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Re: Creda 37747 Condenser dryer
Penguin45 wrote:Radio Spares.
Well then no wonder walnut is having problems getting this dryer fixed he’s walked into the wrong shop! The tumble dryer does not have a tuned circuit and the dial on the front is not for tuning into Radio One 😆
But seriously walnut don’t mess around with manual resettable TOC’s, instead fit the correct type and advise your customer on what the 10 minute ‘cool down’ part of the dial is for.(see iadoms post) Having first checked the reverse timer, condenser, fan etc etc 😉
Qualtex do auto-reset TOC’s by the way which will save recalls having to go back and press the button every time 💡 (TOC24 = 120degs TOC26 = 130degs)
Re: Creda 37747 Condenser dryer
Martin wrote:
Qualtex do auto-reset TOC’s by the way which will save recalls having to go back and press the button every time 💡 (TOC24 = 120degs TOC26 = 130degs)I`ve seen this mentioned a few times now and I may be missing something but I have a serious safety issue with replacing a one shot device with an auto-reset one.
If the working stat (auto-reset) was to go short circuit then instead of the one-shot tripping , and requiring engineer`s attention , the dryer would be left to cycle at a higher temp. on the wrongly fitted auto-reset stat.Any comments on this ❓
Bryan
Re: Creda 37747 Condenser dryer
I have mentioned recently on another thread. This is not a thermostat, it is a thermal fuse!
If anyone was to replace a fuse in a plug with the wrong rating just to overcome a problem, they would deserve to be struck off!
Bob
Re: Creda 37747 Condenser dryer
I think its time we established a few facts about these thermostat kits that Hotpoint have fitted to their machines.
The one shot thermal fuse is fitted as a last resort ie. when all the other devices fail (it is the highest temperature device).
The reason it is a one shot device is so that the underlying problem will have to be resolved, (which is not the case with an auto resetable device). ie. the machine permanently stops heating.
The problem is not so much with the one shot device but because of the narrow temperature margin between it and the resetable which is fitted to the heater plate. I can say this with certainty as many earlier Creda models used a one shot in the form of a microtemp fitted near the heater and these were never any problem.
As i said in the earlier post there is no problem whatsoever in fitting a manual reset with equivalent temp thresholds in place of the one shot (as other manufacturers do). If the underlying problem is not sorted then it will continue to trip and the nuisance factor will cause the operator to get it fixed anyway (unless it is a door opening / turning off prematurely issue). In which case it is down to educating the operator on proper use.
The original stat kits (red spot) had an even tighter margin and lower temps than the green spot. That is, it only had to stray a few degrees over the thermostat temp for the one shot to blow. Given that these are bi-metal devices anyway and not very accurate its asking for problems. The failure rate on these was so high that it must have even made Mr Hotpoint blush, so he relented slightly.
Let us not be decieved. These machines were designed to have voracious appetites for stat kits to generate income for whoever – . As i said earlier i am not complaining as we need to earn a crust too.
Andy 😀
Re: Creda 37747 Condenser dryer
When I go to one of these I take the old cycling stat out and gently crush it with my water pump pliers to examine the terminals. I nearly always find that they are burnt/melted/u/s. IMO as long as you fit a brand new cycling stat of the correct temperature you could use wilf’s re-set method for the one-shot. The new stat would need to have the same angles on the terminals so that wires didn’t get stretched. I don’t think I’d bother myself as the kits aren’t that dear and I only get one a month. But if you were doing one a day I’d think it worth stocking up from RS (free carriage on all orders to account holders – no trouble getting an account and lots to learn from all the junk mail they send you). 🙂
Mike.Re: Creda 37747 Condenser dryer
“1701583” over on”Trade Spares” also contains useful ideas for re-setting tripped TOC’s.
Mike.Re: Creda 37747 Condenser dryer
Had a recall on one myself, found the motor cap was faulty, was not pulling a full load; no fan; overheated stat.
Re: Creda 37747 Condenser dryer
Going back to Bobokines on 7th Nov,could the stat above the door have any bearing on this prob as I have just heard from a customer who will now be on her 4th stat kit since April and denies not using the cool down period. I have checked all other functions ie. motor speed, clear filters and condenser, she just keeps tripping.
RobRe: Creda 37747 Condenser dryer
The stat above the door should not cause the other stat to trip. The only time I have changed them is for a no heat fault. I did have one similar problem until the customer admitted that her little brat ( son ) kept pushing the door even when told not to. They fitted a plastic cupboard child lock and I have not been back for a while. for the small cost of a capacitor it may be worth changing one if you have not already done so.
Re: Creda 37747 Condenser dryer
I agree with Jim that the stat above the door normally fails open circuit and there is usually signs of overheating on the terminals. However I have known one fail closed circuit and that will cause the overtemp stat to cut out. Test in against a hot cup of tea. It should open at 78 degrees C and close at 58C
Bob
Re: Creda 37747 Condenser dryer
bobokines wrote: Test in against a hot cup of tea.
Will it not work with a hot cup of water Bob. 😆
Re: Creda 37747 Condenser dryer
Came across the same problem with one of my customers, after 4 months and fitting 3 stat kits.
Got a bit cheesed off in the end and decided to ask the customer to run the app. for me. found the customer was not allowing for the 10 minute cool-down in the end.
If the machine cant cool down when switched off prematurely, the stats stew in the heat off the heater and blow, after all the stats dont care if the electricity is flowing or not.
Re: Creda 37747 Condenser dryer
Beta wrote:Got a bit cheesed off in the end and decided to ask the customer to run the app. for me.
Neat bit of detective work there eh 😉
Own up, I bet you used the ‘bobokines method’ really? 🙂
bobokines wrote:Test in against a hot cup of tea
Or did you just sit there supping the tea instead? :martin:
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