Sunbeam heating pad model 2021-912 has worked well for 6 months. Recently it quit working; red light blinks and no heat.

SOURCE: new heating pad not working

have same problem with heating pad . reset control by unplugging unit for 1 minute , while holding down power button plugged unit back in . sometimes this takes 3 or 4 tries.

SOURCE: Sunbeam Heating pad will not reset

I have a Sunbeam heating pad with the SW204 controller that the High light blinks when it is plugged in. I called Sunbeam and the first thing they said is it cannot be plugged into a surge protector. Next, to reset it unplug it from the wall, then unplug the controller from the heating pad. Wait 30 seconds, then plug the controller back into the heating pad and then into the wall. It did the trick. However, when I move it to the bedroom plug it does the same blinking. Sunbeam is sending me a replacement heating pad. They appear to be very good with Customer Service since it is more than a year old.

SOURCE: Sunbeam heating pad no longer heats. The red

I had same issue w/ red blinking light on my Sunbeam controller SW114, pad CAT93. Was about to toss away but then got it to work perfectly by doing this:1. With unit UNplugged, press & hold the single grey controller button2. While pressing the controller button, plug the unit inUnit will power up in the 'warm' (green light) setting; pressing the controller button will cycle you thru the others modes.

SOURCE: Sunbeam heat pad says it requires 120V ac outlet. I plugged it into every outlet right out the box and have only gotten a red blinking light.

what voltage is recommended for the unit
It it says 120 volts but you have different voltage the it may be damaged from the incorrect voltage
if not the case take it back for a warranty exchange as it is faulty from go