Garmaine Staff asked 3 years ago

I have an unvended hot water cylinder; due to low water pressure where I live, I have a pump installed which assists the pressure when using my shower. When I first go to turn my shower on in the morning, it usually takes around 10 seconds from the time that the shower is turned on until any water is produced and the pump is kicked into action; however, if I then turn the shower off and back on, water begins to flow immediately. What would be the reason for this?