I have a Gaggia titanium machine. When the machine is taken off energy saving the machine usually heats up before it is ready. It is not doing this any more and as such it is pouring cold water through the coffee. I can leave the machine on for a period of time but it doesnt seem to be heating the water. The steamer works fine though. Any suggestions?

Different model, but explained here

https://www.manualslib.com/manual/1179614/Gaggia-Naviglio-Hd8749.html?page=46

In yours it is mentioned here in the manual under 'Standby'.

https://www.manualslib.com/manual/55844/Gaggia-Titanium-Espresso-Machine.html?page=16&term=standby&selected=1#manual

..

The heating element is shorted out. Contact the manufacturer for a replacement part (if available)

A nice coffee maker. So, please could you tell us what is your question?
Maybe some operating instruccions?
Check support library:
Or do you want to repair something?


Gaggia TITANIUM Espresso Machine Operating Instructions Manual

GAGGIA

Gaggia Titanium Super Automatic Espresso Machine

Cleaning Gaggia Titanium Espresso Machine Gaggia Titanium Steam Valve Replacement

- is the machine ready to use?
If so:
- Does the pump work?
if so:
- Does the tank give water (bubbles)
if so
- is the brewunit clean

- machine not ready => electrical heating problem
- pump broken => no sound
- watertank => valve stuck
- brewunit => stuck/constipated

It is easy to replace the thermostat and your diagnosis is correct. There might be a resettable thermostat on the boiler.

Check the chute from the grinder to the brew unit.

Hold down the descale button for 5 seconds its the double ellipse, that should put it in a clean cycle. It is possible that it needs cleaning and it locked up because it was not getting cleaned.

If the machine is new ensure that the machine is ready to brew , and that you are following the procedure correctly.
If the machine is used, this often happens because the heating element and thermostat in water tank are covered with scale, and that prevents proper heating. Try buying a descaler, and performing a descaling procedure a couple of times.
If that does not work , warm water is usually caused by a defective thermostat.

You have a bad thermal fuse. Do a google search on replacing the thermal fuse in a Gaggia. I fixed mine in 20 minutes for $1.98! Good Luck!

Let the unit complete it's self test mode.
When "select product ready for use" is displayed then you press the menu button to access the menu function.