avalon 1246 90th, my hashboard overheat quick.. can anybody give suggestion on why

{'STATUS':[{'STATUS':'S','When':0,'Code':11,'Msg':'Summary','Description':'cgminer 4.11.1'}],'SUMMARY':[{'Elapsed':529,'MHS av':46601349.88,'MHS 30s':47131063.41,'MHS 1m':48982806.20,'MHS 5m':40035925.45,'MHS 15m':21038401.37,'Found Blocks':0,'Getworks':54,'Accepted':1202,'Rejected':0,'Hardware Errors':0,'Utility':136.24,'Discarded':2392478,'Stale':1,'Get Failures':0,'Local Work':6986,'Remote Failures':0,'Network Blocks':1,'Total MH':24688433946.0000,'Work Utility':651516.65,'Difficulty Accepted':5403731.00000000,'Difficulty Rejected':0.00000000,'Difficulty Stale':0.00000000,'Best Share':19510404,'Device Hardware%':0.0000,'Device Rejected%':0.0000,'Pool Rejected%':0.0000,'Pool Stale%':0.0000,'Last getwork':0}]}
{'STATUS':[{'STATUS':'S','When':0,'Code':70,'Msg':'CGMiner stats','Description':'cgminer 4.11.1'}],'STATS':[{'STATS':0,'ID':'AVA100','Elapsed':530,'Calls':0,'Wait':0.000000,'Max':0.000000,'Min':99999999.000000,'MM ID0':'Ver[1246-N-90-23021601_66620f1_27c9e34] DNA[0201000084f8280f] MEMFREE[1213712.1197704] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 3 ] Elapsed[530] BOOTBY[0x01.00000000] LW[374718] MH[0 0 0] DHW[0] HW[0] DH[27.414%] Temp[39] TMax[92] TAvg[75] Fan1[2901] Fan2[2883] Fan3[2873] Fan4[2871] FanR[30%] Vo[310] PS[0 1226 1243 201 2501 1244 2675] PLL0[0 120 0 0] PLL1[101 5 24 15230] PLL2[61 1 21 15277] GHSspd[50356.55] DHspd[0.267%] GHSmm[50584.90] GHSavg[46559.55] WU[650429.46] Freq[274.44] Led[0] MGHS[2744.41 21922.08 21893.06] MTmax[60 92 88] MTavg[56 85 83] TA[360] Core[A3200] PING[72] POWS[0] HASHS[0 0 0] POOLS[0] SoftOFF[0] ECHU[0 0 0] ECMM[0] SF0[354 374 394 412] SF1[354 374 394 412] SF2[354 374 394 412] PVT_T0[ 54 55 50 59 58 57 59 56 57 59 56 57 58 56 57 56 58 55 58 59 57 53 57 56 57 59 57 57 57 56 54 55 57 58 58 59 57 59 58 56 56 57 55 56 58 56 56 58 54 56 53 54 54 53 54 55 50 53 54 53 50 54 53 54 53 56 52 54 54 57 55 56 54 56 55 55 56 54 56 55 57 55 55 56 57 55 53 55 56 58 56 57 57 59 57 57 55 56 56 58 56 58 57 57 53 55 54 57 56 60 56 54 57 54 56 58 57 51 54 54] PVT_T1[ 85 87 88 90 90 88 86 89 89 90 88 87 88 87 90 89 89 84 89 87 91 92 90 87 88 90 91 91 89 88 86 90 90 90 87 87 87 87 90 90 86 83 83 86 86 87 84 79 83 82 85 82 84 79 81 83 84 79 80 78 74 78 76 76 75 79 81 81 78 80 79 82 82 81 80 85 82 82 81 83 81 83 83 82 84 83 83 82 83 81 86 85 82 85 84 86 82 82 83 85 83 85 86 87 83 82 83 85 85 86 83 83 83 81 86 86 84 85 85 91] PVT_T2[ 83 85 84 86 87 87 87 85 85 87 86 82 83 86 86 87 86 84 84 85 87 87 87 84 84 84 87 88 87 83 83 87 88 84 87 83 85 85 87 85 83 82 80 85 85 84 83 82 83 81 81 82 82 79 78 79 82 80 80 79 74 75 77 80 79 78 80 80 77 79 79 79 74 79 77 80 79 81 79 78 81 79 79 80 79 83 77 81 79 81 82 82 79 82 83 79 82 82 80 83 82 82 82 82 83 81 82 81 83 81 82 79 82 81 83 86 79 80 80 85] PVT_V0[292 293 298 298 296 294 297 297 296 291 291 290 297 294 293 288 287 290 291 290 290 292 288 290 295 292 292 287 290 291 285 288 290 293 292 296 295 292 292 287 289 290 290 289 290 295 299 296 290 290 291 295 293 295 298 298 298 293 297 301 302 298 294 297 295 294 294 292 293 291 292 290 292 293 289 287 286 287 293 292 292 295 296 297 291 292 291 284 285 283 294 291 293 295 295 294 292 292 292 291 292 292 289 287 288 290 290 290 290 293 292 292 290 295 292 295 298 292 292 294] PVT_V1[282 285 288 294 291 291 286 283 283 282 284 285 283 282 283 278 281 279 280 279 281 278 277 278 278 278 275 278 281 278 277 276 275 280 277 281 283 281 283 280 281 281 282 284 283 288 286 290 291 290 288 289 289 288 292 292 289 294 298 301 304 300 296 299 299 301 298 298 300 301 297 299 296 295 297 286 289 290 291 292 293 294 293 295 290 289 289 283 283 285 287 286 286 290 287 289 286 287 287 287 285 287 289 289 289 289 290 290 292 293 292 282 282 285 292 291 290 287 287 289] PVT_V2[284 285 289 286 283 283 281 281 281 283 283 285 278 279 278 277 277 279 279 279 279 281 282 278 282 279 279 281 280 281 284 285 284 280 279 281 285 286 283 279 280 280 282 281 284 295 294 297 285 282 282 295 293 294 293 296 297 294 301 303 300 294 296 299 298 302 297 293 294 293 292 294 287 289 290 290 290 292 292 292 297 290 291 290 296 297 298 293 293 293 292 293 292 295 295 296 296 293 292 295 293 295 288 289 289 283 285 288 291 290 293 292 294 295 292 294 297 292 293 297] MW[124981 124914 124941] MW0[3 0 1 4 1 0 3 2 0 1 2 3 2 0 3 2 2 3 4 2 3 5 2 1 3 0 0 4 3 2 1 1 3 3 1 2 4 0 2 1 2 3 1 2 1 2 0 1 2 3 0 1 4 1 1 1 1 0 1 3 0 1 3 2 3 2 2 1 1 1 2 2 0 0 3 0 2 2 3 2 0 1 2 5 2 4 2 1 2 1 5 3 1 2 1 0 2 1 2 1 1 1 2 3 0 1 2 1 2 2 2 3 2 2 1 3 1 1 4 3] MW1[9 7 19 14 14 11 13 11 13 14 14 16 10 10 13 22 23 11 16 13 13 10 13 17 13 11 14 11 20 9 17 14 15 9 9 17 14 12 7 10 12 18 18 9 15 13 17 14 14 16 14 15 16 12 20 22 16 13 14 21 8 10 12 16 13 10 15 13 14 12 10 13 10 16 11 7 15 11 22 9 20 14 15 11 21 14 16 11 13 11 16 16 20 17 13 20 11 15 20 9 9 8 11 13 12 9 11 13 15 15 13 11 13 17 10 16 10 12 18 13] MW2[8 12 15 13 14 16 8 16 22 13 7 12 11 16 6 19 10 15 13 15 11 14 21 15 16 13 19 16 13 13 11 15 16 7 13 10 14 16 15 13 21 22 15 14 21 21 14 14 11 13 14 15 14 19 19 13 7 11 10 13 10 14 17 18 13 11 11 14 16 14 15 14 9 12 13 18 12 10 18 15 7 12 14 11 22 16 11 18 16 11 12 6 11 19 12 14 12 12 15 16 10 19 14 16 11 11 11 11 14 10 10 15 16 12 11 13 17 12 20 6] 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[333143 0 0] POW_I2C[OK] FACOPTS0[] FACOPTS1[] FACOPTS2[] ATAOPTS0[--avalon10-freq 354:374:394:412 --avalon10-voltage-level 36 ] ATAOPTS1[--avalon10-freq 444:464:484:504 --avalon10-voltage-level 45 ] ATAOPTS2[--avalon10-freq 444:464:484:504 --avalon10-voltage-level 45 --power-level 0] ADJ[1] RPD[0] COP[0 0 0] MPO[3250] MVL[87] ATABD0[444 464 484 504] ATABD1[444 464 484 504] ATABD2[444 464 484 504] WORKMODE[0]','MM Count':1,'Smart Speed':1,'Voltage Level Offset':0,'Nonce Mask':25}]}