What does code al99 mean on hotpoint ultima dishwasher

http://www.a1dar.com/site/dishwashers/dishwasher-fault-codes/hotpoint-ultima-fault-codes

I believe that this means "Heater element open circuit" Symptoms are thayt the machine will fill with water but then will not wash because it's waiting for the element to start heating the water and it can't.

I found these error codes for the hotpoint fdw80

AL01 - Anti flood switch operated
AL02 - Valve or connections
AL03 - Time out - drain
AL04 - Thermistor (module)
AL05 - Circulation pump
AL06 - Time out - fill
AL07 - Not used
AL08 - Time out - heat
AL09 - Software recogntion error
AL10 - Heating circuit
AL99 - Communications error - connectors, cables etc.
H20 - Time out - fill (taps)

Now looking at AL10 error. Most often it is the heater element which is not effective due to scale formation. Make a solution of white vinegar and water (50:50) pour it onto the base of the dishwasher. Leave overnight and run dishwasher as normal. Somehow the vineger has to reach the heating element which is an inline heater. I am assuming normally you would use the hotwater connection from the kitchen tap.

If this does not help - depends how soon into the cycle you get the error you will have to replace the heater. I think it would look like this.

I am sorry but your response time was too slow. I will not be taking you up on your offer of the assistance plan

F11 means the pump cannot be activated.You may have a loose conection or faulty pump. For Hotpoint error codes go to http://www.selfix-uk.co.uk

when you start the cycle the water will disperse. but check the fillters at the bottom of the dishwasher and make sure the drain pipe end is not crushed if you are enptying into the kitchen sink drain make sure the pipe is not kinked back on its self. try and get it as strait as you can.

clean out all the filters at the bottom of the dishwasher thorouly and the saltcontainer as well.
the f code is for filters.

You just need to switch the machine off for approx 30 seconds from the mains and switch it back on again!!

AL99 means that there is a communication error within the machines software.

f30 code means there is a problem within the motor curcuit,check connections at the motor and check motor brushes are not worn.

You can download the manual from this link

http://imagebank.indesitcompany.co.uk/brochures_online/pdf/Hotpoint/Laundry/HB00503_WF840_860_865_19504206802_jan05.pdf

You will need to contact the service helpline for the explanantion of the F10 display