Ultimaker 2, bed temp error issue

[Viggoman 0]

I'm experiencing  a bed temp error message after e few minutes of printing. It seems to happen at more or less the same spot every time.

 

Recycling the power clears the error, but it repeats after a few minutes.

 

I have had a bed temp issue a few month back and followed the trouble shooting instructions, even replaced the main board. But it wasn't until I checked the wire connector at the bed it got solved.

 

I have tried this out again to no avail. 

 

Any tips tracing the culprit of this?

 

Thanks