5 out of 10 SP30's seem to have failed after about 10 hours with the new firmware 2.5.6

Intake air temps have also dropped down to about 5-10c

CGminer status is : Not Running
Minergate is: Running

all loops are showing disabled.

LOOP[0] OFF ((null))
0: disabled ((null))
1: disabled ((null))
2: disabled ((null))

Have tried rebooting and power cycling. do these things not like the cold?

any suggestions?