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CDA Dishwasher WC140-IN No Power No Lights

D/W has no power, no lights (therefore no error codes). I think it died in between usage, as the D/W was empty when problem spotted. D/W plugged in to spurred socket, but power is there. Changed fuse, no difference. Used the fuse from D/W in another appliance, and it works. So fuse and socket okay. Checked plug, all okay. No loose wires. No RCD trip on main board, otherwise other sockets would be dead. I'm sure you can tell from the model, this is integrated and I have not had the entire unit out, but assume power cable from plug to unit is okay and not compromised. I'm guessing I am going to need to remove the front panel to get in to the door section, but I have no idea what to look for or what to test via a multimeter.

Posted by Moorgate on


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Dan Peters

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  • 48 Answers

This is probably a fault with the PCB and you may need an engineer to replace the part.

If your dishwasher is still under warranty, call CDA.


Posted on Oct 14, 2021


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Have you checked the fuse[s]? You don't mention your location so I cannot comment of what protection devices that may be involved. UK has fused 13amp wall plugs for example.

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SOURCE: Faulty Diplomat Dishwasher - tripping mains fuse


My dishwasher a diplomat 12 program (hja8640) was doing exactly the same where every now and again when turned on at the plug it would trip. After engineers coming out several times and failing to fix it, they condemed it. New one was supplied, however did exactly the same thing. The electrician came back, checked the RCD power breaker and this was fine. It was then discovered that some dishwashers and washing machines send out a lot of earth leakage, combine this with other appliances on in the house can be enough to trip.

Soloution. The electrician removed the kitchen circut from the RCD breaker and intalled another breaker RCD just for the kitcehn loop, this therefore means that the kitchen has a seperate trip from the rest of the house, and touch wood, has solved the problem. This mind you has taken about three months to work out so i hope it saves you some time.

Always use a fully qualified electrician though.


Posted on Jan 09, 2009


  • 1 Answer

SOURCE: Total dead, no power? Changed fuse in plug and

This is quite an easy problem to fix. Whats happened is the water heater has overheated and tripped the power as a safety measure.

Take off the Left hand cover, there are 4 torx screws. You will see the water heater. with what looks like 2 circular teminals held on the side with a metal strap.

these are one shot thermal cut outs. the same as on a tumble drier.
Tassimos are over engineered and really only need one thermal cut of. if there are no lights on the front, the brown wire has tripped. if there is light and no heat the blue wire has tripped.

What I did was swap the brown wires over to the trip that had the blue wires on, so you still have a thermal trip. and bridge the blue wires together and taped them up - voila it works again. DO NOT CROSS THE BROWN WITH THE BLUE> BOOM!

to do the job properly take off the thermal trips and go to an applicance repair shop. of they dont have them on the shelf i would suspect they can get them they are very generic. try not to lose too much of the white thermal paste as this helps with the cut off. if you do lose some its the same as used on CPU heatink compound. put them in and replace the strap and re assemble.


Posted on Sep 08, 2009

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