DOES ANY ONE KNOW HOW BIG A JOB IT IS TO REPLACE THE ABOVE? I RECENTLY TURNED ON THE SWITCH FOR THE IMMERSION TO HEAT THE WATER FOR A SHOWER, BUT THE WATER NEVER HEATED, THE LIGHT WAS ON, TO INDICATE IT WAS WORKING....HOWEVER NO HOT WATER?
i HAVE HAD ONE OF THE ELEMENTS REPLACED, IT WORKED FOR...