20 Most Recent La Marzocco Linea Series Group 3 Espresso Machine Espresso Machine Questions & Answers

The boiler is contaminated, you will need to descale boiler and steam valves. Then rinse thoroughly about 5 times. The easiest way to check for this is to draw water from the tea spicket and check for smell and sediment. Something on the bottom of the boiler is being lifted when the machine fills and when it is heating. If there is a filter system on the line check to make sure it was changed recently.

Left side above the element.

The brew solenoid needs to be replaced.

It is possible that the thermostat on the grouphead needs to be reset.

Need group gaskets.

You can dowload one from LaMarzoccoUsa.com

there is two valves that can cause this one is called an anti-vac and the other is called an H/P valve (high pressure release valve or pressure safety valve) anti- vac valve is small and short. hope this helps

Then you will need to flush the boilers out and rinse, its easy, just takes alot of time. First turn the water supply and the machine off and let cool, then back off the screw in the knob a few turns and pull off knob. Then remove the screws holding the front panel to frame. There's about 5 of them. Note the valves under the boilers with the red or black handles. They are usually in the middle. Use this valve to remove the water in the boiler, then fill boiler and rinse about 3 times each. Then reassemble and you should be good to go.

First thngs first, make sure knob is turned to 2, then make sure there is water in the boiler, then turn machine to 0, remove back panel and reset thermostat on top of back boiler, if your machine has that feature installed. Then turn machine to 2, open one of the steam wands, If within 10 minutes boiler does get hot or there is no water bubbles, from steam wand, then the pressure stat might be damaged and needs to be replaced.

There are 2 boilers on these machines, Which one are you having this problem with?
I might have the tank/boiler for the group heads.

If you remove the boiler, Replace O'rings and gaskets.

Replace or rebuild the Valve (behind the knob).
Turn off the machine and release the steam pressure.Before you take it apart.

Look at the bottom of the tank they have a red valve or a plug.
Once is off and cool down, Open the valve or remove the plug.
Open the steam valve (to allow the air in)to speed up the process.

To increase dispense pressure you turn the adjustment screw at the pump. When pulling a shot (use espresso) on one group the bottom needle of the gauge should read 9bars while pulling the shot.

Press spiral button and hold for 8 secs, lights will flash, then press button you want to program when you get correct volume press stop button. Some machines need a key to program them, check to see if there is a lock on the front of machine. If you have the model with the cronos pads you do not have to worry about a lock.

New machine? check the thermal reset on top of the left group head. Press the red button and see what happens.....