Ariston LS168 wont switch on

[aggiesurfing]

Hi, having just had a sink blockage which caused some water to backflush into the dishwasher, the dishwasher now won’t switch on.
Have cleared the blockage and emptied the water from the dishwasher, the power light is on but no program light. Have held the ‘p’ button down to try and reset, but nothing. Is there a way of opening the bit that the filters sit in to clean that?
Hope you can help.

[iadom]

Re: Ariston LS168 wont switch on

You may have flooded the base. One thing you can try before calling in the experts ( see the link below) is to unplug the machine, pull it out from under the unit or wherever and tilt it to one side, place few towels on the floor first. If you get a quantity of water running out then this could be the cause of your problem. Retry the machine afdter this. If it still does not work then it is time to call for the cavalry.

Jim.

[aggiesurfing]

Re: Ariston LS168 wont switch on

Thanks for that, I’ll try it, unfortunately it’s an integral dishwasher so i’ll probably have to take the kitchen apart to pull it out!

[iadom]

Re: Ariston LS168 wont switch on

Best of luck, if you are unlucky you will soon realise why kitchen fitters are loathed with a vengeance by the poor souls who have to try and repair these machines after they have ‘bodged’ them in. 😥

Jim.

[oneiota]

Re: Ariston LS168 wont switch on

I am also haveing this problem with my built-in LSI61 dishwasher after an overflow. I know the machine is draining well as I can I manually fill it with water and turn it on and it will drain, but that’s all it will do. I can’t reset the overfill error.

If you had any success in performing a reset after your machine backfilled, I would be interested in hearing what steps were taken!

[Penguin45]

Re: Ariston LS168 wont switch on

It will reset when the water is drained from the undertray.

Regards,
Penguin45.

[oneiota]

Re: Ariston LS168 wont switch on

I’ve found a solution for my problem; I’ll just summarise what my symptoms were in case anyone else encounters this problem and finds this useful.

After I had an overflow of my Ariston LSI61 built-in dishwasher and cleared the blocked filter, I found that the first light (overflow error) was blinking. After some abnormal pressing of the buttons, I could eventually select a wash cycle but for any cycle attempted, the machine refused to fill with water. The motor could be heard, and it would stay in the same state (without water) until switched off and the overflow error would be blinking again.

I wondered if there could be a problem draining the dishwasher. I poured a few litres of water into the dishwasher, started it on a cycle and immediately it would drain correctly, however, it would then again revert to the motor running without filling mode, and the first light (overflow error) would be blinking.

I felt that ever since the overflow error, it was stuck in that mode and failing to reset.

I found numerous postings on the web of people with a similar problem but no reply other than the link to a site where you had to pay money and wait 14 days for reset instructions.

I followed some instructions (pasted below) on another site, which suggested that I could reset the controller by entering a test mode (not in the manual but known to engineers) and re-entering user mode. It worked perfectly, as does my dishwasher now!

I had to pull my (built-in) dishwasher out one inch to access the controls whilst the door is closed (necessary for entering the test modes). This initially involved removing two screws at the top, the panel at the bottom of the kitchen cupboards for access to the front ‘legs’, and then lowering the bottom front legs of the dishwasher enough to allow the unit to tip forward a bit – enough so that you can press the buttons with the door closed.

A series of the correct button presses allows you to enter a test mode. There is a long test mode and a short test mode, and I chose to enter the long test mode and let the full test of 20 minutes run its course. After the first few seconds of the test, I could hear the water running and the dishwasher filling! The test ran, and I entered user mode again. Now the dishwasher works!

I’ll cut-and-paste the instructions from the site I found in case anyone else finds them of use. They are long-winded and will cover all sorts of other situations, but what I understood was that to solve my own problem (need to reset the controller) I only needed to 1) enter a test mode and 2) exit a test mode (back into user mode).

I’ll use the other tests in future if I ever need to.

Catherine

———————————-

MACHINE OVERVIEW

On the top of the door at the right-hand end is a row of four program
indicator lights, a program selector button (P) and a power switch. One
of the program indicator lights will illuminate depending upon the wash
cycle selected. At the end of the wash cycle the light will flash slowly
(about once a second.)

FAULT CODES
The program indicator lights have another function, which is not seen in
normal machine operation. When the electronic control system detects a
fault with the machine one of the lights will flash rapidly. If a
problem occurs with the machine then the fault can usually be determined
from the fault code displayed. The four program indicator lights
display a four-digit binary code. If a light in on then a “1” is
indicated. If a light is off then a “0” is indicated. For example, if
the lights are OFF-OFF-ON-OFF then a binary code of 0010 is being
displayed.

Fault codes are as follows:

No Program Code Fault condition
1 Heavy wash 1000 Operation of flood
protection system
2 Normal wash 0100 Heating
element/Thermistor/Thermostat fault
3 Rapid wash 0010 Drain pump fault or drain
blockage
4 Soak wash 0001 Not filling to correct
level within 6 minutes

Note: The light will flash rapidly to indicate a fault-do not confuse
with the slow flashing light that indicates the end of a User Wash
program.

TEST MODES

The Electronic Control Systems also incorporate a couple of Test Modes,
normally only accessible by Ariston or Indesit Engineers.
There are two Test Modes: Short and Long. In the short Test Mode it is
possible to manually activate individual machine functons. In the long
test mode manual activation of functions is not possible-the test is
completely automatic.
To enter either Test Mode it must be possible to access both the program
and power buttons with the machine door closed. To do this the machine
must be released from its housing and eased forward about an inch.

To enter a Test Mode:

Set the machine to OFF with the door closed.
Press and continuously hold the “P” key, then operate the power button
in the sequence ON-OFF-ON.
The left hand light will momentarily flash, ie code 1000. This confirms
entry into the test mode. (If entry is not accepted, ie no flash, then
power off and try again)
Within 1 second of the above release and repeatedly press the “P” key,
allowing no more than 1 second between key presses:

3 key presses gives a code of 0010. This is the Long Test
4 key presses gives a code of 1010. This is the short Test Mode
If you press the key too many times then keep going until either 0010 or
1010 is displayed.

Short test procedure

If you have selected the short test procedure (1010) then:
· The machine will fill to the level switch
· The wash pump will start.
· The heater will then run for about 5 seconds
· The machine will then stop after about 50s with both heavy and
normal wash lights flashing

After the above has completed each single press of the P button will
activate different functions of the dishwasher. The program selection
lights will illuminate to indicate the function currently activated:

No Code Function
1 1000 Fill solenoid valve
2 0100 wash pump
3 1100 Heating element
4 0010 Detergent/Rinse aid dispenser
5 1010 I/Sol regen
6 0110 Drain pump
7 1110 Fill Sol
8 1100 End of short test (1100 will flash)
9 0000 Returns the machine to user mode

To exit the short test procedure during the test hold down the P button
and switch the power button to off-This resets the machine to user mode.

Long Test Procedure

If you have selected Long test procedure (0010) then:
· The machine will fill to the level switch
· Wash pump will start
· Wash pump stops and detergent dispenser operates
· Wash pump runs and heater heats to 60 deg c
· Drain pump operates
· Fills to level switch
· Rinses
· Drains
· End of test cycle (1100 Flashes)

The long Test Procedure will run for around 20 minutes.
To exit the long test procedure during the test hold down the P button
and switch the power button to off-This resets the machine to user mode.

Note: Remember to open the door to select a user wash program or to
cancel a user wash program!

[wpo750]

Re: Ariston LS168 wont switch on

Apologies for digging up an old thread but I’ve encountered an issue with my LSI61 and I’ve been through all the test features as detailed in the very informative post above.

The unit started behaving strangely the other day when it just wouldn’t progress with the wash program. It would start off making the usual noises but there would be no water filling up yet the heating element would activate. After a while I’d open the door to find a very warm dishwasher and a small pool of water at the bottom but no attempt to wash.

I went through with the test functions but found that the long test would ‘hang’ and it never completes. Now it appears I can’t exit from the test mode as there is never an option to start a user wash program.

Does anyone have any suggestions short of calling out an engineer?

Thanks.

[Penguin45]

Re: Ariston LS168 wont switch on

Water level control jammed in the full postition will allow the heater to operate. For a little while…..

Penguin45.

[wpo750]

Re: Ariston LS168 wont switch on

Penguin45 wrote:Water level control jammed in the full postition will allow the heater to operate. For a little while…..

Penguin45.

Thanks for your input. Is there anything you can suggest I do and how would I ‘un-jam’ the water level control? Cheers.

[Candystripe]

Re: Ariston LS168 wont switch on

Hi there,

I have an Ariston LSI 68 (Duo Wash) it’s about 6 years old. Originally our wash programme failed to finish / drain completely (it left a very small amount of water behind), then after turning the power back on for our next wash the programme button would not respond (no beep or lights).

Similar to wpo750 I was able to run the test programmes explained in this post. Here’s what happened:

1. The DW ran the full long test successfully apart from leaving a small amount of water, and 4 regular flashing lights.

2. The residue water was then fully drained away immediately when we ran the test function again and this second test cycle immediately ended, leaving the DW again with 4 regular flashing lights (located on the right hand side of the 6 programme lights).

We ran all the tests again, and each time we have got same results with the 4 regular flashing lights.

All the functions of the DW appear to be working perfectly on their own, but we cannot get any response from the programme button. Might there be a code we can use to reset the programme mode?

Any help is greatly appreciated.

ps our DW low-salt light was also on when problem first started, but is since back off, salt having been applied. 😕

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