📹 Gaggia Classic Pro: Not Heating

Learn what to do if your Gaggia Classic Pro is not heating up or if shots or coffee is coming out cold.

Machine Is Not Heating

Is the water coming out of the group head lukewarm or at room temperature?

  • If no, move on to the next question.
  • If yes, it may be an issue with the age of the machine.
    • If the machine is brand new:
      1. In the rear of the machine, use a Philips head screwdriver to remove the two screws in the black plastic cover.
      2. Lift off the housing. The black plastic and stainless steel are attached and will come off in one piece.
      3. Check the thermostat, which is located on top of the boiler, for loose wires on its top or side.
      4. If there are no loose wires the thermostats need to be replaced, as shown in the video below.

How To Replace the Brew and Steam Thermostats on a Gaggia Classic

Is the water coming out of the group head hot at all?

  • If no, go back to the previous question.
  • If yes, The maximum temperature of water in a paper cup or Styrofoam cup is 179°.
  • NOTE: You also can preheat your cups for hotter coffee

Are you making milk based drinks?

  • If yes, The espresso temperature maxes out at 179°, which cools as the machine heats up to steam temperature. Steamed milk is generally heated to approximately 150° to avoid scalding, so between the wait time and the combined temperatures the drink temperature will be significantly less than the max temperature of 179°. We advise frothing the milk first, then brewing, for the hottest combination.
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