If a new INTENZA filter has just been fitted or the water tank has run empty, air can become trapped in the system.

Symptoms

• Pump can be heard running.
  
• Little or no water comes out.
  
• Machine may stop during brewing.
  

Fix

1. Remove the water filter.
   
2. Immerse it in water with the opening facing upwards until all air bubbles stop escaping.
   
3. Refit the filter, pressing it firmly into the tank connection.
   
4. Run several hot water cycles.

The manual notes that limescale remover residue or deposits inside the water tank can restrict water flow.

Fix

• Remove the water tank.
  
• Wash it thoroughly with clean water.
  
• Ensure the tank seats fully when reinstalled.

As scale builds inside the hydraulic system, water flow gradually reduces until the machine may barely dispense.

Signs

• Coffee pours very slowly.
  
• Cup sizes become smaller.
  
• Hot water flow is weak.
  

Fix

Run the Descaling or calc'nClean service programme using Siemens-approved descaling tablets. The manual warns against delaying descaling or using unsuitable products.

The EQ700 manual states that a dirty brewing unit can reduce or prevent proper coffee dispensing.

Fix

• Remove the brewing unit.
  
• Rinse under warm running water only.
  
• Allow it to dry.
  
• Refit securely before restarting the machine.
  

If prompted, also run the Brewing Unit Cleaning programme.

If you hear the pump buzzing continuously but nothing comes out:

• Check the water tank is fully inserted.
  
• Remove and prime the water filter.
  
• Run several hot water cycles.
  
• 
  Complete a full descaling cycle if it has been overdue.

If the display shows:

"Error in water system. Please restart appliance."

The manual recommends:

1. Switch off the machine.
   
2. Unplug it for 10 seconds.
   
3. Reconnect and restart.
   

If the message returns after these checks, the machine requires further diagnosis.