Bed Temp Fails to Hold Temperature

[bobster316]

Basic Information:

Printer Model: Ender 3 v2
MCU / Printerboard: 4.2.7
Host / SBC Raspberry Pi 4
klippy.log
logs-20250623-074039.zip (22 Bytes)

Describe your issue:

I have started having issues with prints failing at random times, I think its related to bed temperature not being maintained. As a test i set the bed temp to 60 and it remained at that temp between the following times
07:17:11
07:25:11

Not sure what else to check and other tests which can be used to diagnose the issue.
Thanls

[EddyMI3D]

Hello @bobster316 !

@bobster316

klippy.log
logs-20250623-074039.zip (22 Bytes)

Sorry, but that one is empty.

[bobster316]

klippy.log.2025-06-18.zip (898.7 KB)

[EddyMI3D]

@bobster316

As a test i set the bed temp to 60

That test does not appear in the log.

The bed setting of 55°C in the log is quite stable.

[hcet14]

mmmhh, bobster316 said

@bobster316

As a test i set the bed temp to 60 and it remained at that temp between the following times

Don’t know

@bobster316 Was it 60°C or 55°C?

I think you may have problems with your connection of the host to the PC.

[Sineos]

As indicated by @EddyMI3D and according to the log:

• Bed temperature is according to the set target and controlled nicely.
• No heating-related errors in the log.
• Two instances of a Timeout with MCU / Lost communication with MCU error.

[hcet14]

@bobster316
Did you try another SDcard?

[bobster316]

@Sineos

Two instances of a Timeout with MCU / Lost communication with MCU error.

I will try a different MicroSD card, thanks