It is not washing

Reset the power at the breaker, but you may need a new pump and motor assembly. The same pump washes and drains on most Hotpoint models- a solenoid is used to open a drain flap and let the water out, but a bad pump will equal no wash or drain... Hotpoint Dishwasher Pump and Motor Assembly WD26X10013 Hotpoint Dishwasher Drain Solenoid Kit WD21X10268

if u lower the drain hose to ground level it will drain remaining water out

Are you saying it is draining the water properly? Because it sounds as though the pump is faulty. Every now and then you get pup motor that don't short out or stop completely they just don't drain we'll anymore. The drain period on your machine is timed so a slow drain may cause the error. So even though everything is clear and 'working' the pump needs replacing. Another cause would be a false reading from the pressure switch(level switch) but you would normally have problems with fill etc also, so unlikely.

It is a common fault that the drain fails to work in most machines in a period of time and is the most problematic fault in a washing machine. In all occasions it is important that your observation is most important and so is vital to the identification /rectification and solution. If you have noticed that water has leaked then as the drain hose pump/valve and fittings are located on the underside of the machine it is important that you look for possible leaks here. In some cases the drain hose would be clogged at the drain end to outlet of the house and so there will be back flushing resulting in overflow to the outside. Also the drain pump/valve can be clogged. Now remove the drain hose clamps and remove the drain pump/valve, clean the drain pump/valve, use back flushing to clear off all dirt. Now test using power to see if this works and can be simulated. When refitting, the hose must be tightened properly. If the pump/valve does not work even with power then it must be replaced. If there is intermittent power to the drain valve/pump then the program controller unit is a suspect.
Cleaning a pump: http://www.youtube.com/watch?v=zKjKi50YBpI&NR=1&feature=fvwp
Finally the washer must be placed with a tilt- use a spirit level- so that all water will drain to the outlet port and thereby there is no residual water remaining.
Replacing the pump on a Bosch machine, please check this link for tips:
http://www.espares.co.uk/advice/washing-machines/a/7/1373/how-to-replace-the-pump-on-a-washing-machine-.html

Pressure switch jammed on full

Hello,
It would seem to me that the heating element needs replacing from the information you have supplied especially as it performs most of the other functions like filling and spin and drain.
Good luck

Just had F-12 on my Hotpoint Aquarius washing machine. Problem was due to water not draining. Power off. My machine has access plate at bottom on the back. The water drain is held onto the drum via a jubilee clip and when i took it off the drain was clogged with hair, sweet wrappers, money, hair bobbles Once cleared, put back as was - machine now running ok..

Look at my issue on "eco smart won't drain, smells hot". You could have same issue and your motor just hasn't burned up yet.

hi
if the pump works fine in diagnostic mode then it has tobe a module problem
cheers grant

check out another website. ths.gardenweb.com/forum/laundry for other fix it tips on FPaykel.