After a deicing cycle is complete my pavement still has some snow on it. Why?
You should try adjusting your Delay Off cycle longer to allow the deicing system to clear all of the snow and dry the surface. The DelayOff adjustment 12 o’clock position is 30 minutes moving to 90 minutes at 3 o’clock.
If this does not cure the problem or if snow removal is patchy, check to see if the deicing system itself is working properly.