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ADRIUM Service Solutions
(925) 999-4095 · San Ramon, CA · CSLB #1136642 · BBB A+

Repair guide

Dishwasher repair guide: common failures we see in the Tri-Valley

Drainage, leaks, heating, control boards. Brand notes for Bosch, KitchenAid, Whirlpool, Samsung, LG. Know what to check first and when to call.

By May 20, 2026 1 min

Dishwasher Problems We Fix

  • Not draining: clogged drain pump, blocked filter, faulty drain solenoid (one of the most common calls we get in the Tri-Valley)

  • Not cleaning dishes: spray arm clogged, wash pump failure, low water temperature

  • Leaking water: door gasket, pump seal, water inlet valve

  • Not starting: door latch, control panel, thermal fuse

  • Not filling with water: water inlet valve, float switch, water supply issue

  • Noisy operation: wash arm bearing, chopper blade, drain pump

  • Door won’t close or latch: door latch assembly, hinge spring

  • Error codes: E1, E4, F8, i30, etc. (all brands)

A Dishwasher Pump and Sump Leak, On Camera

The base of a Whirlpool-family dishwasher (Whirlpool, KitchenAid, Maytag), where the circulation pump, sump, and diverter live. A worn pump seal, a cracked sump, or the diverter lets water past and onto the floor.

Check These First

A few things worth trying before you call:

  • Power and door latch. Make sure the door clicks fully shut and the breaker hasn’t tripped. A partially latched door is a common cause of “won’t start” calls.
  • Delay start. Some models default to a delay cycle after a power blip. Check the control panel before assuming the machine is dead.
  • Filter. Most dishwashers made after 2010 have a twist-out filter at the bottom of the tub. A clogged filter causes standing water and poor cleaning. Rinse it under the tap and reinstall.
  • Drain hose. If the machine was recently moved or someone worked under the sink, confirm the drain hose still has its high loop or anti-siphon air gap at the cabinet.

If those don’t fix it, stop there. The rest requires pulling the machine and testing components.

What the Repair Actually Involves

The failures listed above (worn pump seal, failed heating element, bad control board, cracked sump) all sit inside the machine. Diagnosing them correctly means testing components with a meter, tracing error codes to the actual part, and ordering brand-specific parts. Bosch, LG, and Samsung in particular use proprietary connectors and calibration steps that aren’t in general guides. Getting it wrong means a worse failure or a flooded cabinet floor.

We test, diagnose, and repair in one visit when parts are on hand. We’ll get you on the schedule fast, often same or next day when we can.

Ready to Fix It?

Book at adriumservice.com or give us a call. Tell us the brand, model, and what it’s doing and we’ll give you a straight answer on whether the repair makes sense versus replacement.

FAQ

Common questions.

Why is my dishwasher not draining?
Most often it's a clogged filter or blocked drain pump. Pull the twist-out filter at the tub bottom and rinse it. If there's still standing water, the drain pump or solenoid likely needs testing with a meter. Call us and we can diagnose it in one visit.
Why is my dishwasher leaking water?
Leaks usually come from the door gasket, a worn pump seal, or the water inlet valve. A pump or sump leak shows as water pooling under the machine. Finding the source means pulling the unit and testing internal components, so it's not something to probe without the right tools. Call us and we'll track it down.
Why won't my dishwasher start?
Check the door latch first. The machine won't run if the door isn't clicked fully shut. Also check whether delay start activated after a power blip. If both are fine and the control panel is unresponsive, it's likely a thermal fuse or control board. Those need proper diagnosis before you replace anything.
Why are my dishes not getting clean?
Usually a clogged spray arm, wash pump issue, or water not reaching temperature. Clean the filter and confirm the spray arms spin freely. If dishes still come out dirty after that, the wash pump or heating element probably needs testing.
What do dishwasher error codes mean?
Codes like E1, E4, F8, and i30 each point to a specific system (drainage, water intake, temperature, flood protection). They narrow down where to look, but confirming which part failed takes meter testing. We trace error codes across all major brands.

Got a real problem?

Tell us what's broken. We'll quote it.

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