Why is My heating pad flashing F it's not that old. I've tried in many outlet, but still does it

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Heating Pad Flashing A Red Light While On High? (Do This!)

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What happens when the heating pad light flashes red? The most common reason is that the heating pad is not properly connected to the control cord. The simplest ...
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Heating pad by softheat light just blinks 2022 (Solved) - Nosh ...

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How do I reset softheat Heating pad? · Detach the cable of the soft heat heating pad from the switch. Sometimes the light is blinking because the plugs aren't ...

Hello, Linda -

Do you perhaps mean an Xpress Heat heating pad? If so . . .

From:
http://feelpainrelief.com/does-sunbeam-xpressheat-heating-pad-extra-large-deserve-its-best-seller-spot-on-amazon/

(Quote)
How to Use the Heating Pad
When you get your package, the cord and the heating pad are not connected. Before plugging the cord into the outlet, make sure that the cord and the heating pad are connected. Yes, the control/cord must be connected to the heating pad before plugging it in. If not done in this order, it might cause a blinking F in the display and the pad will not heat up.
(End quote)

More . . .
Flashing F
Some users experience a flashing F (meaning failure), in the display. Make sure that the cord with the display is connected to the heating pad BEFORE plugging it into the electric socket. The flashing F can be avoided by doing this. If you still get a Flashing F, disconnect from the electric socket, make sure the cord is tightly connected to the heating pad, wait 2 minutes and then plug it back in.
(End quote)

More . . .
Customer Support and Warranty
This heat pad comes with a 5-year limited warranty. This means that for 5 years it should be:
Free from defects in material and workmanship. If there is any problem with the above after normal use, they will repair or replace this product or any component of the product found to be defective during the warranty period.
What you need to do is keep the original sales receipt/order and call the following number:

• In the U.S.A. - please call 1-800-435-1250
• In Canada, -please call 1-800-667-8623

They will help you out if you run into problems.
(End quote)

Best wishes.

YOU HAVE A BROKEN WIRE IN THE CENTER CONDUCTER ABOUT 2" FROM THE WIDE PLUG THAT GOES INTO HEATING. A COMMON PROBLEM WITH THESE PADS

This is a very common feature on these types of simple, high-volume, low-cost home appliances known as a safety fault. This fault will temporarily (or permanently) disable the appliance and happens for several reasons: (1) an over-temp (high heat) occurrence, (2) an over-power (power surge) occurrence, (3) an under-power (power outage or trickle power) occurrence, (4) an over-time occurrence (auto-off fails), (5) a short-circuit occurrence (exposed/crossed/frayed wires, etc.). Fortunately, it uses a digital "fuse" system and can be reset by the user. However, there is no universal reset process on SoftHeat products so you just have to play with it until you figure it out (customer service dept is no help). Mine is a Kaz SoftHeat HP980PT, with a red power indicator/power-off button and 4 green heat setting buttons. Mine faulted after a heavy storm caused multiple power outages and power surges in my neighborhood. The green light on the highest heat setting button was flashing on mine. Here's how I fixed it: (1) unplugged both ends of power cord and straightened out the cord, then plugged back in to the heating pad end. (2) While holding down the flashing light button, I plugged back in to the wall outlet. (3) While still holding down the flashing light button, pressed and held down the red power-off button, then while still holding down the red power button, I released the flashing light button, followed by releasing the power-off button. This stopped the flashing green light and caused the red power indicator light to stay on (steady-on). It works fine now. Note: Some models have an actual hard fuse in addition to the digital fault feature or possibly only a simple fuse (without the digital fault system). These fuses can the found at many retail stores and then very easily replaced. I hope this helps some of you!!!

Try setting the clock

Unfortunately I bought this heating pad three months ago and it too has an F in the display which I think means 'failure' but I do not know why. Also this is brand new and has worked fine for three months. Now what?
Does anyone out there have a comment to help me and this original person asking this question?

Sounds like a heating problem you might have to change the controls and heater

the START pad begins any oven function. if the START pad is not pressed within 5 seconds after pressing a function pad, the Push to Start ["PSH"] indicator light will flash and the push to start tone will sound as a reminder. you can download a manual for your range at www.whirlpool.com, go to "owner center", scroll down to "manuals & literature" and enter your model number

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.