Troubleshooting-Gaggia-Semi-Tube-Tank-No-Flow

No Flow At All

If the machine is not outputting any water follow the instructions below. Once flow is restored make sure to pull a full 8 oz. of water using the hot water function to ensure the machine is correctly primed.

1. Check the water tank to make sure it is filled to the max line.
2. Make sure the inlet lines are in place and not blocked by anything.
3. Activate the hot water function on the machine. You should hear a vibration noise coming from the machine to indicate that the pump is activated.
   1. If you can't hear anything coming from the machine then there may be a loose or disconnected wire inside of the machine. Unplug the machine and open up the top to inspect the inside for any loose or disconnected wires, particularly at the pump or the front switch panel. Firmly secure any loose wires and test flow again using the hot water function.
   2. If you hear the machine vibrating then the pump is turning on. Unplug the machine and open the top to inspect the inlet line to make sure it isn't kinked or pinched. If the hose is kinked straighten it out and then plug the machine in again to test for flow.
4. The pump of the machine may be vapor locked, requiring a force prime of the unit.
   1. To force prime this unit take a kitchen syringe, turkey baster, or priming pump and fill it with water.
   2. Insert the tip of it into the inlet line of the machine.
   3. Activate the hot water function of the machine. When you hear the pump kick on quickly force water with your priming tool.
   4. Immediately turn the machine off to prevent air from being drawn into the line.
   5. Repeat this process multiple times. After 3-4 manual primes you should start to see water spitting from the steam wand. Once this happens you can put the inlet line back into the tank and try to prime the machine normally by pulling 8 oz. of water through the machine using the hot water function.

5. If no water flows from the machine and the pump just hums, rather than making it's normal sound or a louder rattling sound, the pump most likely needs to be replaced. Instructions for replacing the pump can be found below and a replacement pump can be purchased here

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How to Replace the Pump