My Sunbeam Heating pad has an F in window where there were numbers does not heat how can I fix?

Hello, Pat -

You have not stated the manufacturer name of your heating pad. Knowing that will help in providing you the right information.

I have found complaints about a Sunbeam King Size XpressHeat heating pad, with statements from the owners about an F appearing on the temperature display for the heating pad and the pad no longer heating.

In case yours is a Sunbeam King Size XpressHeat heating pad, see the complaints here:
https://www.sunbeam.com/pain-relief/heating-pads/sunbeam-king-size-xpressheat-heating-pad/002013-511-MASTER.html
Scroll down the page to see the Reviews.

I hope you saved the instructions which came with your heating pad and the sales receipt. The pad may still be covered by the manufacturer's warranty. Most companies require a copy of the sales receipt when an owner needs warranty coverage.

You can add more information by choosing Comment and typing in details (maker and model number) for your heating pad.

Best wishes.

unplug replug blanket to control connectors plug back in
this will continue to happen on these blankets you will have to reset these blankets again and again (chinese junk)

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.

I had this problem with a heating pad too. I tried turning it off, unplugging it, then plug it back in and see if the light is still blinking. If it's not, set it to the temp you want. My heating pad was very temperamental that way, it didn't want to be set before it was plugged in. I hope this works for you.

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.

Same F2, quick off problem here. Then I noticed that the gray plug on the power cord was not completely flush with the connector on the pad. I shoved them together until there is no gap. The unit's worked perfectly since then.

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.