Miele W865 rinses light flashing

Hello Dave

Sorry for the delay in replying I have been working away.

I found an article from another reader (similar issue) allocating the pins appropriately :

My readings are in bold (other reader in brackets) :

Brushes pins 3-4 : 3.5 ohms (v 3.0 ohms)
Windings pins 5-7 2.6 ohms (v 2.7 ohms); 5-6 1.3 ohms (v 1.5 ohms); and 6-7 1.9 ohms (v 1.5 ohms)
Rotation sensor pins 1-2 500 ohms (v 310 ohms)

The motor was ok on the other reader. So I assume its ok for me.

I have ordered new brushes (as preventative maintenance) but the above seems to confirm they are not the issue.

Other checks :

I have blown down the black pressure sensor tube and the water bubbled. Drain was then cloudy. But rinses still flashing.

Not sure how to get the water bell off the drum, to check for the input being bunged up, no obvious bolt just a white fitting but will investigate further

As I said, the fuse on the PCB has not blown. So I assume the relay is fine? My understanding is the contacts usually weld together and immediately blow the fuse.

Best

Mark

Thanks Dave

I have checked the harness and cannot see any broken wires. But I have discovered something unusual (or I think it is)

The relay has 4 pins per side :

The top pins are power which are not relevant for this analysis (because power is always disconnected). And the next 3 pins (I will call pins 1, 2 and 3) represent the switch position on each bank. So RHS (and LHS) should normally be in their respective 1 & 2 resting position. And 1 and 3 when activated.

With the PCB disconnected and on the table. There is continuity between pins 1 and 2 (as expected confirming their correct resting state) and OL between 1 and 3 (as expected because not activated). But when I connect the harness (no power involved). There is continuity between 1 and 2 and 1 and 3.

Is that normal? Does the harness when connected create this anomoly of continuity everywhere?

I did notice a very very faint coating of black dust on the board and on the relays in this area (there is a similar but not the same relay below it) but thought that was just 20 years of age. There was some very light black dusting elsewhere too.

What is strange is if the relay has blown, why has it not blown the fuse?

Mark

I thought it might be something along those lines.

Is there any way to test the relay with power. Either (1) mains … I was thinking detach the PCB from the door and put the machine on spin. It will not spin but thought that might confirm the relay contacts have welded together. But I suspect I will still have the motor coil issue? or (2) with a battery with PCB on table?

Hello Dave

Checked fuse and its not blown.

Removed the air chamber and its like new, no gunk whatsoever. You could practically eat your dinner out of it.

Then decided to empty the drum of clothes and see what is actually happening with a view to resetting the pressure switch.

Drum emptied, added about 3 litres of water, drained and then selected finish before selecting quick wash.

Drum filled but as soon as the fill cycle finished the ‘rinses flashed again’ and the wash cycle never engaged.

But here are the interesting bits :

1. I set to drain and without even hitting start the drum tried to fill again. When I hit drain the drum only partially emptied. I had to use drain twice.
2. So when fully drained I tried again, selected quick wash, drum filled, rinses flashed, wash cycle never engaged. Moved selector to drain (no attempted re-fill this time) but again when I did hit start for drain, the drum only partially emptied. I had to hit drain twice.

So could the issue be drain related? I have moved the machine to make a new face plate for the dryer which sits next to it and I am wondering if the drain could have been affected or some issue with the drain or something that controls the drain??

Could it be the pressure switch causing all of this?

I am not hearing any click when I remove the black tube