[techstein]

Re: Hotpoint FDW20 dishwasher I’M lost for ideas 🙂

Thanks Iadom for a great response ,with clarity
it is certainly apreciated ..

just a few queries if i may,
Anyone reading this do not touch motors or capicators unless
you are sure what you are doing safety wise.
Ensure the machine is also unlpugged
And parts also isolated..

1)Is this a set rule ? that could be applied to other switches with 3 lugs
“For the two pairs that read infinity ONE should now show good continuity. The pair that previously gave of reading of continuity should now give a reading of infinity.'”

2)Is it worth changing the capicator on the motor ,

3)I am not sure if this is used to shunt the motor to start
of if it is also in use while the motor is running ?
just in case ??

Thanks Techstein

[techstein]

Re: Hotpoint FDW20 dishwasher I’M lost for ideas 🙂

Jackal ,
I understand and appreciate your concerns ,
and certainly like you I would not like to see anyone harmed.
Yes safety is a primary concern for all..

“you mention
You have now had three moderators question the safety angle of your component testing and I think that says it all really.

Just for clarity sake it is mentioned several times that the
components were “isolated”, the first moderator may not have been aware of this,

Surely the second 2 moderators were aware if they read the posts it is absolutely clear.

thanks for the the response to the query I had regarding “TOC”

thanks
Techstein

[techstein]

Re: Hotpoint FDW20 dishwasher I’M lost for ideas 🙂

Hi Jackal /Iadom

Jackal the pump was isolated and is not regulated by the PCB,especially when isolated..as clearly mentioned in 2 posts..

No other components were tested live ,so I am not quite sure what the concern is ,i did basic continuity tests , no mains power involved what so ever..

for your referance

I used this site to check water level Pressure)switch
do you folks see this method of testing unreliable ?

http://www.acmehowto.com/howto/applianc … rlevel.php

Iadom thanks for you technical input it is appreciated

“Neither the pressure sensor or the pressure switch will stop the drain pump from working.”

You have either got a faulty PCB or possibly main circulation pump motor.

Iadom
If the main motor TOC trips then the machine will not drain out.

what is TOC ?

S/N is 503300238
thanks techstein

[techstein]

Re: Hotpoint FDW20 dishwasher I’M lost for ideas 🙂

Hi Iadom,you mention ..

In a word, no your test is not logical.

The pressure switch has 3 terminals, for sake of argument 1 is line in, 3 is line out when no pressure,
2 is line out when pressure is applied.
Why do you think there should be a connection between 2 & 3 ❓
Hi Iadom,
Most of your other procedures are highly suspect and has already been mentioned downright dangerous as well.

Not sure you read all my “Second post , the device was isolated ,it its clearly mentioned in the second post,not in the first hindsight 🙂

The device (Pump)is not in circuit how can that be dangerous , ??
it is basically the same as plugging a lamp in or switching a fan on . or switching a pump on as in this case.when isolated.

ok the pressure switch has 3 terminals,

I would expect their are 6 possible states
3 with air pressure
3 without air pressure

I expect imho
the states to be opposite
when air pessure is applied ,
does this not sound logical.??

what are your thoughts on the high pressure sensor test I mention above?
does that seem logical

please do expand /enlighten

just saw you mentioned a drain pump fault,
the actualpump works perfectly well please clarify..?

Your technical expertise would be appreciated.

techstein.. 💡

[techstein]

Re: Hotpoint FDW20 dishwasher I’M lost for ideas 🙂

Thanks kwatt

I took the pressure sensor of too,
appears that is faulty,

basically it has 2 connectors , and continuity is good
but blowing or sucking down it moves the insides but not enough to break the contact continuity which it should , it will do if i apply pressure from a footpump or such, 😀
thanks for advice
posting this so it may help others
techstein..

[techstein]

Re: Hotpoint FDW20 dishwasher I’M lost for ideas 🙂

HI Done abit of testing on the water level switch it seems suspect , imho..(when i mention switch i am referring to the
device that is 2 inch in diameter and round , and works like a diaphragm with air pressue.

Testing as as follows with multimeter set for continuity test..

no pressure blown down pipe
1 & 2, no continuity
1 & 3 yes continuity
2 & 3. no continuity <<<<<<<

with pressure blown down pipe
1 & 2, continuity
1 & 3 no continuity
2 & 3. no continuity <<<<<<

as connectors 2 and 3 both show the same state (No continuity) with air blown down or not i presume this is faulty ,

does my test seem logical..
thanks

[techstein]

Re: Hotpoint FDW20 dishwasher I’M lost for ideas 🙂

Hi Kwatt is this the pressure sensor you mention

http://www.espares.co.uk/part/dishwashe … sure-.html

found a picyure of the pressue switch it is the round brown device as i thought

[techstein]

Re: Hotpoint FDW20 dishwasher I’M lost for ideas 🙂

Thanks for the response Kwatt,
and concerns, re: livepower direct

Just to clarify all other connections were disconnected ,
and the pump was isolated,from other electrical components with the machine unplugged and powered off , I should have mentioned this in my post hindsight is great 🙂

I think these have a pressure switch and also a pressure sensor Im not sure ?? can you confirm please ..

as the hose from the pressure switch goes into the sump

I checked this is clean and drops after suction is applied to ensure it is not jammed ,and the pipe is clear.
not sure if there is nay other check for this switch,if i am correct this device is circa 2 inch in diamater and round.

I reckon these also have a pressure sensor , betweeen the big circulation pump, and the spray arm , i will remove and clean it.If i see it

thanks will keep posting til resolved either way so other can maybe benefit.

Thanks for possible suggestions..

[techstein]

Any techs out there 🙂

Any ideas at all, ??

is the capicator being used continuously while the machine is pumping around ??

I suspect it does charge and discharge its power rapidly to the big circulation pump

As i understand it all dishwashers start with a pump out as soon as a prog is selected , to remove any remaining water etc.

this machine never gets to the pumping out stage,
i was wondering what makes it move on to that stage after it has washed , or when a prog is first selected,

is it a relay or something..??

could the failture of the supressor terminal cause such issues or is it just an adapter ??
seen on this page

http://www.hotpoint-spares.co.uk/dishwa … 6&sort=20a

thanks for any possible suggestiions

Read more: http://www.diynot.com/forums/viewtopic. … 97#1970297#ixzz1KfpJiI1f

[techstein]

Re: Hotpoint FDW20 dishwasher I’M lost for ideas 🙂

HI any ideas at all

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