Matsui MSI60SL not heating. element and timer replaced

[SilverLee]

Hi. parts of the cycle complete but the element never heats up. I have already replaced the timer and the element so now getting a bit fed up but happy to throw a few more pounds at it compared to a new machine.

What I can’t understand is on the heating element terminals I am measuring 240v AC between either terminal and earth but nothing between the two terminals

Having read through lots of previous posts I now suspect the thermostat/s but I think there are two of them in the machine. Are they different? What does each of them do? Circled in the photo. Is one self reset and one non self reset? Which causes this problem?

thanks very much for your help.

[bazza500]

Re: Matsui MSI60SL not heating. element and timer replaced

The thermostats are bought and replaced as a pair. They should both be a short cct when tested with a meter.

Power off if you are going in. :zap:

[SilverLee]

Re: Matsui MSI60SL not heating. element and timer replaced

Thanks Bazza. I’ll give it a go. Do you agree this is likely to be the solution? Do these things come out easily?

[bazza500]

Re: Matsui MSI60SL not heating. element and timer replaced

Out of all the non heating faults on Matsui’s i have been to it has been these stats.

They are very easy to replace. They just screw out from underneath. The part you see inside the dishwasher stays in place, only the thermostats unscrew.

[SilverLee]

Re: Matsui MSI60SL not heating. element and timer replaced

Thanks. Have now got them out. 13mm socket very useful on the top.

It appears to be the 90 degree stat (the one on the right) which is not short circuit.

So basically it was telling the machine that it was overheated all the time. Strange that it allows the machine to continue working (but with no heat) therefore the controller can be moved round manually and some sections of the programme work while others don’t (the ones where it is waiting for a signal from the 78 degree thermostat that the water is up to the correct temperature which it will never get, because the faulty thermostat is simultaneously saying that the temperature is already too high).

Warning lights are on the front for low salt and low rinse aid, but not for ‘warning : the machine has overheated’. very strange.

I will order a pair of thermostats 5045-1707-3043-7, hopefully fixed tomorrow. Thanks again.

http://www.partmaster.co.uk/cgi-bin/product.pl?PID=1082685&query=Matsui{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d}20MSI60SL&model=MSI60SL&path=67231,125697:125832

[SilverLee]

Re: Matsui MSI60SL not heating. element and timer replaced

It worked!!

The 90 degree tstat switch was giving open circuit at room temperature. Should be closed circuit as you indicated. The 78 degree tstat switch was OK giving closed circuit at room temperature, but got replaced anyway.

Not it’s all working again.

Thanks very much

Lee

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