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Call to a machine in a rented property, fault reported “Smoke coming from detergent dispenser”.
I found the dispenser handle (drawer front) and fascia had distorted due to heat also the plastic rib under the lid above the dispenser had also distorted.
Customer said the machine had been on for about 15 minutes when smoke poured out of the dispenser, I asked if it could have been steam to which she said it looked and smelled like smoke. she turned the machine off, waited for a couple of hours, removed the clothes and then put the machine on to drain.
she confirmed there was water in the machine, wasn’t sure how hot the water would have been but didn’t think any of the washing had been damaged.
The element meters out OK, the resistance of the NTC and element is correct and no apparent earth fault the thermal fuse is still intact.
There is no smell of burning in the drum or behind the control panel and no sign of excessive heat or smoke.
After carrying out tests I put the machine on a 30deg wash (the same as the owner used and it completed the wash without a problem.
I wondered if the problem may have been caused by an external heat source but the front of the drawer is undamaged.
Does anyone have any ideas of what could have caused the plastic to distort or the smoke from the dispenser? I am completely stumped with this!
Re: Bosch FL, dispenser and fascia melted, I’m baffled!
A tenant who is after a new machine? There is nothing that would melt the dispenser without first melting the tub….
Re: Bosch FL, dispenser and fascia melted, I’m baffled!
Possible that she has put in some kind of chemical that has reacted with the detergent…..
Re: Bosch FL, dispenser and fascia melted, I’m baffled!
bryan-206 wrote:A tenant who is after a new machine? There is nothing that would melt the dispenser without first melting the tub….
Have to disagree with that. I have seen many Hotpoint machines in the past with the dispenser and drawer badly distorted by excessive heat, usually due to machine boiling over. The drum is designed to withstand boiling water, the dispenser and drawer are not.
Sent from my iPad using Tapatalk HDRe: Bosch FL, dispenser and fascia melted, I’m baffled!
iadom wrote:
Have to disagree with that. I have seen many Hotpoint machines in the past with the dispenser and drawer badly distorted by excessive heat, usually due to machine boiling over. The drum is designed to withstand boiling water, the dispenser and drawer are not.Had the machine got hot enough to do that sort of damage would it not have taken out the TOC in the element, also the tenant hadn’t found any problem with the clothes in the machine at the time?
Also she seemed quite sure she saw and smelled smoke not steam.Re: Bosch FL, dispenser and fascia melted, I’m baffled!
The old Hotpoint’s didn’t have a toc in the element and they are actually supposed to be ‘boil dry’ protectors anyway. 😉
TBH, is it happened after only 15 minutes as she says then it doesn’t sound like a boiling problem.
Re: Bosch FL, dispenser and fascia melted, I’m baffled!
iadom wrote:TBH, is it happened after only 15 minutes as she says then it doesn’t sound like a boiling problem.
That’s what I thought, which suggests it may have been smoke but still can’t fathom out what could have caused it, the only thing in the vicinity of the dispenser is the PCB but if that had caused it the fascia would have melted in the middle also it would be highly unlikely to run through a wash trouble free.
Still can’t fathom this out.
Re: Bosch FL, dispenser and fascia melted, I’m baffled!
Twoten wrote:
iadom wrote:
Still can’t fathom this out.How much easier it would be for us all to “fathom” if only we had the model number. :rolls:
Primary suspect in all things related would be to replace the heater/ NTC unit and also clean out the air chamber. 😉
Re: Bosch FL, dispenser and fascia melted, I’m baffled!
I thought I put that in my original post 😳
Model No: WAA24166GB/24
If it was the NTC/Heater then I would have expected excess steam rather than smoke as described by the user. Also if it had got that hot wouldn’t the ‘boil dry’ protector be O/C and the clothes be ruined? Also it would have taken more than 15 minutes to get to that sort of temperature.
I did check the air chamber, but thought if it was this then I would have expected the machine to be empty and the clothes and drum would smell of it.
Admittedly I am taking on board a lot of what the user has explained and know this can not always be relied on!
Re: Bosch FL, dispenser and fascia melted, I’m baffled!
But it would be steam and not smoke that melted the dispenser drawer and fascia. So we’re talking NTC problems here, so I personally would replace that and double check its connection. Especially since you found in worked OK on a 30 deg cycle afterwards.
When it boiled OR caught fire, did the clothes inside shrink or scorch I wonder? 😉
Re: Bosch FL, dispenser and fascia melted, I’m baffled!
Martin wrote:But it would be steam and not smoke that melted the dispenser drawer and fascia.
According to the user the clothes inside had not shrunk or scorched.
The customer claims the smoke/steam smelt like something burning. The dispenser handle had discoloured slightly as well as distorted from heat
Logic suggests that it had to be steam because the element is still OK and there are no other sources of heat in the machine but surly the machine would have had to be on for hours to cause that sort of damage (wouldn’t it)?
Re: Bosch FL, dispenser and fascia melted, I’m baffled!
I’ve seen the drawers distorted by people putting stuff in there that shouldn’t be.
The only time I’ve seen them “burnt” or distorted by heat there’s been massive other damage. At the very least it’d be reasonable to expect the heater to be damaged or show signs of some damage, distortion or whatever.
If not, then I’d be looking at what was put in it.
K.
Re: Bosch FL, dispenser and fascia melted, I’m baffled!
I had a customer once call me out to look at what was then a nearly new Zanussi. She is a farmer’s wife and not the sort of person to make up stories. She said there had been smoke billowing from the machine. I looked it all over and tested everything and found absolutely zilch. Told her to try it again with appropriate caution and to let me know if there was any recurrence. That was around ten years ago. Been there a few times since to do various repairs on it but there’s never been any recurrence of the smoke. Mind you, in this case there was no distortion of soap box. But I think in these circumstances you just have to either take it back to workshop for a soak test or let the customer carry on with it (with advice to monitor closely and making sure that good protection is incorporated in circuit) until it either does something wrong again or absolves itself from responsibility by continued good behaviour!
Also, I’m thinking boiling water from a kettle would distort dispenser drawer but I don’t know why they would invent the smoke 😕 .
Mike.Re: Bosch FL, dispenser and fascia melted, I’m baffled!
What’s the door seal like. Iv had customers complain of black smoke and traced it to the seal rubbing on the tank. As for the dispenser as has been said got to be steam or boiling water.
Can’t see it being any form of chemical reaction but you never know with detergents these days.
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