I cant get my gqf 1588 to return to factory settings. Ive turned off all switches, turned on 2,4,6,8 let it blink and then turned off all and turned on 4 again just like it says but the light just blinks and wont get about 85°??? The only way it will heat is leave like the 5 or 6 toggle on and then it shoots up to about 102°? Any help here? thanks