I have a kaz soft heat with massage heating pad its model HPM-970.. i just need to know what size plug goes into the controller

SOURCE: DuoTherm Model 59516.331 needs heat strip added

MODEL SERIES: 579XX, 590XX & 59516 (60XXXX, 61XXXX ON PAGE 2) ALL MODELS ARE PREWIRED WITH A POWER RECEPTACLE IN THE ELECTRIC BOX FOR EAS Y INSTALLATION
USE PN 3101121.030 HEAT STRIP,FOR NON-DUCTED MODELS

SOURCE: malfunction heating pad

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.

SOURCE: have heating pad model 818-7. blinking red light

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.

SOURCE: why does the light blink on my westpoint stevens

http://martex.com/page/view/id/581

http://www.mambomedia.com/CLIENTS/WPH/WPH_Trouble_Shooting_Guide-1.2.pdf

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.