33 chain=0 msg="is_temp_return @ design 110 valid return nun.+ time="2025-04-29
12:28:28" level=error pid=24033 chain=0 error="asic num error" msg="detected asic num less than design(0<110)"
time="2025-04-29 12:28:28"
level=notice pid=24033 chain=0 msg="detect chip num 0 design num 110"
time="2025-04-29 12:28:29"
level=notice pid=24033 chain=0 msg="is_temp_return @ design 110 valid return_num:*
time="2825-84-29 12:28:32"
level=error pid=24033 chain=0 error="asic num error" msg="detected asic num less than design(0<110)*
time="2025-04-29 12:28:32"
level=notice pid=24033 chain=0 msg="detect chip num ® design num 110"
time="2025-04-2912:28:33"
level=notice pid=24033 chain=0 msg="is_temp_return 0 design
time="2025-84-29 12:28:36"
level=error pid=24033 chain=0 error="asic num error" msg="detected asic num less
time="2025-84-29 12:28:36"
level=notice pid=24033 chain=0 msg="detect chip num 0 design num 110"
time="2025-84-29
12:28:36 level=error pid=24033 chain=0 msg="failed getting chip temp"
time="2025-04-29
12:28:36" level=fatal pid=24033 chain=0 msg="read no sensor chip temp
time="2025-04-29 12:28:36"
level=fatal pid=24033 chain=® msg="uneffective temp exceed limit (3), uneffective_value_count = 4!"
time="2025-04-29 12:28:36" level=notice pid=24033 chain=0 msg="chain 0, chip temperature array:
-64
-64 -64 -64 -64 -64 -64 -64 -64 -64 -64
NE


This log was from back when I started the 4th one in the miner room, I feel like it threw off the airflow balance.
Only 1 random one out of the 4 would turn off and 3 would remain running at a stable level.
(So for example could be miner number 2 or miner number 3, the problem isn’t specifically with 1 of the miners.)

Thanks for your reply, would a voltage issue cause the fans speed to increase resulting higher temps then resulting in fault coming up? I believe I’m still under the 80% rule though.

I have an 100amp fuse box, with 4 miners running it draws at most 70amp I believe.

The miners are here in this (3Metre x 2Metre) room. Pictures shows 3 but I have 4.

Excuse the wooden platforms underneath the miners, I have a proper rack set up now.

I have these air gap vents in the basement entrance door
and same size whole 40x40 in a brick wall next to the door.

Distance from the green entrance door to the miner room in the back is about 6-7metres.

All doors are open to allow air to flow into the miner room.
I even tried running 2x 300cfm fans blowing towards the entrance of the miner room. Around 3metres away.
Didn’t have ducks to actually aim it into the room.

Did you manage to find a solution?
I’m in a similar dilemma!

I have 2 and 2 connected, the 2 on the right work perfect, as so for the third on the left, but with the fourth one connected, any random 1 miner will go offline. (My guess is lack of air in). The ducts run 5 metres to the exit holes.

I’d want to get some advice and confirmation before I start dishing out money on extra fans etc. hoping that it will be a definite resolution.

I have a 230v supply - 100amp panel (UK) - each miner has its own 20amp breaker/fuse with a 16amp commando socket c19 power cable.

Miner intake temps are between 55-58, outlet temps are 76-79.

I have 4x L9 (17gh) I managed to get 3 of them working,

When the fourth one is turned one it’s like a random pick out of the 4 as to which one will overheat and go offline.
Exhaust ducts are pulled outside with an extraction fan.
I believe there is not enough airflow coming in into the miner room in the basement.

Which fan specs would be satisfactory enough to feed 4x L9’s airflow?
For example would a 10” fan (1130m3h) blowing air into the miner room do the job?

Thanks

I have a 230v supply - 100amp panel (UK) - each miner has its own 20amp breaker/fuse with a 16amp commando socket c19 power cable.

Miner intake temps are between 55-58, outlet temps are 76-79.

I managed to get 3 of them working, I have an additional fourth one now.

When the fourth one is turned one it’s like a random pick out of the 4 as to which one will overheat and go offline. I believe there is not enough airflow coming in.

Which fan specs would be satisfactory enough to feed 4x L9’s airflow?
For example would a 10” fan (1130m3h) blowing air into the miner room do the job?

Thanks

Hi guys first post here hopefully you can help me. I have 3x L9’s in my fully brick walled basement, they are located in a back room 3mx2m with intake and exhaust shrouds.

Intake shrouds have a filter and I have an AC in that room to keep it cool (generally stays around avrg 24 degrees C).

Exhaust shrouds have a duct going through the wall of the mining room into another 5mx15m room (where the entrance door is at the front).

I have a 1070m3h rated fan extracting hot air, but not ducted to outside, (main basement entrance door has 75cmx75cm grills) and have an intake fan rated 1500m3h not currently set up but I plan for it to blow air into the 5mx15m room (not into the mining room).

The 2 rooms are divided with a wall & door, (door left open). So the front door and the back mining room distance is more than 15m apart.

I have had troubles with high rpm fan speeds and overheating causing the machines to fault. Can someone advise me on the correct set up, for example, must the extraction fan be ducted to go outside the front door? Must the intake duct reach the actually mining room? Can I attach a 3 way T piece to the extraction ducts directly onto the exhaust shrouds?

I have tried running all 3 with the door open aswell however they fault (runs smoothly with 1). Is the airflow not right, is that what the problem is?

I hope I explained myself and haven’t caused any confusion, if so please fire away and I will answer any questions. I will try upload a floor layout plan to make it clearer to understand. Any suggestions on the correct set up will be a life saver for me. Thank you in advance for your contributions.