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THe old pcb bleeped and various light flashed.
I checked out the machine and found a small leak so fixed this cleaned out the pans level micro switch ok element ok all individual components test ok.
So after reading this forum i replaced the PCB Bought from White goods.with the new PCB the machine would not reset as per instructions but ran through a complete 3 cycle getting nice and hot and then stopped with a flashing 4
now whatever i do Flashing 4 light. the PCB will not reset. the reset switch is fine.
i think the new pcb is duff or maybe just a weird change in reset procedure? help please
What is the button on the PCB for?
I can get the unit to reset using this switch. the main program switch does not seem to operate though although I need to press it to get the one on the PCB to reset the machine?Any instructions most gratefully received.
Re: di620 new pcb problem
Hi Paul,
It would seem to suggest a temperature control problem (NTC/thermostat or wiring) but with all these things that isn’t 100{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} guaranteed.
The chances of a new card being faulty are very, very slim, unless something else faulty has taken it out, especially since it has completed a cycle which would indicate it is, or was, fine. If there’s something else wrong then putting another card in would just blow that as well and, if it has taken out the new card then there will be another fault there.
One of the Indesit guys may be able to shed more light for you though.
HTH
K.
Re: di620 new pcb problem
Thanks for your help.
I can get the unit to reset using the program switch with a mains on and then the switch on the pcb.
But the main p switch does not seem to operate after that but the on PCB switch does change the program correctly.
Any instructions most gratefully received.i am currently letting it run through a 2 (normal cycle and see what happens)
Re: di620 new pcb problem
update it runs through which ever cycle i set it on ant then bleeps 2 times and then sits flashing the cycle light it has just completed which is correct according to the manual. Trouble is to select a new cycle I have to randomly press and hold the P button and then the pcb button then it works for one cycle doing everything correctly heating up emptying etc.
Help I thing it must be stuck in some test cycle??
Thanks in advance for any advice.
Re: di620 new pcb problem
It sounds as though it is stuck on the factory test cycle, or there is an earth fault or you have the wrong PCB.
There are two different ones dependent upon serial number.
Before serial number 61020.0000 the PCB is a C00143206.
After 61201.0001 it is a C00143222.The slightest earth fault will cause the PCB to throw a wobbly. You need to meggar the heater, pump and anything else you can get your meter on to check for earth leakage.
Also possible for the small actuator under the P button to come adrift.
Jim.
Re: di620 new pcb problem
Thanks for the mega tip.
I have now megger ed the heater solinoids and empty pump and switches etc all are ok > 999M ohms but the pump is only 250kOhms so not low enough to trip my RCD but getting there.
I disconnected the earth to the pump to see if I could reset the PCB press and hold the p button after letting the current cycle run no joy.The voltage across the p button drops to 4.55 v when pressed so looks to be operating. Curiously they read the button into the H8 cpus A/D port.
Does this sound right?
At a drop of only 0.5 volts looks like they must be reading it as a analogue input rather than a logic level?? bad design ?.
I have spent way way to much time and money on this machine.
It still wants to run on cycle 3 so i am letting it run with the pump earth disconnected. It meggers ok like that!!!!
not really willing to buy a new pump just to see………..I would really like to isolate the fault just for my own satisfaction.
It is so frustrating being locked in some ones test program cycle with no way of restarting it even if I find the fault. lets lose power off memory. just always empty on start up?
Thanks for you help with thisPaul
Re: di620 new pcb problem
paulsdi620 wrote:
I have spent way way to much time and money on this machine.
Just be thankful you don’t have to try and earn a living repairing this stuff. :rolls:
Did you double check to make certain you had the correct PCB?
Jim.
Re: di620 new pcb problem
I checked the PCB box and that is correct there are no PCB markings that identify it is correct for the DI620.
I think it may have software for a slightly different model running in it?
Re: di620 new pcb problem
There should be a part number on the box that coincides with the numbers I gave in an earlier post. There are two different PCB’s and they are not interchangable.
Jim.
Re: di620 new pcb problem
Hi the Machine serial number is 61020 3793
The PCB box says C00143206
The machine works but to change the program I have to randomly press the
buttons. let it run through the cycle it decides then choose a new cycle.
I can find no markings on the PCB that show it is the correct PCB.
Do both PCB’s look the same?
Thanks for your help.
Best Regards
paulRe: di620 new pcb problem
That does appear to be the correct part number. There will be identifying marks on the PCB but we don’t have any lists of those.
Its not unknown for new ones to be faulty or for the wrong part to be in the box, but they are not common occurrences.
An engineer in the field who had satisfied himself that everything else on the machine is perfect and that the module is not stuck in factory test mode would eventually try another module. Sadly one of the downsides of DIY repairs is that this is not really an option without extra expense.
Jim.
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