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hi, i was wondering if anyone could help me with some info,i have a zanussi zwf1640s which is working sometimes and sometimes not.i have replace one pressure switch thinking that woulds sort it ,wrong ! any way after reading the haynes manual which i went out and bought it says there is a way of checking the pressure switch by gentle blowing and listening for the clicks.which i have done and i can clearly hear the sound as i blow.now i have tried this on the other one which is the analogical switch and it seems to take a lot more pressure to make it do anything.my question is should the same amount of pressure make both switches click if the answer is yes (which i hope it is cause that means i have found the fault hopefully)great, if not where do i look next (the fault e30 comes up, in the manual and after checking the switches it says it could be the main pcb ,please no)thanks for any help ..fred
Re: how hard to blow?
freddieboy wrote:my question is should the same amount of pressure make both switches click if the answer is yes (which i hope it is cause that means i have found the fault hopefully
Yes, the same amount of ‘blow’required there freddieboy :tup:
It should click with relative ease the same as the other to be honest. Not sure about the E30 error though?….New one on me?
Pressure switches on Zanussi’s are very reliable in the main and I suspect your ‘Haynes Manual’ maybe leading you up the garden path on this?
Have you checked that the black rubber hose to both switches is clear of debris? And that the Pressure bottle below is clear also?
Re: how hard to blow?
I would think it is normal to not hear a click from the analogical switch, as it is a continuously variable device with no switches in it!
Re: how hard to blow?
No, pressure switches are supposed to click, its how you can tell if they work and of course you can hear clicking when the machine is working. Only a gentle blow is required to test these things or you could knacker the whole switch all together.
Re: how hard to blow?
I was under the impression that an analogic pressure switch comprised internally of only a copper coil with a variable core – thereby altering the tuning of the coil? – no switches in there – making them very reliable ❓
Re: how hard to blow?
Having just blown up an old analogic pressure switch I can confirm that they do not ‘click’
But that is why Martin114 is in the trade and young Mr Hornsby is doing graphic design at college. 😉
Jim.
Re: how hard to blow?
hi and thanks for your help and views,i was hoping not to start an arguement sorry about that fellas.the analogical pressure switch which i hope is faulty does nothing when i blow into it and holding the switch i can not feel it doing anything either so even if there were no clicks there must be some movement to do something because it has a diaphram in it which surely needs to move to make the switch.i dont know i am confused .i have ordered one anyway so i will see and let you know ,ps the haynes manual has the fault codes and this says it is either the switches ,a blockage, crap in the chamber and also mention the main pcb as a possible fault……….fred
Re: how hard to blow?
by the way i have checked the chamber and the tubes there clear of debri and no splits,checked the pump replaced the inlet celenoid and guess what just blew up the pressure switch put it back and its started working again(the machine that is)so i am still drawn to it being that switch .its doing my bonce in!!!
Re: how hard to blow?
iadom wrote:Having just blown up an analogic pressure switch I can confirm that they do not ‘click’
But that is why Martin114 is in the trade and Mr Hornsby is doing graphic design at college. 😉
Jim.
Are you saying I don’t know anyting?Re: how hard to blow?
adamhornsby wrote:
Are you saying I don’t know anyting?On the contrary, I would read my post as saying that you don’t know everything. 😉
Jim.
Re: how hard to blow?
Well, you have never given an analogic pressure switch a blow job for a start. 😆
Jim.
Re: how hard to blow?
A faulty heater with a small voltage leak to earth can cause this. A faulty heater can only be successfully diagnosed by the use of an insulation test meter.
With all due respect, it is faster (and in the end, cheaper) to call an engineer to sort this problem. Where expensive electronic components are involved, trial and error methods can finish up costing you in unnecessary spares and wasted time.
Analogue pressure switches rarely fail in Zanussi machines; and a conclusive result cannot be obtained if you just blow into them because they do not ‘click’. By unplugging the switch and refitting it, you may have inadvertently tightened a loose connection. This may explain the burst of life you mentioned.
Time to click Repairs @, and get it working. 😉HTH,
Steve.
omg
dont EVER blow up an analogic switch!!
they measure air frequency digitally, and there will never be a click
e30 is an icongruency between analogic and antiboil switch ( the one with the click)
blowing up the tube simply destroys the switch
ive made that mistake, and it explains the e30 fault, new analogic switch required im afraid
if you enter the diagnostics and scroll trhough the controls, it will fill and show u the water volume as it increases on the display, its the only way youll ever test it
costly lesson :lesson:
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