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Techdesk, Service Engineer
Category: Appliance
Satisfied Customers: 16409
Experience:  Whitegoods engineer working for a multibranded national company in the UK
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Hi, I have a 5.5 year old bosch waa24162gb washing machine.

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Hi, I have a 5.5 year old bosch waa24162gb washing machine. No trouble with it until yesterday. It blew the main RCD circuit breaker. I've isolated it and proven that it is the washing machine that is causing the problem. When I switch the w/m on, it either blows the rcd immediately, or it starts to do something, and then blows the circuit breaker when it tries to do something else.
I don't know if just by switching it off and/or turning the controller knob, I am resetting the cycle to the beginning. So when it blew the rcd immediately, it may have been in the same point of the cycle, as when it blew the rcd before. When it works for a bit, before blowing the rcd, it doesn't seem to be at the start of a program, because it doesn't appear to be taking on water.
I've taken the top off, and can't see any loose wires.
Have you any ideas?
There's a few things can cause this, but, unplug the motor, try the machine.
It may throw up an error code, but see if it trips the rcd.

If it does, plug the motor back in and disconnect the heater.

Let me know what happens.
Customer: replied 3 years ago.


There is no display screen to show an error code, as far as I can see.

Error codes via flashing lights.

Customer: replied 3 years ago.

How do I unplug motor?

How disconnect heater?


Are your diy skills good enough to attempt this?

Have you looked at the motor? Is has a multiplug that simply unplugs.
Takes a bit of strength though.

The heater will require the front to be taken off of the machine to access it.

Customer: replied 3 years ago.

I should be able to manage it. Though I don't fancy taking the front off.


Can I access the motor by tipping the machine, or do I have to lay it on its side or something?

Take the rear panel off to get to the motor.
Don't lay it on it's side or turn it upside down.

Customer: replied 3 years ago.


There's nothing I would describe as a multiplug that I can see.


There's a plate on the back of the drum, with 4 terminals.


The first has a white connection with a single grey/mauve wire going in to it.

The 2nd is black with 2 thin blue wires.

The 3rd is an earth.

The 4th is black with a single grey/mauve wire. ( The same colour wire as terminal 1)


These are all the electrical connections I can see or feel.




I'm sorry but the plug is easy to find, it's attached to the motor.

It's not the easiest machine to work on, especially the motor.

Have someone hold the machine tilted rearXXXXX, XXXXX't just lean it against a wall as it could fall on you.
You'll then be able to see the motor with a torch.

There are 2 versions of the machine, 1 has the heater at the front, the other at the rear.
If you were describing an oval plate with the heater terminals coming out of the plate and thin wires to a sensor, you have the machine with the heater at the rear.

If so, disconnect the wires to the heater element (not the thin wires) and insulate the wires, tie them back out of the way.

Try the machine.
Does it trip?

If it does, reconnect the heater and disconnect the motor.

Customer: replied 3 years ago.

Hi, I've disconnected the two heater wires, and started it up. It's going. If the rcd trips, then this pc will go down. But it's going at the moment.

If it doesn't trip, you need a new heater.

Good luck with the test.

Let me know how it goes.

Any update ?
Did it trip?

If not, obtain and fit a new heater and your back in full working order.

If you don't have further questions on this, I'd appreciate it if you could rate the help/answer I provided.
It's how I'm paid for my time and efforts.

Customer: replied 3 years ago.



Like an idiot I was waiting for the w/m to cycle through to the end. Which of course it wouldn't because the water would never get up to temperature. So when I realised that, I stopped the wash cycle, and tried it on drain, and then spin. Everything seems to be working.


I have ordered new heater and thermostat, and will fit them as soon as they arrive.


I will let you know how thing turn out.




No problem.

Good luck with the repair.
Customer: replied 3 years ago.



I changed the heater and thermostat, and have just completed a full washing cycle, so it looks like it's fixed.



Great stuff, thanks for letting me know.

Glad you got it sorted out and working.

Good luck with the appliance.

I'd appreciate it if you could rate the answer/help I provided, positively.
It's how I'm paid for my time and efforts.

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