Error Detected May 1, 2026
Error Code

Bertazzoni Dishwasher Error Code E4

Error code E4 on Bertazzoni dishwashers sold in the USA typically indicates a water inlet or fill system malfunction. This error means the dishwasher is unable to properly detect water entering the unit or maintain adequate water pressure during the wash cycle.

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Quick Diagnostics
Signs 6 identified
Possible Causes 9 listed
Safety Checks 8 steps
If unsure, stop using the appliance and contact a certified technician immediately.
What you notice

Signs

6
  • 01
    • Dishwasher stops mid-cycle and displays E4 error code
  • 02
    • No water or insufficient water visible inside the wash chamber
  • 03
    • Dishes remain dirty after cycle completion
  • 04
    • Water inlet valve makes unusual humming or clicking sounds
  • 05
    • Error code appears at the beginning of the wash cycle
  • 06
    • Control panel lights or display becomes unresponsive after error appears
Why it happens

Possible Causes

9
A
• Water supply valve (main shutoff) is turned off or partially closed
B
• Inlet hose is kinked, pinched, or crushed, restricting water flow
C
• Water inlet filter screen is clogged with debris, sediment, or mineral buildup from North American tap water
D
• Faulty water inlet valve solenoid requiring replacement
E
• Low water pressure from municipal supply (below 20 PSI minimum requirement)
F
• Damaged or disconnected water inlet hose connection
G
• Defective water level sensor or pressure switch
H
• Circuit breaker tripped affecting 120V power to inlet valve
I
• Door latch not fully engaged, preventing cycle progression
DIY — No disassembly

Safety Checks You Can Do

8
  1. 1
    • Check the home circuit breaker panel and ensure the dishwasher circuit breaker is in the ON position; if tripped, switch OFF then back ON
  2. 2
    • Locate the main water shutoff valve under the sink and verify it is turned fully counterclockwise (ON position)
  3. 3
    • Inspect the inlet hose from the water supply to the dishwasher for visible kinks, bends, or crushing; straighten any kinked sections
  4. 4
    • Unplug the dishwasher from the electrical outlet, wait 60 seconds, then plug it back in to perform a complete reset
  5. 5
    • Check that the dishwasher door is closing completely and latches with an audible click
  6. 6
    • Remove and inspect the inlet water filter screen (located where the hose connects to the dishwasher) for debris or sediment; rinse under running water if clogged
  7. 7
    • Run a short rinse cycle to confirm water is flowing into the unit after performing the reset
  8. 8
    • If error persists after these checks, discontinue use and contact a certified Bertazzoni service technician for professional diagnosis and repair
Always unplug the appliance before performing any physical check. These are visual/external checks only.
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