Host reads second nozzle at constant, incorrect temperature.

Earth42

When attempting to use a second extruder, the second extruder displays a constant temperature of 100°C. Temperature can be adjusted manually from the board itself, but Repetier Host always displays a temp of 100.

Earth42

In addition, m105 will not return temperatures for either nozzle.

Repetier

M105 responses are hidden by default. Enable ACK then you might see them.

What firmware are you using and what is the M105 response? You can enable logging in host (Preferences->basic) and in any case you see the answer there.

Earth42

M105 and ACK seem to display the correct values.

For example, when heater 1 is set to 40C and heater 2 is disconnected: the return is

13:28:49.924 : ok T:39.90 /40.00 B:-27.00 /0.00 T0:39.90 /40.00 T1:-27.00 /0.00 @:10 B@:0 @0:10 @1:0

But the control panel still displays heater 2 as being at 100C.

I'm using Marlin 1.1.6