Posting this for a friend.
Last Thursday 2011 Honda Accord AC stopped cooling all of a sudden.
The service center found the system low on refrigerant, topped it up and ran some dye through the system. The friend used the car for a few more days before the AC stopped cooling again. The service center revisited it and determined that the evaporator had sprung a leak.
So they replaced the evaporator, receiver and expansion valve and refilled the system with refrigerant.
The AC system works for some time before giving up. According to the owner it cycles on and off at random, less likely to work at night.
The low pressure side was encased in ice when he looked under the hood.
What could explain these symptoms?