mira sport 10.8kw tripped out now runs cold/warm??

i have bypassed the thermostat and still have the same problem think it might be the element any ideas on how to test it??
there is three points on the top of the tank one red one brown and two coneccted to blue. now i have 11.3ohms between blue and red and nothing between blue and brown or earth and any colour... please help can it still be the element.?