Err: Mintemp - Starts Printing fine but then error

Vertex 3D Printer Vertex - Wiring and electronics
1

Hi

I am getting a mintemp error.

I have a dual head. It has been printing fine for some months.

When I set temp, the head heats up, printing starts and then the set temp (one on the right) drops to 0 and error is thrown.

I changed the ABS printing temp from 215 to 220. Same problem.

The thermistor reads the temp OK but the set temp bugs out,

I loaded new firmware, problem persists.

HELP!

2

There must be a bad contact somewhere between the controller board and your thermistor. If the contact is lost event for a tenth of a second the error will be triggered. check the wiring and the plugs and the thermistor itself (broken wire).

3

Check the screws for the thermistor.
Mine came loose on the heater block and caused a problem.

4

[quote=“Wrong Way”] screws [/quote]Hey it’s the K8400 not the K8200 there’s no screws holding the thermistor…

5

The screws for the wire connections for the thermistor on top of the print head (green connectors)
There are 6 on each side 2 for the fan 2 for the thermistor (middle) and 2 for the heating element.
I have the K8200 and the K8400.