Whirlpool adg7540 dishwasher cold water only

[Butch]

Re: Whirlpool adg7540 dishwasher cold water only

New development …………….. now jumps from programme selected to the rinse programme and beeps repeatedly 🙁 no engineer yet but it is the weekend, any ideas chaps, if I know what to change I am more than capable of doing it myself

regards Tony

[gegsy]

Re: Whirlpool adg7540 dishwasher cold water only

Good news then 😀 Its the classic NTC fault.
P/no 481228268035 which is HERE (now part number 481228268051)

Greg

[Butch]

Re: Whirlpool adg7540 dishwasher cold water only

Thanks for your advise i have ordered the NTC will let you know how it goes

regards Tony

[Butch]

Universal NTC arrived todayas promised. Good clear instructions, simple to fit and best of all it immediately solved the problem. Thanks very much for your help and advise Greg and thanks to UKWhitegoods for such a helpful and informative web site

regards Tony

[MrJ]

Re: Whirlpool adg7540 dishwasher cold water only

I am having very similar problems to the OP.

Dishwasher goes through cycle but does not heat/dry.

I got a local engineer (whirlpool registered) out to have a look and they have replaced the NTC with no success (on 3rd attempt – they brought 3 different NTC parts on 2 different occasions). I have had a look at images for the NTC on other sites and they differ somewhat from mine. (mine has spade type terminals with blue wires that go to a connector.) To be honest he was stumped as he expected error codes on the panel. He kindly left me a copy of the error codes and what they mean just in case it starts flashing them. I have put the machine through a test cycle as described in the manual and all it does is start flashing when holding down the start while turning on the machine, as expected, when I start the test cycle it just steady flashes of/on with no pauses.

Anyone have any further suggestions.

TIA
MrJ 😉

[Penguin45]

Re: Whirlpool adg7540 dishwasher cold water only

Strictly speaking, a steady flashing with no pattern is F1 – the ntc sensor. If your tech has tried replacement of the part (they have been updated BTW) then the fault more or less has to be the computer board itself.

Regards,
Penguin45.

[MrJ]

Re: Whirlpool adg7540 dishwasher cold water only

I ran it through the check program again. This time shutting the door. It seems to want to do a rinse (as this si the program selected). I cancelled the program and then ran it through a 65 Degree C program and it seemed to work OK 😮 .

I am doing the same program as I type to see if it works again.

Hopefully it’s not a new board as I think I saw them for £100+.

MrJ 😉

->Edit 27-2-07
Well the machine seems to be working for the moment. If it goes again I will get a new (different brand) machine.

Thanks for your help

[pinchy100]

Re: Whirlpool adg7540 dishwasher cold water only

I have a similar problem with my ADG7450, dishwasher runs through complete cycle but does not heat water, although the machine heats up at the end drying part of the cycle. I have checked the NTC, reads 70kohm when cold and resistance reduces as I pour hot water over it. Checked all contacts, & wiring continuity, all OK.
If I unplug the NTC from the pcb it starts beeping and flashing continuously.
Before I spend £40 on a new part, can anyone confirm that it is the NTC that is faulty? Thanks

[Penguin45]

Re: Whirlpool adg7540 dishwasher cold water only

£40?

Nope, no confirmation. Some work, some don’t, regardless of the reading. NTC is cheaper than a PCB though. As a repairer, I carry the NTC as a stock item, which gives me the option of substitution to check. Usually works, but no guarantees.

Sorry.

Stay safe, power off when working on the machine.

Penguin45.

[pinchy100]

Penguin45, thanks for the info, guess I’ll order an NTC & hope for the best.
cheers
Steve

[pinchy100]

NTC ordered Monday, arrived & fitted Tuesday, all working well now. Many thanks to Penguin45 for your help & UK Whitegoods for prompt despatch of NTC.

[Eoin]

Re: Whirlpool adg7540 dishwasher cold water only

I have an ADG7540 that might have a simalar problem.

It starts fine. Does a quick rinse. Then fills with cold warter. But then stops. Nothing happens.

If I hold down the start button it drains and stops.

How do I check this HTC?

Or does anyone have suggestions?

Cheers,
Eoin

[Penguin45]

Re: Whirlpool adg7540 dishwasher cold water only

After fill, it should circulate….. If it doesn’t, you’d better have a read of THIS.

For anything other than circulation problems, you should get the flashing start lamp as a fault indicator.

Penguin45.

[pinchy100]

Re: Whirlpool adg7540 dishwasher cold water only

Back in April the NTC failed on my whirlpool ADG7450, got a new one from UK Whitegoods, & it has been working fine until now.
The washer goes part way through a wash, water heats ok etc but then starts beeping/flashing continuously & the rinse lamp is lit.
UKW kindly offered to replace the NTC under warranty & I returned it but they’ve metered it against a new one & it is the same.
Any ideas?
Thanks

[Penguin45]

Re: Whirlpool adg7540 dishwasher cold water only

Fickle sort of beast, your Johnny NTC. I have had them dead out of the packet before now – give a nice reading in kOhms on the test meter – still doesn’t work. I can only suggest that you give the contacts on the pcb a thorough clean and the edge connector a bit of a pinch to improve the contact pressure. Failure of the temperature control circuit on the PCB itself is possible, but unusual.

Penguin45.

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