Actions when heater fault detection occurs

[ELAD]

Hello,
I'm trying to conducted a test for M570.
I disconnected the E0 wires in the middle of a print to check its behaviour after heater fault had been detected. Nothing happens - the printer continues printing till I press on the pop-up window at Duet web interface.
What do I do wrong?

Here is a copy-paste of the relevant part at my config.g -

; Heaters
M140 H-1 ; Disable heated bed
M305 P1 T100000 B4725 C7.060000e-8 R4700 ; Set thermistor + ADC parameters for heater 1
M143 H1 S300 ; Set temperature limit for heater 1 to 300C
M570 H1 P15 T15 S86400 ; Resume after thermal issue - 24 hours maximum

I read in this topic - https://forum.duet3d.com/topic/3156/how-should-the-firmware-respond-to-a-heater-fault
that "2. Execute pause.g to move the head away from the print. This will create a resurrect.g file."

How do I execute a pause?

On another topic,
I have a 7" LCD screen which without any preliminary signs has ceased to function.
It is connected by a regular motor cable, not by a ribbon cable, and was working fluently till last day. The length of the cable is approximately 1.5 metres (5 feet). I connected another Duet LCD screen and it worked fine.
How can I examine it prior to contacting the warranty team?

Hope my English is understandable enough,
Best regards,
Elad