Problem summary
Your Kenwood KDW6 dishwasher is leaking from the back pipe connection and won't power on. This combination of symptoms suggests a fault affecting both the water inlet system and the electrical supply or control board.
Likely causes
Based on repair history for this fault pattern, the most common causes are:
Motor or pump failure (19.4% of reports)
The motor that drives the pump may have failed electrically or mechanically. A faulty motor can prevent the dishwasher from powering on and may lead to water pooling if it can't drain properly.
Inlet hose damage (16.1% of reports)
The fill hose connected at the back may be cracked, loose, or split. A damaged hose will leak water during or after a cycle. If the leak is severe, it can trip an internal safety switch that cuts power to the machine.
Door seal degradation (9.7% of reports)
A worn or misaligned door seal can allow water to escape during operation. While typically seen as a leak from the front, a failing seal can also cause water to pool at the back and trigger power-cut safety features.
Why this needs an engineer
The combination of a leak from the back connection and loss of power indicates a fault that involves:
- The electrical supply circuit or control board (a safety issue)
- The water pump and motor assembly (sealed mechanical system)
- Internal hose connections and seals (require system inspection)
Diagnosing which component has failed requires specialist tools and knowledge. Attempting to investigate the electrical system risks further damage or safety hazards.
What to check before calling
- Ensure the water inlet tap at the back of the machine is fully turned on.
- Check that the plug is fully inserted into the wall socket and the socket is not switched off.
- Look at the back of the machine to confirm where the leak is coming from (fill hose, drain hose, or door seal area).
Note these observations when you call — they help the engineer diagnose faster.
When to call SMC Services
Contact a qualified engineer if:
- Water is actively leaking from the back connection
- The machine won't turn on or respond to the control panel
- You notice water pooling inside or under the dishwasher
- The problem started suddenly rather than gradually worsening
If you're in Northern Ireland, SMC Services can usually book a repair within 2-3 working days.