The EVSE has known issues with two things (see my "diary" below

):
1) Excess heat: Best to NOT leave the cord tight wrapped as it comes from the dealer, rather loosen up the cord and loosely hang it over itself in larger loops to let the unit and cord better dissipate heat.
2) "Sponge" effect that can lead to water seepeage/intrusion into the "cracks" inside the EVSE: So another reason to not let rain, dew, etc collect on the tightly wrapped cord. I cover it with bubble wrap in rain now, just in case!
Keep in mind the EVSE has a 3 yr warranty so don't let dealer make you pay if it goes bad before 3 years, insist on a brand new or refurbished replacement. I sure wish I had two of them though, never want to be without ability to charge, talk about anxiety! lol
...
I used my 1st one every workday for 6 months, outside all day rain or shine and one day it failed (blackout) upon arriving home. It may have been water intrusion...it also got a bit "dirty" from various opp charges...I had been letting the cord be "loosely uncoiled" because I used it some much, and also noticed how much the tightly wrapped cord trapped excessive heat (in summer) and was afraid it might "burn up.
So got a replacement form the dealer and determined to "take better care" of this one, NOT uncoiling it as temps were cooler, and I started using a neatly rolled up extension cord dispenser for opp charges.
Then after only 2 months I used my 2nd one on a wet day at work I cam out to find the tightly coiled cord had acted like a "sponge" and the EVSE was quite wet. Didn't think much, and shook off the excess water.
But again upon arriving home, a problem. This time the right side light blinked red.
Eventually (in about 6 hrs) the unit (miraculously) "dried out" and started working normally again.
So beware of excess heat and the "sponge effect".