I have a very strange problem with this washer dryer machine. It started to hum, but finished the washing cycle. Then in the next cycle it completely died. After replacing the fuse on the main PCB the machine came back to life. I've connected series light bulbs to the PCB and ran a self-test. The self test fails at test #6: Spin check (agitation) (source: https://www.samsung.com/us/support/answer/ANS00092622/)
Symptom: all tests are passed up to "Co" - cold valve check. Then test continues with the next step, number "6" is displayed for a second, but then the light bulbs are lit for a moment and the machine display goes off, also light bulbs go off. No error code is displayed. Since the bulbs are preventing the fuse to burn I can turn on the machine, repeat the test which always fails at the same step and error code is never shown.
Also tried the Smart Care method (https://www.samsung.com/us/support/answer/ANS00050453/). It says there's no problem with the machine.
I don't understand what could be the problem since I have also tested the following functionalities and all seems to work fine:
- dryer is working without issue. Drum is rotating in both directions while program is running.
- Spin cycle is working fine even on 1400 rpm.
- washing cycle starts to run fine: machine drains the remaining water if any (-> drain pump is OK), takes fresh water -> valves are OK), then drum is rotating in both directions (-> motor is OK). At a certain point in the program the machine produces the same symptom as described above, hence I'm assuming it is starting to "agitate".
But since otherwise drum just rotates fine in both directions e.g. in drying mode or in the first phase of wash program I don't understand how it is different from "agitation" mode?
I'm also wondering if there is a way to skip this (or any) test step and check the high speed spin directly? It would be interesting to see if that is working or not. I assume yes, since the spin program is working fine.
Does anyone have an idea or explanation what's going on?
PS: connected series light bulbs are total 540W@230V, which should allow ~2.3 A current to flow. The fuse is T2.5A/250V. Lamps don't light up in any other scenario even dim, just in "agitation" mode.
