Diminishing Hash Rate Over Time

[shitmexanon]

Hello all

Have a Canaan AvalonMiner 1166 Pro that has been losing about ~0.1TH/s per day. The boards are not overheating (62° C, 65° C, 67° C,), and the fan speeds remain under 60% (~4500 RPM). These temperature/fan-speed conditions have remained fairly constant for over a month but now the hash rate seems to be slowly but consistently decreasing. I am not clear as to what could be causing this behavior. The ASIC was advertised to get 81 TH/s, but really never performed above 79 TH/s when I first got it. For months it performed in the 76-78 range and now is around 73.6 TH/s and decreasing with each passing day.

Any thoughts? Actions I can take? Should the boards vary that much in temperature?

Thank you

[BitMaxz]

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?

[philipma1957]

Is it clean. A piece of dirt could cause a single hot chip.

[shitmexanon]

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.

Code:

{'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}

[foad_2005]

Hello Everyone
I had the same issue with 1166 pro-81TH but from yesterday, my miner keeps rebooting itself. Can anyone help me to diagnose the problem?

Here is the api log:

###{'STATUS':[{'STATUS':'S','When':53,'Code':11,'Msg':'Summary','Description':'cgminer 4.11.1'}],'SUMMARY':[{'Elapsed':276,'MHS av':61053379.53,'MHS 30s':63606227.08,'MHS 1m':62884200.59,'MHS 5m':37313624.92,'MHS 15m':16187235.59,'Found Blocks':0,'Getworks':26,'Accepted':177,'Rejected':4,'Hardware Errors':15,'Utility':38.43,'Discarded':940198,'Stale':3,'Get Failures':0,'Local Work':7735,'Remote Failures':0,'Network Blocks':1,'Total MH':16791741217.0000,'Work Utility':856087.20,'Difficulty Accepted':3588096.00000000,'Difficulty Rejected':32768.00000000,'Difficulty Stale':0.00000000,'Best Share':191846833,'Device Hardware%':0.0004,'Device Rejected%':0.8310,'Pool Rejected%':0.9050,'Pool Stale%':0.0000,'Last getwork':0}
###{'STATUS':[{'STATUS':'S','When':53,'Code':70,'Msg':'CGMiner stats','Description':'cgminer 4.11.1'}],'STATS':[{'STATS':0,'ID':'AVA100','Elapsed':277,'Calls':0,'Wait':0.000000,'Max':0.000000,'Min':99999999.000000,'MM ID0':'Ver[1166Pro-81-21042001_4ec6bb0_61407fa] DNA[020100000e18b211] MEMFREE[1207440.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 3 ] Elapsed[277] BOOTBY[0x01.00000000] LW[262842] MH[0 13 2] HW[15] DH[4.343%] Temp[29] TMax[113] TAvg[63] Fan1[2570] Fan2[2570] Fan3[2594] Fan4[2602] FanR[33%] Vo[317] PS[0 1212 1268 200 2532 1268] PLL0[3515 457 857 9091] PLL1[5435 404 659 7422] PLL2[2587 526 911 9896] GHSspd[66537.80] DHspd[4.277%] GHSmm[69654.08] GHSavg[61016.77] WU[852394.42] Freq[416.99] Led[0] MGHS[20122.38 19171.72 21722.67] MTmax[100 113 86] MTavg[66 62 62] TA[360] Core[A3201] PING[144] POWS[0] HASHS[0 0 0] POOLS[0] SoftOFF[0] ECHU[0 0 0] ECMM[4] SF0[376 396 416 436] SF1[376 396 416 436] SF2[376 396 416 436] PVT_T0[ 66 69 66 71 69 69 64 68 73 74 70 65 65 68 77 79 71 66 65 71 78 72 68 66 63 66 74 70 67 67 71 66 69 70 70 67 65 89 91 69 69 66 64 66 68 69 64 64 63 63 66 62 64 63 60 63 63 61 63 63 59 60 58 62 62 62 61 63 60 64 61 63 64 62 66 69 64 65 64 67 69 72 64 64 62 81 64 66 64 62 62 64 64 63 64 64 64 62 66 70 66 67 66 65 71 69 64 64 65 64 66 65 66 63 66 64 67 100 66 64] PVT_T1[ 59 61 58 66 60 60 61 61 66 65 64 59 60 65 66 64 64 64 62 66 73 72 69 66 63 68 74 71 67 62 60 66 72 71 65 64 62 64 74 73 113 61 63 63 71 64 61 60 58 63 66 70 59 58 55 60 62 58 57 58 55 58 56 56 54 55 57 54 58 61 56 56 56 60 62 65 62 55 62 63 66 64 62 62 60 64 64 61 62 61 61 62 65 62 60 62 58 60 65 63 59 62 61 60 62 63 57 58 60 59 62 59 61 58 58 57 63 59 59 59] PVT_T2[ 63 64 63 62 64 64 64 65 67 67 64 61 63 65 68 69 65 63 64 65 68 70 63 62 61 67 70 66 65 60 62 63 68 67 66 62 62 65 69 69 65 63 62 64 67 66 66 59 59 61 63 60 61 62 61 60 60 60 60 61 58 58 58 56 59 59 57 60 61 76 56 59 60 59 56 59 61 58 61 61 63 56 62 64 61 60 61 59 60 59 61 63 60 61 61 60 59 61 60 62 86 59 63 62 60 62 60 58 61 59 61 60 61 59 65 62 62 60 62 63] PVT_V0[295 299 298 305 304 303 287 291 291 299 292 296 297 300 294 294 295 296 290 290 287 286 287 287 286 286 286 295 293 292 294 291 290 294 296 292 293 306 315 285 288 287 291 295 298 292 295 295 301 301 296 298 297 298 303 305 302 296 298 300 303 302 300 300 304 301 304 302 305 309 310 307 301 300 303 300 302 303 298 296 297 295 301 300 295 309 295 291 288 290 289 292 291 293 298 294 292 296 296 292 295 295 292 294 295 293 296 296 292 293 297 292 293 295 297 294 297 324 301 302] PVT_V1[307 313 316 307 309 310 309 311 310 305 306 309 302 302 302 306 306 309 301 299 297 289 286 287 291 290 292 289 290 288 289 287 293 294 291 294 288 286 285 290 309 286 291 295 294 293 294 292 307 307 305 307 300 301 305 308 303 311 314 314 310 310 307 303 306 303 310 310 311 300 302 303 307 305 305 303 304 305 289 290 291 293 297 298 288 287 290 290 286 287 288 287 286 286 287 287 287 285 285 286 283 286 287 289 287 287 289 289 291 291 288 290 287 286 297 293 291 295 292 293] PVT_V2[295 299 302 297 302 300 298 295 297 295 295 294 299 296 299 290 289 288 292 290 287 292 296 298 294 294 292 291 293 294 297 299 302 287 291 293 292 291 289 290 295 295 292 290 295 293 293 294 295 293 293 304 302 302 294 290 289 294 295 302 305 300 299 303 302 301 306 307 305 303 294 294 292 294 291 292 286 291 298 299 297 297 295 293 290 294 293 302 303 303 302 301 303 299 299 301 297 298 295 298 319 300 290 295 293 297 301 301 301 300 300 299 301 302 294 293 298 296 300 302] MW[90473 90391 90442] MW0[9 14 3 13 7 8 11 12 11 8 10 11 6 14 7 4 8 14 13 15 14 2 10 12 10 13 12 5 6 8 9 16 8 7 14 7 11 13 10 7 10 6 16 7 12 14 13 9 8 6 14 10 12 8 10 17 12 14 11 15 14 10 10 18 15 11 8 10 8 12 12 8 7 23 11 10 15 9 16 13 16 13 8 13 13 7 14 3 10 11 5 14 13 7 10 15 7 12 7 15 9 10 15 9 18 13 10 6 12 7 11 5 12 8 10 11 11 6 9 11] MW1[15 9 18 9 8 9 11 13 11 19 9 14 12 7 12 7 13 14 14 8 16 9 12 11 4 11 14 14 6 7 8 6 9 7 10 8 7 8 9 14 8 3 9 15 11 8 11 4 12 18 7 10 9 18 12 10 13 16 7 7 15 14 6 11 14 17 12 6 10 16 11 11 9 12 6 13 7 11 18 9 11 6 15 10 8 6 7 1 9 12 8 6 8 7 10 10 10 8 4 6 6 7 10 10 3 8 11 7 4 9 14 7 10 11 20 13 11 10 6 14] MW2[11 20 14 6 13 23 13 10 9 14 9 15 14 10 13 6 14 8 11 9 13 12 13 15 14 11 10 17 15 10 12 15 13 9 5 9 13 9 6 11 19 16 15 10 10 10 8 10 10 12 7 10 12 12 12 16 12 12 7 17 9 10 12 14 9 5 13 17 15 12 15 10 7 14 10 12 13 10 10 12 11 10 11 20 9 14 7 10 12 5 9 8 12 13 7 9 12 13 9 10 14 13 11 9 15 7 15 12 15 8 8 12 8 7 13 21 5 7 12 8] 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 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] 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 0 0] POW_I2C[OK] FACOPTS0[] FACOPTS1[] ATAOPTS0[--avalon10-freq 376:396:416:436 --avalon10-voltage-level 42 ] ATAOPTS1[--avalon10-freq 472:492:512:532 --avalon10-voltage-level 53 ] ADJ[1] COP[0 0 0] MPO[3200] MVL[87] ATABD0[472 492 512 532] ATABD1[472 492 512 532] ATABD2[472 492 512 532] WORKMODE[0]','MM Count':1,'Smart Speed':1,'Voltage Level Offset':0,'Nonce Mask':25}

[HagssFIN]

The ECMM gives you a number 4
(Error Code MM board).

Maybe the MM board (control board) is loosely connected to the hash boards?
Or maybe the MM board is damaged?

Do you have another MM board to try?

You can find the log text description guide here https://canaan.io/wp-content/uploads/2020/03/log-Description.pdf
Other Canaan documents: https://canaan.io/service/447

[shitmexanon]

The ECMM gives you a number 4
(Error Code MM board).

Maybe the MM board (control board) is loosely connected to the hash boards?
Or maybe the MM board is damaged?

Do you have another MM board to try?

You can find the log text description guide here https://canaan.io/wp-content/uploads/2020/03/log-Description.pdf
Other Canaan documents: https://canaan.io/service/447

Reading the doc on ECMM:

When ECMM

• , it means that the MM board is in normal state. When ECMM [1], it means that the MM board may have problems, or it may have poor contact with the hash board. The specific problem of the hash board can be judged by the value returned below. When Echu displays 0 or 512, it means normal. If Echu displays 513, it means abnormal.

What does 4 mean here? Seems like not specified? I don;t have any extra spare parts

[HagssFIN]

I could not find meaning for number 4.

Can you try tightening the connection between MM board and the hash boards?
Just in case if it is loose after transport or something.

[shitmexanon]

I'm not sure what MMboard stands for or even which part of the miner that is. Internet searching hasn't been helpful for this term unfortuantely.

[HagssFIN]

The help is more close than you think, have a look at my Avalon troubleshooting guide https://bitcointalk.org/index.php?topic=3224256

It's the control board for your hashboards.

[shitmexanon]

perfect thank you. Do you suggest I just un-plug and replug the ribbon cable, tighten any screws on the MM board, and ensure the hashboards are slotted in well again? Anything else?

[HagssFIN]

Yes, that's pretty much all there is to it.

[mikeywith]

The ASIC was advertised to get 81 TH/s, but really never performed above 79 TH/s when I first got it. For months it performed in the 76-78 range and now is around 73.6 TH/s and decreasing with each passing day.

I think most asic miners are rated at +-5% so 3-4TH missing on an 81TH miner is pretty normal, what's not normal is the diminishing hash rate, this is a very strange problem, I believe your miner is auto-tuning itself and for some reason, it doesn't see the miner at a stable state with the current hashrate so it tunes the frequency to a lower figure just to keep the miner stable.

I don't own a similar gear but speaking from experience with other miners, the tuning part can go wrong at times, so try to flash a different firmware just to make sure the firmware isn't falling at tunning the hash boards.

[BitMaxz]

Hello Everyone
I had the same issue with 1166 pro-81TH but from yesterday, my miner keeps rebooting itself. Can anyone help me to diagnose the problem?

 

Yes, both of you have the same ECMM[4] which is abnormal but we do not sure what is ECMM[4] you can't find that number on their description logs.

However, this is what I noticed and found this under your logs WORKMODE[0] which is it's running at normal mode it means the hashrate drop to normal hashrate maybe around 50-60TH/s

What I would like to suggest is to force the miner to the high-performance mode you can find it under configuration then work mode or use the FMS app to force it to high performance.

[shitmexanon]

Been a few weeks since I last updated here. I have not yet taken the machine apart to ensure all wire connections are snug and screws tightened. Since then I have notice the miner still restarting itself about once every 3 days, even in cold easter (<50 degrees F). Today for the first time it turned off and simple did not restart itself. I had to manually unplug and replug it. Looking at the logs the ECMM[4] is still showing and this error code is not documented in their manual. Additionally I noticed the HW code frequesntly changing with values ranging from 97 to 119 for the few minutes I monitored the logs. The number only increased over time. The manual simple says HW means Hardware Error but provides no guidance on the codes.

If anyone has any idea what is going on here please do advise. Thank you.

[BitMaxz]

If the logs you have are still the same as your previous logs above then I suspected that some chip temp is fluctuating above 85c. Since you have a large number of HW or hardware errors some chips are overheating and the hashboard will automatically disconnect if it happens then you will get ECMM[4] because it's disconnected automatically for protection and it will attempt to restart.

Another thing that I noticed from your previous logs is that the fan speed is not stable.
What I would like to suggest is to try to set the fan speed to at least 80% or 90% and let see if it will run stable for long. Just try even you have low room temp.

To set the fan speed you must have the FMS tool and then go to diagnostic and put this command below

Code:

[b][{"command":"ascset","parameter":"0,fan-spd,90"}] [/b]

Fan-spd,90 it's a fan speed with 90% you can replace it with 80% or 100% to try if it fixes the issue.


Another solution that I would like you to try is to use the aging you can find it on the FMS tool along with the Diagnose it can calibrate all ASIC chips.

[shitmexanon]

Interesting. I will have to get a Windows machine in order to get FMS running. Likely a weekend project. The ran speed is and has been always fluctuating up and down about every 30 seconds or so. The rooms ambient air is in the 80 degree Fahrenheit range but the machine is drawing outside cool air under 50 degrees Fahrenheit. I would like to get FMS going and set a fixed fan speed.

[NotFuzzyWarm]

You would be better off having the down right cold outside air mix with the room air and having the miners draw in the now cooler room air. Thing is miners do not like to run at chip temps much below 60C (140F). Reason is that being a power device, high temps are a natural part of the territory and semiconductors behave differently as temp rises. That is why miners have a pre-heat cycle before really starting to ramp up to full speed.

Ja the miner will try to control the temp by adjusting fan speed but that relies on Canaan properly tuning the temp/speed control loop... Point is the miners may just be too cold.

[shitmexanon]

If the logs you have are still the same as your previous logs above then I suspected that some chip temp is fluctuating above 85c. Since you have a large number of HW or hardware errors some chips are overheating and the hashboard will automatically disconnect if it happens then you will get ECMM[4] because it's disconnected automatically for protection and it will attempt to restart.

Another thing that I noticed from your previous logs is that the fan speed is not stable.
What I would like to suggest is to try to set the fan speed to at least 80% or 90% and let see if it will run stable for long. Just try even you have low room temp.

To set the fan speed you must have the FMS tool and then go to diagnostic and put this command below

Code:

[b][{"command":"ascset","parameter":"0,fan-spd,90"}] [/b]

Fan-spd,90 it's a fan speed with 90% you can replace it with 80% or 100% to try if it fixes the issue.


Another solution that I would like you to try is to use the aging you can find it on the FMS tool along with the Diagnose it can calibrate all ASIC chips.

I got FMS installed. You suggested using aging which I do not see in the tool (I have tried V2.3.3 and V2.1.0). Do you know where I can find a list of commands or manual to know how to make the commands for the diagnose console? Doesnt seem to be in their manual. Thank you.

[BitMaxz]

I got FMS installed. You suggested using aging which I do not see in the tool (I have tried V2.3.3 and V2.1.0). Do you know where I can find a list of commands or manual to know how to make the commands for the diagnose console? Doesnt seem to be in their manual. Thank you.

Other versions of FMS don't have an aging button there are two FMS v2.3.3 the one is the app version that doesn't have an aging button. You can find that button in the FMS v2.3.3(batch version) you can download it on Canaan technical support.

Or check this link below to download the batch version.
- https://canaan.io/wp-content/uploads/2020/03/FMS_V2.3.3_Windows.zip