Zanussi IZ161S Not Operating Correctly

[GRW1]

Zanussi IZ161S Not Operating Correctly

Last Week my daughter’s Zanussi IZ161S Washing Machine had not spun the wash.
She tried another wash. It started on the Wash and loaded the powder and water and the drum rotated normally. After about three minutes it switched to Spin and number 3 on the display. The Drum rotated at wash speed and the water was pumped out but there was no spin action. The display went from 3 2 1,0 in about 1 minute.

It did not perform any Rinses and did not display any error code.

I have tried this out myself and it went the same way, except on the cotton wash, when it washed a few minutes longer before switching to Spin and number 3.

The numbers on the display do not stay on for 1 minute as it states in the instruction book but drop down fairly quickly.

I turned the machine on its back and took out the brushes. They were about 23mm. long on their longest side and looked in good condition, in my opinion.

If any one has seen these symptoms before or could give me any idea of what to try next, I would be very grateful.

Regards,
GRW1

[TheSpinDoctor]

Re: Zanussi IZ161S Not Operating Correctly

Hi.

Unplug appliance & using a suitable test meter, measure across the recirculation pump terminals.

You should get a reading around 180-200 Ohms. If it is lower, the coil has burnt out & has most likely popped the triac on the main board that controls it.

If so, both would need to be replaced.

[GRW1]

Re: Zanussi IZ161S Not Operating Correctly

I would like to thank TheSpinDoctor for a very quick reply to my query about my daughter’s Zanussi washing machine.

I was not able to go to her house today, but I will be visiting her tomorrow and will bring a multimeter with me and check the resistance across the recirculating pump therminals.

I will let you know how I get on.

Thanks again TheSpinDoctor,
Regards,
GRW1

[GRW1]

Re: Zanussi IZ161S Not Operating Correctly

Hi,

On Sunday night I tried to take a resistance reading across the terminals of the recirculating pump, which I assume, is the pump at the right of the filter housing with a tube going up to the top of the drum over the door.

I laid the machine on its back and looked in through the hole in the middle of the thick plastic base using a mirror and a hand lamp. I thought I would be able to get at the pump by removing the lower front outer plastic panel. I took it off but there was no access that way as the metal case went down behind it.

I then removed the 2 hexagon head screws from the plastic base, which secured the filter/pump housing and manoeuvred it to the hole in the base but I could not see any bare terminals to take a reading from but there was 2 greenish insulated wires going into the pump housing. I had not disconnected any rubber hoses, as it is extremely awkward lying down to get at them.

It had got quite late so I had to reassemble everything and leave it to another day.

I was wondering if there was not an easier way into the machine to do this job but I couldn’t see any.

When I retested the machine there was no water circulating over the door.

Any further help would be very much appreciated.

Regards,
GRW1

[TheSpinDoctor]

Re: Zanussi IZ161S Not Operating Correctly

GRW1 wrote:I was wondering if there was not an easier way into the machine to do this job but I couldn’t see any.

Unplug. Take off lid. 4 x 8mm Hex screws on top & another4 on lower of rear cabinet & the whole back half of the cabiney comes away.

[GRW1]

Re: Zanussi IZ161S Not Operating Correctly

Thanks again to TheSpinDoctor,

I will have another look at it this weekend when I visit my daughter.

Regards,
GRW1

[GRW1]

Re: Zanussi IZ161S Not Operating Correctly

I removed the back of the washing machine but there was too much in the way to see much of the pumps so I replaced it.

After another couple of tries through the bottom of the machine, I removed the drain and circulating hoses and was able to move the pump/drain assembly far enough to get an ohms reading across the two terminals. The reading was 29.5 ohms. I removed the 3 screws holding the circulating pump and took it out.

I eventually ordered a new pump DST1320156001, which is the newer model for this machine, and fitted it.

I think I put the 2 wires on the same terminals that I took them off but I’m not 100{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} certain. Does it matter which terminal each wire goes on too as it is an AC motor and booth wires look the same.

I assume the PCB, that controls the circulation pump, is the one the 2 wires from the pump goes to at the top back right side in a plastic case.

I numbered each terminal with a matching number on the plastic case with a permanent marker and asked my son to take out the PCB to see if he can fix it.

The PCB is a GE PROCOND ELETTRONICA 356088503

Is there likely to be more than a triac blown on the board.

Any more advice would be very much appreciated.

Regards again,
GRW1

[TheSpinDoctor]

Re: Zanussi IZ161S Not Operating Correctly

Hi.

As you say the reading was 29.5 Ohms, I would say that the triac on the board has blown & unless you know anyone that can replace just the triac, the board would be required.

On the wires for the circ. pump, it doesn’t matter what way around you connect them.

Hope this helps.

[GRW1]

Re: Zanussi IZ161S Not Operating Correctly

Thanks again SpinDoctor. That’s good news about the wires on the circulation pump.

My son’s work is with electronics. He has looked at the PCB, a GE PROCOND ELETTRONICA 356088503, and noted that the “Triac”, TY8 is blown and that there is a considerable amount of soot on both sides of the board around the switcher, namely C1, C2, C5, C34, C37, T1, R1, R61, D4, D12 and IC5, that appears to centralise around R1 which is reading 4.8 ohms. He has asked if I could get a copy of the circuit diagram for the board or a part number for TY8 as the centre has been blown out of it and he can’t tell what it is. There are similar components on the board with markings Z9SY219 and Z9SY221 but he has had little success tracking down details of these components.

I would be obliged if someone could give me a part number for TY8 and, although I think it unlikely, information on where I could get a circuit diagram for the PCB. Finally, would anyone have any information regarding other known/stock faults on this board.

Regards,
GRW1

[TheSpinDoctor]

Re: Zanussi IZ161S Not Operating Correctly

Hi.

There is no part number from Electrolux Distriparts that exists for a triac. It is the board or nothing from them. Whether you can get it for Maplin or wherever, I don’t know.

[GRW1]

Re: Zanussi IZ161S Not Operating Correctly

Hi,

Could anyone with access to a GE PROCOND ELETTRONICA 356088503 PCB, or a Circuit Diagram for it, give me the part number for what I believe is a Surface Mount Triac in position TY8 on this board. The part number is not visible on the board I have.

Regards,
GRW1.

[GRW1]

Re: Zanussi IZ161S Not Operating Correctly

Hi again,

As I could not get the part number for the Triac from my last post, my son fitted a 1Amp 600Volt one. He reckoned that should be ok as it was connected to a .20 Amp Circulating Pump.
I noticed a resistor on the back of the PCB directly behind the Triac which I did not think looked to good. There was no part number visible on it.

We went ahead and fitted the PCB but when we tried the machine it went the same as in my first post.

I was wondering if it was necessary to re-configure the PCB after fitting the new Triac.

Any further help would be much appreciated.

GRW1

[Penguin45]

Re: Zanussi IZ161S Not Operating Correctly

Lux Tech support = replace pcb. That’s it, all of it. Anything else and you’re working it out for yourself or looking for a company which will repair the pcb. There are a few out there – Google is your friend.

Penguin45.

[dwoodys]

Had exactly the same problem with our machine. Only real option was to replace the PCB at a cost of ~ £150. Only did it because the machine was 2 years old at the time. You have to keep an eye on the circulation pump on these machines. If the recirculation flow slows down or stops due to bacterial buildup in the tubes, the pump overheats and fails, taking out the PCB at the same time. I regularly blow the line clear on the pump circuit to avoid further problems.

[GRW1]

Re: Zanussi IZ161S Not Operating Correctly

Hi again,

Before sending the board away I checked the machine in diagnostic mode and error code E85 came up on the LCD when I got to the 9th LED.

I eventually sent the PCB to QER Ltd. to be repaired.

When it was returned I refitted it in the machine. When I started it up it operated just the same as I described in my first post.

I ran it in diagnostic mode again and still got error code E85. I blew down the circulating pump hose to check it was not blocked.

Could anything else cause this fault, other than the PCB, or is there anything else I should try.

Regards,
GRW1

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