This is an update to my own question re descaling. I removed the water filter and halved the amount of water being used and problem solved

My guess would be that your water tank float is trapped.
The remidy would be to descale the watertank itself.
If you use the Calris filter cartridge. remove it before descaling with a mild commercially available descaler. Don't forget to rinse thorrowly afterwards and reinsert the filter. Always use cold water to fill the watertank.
Hope this helps

instractions are from manual HD7810/00

Use the correct descaling agent
Only citric acid-based descalers are suitable for descaling the SENSEO
machine. This
type of descaler descales the machine without damaging it. For the correct amount,
see under 'Descaling procedure' below. Each descaling mixture can be used only once.
After use, the descaling mixture is no longer active.
We advise you to use the special SENSEO
Descaler (HD7012/HD7011/HD7006).
Read the instructions on the package of the descaling agent.
Never use a descaling agent based on mineral acids such as sulphuric acid,
hydrochloric acid, sulphamic acid and acetic acid (e.g. vinegar). These descaling
agents may damage your SENSEO

coffee machine.
Descaling procedure
1 Mix 50 grams of citric acid with 1 litre of water in a measuring jug. Stir until
the powder is completely dissolved.
2 Fill the water reservoir up to the MAX indication with the descaler mixture.
Then put the water reservoir back into the coffee machine. (Fig. 3)
Note: Not all SENSEO
machine types have a water reservoir with a capacity of
1 litre. If you have a SENSEO

machine with a smaller water reservoir, repeat steps
2 to 6 with the remainder of the mixture without filling the water reservoir up to
the MAX indication.
3 Press on/off button 3. (Fig. 10)
The machine is ready for use when the indicator light lights up continuously.
4 Place the 1-cup holder h with a used coffee pod in it in the coffee machine.
Close the lid and make sure it is properly locked.
Note: Always put a used coffee pod in the pod holder when you descale the
machine. This pod serves as a 'filter' to prevent the sieve or hole in the pod holder
from getting clogged with scale residue.
5 Put a bowl with a capacity of at least 1500ml under the spout to collect the
descaling mixture (Fig. 8).
6 Press the 2-cup button hhand let the machine operate. Repeat this until
the water reservoir is empty. (Fig. 25)
Never interrupt the descaling process!
7 Repeat steps 1 to 6. Replace the used pod with another used pod to filter out
the scale residue.
Note: To descale properly, you have to use 2 litres of descaling mixture.
Never descale the SENSEO
coffee machine with the lid open. Make sure the lid is
properly locked.
8 Rinse the water reservoir with tap water. Fill the water reservoir up to the
MAX indication with tap water and repeat steps 3 to 6.
Note: Do not refill the water reservoir with used hot water or the used descaling
mixture.
9 Fill the water reservoir with fresh tap water up to the MAX indication again
and repeat steps 3 to 6 once more.
Note: Always rinse the machine by letting it empty two full water reservoirs.
10 Remove the used pad and clean the pod holder after descaling to prevent the
sieve or hole in the centre from getting clogged.

Hi
Yes you should descale on a regular basis. All water except distilled and RO water have some minerals in it, just some waters have more than you want. Distilled and RO water has their draw backs like the are on the acid side and can disolve the metal parts of your boiler. They don't taste as good as most water. Water that taste sweet has calcium that needs to be removed, this is why we descale on a regular basis. You can set you machine to tell you when you need to descale and it will also descale for you, so you don't have to stand in front of it while it does so. I prefer to set my water hardness to the max.(4) all lights lite on a Palazzo to prevent what I have seen where a Palazzo was so plugged with scale no water would go through it. These are great machines if you take a little care. Descaling is all I do to mine. I lubed my brew group when I first got it. and just rinse it twice a year.

First, if water comes out of the wand while you are brewing coffee then the valve has a problem, it might need to be replaced or the pressure buildup is forcing water through. Remove the shower screen and screw in the head and clean, then descale the machine using Scalekleen, vinegar is no the best thing for descaling the machine.

Hi
The tool is a long plastic handle with a round cam on the end to lock on the filter. The filter is a small water softener that removes most of the scale and should be replaced about every 500 coffees depending on your water hardness. With good water that could be extended to 1,000 coffees. If you don't use the filter, descale more often.

Try doing descaling with a descaling product , like the ones below:

Urnex Cleancaf Coffee Maker Espresso Machine ...

$9.99 - DBROTH

Miele Coffee Machine & Steam Oven Descaling ... $20.55 - Totalvac.com

The Coffee Maker can be descaled using
a packaged descaling agent or vinegar.
Always mix the descaling solution using
cool water.
• When using a descaling agent, follow
the directions on the package for the
recommended amounts of descaling
agent and water to use.
• When using vinegar, fill the carafe with
a solution consisting of 1⁄2 vinegar and
1⁄2 water.
Descaling Steps:
1. Before descaling, always remove the
water filter (see “Installing the Ion-
Exchange Water Filter” on page 7) and
make sure the brew basket contains
no coffee or coffee filters.
2. Run the Coffee Maker through a
complete brewing cycle using a full
carafe of the descaling solution.
3. If the cleaning needed indicator lights
after the brewing cycle is complete,
repeat Step 2 using fresh descaling
solution. Keep repeating Step 2 until
the cleaning needed indicator no
longer lights after brewing.
4. Rinse the Coffee Maker by running
it through two brewing cycles using a
full carafe of fresh, cool water
each time.
5. Wash the brew basket in hot, soapy
water and rinse with hot water. This
part can also be washed in the upper
rack of the dishwasher.
6. Reinstall or replace the water filter.
Replace the filter every three months
under normal usage, or more often
with heavy use.

Not having received any solution message from FIXYA contributors, I consulted with a family member
and also my long held Time-Life Books, Fix It Yourself Library, Volume: Cleaning & Stain Removal,
ISBN: 0-8094-7400-X, Copyright 1990. My issue was resolved by using white vinegar and soaking the internal problem area for 30 minutes. The appliance has cleaned up like new and works fantastic. I apologize for bothering you.

you clean the filter with what vinegar you need to use descaler descaler melt calcium vinegar vinegar remove calcium in pieces that might block the machine use descaler 1 part descaler 1 part water put solution in the water tank start the machine after a few second turn it of wait 10 to 15 minute after repeat untill empty rinse very good 2 or 3 full rinse that stuff is corosif thanks for using fixya pierre

No, you can not use vinegar. It will dissolve scale into chunks and block the water heating circuit.