I have 2 Senseo HD7811 machines. One of them works just fine everyday but the second one does not heat the water. It was in storage for a few months and the float was stuck. I read one of the reviews that said how to fix that problem and that worked but it still wont heat. I also tried to run the "Preparing the machine for use" procedure but it's still not any better. What should I do next????

SOURCE: Senseo coffee maker

There isn't a way to adjust it. The senseo is calibrated to make either a 4oz or 8oz cup. Unfortunately, we are so used to buying mugs at the store that are MUCH bigger than this!

SOURCE: Senseo machine has started producing very weak coffee

try descaling the machine first, build up may be causing problems. its in the direction book on the senseo site.
If that doesn't work
Call senseo at 866-4-736-736 866-4-Senseo and describe the problem.if you have purchased or received it as a gift less than two years ago they will send a new one FREE.

SOURCE: I turn on the machine, and the light just blinks

at the side of the machine by the water level you will see a float, sometimes this float gets stuck, use a magnet on the outside of the machine to connect with the magnet in the float and then slowly slide the magnet upwards, the float will follow the magnet and the light will flash slowly and the water will heat, if the light continues to flash rapidly you have not connected with the magnet - try again

SOURCE: Senseo 7814 does not heat water and red light keeps flashing

is the red light flashing as though not enough water, if so use a magnet to connect to the valve inside the machine, the valve can be found along the water level where the float is. what is happening is that the float is stuck. by connecting the magnet to the valve and very slowly moving the magnet along the water level, upwards the valve will follow and the water will begin to heat as the light changes to a slow flash, if it doesn't work try again as you have not connected to the magnet

SOURCE: philips senseo coffee is watery

It may be the pod holder,there is a seal under the black disc at the bottom of the holder,the water will bypass the coffee under pressure,travel to the outside of the pod holder and exit the centre where the filter mesh is,if there is no foam also this is a sure sign,fill the empty pod holder with water and see how quick the water drips,I had this same issue and bought a new pod holder and compared,should be no more than 1 drop a second,you can knock the plastic out and re seat the O ring or buy a new holder,hope this is of use to you