14441 14417 15847 10680 6735 15734 12470 15787 15829 14338 14177 15520 15661 16005 15820 15567 12002 14497 13262 13792 15424 14119 13635 14702 15090] ASICCRC0[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] ASICCRC1[0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] ASICCRC2[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] CRC[0 1912817142 0] POW_I2C[OK] FACOPTS0[] FACOPTS1[] ATAOPTS0[--avalon10-freq 488:508:528:548 --avalon10-voltage-level 34 ] ATAOPTS1[--avalon10-freq 488:508:528:548 --avalon10-voltage-level 37 ] ADJ[1] COP[0 0 0] MPO[3200] MVL[87] ATABD0[488 508 528 548] ATABD1[488 508 528 548] ATABD2[488 508 528 548] WORKMODE[1]','MM Count':1,'Smart Speed':1,'Voltage Level Offset':0,'Nonce Mask':25}