Anyone know about Ripple Control. I am in Browns Bay and my hot water tank is showing less than 20 degrees C. Tried ringing Vector to see if there is problem but held on for 20 minutes and it cut me off. Now it is giving engaged signal. Would the Ripple control normally be off for a day or more as tank normally lasts more than a day. It has two elements normally I only use the top one but have now turned on both top and bottom.