@bearer am i right to say usign external fuse like this? can i still print by bypassing it temporarily? thanks a ton!

@bearer said in Error: Temperature reading fault on heater 0:

configured

@bearer OMG, E0 works!

@bearer said in Error: Temperature reading fault on heater 0:

vssa directly to ground

@bearer If i did it correctly, It still shows the same error 2000'C

@bearer Thanks, i am still uncertain about the vssa fuse. if you see the image here, https://ibb.co/TYb2MNS i got reading 90.9K. i can now confirm board is v1.01.

@bearer said in Error: Temperature reading fault on heater 0:

not connected to the board wht do you get?

@bearer , i got reading 80.3K

@dc42 @bearer

i have tried to disconnect all wires to isolate the issue. i am plugging in the extruder heaters e1, extruder thermistors, bed thermistor, heated bed still showing the same error. do you think is should get a new board?

@bearer said in Error: Temperature reading fault on heater 0:

no, it should measure as close to 0 ohm when its ok, but it can be tricky to pierce oxide layer on old solder joints. You could repeat the measurement between Vin- and both pins on the thermistor input (one of them should be close to 0 ohm if the fuse ok)

Looks to be the right part, but smaller on rev 1.2.

Thanks @bearer , in this case i don't think my vssa fuse is blown.

Hi @bearer

It should be 1.02. i searched around and found the vssa. assumed i am on the right fuse, the multimeter doesn't give me any reading. do i need to connect to power? thanks again!

https://ibb.co/TYb2MNS

@bearer said in Error: Temperature reading fault on heater 0:

https://www.google.com/search?q=test+fuse+multimeter

Hi @bearer thanks for your reply.

I look closer to my board and found something is blown as screenshot. I am not sure if this is VSSA, can you point me to the right fuse?

https://ibb.co/3FKtpV2

Hi @dc42, i have the same issue as mentioned above. can you eleborate how can i use a multimeter to verify if i have vssa fuse blown? i am pretty sure all wiring are ok and now i am getting open circuit error message. thanks a ton!

FIRMWARE_NAME: RepRapFirmware for Duet 2 WiFi/Ethernet FIRMWARE_VERSION: 2.05.1 ELECTRONICS: Duet WiFi 1.0 or 1.01 FIRMWARE_DATE: 2020-02-09b1

@dc42 said in Heater Fault:

Yes, if your Duet is a revision 1.0 or 1.01 then with power off, use a multimeter to measure the resistance between VSSA on a thermistor pin and GND on an endstop pin. It should read no more than a few ohms. If instead it's very high, the VSSA fuse has blown, which will make all thermistors read 2000C.