Cold coffee Coffee is cold, heating up the cups didn't work. I put the temperature of coffee to maximum but it's still cold. Please help. Thank you.

Most domestic coffee machines only have a small heater tank. I would suggest that after 5 cups, the tank cannot retain enough heat as the cold water from the supply has refilled it and it has to reheat again. If it wasn't doing this before, you may have to contact a service Company.

USING YOUR PERCOLATOR
1.Wash the Percolator thoroughly before using for the first time.
(See "Cleaning Instructions" section in this manual.)

2.Remove Cover, Basket, Spreader and Pump Tube. Use cold, fresh
tap water to fill Percolator. Fill according to markings on inside
of Percolator for number of cups desired. Use cold tap water -
the automatic brewing cycle is timed to begin with a cold
water start.
NOTE: The bottom of the Pump Tube Spring marks the maximum
capacity of the Percolator.

3.Wet Coffee Basket to help keep small particles of coffee from sift-
ing through. Place Basket on Pump Tube. Add desired amount of
regular or percolator grind coffee to Basket.

4.Place Pump Tube with Basket into Percolator so bottom of tube is
set into Center Well. Place Spreader on top of Basket and snap
Cover onto Percolator. Attach cord to Percolator and plug into
standard household 120 volt AC wall outlet. Brewing begins
within seconds and continues at a cup-a-minute speed

5.When coffee brewing is complete, percolating will stop. The
Percolator automatically switches to "KEEP WARM" setting to
preserve fresh-tasting coffee at hot, ready-to-serve temperature.
For best flavor, remove Coffee Basket, Spreader and Pump Tube
when brewing is completed.

I would check your electrical supply. Plug in a hair dryer where the coffeemaker was plugged in and see if it works. If it doesn't there is probably nothing wrong with the coffeemaker.

Here is what I would do;
1. Determine if you have noticed a change. i.e was the coffee hotter in the past or has it always been this temperature. If the cups are cold or the amount of water used for each cup is small then the resulting coffee will be cooler than if warm cups were used or if the amount of water used was larger. Also if the water is not hot enough you will not get a good Crema and coffee taste will not be correct.
2. Assuming the problem is not '1' above then the likely causes is the flow through water heater. This heater is used to heat water for coffee and also for the hot water. So if the hot water pipe is also not producing hot water then you know it's a problem with the flow through water heater or power control of this module. In addition to the actual heater there is a temperature limiter, temperature fuse and a temperature sensor. If some heating occurs then it is not the temperature fuse. But it could be a fault in the actual heater, the sensor or the limiter. These components are at mains voltage and thus identification of the fault and replacement of defective parts should ONLY be performed by a trained Miele technician. So if this is the problem its best to call Miele.
I hope this helps. Regards

There is no temperature adjustment for the heating element under the carafe.
The Instruction Manual says:

If coffee is too cold, machine not preheated, cups not preheated, milk not heated enough (if making a cappuccino or latté)

Use cold water; minimum 4 cups
(20 oz), up to maximum 10 cups (50 oz)

You should be able to pick up a replacement/new pot at your nearest Restaurant Supply store. Make sure you get a 64 oz./ 1/2 gallon pot.
Before plugging in your brewer, unscrew the sprayhead located just above where the filter basket sits and replace the basket, pour 3 pots of cold water through the opening on the top if the brewer is empty. This brewer has a reservoir that holds about 2 1/2 pots of water at brewing temperature when heated. Make sure you put an empty pot under the filter basket after pouring in the water. Water will flow from the brew basket when the reservoir has reached its capacity. Once water flows you can then plug in and energize your brewer and replace the sprayhead. It will take about 15 to 20 minutes for the brewer to reach brew temp, you will hear the heating stop. Put an empty filter and a dose of coffee (I recommend starting with a heaping measuring cup of drip ground coffee) into the filter basket, lightly shake it level, replace the basket and pour through 1 full pot of COLD water in the top. For best results pour the brewed coffee into a pre-heated thermal server if you plan on holding the coffee for more than 10 minutes or so.
Enjoy!

HI When was the last time you descaled? This can have a temp lowering effect if you don't descale on a regular basis. Program you water hardness so its set on 4. This will tell you when you have to descale. Descals is not the same as cleaning. Its a special acid that disolves the deposits inside the boiler.

The water will not come out cold only hot they button basically allows for a 4 oz cup so that you have room to put ice in the cup

Water Level ////Amount of Ground Coffee

42 Cups --2 ½ Cups
36 Cups-- 2 Cups
30 Cups- -1 ¾ Cups
28 Cups --1 2/3 Cups
24 Cups --1 ½ Cups
22 Cups --1 ½ Cups
18 Cups-- 1 ¼ Cups
12 Cups --1 Cup

1. With basket and stem removed, fill coffeemaker with COLD water to desired level using the cup markings on inside of coffeemaker as a guide. Do not make less than 12 or more than maximum capacity of the coffeemaker at one time.
2. Place stem into heating unit in bottom of coffeemaker, then put basket on stem. Spread the recommended amount of ground coffee evenly into the basket. See chart. Use regular electric perk grind coffee or coffee ground for all coffeemakers. Do not use drip or finely ground coffee as flooding of the basket can occur.
3. Turn cover in place on coffeemaker. To reduce coffee spills, especially if coffeemaker is tipped over, make sure cover has been turned clockwise until it is completely secured in the handle slots. (Note the arrows on the cover for correct turning.) The cover temporarily reduces coffee spilage if coffeemaker is tipped over, so care should be used when moving coffeemaker.
4. Place coffeemaker on a dry, level surface. Attach cord to coffeemaker and plug into a 120 volt AC electrical outlet ONLY.
5. Coffeemaker stops perking automatically. (Each cup of coffee requires about 1 minute brewing time) Serving light will glow when coffee is ready. Before serving, use a hot pad to remove cover, then carefully remove stem and basket from coffeemaker as coffee and grounds are HOT. If not removed, bitter oils from the coffee grounds will drip into coffee. Replace the cover making sure it is completely secured into the handle slots.
6. Coffee will remain at serving temperature as long as coffeemaker is connected to outlet. (if you have an insulated coffeemaker, the sealed-air insulation will keep coffee hot for up to two hours without electricity.) To serve, place cup and saucer under faucet and press down on handle. If a continuous flow is desired to fill a carafe, lift handle straight up until it locks into open position. When approximately one cup of coffee remains in coffeemaker, disconnect from outlet.
TO MAKE MORE COFFEE: If another pot of coffee is desired right away, partially fill coffeemaker with cold water to reset the thermostat. Pour out water, refill with cold water and repeat steps 1-6.
TO HEAT WATER FOR INSTANT BEVERAGES: Plain water may be heated in your coffeemaker for use with instant beverages. Simply fill the clean coffeemaker with cold water to the desired cup level, and then place the stem and empty coffee basket in place. Using the stem and empty basket will heat the water more uniformly. Secure cover in place and plug coffeemaker in. Heat water until perking stops and serving light comes on. Unplug coffeemaker when less than 1 cup remains. Other than making coffee or heating water, no other liquid should be heated in coffeemaker as damage to heating unit can occur.
When coffeemaker is used to heat water only, the metal inside will discolor which is normal and does not affect performance or the water heated in the coffeemaker. Refer to Special Cleaning Instructions in this manual for removing discoloration as well as mineral deposits, which form inside the coffeemaker when heating water. If these deposits are not removed, pitting of the metal inside may occur and result in damage to coffeemaker. Refer to the cleaning your coffeemaker section