Ignis D/w no heat

[Steven]

Ignis dishwasher ADL934/1S wh 8545 934 415 750.

No heat on wash,

No supply from main pcb, sent off for repair and had back. Fitted on machine still no supply from pcb.

water level etc all ok, motor working, dispenser opens.
Does the diaphram switch in sump stop the supply to the pcb?

Any other suggestions.

Steven

[Alanj]

Re: Ignis D/w no heat

Hi Steven,

have you checked for broken wires in loom going into base from door? Where it hinges.

Alan

[Steven]

Re: Ignis D/w no heat

I have not looked at it myself, this is on behalf of my engineer.

But he has said that he has tested the mains supply directly from the terminals of the large pcb in the base and it has no voltage from the relays.
Where do these relays get there supply from is it on the main pcb itself?

Could it be a faulty pcb? It has been repaired by emw.

I dont think There are many wires in the door on this type.?

Steven

[smart]

Re: Ignis D/w no heat

had one recently. thought pcb but wrong. turned out to be ntc. cheaper option as well

[johnmac11]

Re: Ignis D/w no heat

The suuply on this machine goes straight to the user board which has a double pole switch inside, from the user board it goes to the main pcb and connects right next to the heater wires. On the main pcb the incoming supply goes straight to a relay which feeds the heater. You say that there is power going to the motor etc: so the user board and door harness must be OK.

If there is no power coming out of the main pcb to heater it has got to be either the pcb at fault or the pcb thinks that there is not enough water in the appliance so wont turn on the juice to the heater. In the second scenario I would look at the flowmeter on the dosage chamber.

John

[Steven]

Re: Ignis D/w no heat

Cheers John

I have sent him back to take another look, and while he was there this time the machine did error out as though there wasnt enough water.
He reset it and it filled ok, so it could be an intermittant flow meter fault.

Initially the level and the circulation action seemed ok but i did ask him about the water level.

I got him to top it up manually while it was in a cycle, but if the board has already detected low water level then by doing this probably would not have made much difference is this right?

Will change flow meter and see what happens.

Steven

[johnmac11]

Re: Ignis D/w no heat

Whe the machine showed an error this time did the start light flash a sequence?

I also just noticed Smart’s post and he is correct in that it could be the NTC, usualy when an NTC goes faulty you get a continous flashing led and the appliance wont start but I have saw a few that were faulty with no error code showing.

John

[DentedPorsche]

Re: Ignis D/w no heat

Ok, I’m going back 3 years in memory here.
Lack of water shouldn’t let the machine run at all.

The flow meter must send at least 10 pulses in 10 seconds to the pcb, less and it aborts the program. (6 and 7 flashes) The pressure switch (WI) switches when the machine has taken in 1 (think it’s 1, might be 2) litres of water. If it fails to switch in a given time it aborts.
From the number of pulses and the time to switch the software calculates how much longer the fill valve should remain open.

Going through the program without heating and not generating an error code.
NTC, faulty PCB or corrupted software, slight possibility of broken wiring. If you don’t have a SAM or access to one then you can’t reprogram the pcb.

Test procedure for the machine is in the Known error codes and the UKWhitegoods book.

HTH

Brian

[Steven]

Re: Ignis D/w no heat

flow metre or the diapram switch has sorted this, I am suspecting that the PCB hasnt been repaired properly, so will look to get a new one,
No fault codes coming up at all on this one, could not get to do a test cycle.
Thanks for all your help on this one, can anyone confirm the exact part number for this main pcb in the base.

Thanks
Steven

[DentedPorsche]

Re: Ignis D/w no heat

If it won’t go into test program then most likely the NTC is faulty.
There are 3 instances where the test program can’t be run, Faulty NTC, Continous water inlet and can’t remember the third one off the top of my head.
Flow meter is part of the metering tank so you’d have to change the lot, wouldn’t affect the heating though as it would abort the program.
Faulty diaphragm switch (WI) won’t cause the heating fault. Explained in my previous post.
Don’t have my sios on this system so can’t look up the part number for the pcb. Someone else will be along with it later though.

Brian

Edit. I remember, F1, F2 and F9 will prevent the machine running it’s built in diagnostics.

[Steven]

Re: Ignis D/w no heat

Brian

Do know the part number for the NTC

Steven

[smart]

Re: Ignis D/w no heat

the part number for the ntc is WPL481228268051. they call it a feeler probe. god knows why when the connection on the p.c.b says n.t.c. hope this helps

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