Samsung WW90K661OQX/EU 01 Washing Machine Spin Fault

[jontymox]

Good afternoon all,

Wondering if anyone can assist with the above problem?

Essentially, the machine fills, agitates, heats, and drains perfectly, but will not advance to fast spin.

I’ve also tried the washer on rinse and spin cycles, but when reaching fast spin stays on 10 minutes remaining…

I’m not sure if the motor or main electronic control module is faulty, as I’ve struggled to conclusively test these motors in the past.

Best regards,

jonty

[electrofix]

assume its a 3 phase motor as i cant check, if motor is ok on wash i see no reason why it would not spin

have you checked level switch ?

Dave

[jontymox]

Good evening Dave, (again!)

It’s a brushless “inverter” motor, and I haven’t checked the pressure switch.

Seems like that I ought to, and go from there…

Thanks,

jonty

[jontymox]

You may well be right, (again!) Dave.

The pressure switch gives an Ohms reading when testing between the two outer switch terminals, but doesn’t vary when blowing gently into the unit.

Alas, the part is out of stock (DC9601703G) and I’m struggling to obtain one reasonably quickly…

jonty

[electrofix]

you cant check the switch that way
its a variable reluctor not a variable resistor

seems to be some on Amazon and ebay

Dave

[jontymox]

Was unsure, and realise these pressure switches are difficult to test conclusively.

I feel it remains suspect, as washer stays on 10 minutes remaining and shows no sign of wishing to fast spin, (falsely detecting water in tub/drum?) yet drains and agitates fine…

jonty

[electrofix]

level switch does remaIn a poss problem but since its worked ok on all other rinses its a long shot

not sure if there is a way to recalibrate like on hotpoints

assume you checked pressure chamber for deposits

Dave

[wilf]

is the heater okay continuity and insulation resistance ?

wilf

[jontymox]

Well, the pressure chamber is clean, and vacuum hose fine.

Have tried the recalibration mode via the delay start & temp buttons etc….

Heater fine too. (1550 Meg’ Ohms resistance & 27 Ohms continuity)

I’ll try a pressure switch, otherwise suspect electronic control module.

jonty

[jontymox]

p.s. I don’t suppose a faulty drum imbalance sensor on top of the tub could cause this fault?

[jontymox]

p.p.s. Does anyone know the purpose of the small electrical unit close, but separate to, the electronic control module?

Samsung refer to it as a “harmonic coil.”

[electrofix]

from what i can see its a coil on a former with 2 wires

that makes it a choke in my opinion. its a power supply thing. probably used for surges etc

should not affect spin
if out of balance detector was faulty i would expect it to come up UB at the end

you can download an app with this one, have you tried that ?

Dave

[jontymox]

Oh…. no, I haven’t tried downloading an app, as I’m not au fait with such electronic wizardry!

Sounds like it may help in diagnosing this problem…

[electrofix]

look up the owners manual and it mention diagnostics

not done it myself

Dave

[jontymox]

Have just replaced the pressure switch, and problem remains.

On a spin cycle, 16 min’s for example, the motor will slowly rotate back and forth, but the display sticks on 10 minutes remaining and no fast spin…

Have inspected the wiring harness as best as possible, and tried the diagnostic mode, (without joy) as haven’t been able to locate diagnostic mode for this model online, so probably not pressing correct button sequence!

Will have to investigate App procedure, which I’m completely unfamiliar with….

jonty

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