Basically the header tank above the immersion is working as it should and I proved it by filling it to the overflow with a hose yet the cylinder below still only fills to half way which has caused the wring for the thermostat/element to burn out.
What could be causing the immersion to only partially fill and what stops a fully functioning one stop filling?
Cheers
What could be causing the immersion to only partially fill and what stops a fully functioning one stop filling?
Cheers