Bosch SPS 546, heating during wash, not during dry cycle

[welsh__boy]

Hi, I’m a commercial engineer, not domestic but been asked to look at a Bosch SPS 546 tomorrow. No serial number given. It fills, washes, empties fine, but been told it won’t dry. Been told the ‘heat’ cycle is around 45 seconds, but dishes are cold and wet coming out. The machine has been moved. I have read on here that other Bosches sometimes need a connection on the PCB re-soldered, just trying to be prepared ready for tomorrow. Is this a common Bosch problem?

[Penguin45]

Re: Bosch SPS 546, heating during wash, not during dry cycle

This one is a switch bank selector/electro-machanical timer controlled machine. Selector switch and n/o thermostat likely culprits, possibly timer fault.

Good luck,
Chris.

[welsh__boy]

Re: Bosch SPS 546, heating during wash, not during dry cycle

Thank you very much Penguin, I’d rather have a little knowledge than look like a complete plum. At least if it’s the old fashioned timer I can trace everything easier.

Again,
Cheers,
Chris

[welsh__boy]

Re: Bosch SPS 546, heating during wash, not during dry cycle

Is there a site like this for commercial appliances? Like Rancilio, Classic, Winterhalter etc.? Or if any of you out there need help on the commercial stuff I’m available at captaincrisps@aol.com (don’t ask about the name, brother-in-law playing funny buggers!!). Think I’d be a load more help on that stuff than the domestic!!!

[Penguin45]

Re: Bosch SPS 546, heating during wash, not during dry cycle

Not that we know of – have a word with admin@ukwhitegoods.co.uk about getting a commercial forum created!

The Mrs accidentally booked me an Aristoco (?) commercial d/w on Friday and I managed to fix it. Gawd knows what I’d have done if I’d needed parts for it! Room for a bit of pooling of knowledge perhaps.

Cheers,
Chris.

[welsh__boy]

Re: Bosch SPS 546, heating during wash, not during dry cycle

Just sent an email. Hate not being able to contribute properly, maybe somebody will post one I can help with sometime.

A good company for commercial spares is Caterparts on 01280 845344. If you can get a trade account prices are decent, but the help in finding parts is their strong point, if they haven’t got it on their system they’ll phone around for you. Not sure if they carry Aristarco spares, but they’d find them for you. Not cheap those machine, not the larger ones anyway.

[welsh__boy]

Re: Bosch SPS 546, heating during wash, not during dry cycle

Still haven’t had a chance to inspect it yet, but now been told it’s not heating during the cycle, so going straight for the element, stat and wiring. Hoping a tags come off. Does this machine have to get up to temperature before it starts?

[Penguin45]

Re: Bosch SPS 546, heating during wash, not during dry cycle

Will run for a while, timer stops for static heat – stat closing restarts timer.

Chris.

[welsh__boy]

Re: Bosch SPS 546, heating during wash, not during dry cycle

Finally got to see the machine tonight, how awkward are domestic machines??? Element was fine, behind that I found what appears to be an override/ safety cut-off thermostat, open circuit. Is it the overheat cutout or just simply a normal temp. stat? Also saw something that looked like a microswitch next to the element going into the plastic casing, water probe? Didn’t want to fiddle too much, not sure how much abuse that plastic could take. Any words of wisdom would be much appreciated!!

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