Contact GHD asap. That's how I knew something was off with my straightener. The first time it happened the same thing to me, I turned it off, removed from the plug and waited and tried to turn it on again but I still get the red light flashing on and off. I tried doing it for a few times but still had the same issue so I contacted GHD and they replaced my straightener but after a few months it happened again. It sucks because for the price we pay for these straighteners we expect quality but unfortunately it isn't the case with these products.
I'm absolutely in love with my GHD.I will never buy another brand again. It heats up super quick, glides through the hair like silk and takes alot less time as with previous straightners i've had to go over the same strand a few times and it left my hair frizzy/flyaway and meant i had to use products to smooth it down! I dont really need to use any products except hot iron spray or cream protectant and a tiny amount of serum afterwards. The GHD also curls my hair perfectly, now that ive mastered the technique ;-)
As mentioned earlier, the GHD classic Styler uses ceramic plates which heat up faster than other materials but it doesn’t emit negative ions like tourmaline flat irons, which doesn’t only straighten hairs smoothly but also makes dry and damaged hairs healthy by counteracting with positive ions. So, in terms of professional use and/or greatest results, GHD classic styler can’t be recommended. That is my personal opinion as an author. As an alternative, I can recommend you to read CHI Air hair iron review, it is tourmaline ceramic, and thus little more in price in comparison to classic styler.
Ghd Eclipse, the creme de la creme of Ghd Hair Straightners,  tackles any hair texturequickly and easy. You get long lasting curls, leaving your hair glossy with an unbeatable shine. Outside of the styler is cool, it doesn't heat, which is better when curling your hair. This styler will also turn itself off fter 30 mins. This Styler is a Game Changer. 
Though it has no adjustable temperature setting but it automatically adjusts with your hair. You do not need to set the temperature. The ghd Classic 1 inch Styler iron never split ends and your hair would never look dry, frizzy and damaged. It gives you the shiner and silkier hair for its advanced ceramic heater skill. The ghd Classic 1 inch Styler iron takes a very short time to straighten your hair. Never pull out your hair.
Lightweight Feel: If you style your hair with a straightener every day, you know how taxing it can get to hold a heavy product above your head while you utilise its magic. Thankfully, one of the key elements of the original ghd V Gold Styler has been maintained in the new model — its lightweight feel. We promise your arms won’t ache even after a solid session using this straightener!
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